SM15T
TRANSIL™
Features
■
■
■
■
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Peak pulse power: 1500 W (10/1000 µs)
Breakdown voltage range: from 6.8 V to 220 V
Uni and bidirectional types
Low clamping factor
Fast response time
UL recognized
A
K
Unidirectional
Bidirectional
SMC
(JEDEC DO-214AB)
Description
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.
Order code
Part number
SM15TxxxA
SM15TxxxCA
Marking
See
See
Table 1.
Symbol
P
PP
P
I
FSM
T
stg
T
j
T
L
Absolute maximum ratings (T
amb
= 25
° C
)
Parameter
Peak pulse power dissipation
(1)
Power dissipation on infinite heatsink
Non repetitive surge peak forward current for unidirectional
types
Storage temperature range
Maximum operating junction temperature
Maximum lead temperature for soldering during 10 s.
T
j initial
= T
amb
T
amb
= 50° C
t
p
= 10ms
T
j initial
= T
amb
Value
1500
6.5
200
-65 to + 175
150
260
Unit
W
W
A
°C
°C
°C
1. For a surge greater than the maximum values, the diode will fail in short-circuit.
Table 2.
Symbol
R
th(j-l)
R
th(j-a)
Thermal parameter
Parameter
Junction to leads
Junction to ambient on printed circuit on recommended pad layout
Value
15
75
Unit
°C/W
°C/W
TM: TRANSIL is a trademark of STMicroelectronics
February 2007
Rev 4
1/9
www.st.com
9
STMICROELECTRONICS [ STMICROELECTRONICS ]
