Littelfuse 20KPA User Manual

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

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