EPCOS B32021A3103 Datasheet

Film Capacitors

EMI Suppression Capacitors (MKP)

Series/Type: B32021 ... B32026

Date: September 2014

© EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.

EPCOS AG is a TDK Group Company.

EMI suppression capacitors (MKP) B32021 ... B32026

Y2 / 300 V AC

Typical applications

Y2 class for interference suppression
"Line to ground" applications.

Climatic

Max. operating temperature: 110 °C
Climatic category (IEC 60068-1):
40/110/56

Construction

Dielectric: polypropylene (MKP)
Plastic case (UL 94 V-0)
Epoxy resin sealing (UL 94 V-0)

Features

Very small dimensions
Good self-healing properties
High voltage capability
RoHS-compatible
Halogen-free capacitors available on
request

Terminals

Parallel wire leads, lead-free tinned
Special lead lengths available on request

Marking

Manufacturer's logo, lot number,
date code, rated capacitance (coded),
capacitance tolerance (code letter),
rated AC voltage (IEC),
series number, sub-class (Y2),
dielectric code (MKP), climatic category,
passive flammability category, approvals.

Delivery mode

Bulk (untaped)
Taped (Ammo pack or reel)
For taping details, refer to chapter
"Taping and packing"

Dimensional drawing

Dimensions in mm

Lead spacing

±0.4

Lead
diameter

Type

d1±0.05
10 0.6 B32021
15 ... 27.5 0.8 B32022 ... B32024

37.5 1.0 B32026

Marking example
(position of marks may vary):

Important notes at the end of this document.

Page 2 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Approvals

Approval marks Standards Certificate

EN 60384-14, IEC 60384-14 40018909
UL1414, UL1283 E97863 / E157153

CSA C22.2 No. 1 / No. 8 E97863 / E157153

(approved by UL)

UL 60384-14, CSA E60384-14 E97863 (approved by UL)

Notes: Effective January 2014, only for EMI supression capacitors:

– UL 60384-14 certification replaces both UL 1414 and UL 1283 standards.
– CSA C22.2 No. 1 and CSA C22.s No. 8 are replaced by CSA E60384-14.
– References like 1414, 1283 are removed from the capacitor marking

Capacitors under UL1414, UL1283 produced during or before 2013, are
accepted under UL scope.

Capacitors under CSA C22.2 No.1 / No. 8 produced during or before 2013,
are accepted under cUL scope.

Important notes at the end of this document.

Page 3 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Overview of available types

Lead spacing 10 mm 15 mm 22.5 mm 27.5 mm 37.5 mm
Type B32021 B32022 B32023 B32024 B32026
CR(µF)

0.0010

0.0015

0.0022

0.0033

0.0047

0.0056

0.0068

0.0082

0.010

0.015

0.022

0.033

0.047

0.056

0.068

0.082

0.10

0.15

0.22

0.33

0.39

0.47

0.56

0.68

0.82

1.0

Important notes at the end of this document.

Page 4 of 22Please read Cautions and warnings and

Ordering codes and packing units

B32021 ... B32026

Y2 / 300 V AC

Lead spacingmmC

µF

Max. dimensions

R

w × h × l
mm

Ordering code
(composition see
below)

