Silicon Avalanche Diodes

286

www .littelfuse .com

500 Watt Axial Leaded Transient Voltage Suppressors

®

MAXIMUM RATINGS AND CHARACTERISTICS @25˚C

AMBIENT TEMPERATURE (unless otherwise noted)

UNIT

Watts

Amps

Watts

Amps

°C

Notes:

1. Non-repetitive current pulse, per Fig.3 and derated above

TA= 25˚C per Fig.2

2. Mounted on Copper Pad area of 1.6x1.6"(40x40mm)

per Fig.5.

3. 8.3 ms single half sine-wave, or equivalent square wave, Duty

cycle= 4 pulses per minutes maximum.

The SA Series is designed specifically to protect sensitive

electronics equipment from voltage transients induced by

lightning and other transient voltage events. These devices are

ideal for the protection of I/O interfaces, Vcc bus and other

vulnerable circuits used in computer and consumer electronic

applications.

FEATURES

•

5.0 to 180 Volts

•

Uni-directional and Bi-directional

•

Glass passivated chip junction

•

500W peak pulse power capability on 10/1000µs waveform

•

Excellent clamping capability

•

Repetition rate (duty cycle): 0.01%

•

Low incremental surge resistance

•

Fast response time: typically less than 1.0ps from 0 Volts to

BV for unidirectional and 5.0ns for bidirectional types

•

Typical IR less than 1µA above 10V

•

High temperature soldering guaranteed: 265˚C/10

seconds/.375",(9.5mm) lead length, 5lbs.,(2.3kg) tension

Program of Underwriters Laboratories.

SA

C A

Voltage

Bi-Directional

5% Voltage Tolerance

Packing Option

B = Bulk (1000 pcs)

T = Tape and reeled (4000 pcs)

SYMBOL

PPPM

IPPM

PM(AV)

IFSM

Tj, TSTG

VALUE

Min

500

SEE

TABLE 1

3

70

-55 to +175

RATING

Peak Pulse Power Dissipation on

10/1000µs waveform(Note 1, FIG. 1)

Peak Pulse Current of on 10/1000µs

waveform (Note 1, FIG. 3)

Steady State Power Dissipation at

TL=75˚C, Lead lengths .375",

(9.5mm)(Note 2)

Peak Forward Surge Current, 8.3ms

Single Half Sine-Wave Superimposed

on Rated Load, (JEDEC Method)

(Note 3)

Operating junction and Storage

Temperature Range

Mechanical Specifications:

Weight:

0.015 ounce, 0.4 gram

Case:

JEDEC DO-15 Molded Plastic over

passivated junction

Mounting Position:

Any

Polarity:

Color band denotes cathode except

Bidirectional

Terminal:

Plated Axial leads, solderable per

MIL-STD-750, Method 2026

ORDERING INFORMATION

SA Series

RoHS