Page 1
Transient Voltage Suppression Diodes
Axial Leaded – 20000W > 20KPA series
20KPA Series
Uni-directional
Bi-directional
Agency Approvals
AGENCY AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T
=25°C unless otherwise noted)
A
Parameter Symbol Value Unit
Peak Pulse Power Dissipation by
10/1000μs Test Waveform (Fig.2)
(Note 1)
Steady State Power Dissipation on
Inifinite Heat Sink at T
Peak For ward Surge Current, 8.3ms
Single Half Sine Wave Unidirectional
Only (Note 2)
Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above T
2. Measured on 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per
minute maximum.
=75ºC (Fig. 6)
L
P
PPM
P
D
I
FSM
, T
T
J
R
uJL
R
uJA
20000 W
400 A
-55 to 150 °C
STG
= 25°C per Fig. 3.
A
8.0 W
8.0 °C/W
40 °C/W
RoHS
Description
The 20KPA Series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
VBR @TJ= VBR@25°C × (1+αT
•
x (TJ - 25))
(αT: Temperature Coefficient)
• Glass passivated chip
junction in P600 package
• 20000W peak pulse
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• Fast response time:
typically less than 1.0ps
from 0 Volts to BV min
• Excellent clamping
capability
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Low incremental surge
resistance
• Typical I
less than 2μA
R
above 49V
• High temperature
soldering guaranteed:
260°C/40 seconds /
0.375”,(9.5mm) lead
length, 5 lbs., (2.3kg)
tension
• Plastic package has
underwriters laboratory
flammability classification
94V-O
• Matte tin lead–free plated
• Halogen free and RoHS
compliant
15kV(Air), 8kV (Contact)
• ESD protection of data
Applications
TVS devices are ideal for the protection of I/O interfaces,
V
bus and other vulnerable circuits used in telecom,
CC
computer, industrial and consumer electronic applications.
Functional Diagram
Cathode
Bi-directional
Uni-directional
Anode
Additional Information
Datasheet
Resources
Specifications are subject to change without notice.
Samples
© 2014 Littelfuse, Inc.
Revised: 01/24/14
Page 2
Transient Voltage Suppression Diodes
Axial Leaded – 20000W > 20KPA series
Electrical Characteristics (T
Part
Number
(Uni)
20KPA20A
20KPA24A
20KPA26A
20KPA28A
20KPA30A
20KPA32A
20KPA34A
20KPA36A
20KPA40A
20KPA44A
20KPA48A
20KPA52A
20KPA56A
20KPA60A
20KPA64A
20KPA68A
20KPA72A
20KPA80A
20KPA88A
20KPA96A
20KPA104A
20KPA112A
20KPA120A
20KPA132A
20KPA144A
20KPA160A
20KPA172A
20KPA180A
20KPA192A
20KPA204A
20KPA216A
20KPA232A
20KPA240A
20KPA256A
20KPA280A
20KPA300A
For bidirectional type having V
For parts without A , the V
Part
Number
(Bi)
20KPA20CA 20 22.34 24.57 50 548.9 5000 36.8 X
20KPA24CA 24 26.81 29.49 50 490.3 5000 41.2 X
20KPA26CA 26 29.04 31.94 50 451.9 2000 44.7 X
20KPA28CA 28 31.28 34.41 50 420.8 1000 48.0 X
20KPA30CA 30 33.51 36.86 5 392.2 250 51.5 X