Straight

terminals,

Ammo

Straight
terminals,
Reel

Straight
terminals,

Untaped
pack
pcs./MOQ

pcs./MOQ

pcs./MOQ

10 0.0010 4.0 × 9.0 × 13.0 B32021A3102+*** 4000 6800 4000

0.0015 4.0 × 9.0 × 13.0 B32021A3152+*** 4000 6800 4000

0.0022 4.0 × 9.0 × 13.0 B32021A3222+*** 4000 6800 4000

0.0033 4.0 × 9.0 × 13.0 B32021A3332+*** 4000 6800 4000

0.0047 5.0 × 11.0 × 13.0 B32021A3472+*** 3320 5200 4000

0.0056 5.0 × 11.0 × 13.0 B32021A3562+*** 3320 5200 4000

0.0068 5.0 × 11.0 × 13.0 B32021A3682+*** 3320 5200 4000

0.0082 6.0 × 12.0 × 13.0 B32021A3822+*** 2720 4400 4000

0.010 6.0 × 12.0 × 13.0 B32021A3103M*** 2720 4400 4000

15 0.010 5.0 × 10.5 × 18.0 B32022A3103+*** 4680 5200 4000

0.015 6.0 × 11.0 × 18.0 B32022A3153+*** 3840 4400 4000

0.022 6.0 × 12.0 × 18.0 B32022A3223M*** 3840 4400 4000

0.022 7.0 × 12.5 × 18.0 B32022B3223+*** 3320 3600 4000

0.033 8.0 × 14.0 × 18.0 B32022A3333+*** 2920 3000 2000

0.047 8.5 × 14.5 × 18.0 B32022A3473M*** 2720 2800 2000

0.047 9.0 × 17.5 × 18.0 B32022B3473+*** 2560 2800 2000

0.056 9.0 × 17.5 × 18.0 B32022A3563+*** 2560 2800 2000

0.068 9.0 × 17.5 × 18.0 B32022A3683M*** 2560 2800 2000

0.082 11.0 × 18.5 × 18.0 B32022A3823M***  2200 1200

MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code: *** = Packaging code:

M = ±20%
K = ±10%

289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to

7.5 mm, Ammo pack

140 = Crimped down from lead spacing 10 mm to

7.5 mm, Reel

255 = Crimped down from lead spacing 15 mm to

7.5 mm, Ammo pack

155 = Crimped down from lead spacing 15 mm to

7.5 mm, Reel

003 = Straight terminals, untaped (lead length

3.2 ±0.3 mm)

000 = Straight terminals, untaped (lead length 6 -

1 mm)

Important notes at the end of this document.

Page 5 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Ordering codes and packing units

Lead spacingmmC

µF

Max. dimensions

R

w × h × l
mm

Ordering code
(composition see
below)

Straight
terminals,
Ammo

Straight
terminals,
Reel

Straight

terminals,

Untaped
pack
pcs./MOQ

pcs./MOQ

pcs./MOQ

22.5 0.047 6.0 × 15.0 × 26.5 B32023A3473+*** 2720 2800 2880

0.056 6.0 × 15.0 × 26.5 B32023A3563M*** 2720 2800 2880

0.068 7.0 × 16.0 × 26.5 B32023A3683+*** 2320 2400 2520

0.068 7.5 × 14.5 × 26.5 B32023B3683M*** 2200 2000 2280

0.082 8.5 × 16.5 × 26.5 B32023A3823+*** 1920 2000 2040

0.10 8.5 × 16.5 × 26.5 B32023A3104M*** 1920 2000 2040

0.10 10.5 × 16.5 × 26.5 B32023B3104+*** 1560 1600 2160

0.15 10.5 × 18.5 × 26.5 B32023A3154M*** 1560 1600 2160

0.15 10.5 × 20.5 × 26.5 B32023B3154+***   2160

0.22 12.0 × 22.0 × 26.5 B32023A3224M***   1800

0.22 14.5 × 29.5 × 26.5 B32023B3224+***   2160

0.33 14.5 × 29.5 × 26.5 B32023A3334+***   2160

0.39 14.5 × 29.5 × 26.5 B32023A3394M***   2160

27.5 0.15 11.0 × 19.0 × 31.5 B32024A3154+***  1400 1280

0.22 11.0 × 19.0 × 31.5 B32024A3224M***  1400 1280

0.22 11.0 × 21.0 × 31.5 B32024B3224+***  1400 1280

0.33 13.5 × 23.0 × 31.5 B32024A3334M***  1000 1040

0.33 14.0 × 24.5 × 31.5 B32024B3334+***   1040

0.47 15.0 × 24.5 × 31.5 B32024A3474M***   960

0.47 16.0 × 32.0 × 31.5 B32024C3474+***   880

MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code: *** = Packaging code:

M = ±20%
K = ±10%

289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to

7.5 mm, Ammo pack

140 = Crimped down from lead spacing 10 mm to

7.5 mm, Reel

255 = Crimped down from lead spacing 15 mm to

7.5 mm, Ammo pack

155 = Crimped down from lead spacing 15 mm to

7.5 mm, Reel

003 = Straight terminals, untaped (lead length

3.2 ±0.3 mm)

000 = Straight terminals, untaped (lead length 6 -

1 mm)

Important notes at the end of this document.

