SMAJ50A-TR Datasheet, PDF (1/5 Pages) STMicroelectronics – TRANSILTM

SMAJ5.0A-TR,CA-TR
®
SMAJ188A-TR,CA-TR
TRANSIL^TM
FEATURES
PEAK PULSE POWER : 400 W (10/1000µs)
STAND OFF VOLTAGE RANGE :
From 5V to 188V.
UNI AND BIDIRECTIONAL TYPES
LOW CLAMPING FACTOR
FAST RESPONSE TIME
JEDEC REGISTERED PACKAGE OUTLINE
DESCRIPTION
The SMAJ series are TRANSIL^TM diodes designed
specifically for protecting sensitive equipment
against transient overvoltages. The SMA package
allows save spacing on high density printed circuit
boards.
Transil diodes provide high overvoltage protection
by clamping action. Their instantaneous response
to transient overvoltages makes them particularly
suited to protect voltage sensitive devices such
as MOS Technology and low voltage supplied
IC’s.
SMA
(JEDEC D0214 AC)
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C)
Symbol
Parameter
PPP
Peak pulse power dissipation (see note 1) Tj initial = Tamb
P
Power dissipation on infinite heatsink
Tamb = 50°C
IFSM
Non repetitive surge peak forward
current for unidirectional types
tp = 10ms
Tj initial = Tamb
Tstg
Storage temperature range
Tj
Maximum junction temperature
TL
Maximum lead temperature for soldering during 10 s.
Note 1 : For a surge greater than the maximum values, the diode will fail in short-circuit.
Value
Unit
400
W
3.3
W
40
A
- 65 to + 175 °C
150
°C
260
°C
THERMAL RESISTANCES
Symbol
Rth (j-l)
Rth (j-a)
Parameter
Junction to leads
Junction to ambient on printed circuit on recommended pad
layout
September 1998 Ed: 5A
Value
30
120
Unit
°C/W
°C/W
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