SMAJ

Series

SMAJ = 400W

SMBJ = 600W

SMCJ = 1500W

1

Transient Suppression Diodes

For General Purpose Use

GENERAL DESCRIPTION

The SMAJ, SMBJ, and SMCJ Series are a popular format of general purpose

transient voltage suppression diodes. They are based on the low leakage,

high reliability, but low cost glass passivated chip rectifier technology.

FEATURES

• Glass passivated chip

• 400W, 600W and 1500W types (10/1000us)

• Low leakage

• Flat clamping

• Very fast response time

• Halogen Free

• ≤1μA leakage for 12V and up

• Lead-Free Terminations

APPLICATIONS

• Consumer

• Industrial

• Telecom

• Computer

HOW TO ORDER

12

Voltage

WM

5V - 400V

C

Polarity

C = Bi-directional

= Uni-directional

A

Tolerance

A = 5% Volage

Tolerance

MAXIMUM RATINGS

RATING

SYMBOL

SMAJ

SMBJ

SMCJ

UNITS

Peak power dissipation with a 10/1000us waveform

1

P

PPM

400

600

1500

Watts

Peak pulse current with a 10/1000us waveform

1

I

PPM

See tables

Amps

Power dissipation on infinite heat sink at TL = 75ºC

P

D

1.0

5.0

6.5

Watts

Peak forward surge current,8.3ms single half

I

FSM

40

100

200

Amps

sine-wave unidirectional only

2

Operating junction and storage temperature range

T

J

,T

STG

-55 ~ 150

-55 ~ 150

-55 ~ 150

ºC

Typical thermal resistance junction to air

θ

JA

120

100

75

ºC/W

Typical thermal resistance junction to case

θ

JC

30

20

15

ºC/W

NOTES:

2. Measured on 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.

SMAJ

SMBJ

SMCJ