Page 6 of 22Please read Cautions and warnings and

Ordering codes and packing units

B32021 ... B32026

Y2 / 300 V AC

Lead spacingmmC

µF

Max. dimensions

R

w × h × l
mm

Ordering code
(composition see
below)

Straight
terminals,
Ammo

Straight
terminals,
Reel

Straight

terminals,

Untaped
pack
pcs./MOQ

pcs./MOQ

pcs./MOQ

27.5 0.47 18.0 × 27.5 × 31.5 B32024B3474+***   800

0.56 16.0 × 32.0 × 31.5 B32024A3564+***   880

0.68 18.0 × 33.0 × 31.5 B32024B3684+***   800

0.68 19.0 × 30.0 × 31.5 B32024A3684M***   720

0.68 21.0 × 31.0 × 31.5 B32024C3684+***   720

0.82 22.0 × 36.5 × 31.5 B32024A3824+***   640

1.0 22.0 × 36.5 × 31.5 B32024A3105M***   640

37.5 0.33 12.0 × 22.0 × 41.5 B32026A3334+***   1620

0.47 14.0 × 25.0 × 41.5 B32026A3474+***   1380

0.56 14.0 × 25.0 × 41.5 B32026A3564M***   1380

0.56 16.0 × 28.5 × 41.5 B32026B3564+***   800

0.68 16.0 × 28.5 × 41.5 B32026A3684+***   800

0.82 16.0 × 28.5 × 41.5 B32026A3824M***   800

0.82 18.0 × 32.5 × 41.5 B32026B3824+***   720

1.0 18.0 × 32.5 × 41.5 B32026A3105M***   720

1.0 20.0 × 39.5 × 41.5 B32026B3105+***   640

MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.

Composition of ordering code

+ = Capacitance tolerance code: *** = Packaging code:

M = ±20%
K = ±10%

289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to

7.5 mm, Ammo pack

140 = Crimped down from lead spacing 10 mm to

7.5 mm, Reel

255 = Crimped down from lead spacing 15 mm to

7.5 mm, Ammo pack

155 = Crimped down from lead spacing 15 mm to

7.5 mm, Reel

003 = Straight terminals, untaped (lead length

3.2 ±0.3 mm)

000 = Straight terminals, untaped (lead length 6 -

1 mm)

Important notes at the end of this document.

Page 7 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Technical data

Reference standard: IEC / UL 60384-14. All data given at T = 20 °C unless otherwise specified.

Rated AC voltage ( IEC 60384-14 ) 300 V (50/60 Hz)
Maximum continuous DC voltage V
Maximum continuous AC voltage V
Max. operating temperature T

op,max

DC

AC

1500 V
480 V (50/60 Hz)
+110 °C

DC test voltage 4000 V (C ≤ 0.33 µF), 3700 V (C > 0.33 µF), 2 s

The repetition of this DC voltage test may damage the capacitor. Special care must be taken in
case of use several capacitors in a parallel configuration.

Dissipation factor tan δ (in 10-3)
at 20 °C (upper limit values)

Insulation resistance R
or time constant τ = CR R

ins

ins

at 1 kHz 1 1
CR≤ 0.33 µF CR> 0.33 µF
100 000 MΩ 30 000 s

CR≤ 0.33 µF CR> 0.33 µF

at 100 V DC, 20 °C,
rel. humidity ≤ 65% and for 60 s
(minimum as-delivered values)

Passive flammability category B
Capacitance tolerances

±10% (K), ±20% (M)

(measured at 1 kHz)

Pulse handling capability

"dV/dt" represents the maximum permissible voltage change per unit of time for non-sinusoidal
voltages, expressed in V/µs.