20KPA32CA 32 35.74 39.31 5 372.0 150 54.3 X
20KPA34CA 34 38.00 41.80 5 351.3 50 57.5 X
20KPA36CA 36 40.20 44.22 5 328.5 20 61.5 X
20KPA40CA 40 44.70 49.17 5 297.9 15 67.8 X
20KPA44CA 44 49.10 54.01 5 277.9 2 72.7 X
20KPA48CA 48 53.60 58.96 5 254.4 2 79.4 X
20KPA52CA 52 58.10 63.91 5 235.4 2 85.8 X
20KPA56CA 56 62.60 68.86 5 218.1 2 92.6 X
20KPA60CA 60 67.00 73.70 5 207.0 2 97.6 X
20KPA64CA 64 71.50 78.65 5 194.2 2 104.0 X
20KPA68CA 68 76.00 83.60 5 183.6 2 110.0 X
20KPA72CA 72 80.40 88.44 5 174.1 2 116.0 X
20KPA80CA 80 89.40 98.34 5 155.4 2 130.0 X
20KPA88CA 88 98.30 108.13 5 142.3 2 142.0 X
20KPA96CA 96 107.20 117.92 5 130.3 2 155.0 X
20KPA104CA 104 116.20 127.82 5 120.2 2 168.0 X
20KPA112CA 112 125.10 137.61 5 111.0 2 182.0 X
20KPA120CA 120 134.00 147.40 5 104.1 2 194.0 X
20KPA132CA 132 147.40 162.14 5 94.8 2 213.0 X
20KPA144CA 144 160.80 176.88 5 87.1 2 232.0 X
20KPA160CA 160 178.70 196.57 5 78.3 2 258.0 X
20KPA172CA 172 192.10 211.31 5 72.9 2 277.0 X
20KPA180CA 180 201.10 221.21 5 69.4 2 291.0 X
20KPA192CA 192 214.50 235.95 5 65.4 2 309.0 X
20KPA204CA 204 227.90 250.69 5 61.4 2 329.0 X
20KPA216CA 216 241.30 265.43 5 58.0 2 348.0 X
20KPA232CA 232 259.10 285.01 5 54.0 2 374.0 X
20KPA240CA 240 268.10 294.91 5 52.2 2 387.0 X
20KPA256CA 256 286.00 314.60 5 49.0 2 412.0 X
20KPA280CA 280 312.80 344.08 5 44.8 2 451.0 X
20KPA300CA 300 335.10 368.61 5 41.8 2 483.0 X
of 40 volts and less, the IR limit is double.
RWM
is + 10% and VC is 5% higher than with A parts.
BR
=25°C unless otherwise noted)
A
Reverse
Stand off
Voltage V
(Volts)
Breakdown
Voltage V
(Volts) @ I
R
MIN MAX
pp
Maximum
Reverse
Leakage
I
@ V
R
(µ A)
BR
T
Test
Current
IT
(mA)
Maximum
Peak
Pulse
Current I
(A)
R
Maximum
Clamping
Voltage
V
@ I
C
PP
(V)
Agency
Approval
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Page 3
I-V Curve Characteristics
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
Transient Voltage Suppression Diodes
Axial Leaded – 20000W > 20KPA series
Uni-directional
BR
V
Vc
VR
IR
VF
IT
V
Bi-directional
BR
V
Vc
VR
Ipp
P
Peak Pulse Power Dissipation -- Max power dissipation
PPM
V
Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
R
V
Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)
BR
V
Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
C
I
Reverse Leakage Current -- Current measured at V
R
V
Forward Voltage Drop for Uni-directional
F
Ratings and Characteristic Curves (T
Figure 1 - TVS Transients Clamping Waveform
R
=25°C unless otherwise noted)
A
Figure 2 - Peak Pulse Power Rating Curve
Ipp
IT
IR
IR
IT
VR
BR
V
V
Vc
Ipp
1000
100
10
-Peak Pulse Power (kW)
PPM
P
1
0.0000010.00001 0.0001 0.001
-Pulse Width (sec.)
t
d
Specifications are subject to change without notice.
continues on next page.
© 2014 Littelfuse, Inc.
