SGS Thomson Microelectronics SM2T14A, SM2T18A, SM2T27A Datasheet
®
FEATURES AND BENEFITS
High Peak pulse power:
■
200 W (10/1000 µs )
1000 W ( 8/20 µs)
Stand-off voltage range 5 to 24V
■
Unidirectional types
■
Low clamping factor V
■
Fast response time
■
1.0mm overall component height
■
CL/VBR
SM2T series
Transient Voltage Suppressor: TRANSIL ™
A
DESCRIPTION
K
The SM2T series are Transil diodes designed specifically
for portable equipment and miniaturized electronics devices subject to ESD transient overvoltages.
Fully compatible with pick and place equipment and
inspectable soldering joints.
DO-216AA
(ST mite)
ABSOLUTE RATINGS (Tamb = 25°C)
Symbol Parameter Value Unit
P
PP
Peak pulse power dissipation (see note 1) Tj initial = Tamb 200 W
P Power dissipation on infinitive heatsink Tamb = 100°C 2.5 W
I
FSM
Non repetitive surge peak forward current tp = 10 ms
25 A
Tj initial = Tamb
T
stg
Tj
Storage temperature range
Maximum operating junction temperature
-65to+175
150
TL Lead solder temperature (10 seconds duration) 260 °C
Note 1: 10/1000µs pulse waveform.
THERMAL RESISTANCES
°C
Symbol Parameter Value Unit
Rth (j-t) Junction to tab 20 °C/W
Rth (j-a) Junction to ambient on PCB with recommended pad layout 250 °C/W
April 2002 - Ed: 1A
1/5
SM2T series
ELECTRICAL CHARACTERISTICS (Tamb = 25°C)
Symbol Parameter
V
RM
V
BR
V
CL
I
RM
I
PP
Stand-off voltage
Breakdown voltage
Clamping voltage
Leakage current @ V
Peak pulse current
RM
VV
CLVBR
V
RM
I
I
F
V
F
I
RM
αT Voltage temperature coefficient
I
PP
Types
I
max@V
RM
RM
VBRmin@I
R
VCLmax@I
Note 1
PP
SM2T6V8A 50µA 5V 6.4V 10 mA 9.2V 19.6A 5.7 1600pF
SM2T14A 1µA 12V 13.3V 1 mA 19.9V 9.0A 8.3 650pF
SM2T18A 1µA 16V 17.1V 1 mA 26V 7A 8.8 500pF
SM2T27A 1µA 24V 25.7V 1 mA 38.9V 4.6A 9.6 350pF
T max
10-4/°C
V
C typ
at 0V
Note 1: 10/1000µs pulse waveform.
Fig. 1: Peak pulse power versus exponential pulse dura-
tion.
P (W)PP
1.E+04
1.E+03
1.E+02
t (ms)P
1.E+01
0.01 0.10 1.00 10.00
Tjinitial = 25°C
Fig. 2: Relativevariation of peak pulse power versus initial
junction temperature.
%
110
100
90
80
70
60
50
40
30
20
10
0
0 25 50 75 100 125 150 175
Tj(°C)
2/5
Loading...