"k0" represents the maximum permissible pulse characteristic of the waveform applied to the
capacitor, expressed in V2/µs.

Note:
The values of dV/dt and k0provided below must not be exceeded in order to avoid damaging the
capacitor.

dV/dt and k0values

Lead spacing 10 mm 15 mm 22.5 mm 27.5 mm 37.5 mm
dV/dt in V/µs 800 600 500 400 300
k0in V2/µs 677 000 508 000 423 000 338 000 254 000

Important notes at the end of this document.

Page 8 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Important notes at the end of this document.

Page 9 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Testing and Standards

Test Reference Conditions of test Performance

requirements

Electrical
Parameters

IEC 60384-14 Voltage Proof:

Between terminals,

Within specified limits

1500 V AC, 1 min.
Terminals and enclosure: 2 VR+
1500 V AC
Insulation resistance, R

INS

Capacitance, C
Dissipation factor, tan δ

Robustness of
terminations

IEC 60068-2-21 Tensile strength (test Ua1)

Wire diameter

Tensile

Capacitance and tan δ
within specified limits

force

Resistance to
soldering heat

Rapid change of
temperature

0.5 < d1≤ 0.8 mm

0.8 < d1≤ 1.25 mm

IEC 60068-2-20,
test Tb,
method 1A

Solder bath temperature at
260 ± 5 °C, immersion for
10 seconds

IEC 60384-16 TA= lower category temperature

TB= upper category temperature
Five cycles, duration t = 30 min.

10 N
20 N

∆C/C0≤ 5%
tan δ within specified
limits
No visible damage
I∆C/C0I ≤ 5%
tan δ within specified
limits

Vibration IEC 60384-14 Test FC: vibration sinusoidal

No visible damage
Displacement: 0.75 mm
Accleration: 98 m/s

2

Frequency: 10 Hz ... 500 Hz
Test duration: 3 orthogonal axes,
2 hours each axe

Bump IEC 60384-14 Test Eb: Total 4000 bumps with

400 m/s2mounted on PCB
6 ms duration

No visible damage

I∆C/C0I ≤ 5%

tan δ within specified

limits

Climatic
sequence

IEC 60384-14

Dry heat  TB/ 16 h.
Damp heat cyclic, 1st cycle
+ 55 °C / 24h / 95% ... 100% RH
Cold  TA/ 2h
Damp heat cyclic, 5 cycles
+ 55 °C / 24h / 95% ... 100% rh

No visible damage

I∆C/C0I ≤ 5%

I∆ tan δ I ≤ 0.008,

C ≤ 1 µF

I∆ tan δ I > 0.005,

C > 1 µF

Voltage proof

R

≥ 50% of initial limit

INS

Important notes at the end of this document.

Page 10 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Damp Heat
Steady State

Impulse test
Endurance

Passive
flammability

Active
flammability

IEC 60384-14

Test Ca
40 °C / 93% RH / 56 days

IEC 60384-14 3 impulses

TB/ 1.7 VR/ 1000 hours,
1000 V

for 0.1 s every hour

rms

IEC 60384-14 Flame applied for a period of time

depending on capacitor volume

IEC 60384-14 20 discharges at 2.5 kV + V

R

No visible damage

I∆C/C0I ≤ 5%

I∆ tan δ I ≤ 0.008,

C ≤ 1 µF

I∆ tan δ I > 0.005,

C > 1 µF

Voltage proof

R

≥ 50% of initial limit

INS

No visible damage

I∆C/C0I ≤ 10%

I∆ tan δ I ≤ 0.008,

C ≤ 1 µF

I∆ tan δ I > 0.005,

C > 1 µF

Voltage proof

R

≥ 50% of initial limit

INS

B

The cheesecloth shall

not burn with a flame

Important notes at the end of this document.

Page 11 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Mounting guidelines

1 Soldering

1.1 Solderability of leads

The solderability of terminal leads is tested to IEC 60068-2-20, test Ta, method 1.