Revised: 01/24/14
Page 4
Transient Voltage Suppression Diodes
TA-Ambient temperature (ºC)
Number of Cycles at 60 Hz
Axial Leaded – 20000W > 20KPA series
Ratings and Characteristic Curves (T
=25°C unless otherwise noted) (Continued)
A
Figure 3 - Pulse Derating Curve Figure 4 - Pulse Waveform
100
)
PP
80
60
) or Current (I
PP
40
Derating in Percentage %
20
Peak Pulse Power (P
0
0255075 100 125 150 175
150
RSM
Peak Value
100
I
PPM
50
- Peak Pulse Current, % I
PPM
I
t
tr=10µsec
0
d
0
1.0 2.0 3.0 4.0
Half Value
I
I
PPM
( )
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
PPM
2
10/1000µsec. Waveform
as defined by R.E.A
t-Time (ms)
Figure 5 - Typical Junction Capacitance Figure 6 - Steady State Power Derating Curve
9
8
7
6
5
4
3
L = 0.375” (9.5mm)
Lead Lengths
2
1
Steady State Power Dissipation (W)
0
0255075100 125150 175200
TL- Lead Temperature (ºC)
Cj, Junction Capacitance (pf)
10000
100
Uni-directio nal
Tj=25C
f=1.0MHz
Vsig=50mVp-p
1
Bi-directional V
@ VR
= OV
Bi-directional
050 100 150 200250 300350
VBR - Reverse Breakdwon Voltage (V)
Uni-directio nal V
@ VR
= OV
PPM
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Figure 7 - Maximum Non-Repetitive Peak Forward
Surge Current
450
400
350
300
250
200
150
100
, Peak Forward Surge Current (A)
50
FSM
I
0
110 100
Page 5
Transient Voltage Suppression Diodes
Cathode Band
Axial Leaded – 20000W > 20KPA series
Soldering Parameter
Reflow Condition Lead–free assembly
- Temperature Min (T
Pre Heat
- Temperature Max (T
- Time (min to max) (ts) 60 –180 secs
Average ramp up rate (Liquidus Temp
(T
) to peak
L
to TL - Ramp-up Rate 3°C/second max
T
S(max)
Reflow
- Temperature (TL) (Liquidus) 217°C
- Time (min to max) (ts) 60 – 150 seconds
Peak Temperature (TP) 260
Time within 5°C of actual peak
Temperature (t
)
p
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (T
Do not exceed 280°C
) 150°C
s(min)
) 200°C
s(max)
3°C/second max
+0/-5
°C
20 – 40 seconds
) 8 minutes Max.
P
T
P
Ramp-up Critical Zone
T
L
T
s(max)
T
s(min)
Temperature (T)
25˚C
t
s
Preheat
t 25˚C to Peak
Time (t)
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 265OC
Dipping Time : 10 seconds
Soldering : 1 time
t
p
T
T
to
L
t
L
P
Ramp-down
Physical Specifications
Weight 0.07oz., 2.5g
Case
Polarity
Terminal
P600 molded plastic body over
passivated junction.
Color band denotes the cathode except
Bipolar.
Matte Tin axial leads, solderable per
JESD22-B102.
Dimensions
(for Uni-directional products only)
D
A
B
P600
A
Environmental Specifications
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Temperature Cycling JESD22-A104
H3TRB JESD22-A101
RSH JESD22-B106
Dimensions
C
A 1.000 - 25.40 -
B 0.340 0.360 8.60 9.10
C 0.048 0.052 1.22 1.32
D 0.340 0.360 8.60 9.10
Inches Millimeters
Min Max Min Max
Specifications are subject to change without notice.
© 2014 Littelfuse, Inc.
Revised: 01/24/14
Page 6
Transient Voltage Suppression Diodes
F
20KPAXXX
YYWW
Trace Code Marking
YY:Year Code
WW: Week Code
Product Type
Littelfuse Logo
Cathode Band
(for Uni-directional
products only)
R
Axial Leaded – 20000W > 20KPA series
Part Numbering System
Part Marking System
20KPA xxx XX X
OPTION CODE:
BLANK Reel Tape
-B Bulk Packaging
TYPE CODE:
A Uni-Directional (5%
CA Bi-Directional (5%
V
VOLTAGE
R
SERIES CODE
V
Voltage Tolerance)
BR
V
Voltage Tolerance)
BR
Packing Options
Part Number Component Package Quantity Packaging Option Packaging Specification
20KPAxxxXX P600 800 Tape & Reel EIA STD RS-296
20KPAxxxXX-B P600 10 0 Bulk Littelfuse Spec.
Tape and Reel Specification
2.56
(65.0)
0.394+/-0.020
(10.0+/-0.5)
13.0
(330.2)
3.0
(76.2)
0.68
(17. 27)
2.75
(69.85)
ecess Depth Max. 0.75 (19.05)
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Off Center
either side
0.028(0.7)
0.047
(1.2)
Dimensions are in
inches/mm
Direction of Feed
2.063+0.079/-0.039
(53.0+2.0/-1.0)
0.236
(6.0)
Loading...