®
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.
ABSOLUTE MAXIMUM RATINGS
(T
amb
= 25°C)
Symbol
P
PP
P
I
FSM
T
stg
T
j
T
L
Parameter
Peak pulse power dissipation (see note 1)
Power dissipation on infinite heatsink
Non repetitive surge peak forward
current for unidirectional types
Storage temperature range
Maximum junction temperature
Maximum lead temperature for soldering during 10 s.
Tj initial = T
amb
T
amb = 50
°C
tp = 10ms
Tj initial = T
amb
Value
400
3.3
40
- 65 to + 175
150
260
Unit
W
W
A
°C
°C
°C
SMA
(JEDEC D0214 AC)
Note 1
: For a surge greater than the maximum values, the diode will fail in short-circuit.
THERMAL RESISTANCES
Symbol
R
th (j-l)
R
th (j-a)
Junction to leads
Junction to ambient on printed circuit on recommended pad
layout
Parameter
Value
30
120
Unit
°C/W
°C/W
September 1998 Ed: 5A
1/5
STMICROELECTRONICS [ STMICROELECTRONICS ]