Before a solderability test is carried out, terminals are subjected to accelerated ageing (to
IEC 60068-2-2, test Ba: 4 h exposure to dry heat at 155 °C). Since the ageing temperature is far
higher than the upper category temperature of the capacitors, the terminal wires should be cut off
from the capacitor before the ageing procedure to prevent the solderability being impaired by the
products of any capacitor decomposition that might occur.

Solder bath temperature 235 ±5 °C
Soldering time 2.0 ±0.5 s
Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane
Evaluation criteria:
Visual inspection Wetting of wire surface by new solder ≥90%, free-flowing solder

1.2 Resistance to soldering heat

Resistance to soldering heat is tested to IEC 60068-2-20, test Tb, method 1A.
Conditions:

Series Solder bath temperature Soldering time
MKT boxed (except 2.5 × 6.5 × 7.2 mm)

260 ±5 °C 10 ±1 s

coated
uncoated (lead spacing > 10 mm)

MFP
MKP (lead spacing > 7.5 mm)

MKT boxed (case 2.5 × 6.5 × 7.2 mm)

(lead spacing ≤ 7.5 mm)

MKP

uncoated (lead spacing ≤ 10 mm)

MKT

insulated (B32559)

5 ±1 s
< 4 s

recommended soldering
profile for MKT uncoated
(lead spacing ≤ 10 mm) and
insulated (B32559)

Important notes at the end of this document.

Page 12 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Immersion depth 2.0 +0/0.5 mm from capacitor body or seating plane
Shield Heat-absorbing board, (1.5 ±0.5) mm thick, between capacitor

body and liquid solder

Evaluation criteria:

Visual inspection No visible damage
∆C/C

0

2% for MKT/MKP/MFP
5% for EMI suppression capacitors

tan δ As specified in sectional specification

Important notes at the end of this document.

Page 13 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

1.3 General notes on soldering

Permissible heat exposure loads on film capacitors are primarily characterized by the upper cate­gory temperature T

. Long exposure to temperatures above this type-related temperature limit

max

can lead to changes in the plastic dielectric and thus change irreversibly a capacitor's electrical
characteristics. For short exposures (as in practical soldering processes) the heat load (and thus
the possible effects on a capacitor) will also depend on other factors like:

Pre-heating temperature and time
Forced cooling immediately after soldering
Terminal characteristics:
diameter, length, thermal resistance, special configurations (e.g. crimping)
Height of capacitor above solder bath
Shadowing by neighboring components
Additional heating due to heat dissipation by neighboring components
Use of solder-resist coatings

The overheating associated with some of these factors can usually be reduced by suitable coun­termeasures. For example, if a pre-heating step cannot be avoided, an additional or reinforced
cooling process may possibly have to be included.

EPCOS recommends the following conditions:

Pre-heating with a maximum temperature of 110 °C
Temperature inside the capacitor should not exceed the following limits:

 MKP/MFP 110 °C
 MKT 160 °C

When SMD components are used together with leaded ones, the leaded film capacitors should
not pass into the SMD adhesive curing oven. The leaded components should be assembled af­ter the SMD curing step.
Leaded film capacitors are not suitable for reflow soldering.

Uncoated capacitors

For uncoated MKT capacitors with lead spacings ≤10 mm (B32560/B32561) the following mea­sures are recommended:

pre-heating to not more than 110 °C in the preheater phase
rapid cooling after soldering

Important notes at the end of this document.

Page 14 of 22Please read Cautions and warnings and

Application note for the different possible X1 / X2 positions

In series with the powerline
(i.e. capacitive power supply)

Typical Applications:

Power meters
ECUs for white goods and household
appliances

In parallel with the powerline

Typical Applications:
Standard X2 are used parallel over the mains for
reducing electromagnetic interferences coming
from the grid. For such purposes they must meet

the applicable EMC directives and standards.
Different sensor applications
Severe ambient conditions

Basic circuit Basic circuit

B32021 ... B32026

Y2 / 300 V AC

Required features

High capacitance stability over the lifetime
Narrow tolerances for a controlled current
supply

Recommended EPCOS product series

B3293* (305 V AC) heavy duty with
EN approval for X2 (UL Q1/2010)
B3265* MKP series
standard MKP capacitor without safety
approvals
B3267*L MKP series
standard MKP capacitor without safety
approvals

Required features

Standard safety approvals
(ENEC, UL, CSA, CQC)
High pulse load capability
Withstand surge voltages

Recommended EPCOS product series

B3292*C/D (305 V AC)
standard series, approved as X2
B3291* (330 V AC), approved as X1

Important notes at the end of this document.

Page 15 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Cautions and warnings

Do not exceed the upper category temperature (UCT).
Do not apply any mechanical stress to the capacitor terminals.
Avoid any compressive, tensile or flexural stress.
Do not move the capacitor after it has been soldered to the PC board.
Do not pick up the PC board by the soldered capacitor.
Do not place the capacitor on a PC board whose PTH hole spacing differs from the specified
lead spacing.
Do not exceed the specified time or temperature limits during soldering.
Avoid external energy inputs, such as fire or electricity.
Avoid overload of the capacitors.

The table below summarizes the safety instructions that must always be observed. A detailed de­scription can be found in the relevant sections of the chapters "General technical information" and
"Mounting guidelines".

Topic Safety information Reference chapter

"General technical
information"

Storage conditions Make sure that capacitors are stored within the

specified range of time, temperature and humidity

4.5
"Storage conditions"

conditions.

Flammability Avoid external energy, such as fire or electricity

(passive flammability), avoid overload of the

5.3

"Flammability"
capacitors (active flammability) and consider the
flammability of materials.

Resistance to
vibration

Do not exceed the tested ability to withstand
vibration. The capacitors are tested to

5.2

"Resistance to vibration"
IEC 60068-2-6.
EPCOS offers film capacitors specially designed
for operation under more severe vibration regimes
such as those found in automotive applications.
Consult our catalog "Film Capacitors for
Automotive Electronics".

Important notes at the end of this document.

Page 16 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Topic

Safety information Reference chapter

"Mounting guidelines"

Soldering Do not exceed the specified time or temperature

1 "Soldering"
limits during soldering.

Cleaning Use only suitable solvents for cleaning capacitors. 2 "Cleaning"
Embedding of

capacitors in
finished assemblies

When embedding finished circuit assemblies in
plastic resins, chemical and thermal influences
must be taken into account.

3 "Embedding of

capacitors in finished

assemblies"
Caution: Consult us first, if you also wish to
embed other uncoated component types!

Design of EMI Capacitors

EPCOS EMI capacitors use polypropylene (PP) film metalized with a thin layer of Zinc (Zn).
The following key points have made this design suitable to IEC/UL testing, holding a minimum
size.

Overvoltage AC capability with very high temperature Endurance test of IEC60384-14
(3rdedition, 2005-07) / UL60384-14 (1st edition, 2009-04) must be performed at 1.25 × VRat
maximum temperature, during 1000 hours, with a capacitance drift less than 10%.
Higher breakdown voltage withstanding if compared to other film metallizations, like Aluminum.
IEC60384-14 (3rdedition, 2005-07) / UL60384-14 (1st edition, 2009-04) establishes high
voltage tests performed at 4.3 × VR1 minute, impulse testing at 2500 V for C= 1 µF and active
flammability tests.
Damp heat steady state: 40 °C/ 93% RH / 56 days. (without voltage or current load)

Effect of humidity on capacitance stability

Long contact of a film capacitor with humidity can produce irreversible effects. Direct contact with
liquid water or excess exposure to high ambient humidity or dew will eventually remove the film
metallization and thus destroy the capacitor. Plastic boxed capacitors must be properly tested in
the final application at the worst expected conditions of temperature and humidity in order to
check if any parameter drift may provoke a circuit malfunction.

In case of penetration of humidity through the film, the layer of Zinc can be degraded, specially
under AC operation (change of polarity), accelerated by the temperature, provoking an increment
of the serial resistance of the electrode and eventually a reduction of the capacitance value.
For DC operation, the parameter drift is much less.

Plastic boxes and resins can not protect 100% against humidity. Metal enclosures, resin potting or
coatings or similar measures by customers in their applications will offer additional protection
against humidity penetration.

Important notes at the end of this document.

Page 17 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Display of ordering codes for EPCOS products

The ordering code for one and the same product can be represented differently in data sheets,
data books, other publications and the website of EPCOS, or in order-related documents such as
shipping notes, order confirmations and product labels. The varying representations of the

ordering codes are due to different processes employed and do not affect the
specifications of the respective products. Detailed information can be found on the Internet

under www.epcos.com/orderingcodes.

Important notes at the end of this document.

Page 18 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Symbols and terms

Symbol English German

α Heat transfer coefficient Wärmeübergangszahl
α

C

Temperature coefficient of capacitance Temperaturkoeffizient der Kapazität

A Capacitor surface area Kondensatoroberfläche

β

C

Humidity coefficient of capacitance Feuchtekoeffizient der Kapazität
C Capacitance Kapazität
C

R

Rated capacitance Nennkapazität

∆C Absolute capacitance change Absolute Kapazitätsänderung
∆C/C Relative capacitance change (relative

deviation of actual value)
∆C/C

R

Capacitance tolerance (relative deviation

from rated capacitance)

Relative Kapazitätsänderung (relative
Abweichung vom Ist-Wert)

Kapazitätstoleranz (relative Abweichung
vom Nennwert)

dt Time differential Differentielle Zeit

∆t Time interval Zeitintervall
∆T Absolute temperature change

(self-heating)

Absolute Temperaturänderung
(Selbsterwärmung)

∆tan δ Absolute change of dissipation factor Absolute Änderung des Verlustfaktors
∆V Absolute voltage change Absolute Spannungsänderung

dV/dt Time differential of voltage function (rate

of voltage rise)

Differentielle Spannungsänderung
(Spannungsflankensteilheit)

∆V/∆t Voltage change per time interval Spannungsänderung pro Zeitintervall
E Activation energy for diffusion Aktivierungsenergie zur Diffusion
ESL Self-inductance Eigeninduktivität
ESR Equivalent series resistance Ersatz-Serienwiderstand
f Frequency Frequenz
f

1

Frequency limit for reducing permissible

AC voltage due to thermal limits

Grenzfrequenz für thermisch bedingte
Reduzierung der zulässigen
Wechselspannung

f

2

Frequency limit for reducing permissible

AC voltage due to current limit

Grenzfrequenz für strombedingte
Reduzierung der zulässigen
Wechselspannung

f

r

F

D

Resonant frequency Resonanzfrequenz

Thermal acceleration factor for diffusion Therm. Beschleunigungsfaktor zur

Diffusion

F

T

Derating factor Deratingfaktor
i Current (peak) Stromspitze
I

C

Category current (max. continuous

Kategoriestrom (max. Dauerstrom)

current)

Important notes at the end of this document.

Page 19 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Symbol English German
I

RMS

(Sinusoidal) alternating current,

(Sinusförmiger) Wechselstrom

root-mean-square value
i

z

k

0

L

S

Capacitance drift Inkonstanz der Kapazität

Pulse characteristic Impulskennwert

Series inductance Serieninduktivität

λ Failure rate Ausfallrate
λ

0

λ

test

P

diss

P

gen

Constant failure rate during useful

service life

Konstante Ausfallrate in der

Nutzungsphase
Failure rate, determined by tests Experimentell ermittelte Ausfallrate
Dissipated power Abgegebene Verlustleistung
Generated power Erzeugte Verlustleistung

Q Heat energy Wärmeenergie
ρ Density of water vapor in air Dichte von Wasserdampf in Luft
R Universal molar constant for gases Allg. Molarkonstante für Gas
R Ohmic resistance of discharge circuit Ohmscher Widerstand des

Entladekreises

R

i

R

ins

R

P

R

S

Internal resistance Innenwiderstand
Insulation resistance Isolationswiderstand
Parallel resistance Parallelwiderstand
Series resistance Serienwiderstand

S severity (humidity test) Schärfegrad (Feuchtetest)
t Time Zeit
T Temperature Temperatur
τ Time constant Zeitkonstante
tan δ Dissipation factor Verlustfaktor
tan δ

D

Dielectric component of dissipation

Dielektrischer Anteil des Verlustfaktors
factor

tan δ
tan δ
T

A

T

max

T

min

t

OL

T

op

T

R

T

ref

t

SL

P

S

Parallel component of dissipation factor Parallelanteil des Verlfustfaktors
Series component of dissipation factor Serienanteil des Verlustfaktors
Temperature of the air surrounding the

component

Temperatur der Luft, die das Bauteil

umgibt
Upper category temperature Obere Kategorietemperatur
Lower category temperature Untere Kategorietemperatur
Operating life at operating temperature

and voltage

Betriebszeit bei Betriebstemperatur und

-spannung
Operating temperature Beriebstemperatur
Rated temperature Nenntemperatur
Reference temperature Referenztemperatur
Reference service life Referenz-Lebensdauer

Important notes at the end of this document.

Page 20 of 22Please read Cautions and warnings and

B32021 ... B32026

Y2 / 300 V AC

Symbol English German
V
V
V

AC

C

C,RMS

AC voltage Wechselspannung
Category voltage Kategoriespannung
Category AC voltage (Sinusförmige)

Kategorie-Wechselspannung

V

CD

V

ch

V

DC

V

FB

V

i

V

o

V

op

V

p

V

pp

V

R

R

V

RMS

Corona-discharge onset voltage Teilentlade-Einsatzspannung
Charging voltage Ladespannung
DC voltage Gleichspannung
Fly-back capacitor voltage Spannung (Flyback)
Input voltage Eingangsspannung
Output voltage Ausgangssspannung
Operating voltage Betriebsspannung
Peak pulse voltage Impuls-Spitzenspannung
Peak-to-peak voltage Impedance Spannungshub
Rated voltage Nennspannung
Amplitude of rated AC voltage Amplitude der Nenn-Wechselspannung
(Sinusoidal) alternating voltage,

(Sinusförmige) Wechselspannung

root-mean-square value

V

SC

V

sn

S-correction voltage Spannung bei Anwendung "S-correction"
Snubber capacitor voltage Spannung bei Anwendung

"Beschaltung"

Z Impedance Scheinwiderstand

Lead spacing Rastermaß

Important notes at the end of this document.

Page 21 of 22Please read Cautions and warnings and

Important notes

The following applies to all products named in this publication:

1. Some parts of this publication contain statements about the suitability of our products for

certain areas of application. These statements are based on our knowledge of typical re-

quirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately incum­bent on the customer to check and decide whether an EPCOS product with the properties de­scribed in the product specification is suitable for use in a particular customer application.

2. We also point out that in individual cases, a malfunction of electronic components or

failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications

requiring a very high level of operational safety and especially in customer applications in
which the malfunction or failure of an electronic component could endanger human life or
health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by
means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by
third parties in the event of malfunction or failure of an electronic component.

3. The warnings, cautions and product-specific notes must be observed.

4. In order to satisfy certain technical requirements, some of the products described in this

publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Ma-

terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de­tailed questions, please contact our sales offices.

5. We constantly strive to improve our products. Consequently, the products described in this

publication may change from time to time. The same is true of the corresponding product

specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order. We also
reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the fore­going for customer-specific products.

6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-

sion of the "General Terms of Delivery for Products and Services in the Electrical In­dustry" published by the German Electrical and Electronics Industry Association
(ZVEI).

7. The trade names EPCOS, Alu-X, CeraDiode, CeraLink, CeraPlas, CSMP, CSSP, CTVS,

DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PQSine, SIFERRIT, SIFI,
SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, TFAP,
ThermoFuse, WindCap are trademarks registered or pending in Europe and in other coun­tries. Further information will be found on the Internet at www.epcos.com/trademarks.

Page 22 of 22