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SMAJ7.0CA Datasheet(PDF) 1 Page - Littelfuse

Part No. SMAJ7.0CA
Description  Transient Voltage Suppression Diodes
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Maker  LITTELFUSE [Littelfuse]
Homepage  http://www.littelfuse.com
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7
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
Surface Mount – 400W > SMAJ series
SMAJ Series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
SMAJ Series
RoHS
Description
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Features
Maximum Ratings and Thermal Characteristics
(T
A=25
O
C unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak Pulse Power Dissipation at
T
A=25ºC by 10x1000μs waveform
(Fig.1)(Note 1), (Note 2)
P
PPM
400
W
Power Dissipation on infinite heat
sink at T
A=50
O
C
P
M(AV)
3.3
W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
I
FSM
40
A
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
only (Note 4)
V
F
3.5V/6.5
V
Operating Junction and Storage
Temperature Range
T
J, TSTG
-65 to 150
°C
Typical Thermal Resistance Junction
to Lead
R
uJL
30
°C/W
Typical Thermal Resistance Junction
to Ambient
R
uJA
120
°C/W
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above T
A=25ºC per Fig. 2.
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only.
4. V
F < 3.5V for VBR _
<
200V and V
F< 6.5V for VBR _
>
201V.
The SMAJ series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
CC bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
applications to optimize
board space
capability
capability at 10 x 1000μs
waveform, repetition rate
(duty cycle): 0.01%
typically less than 1.0ps
from 0 Volts to V
BR min
R less than 1μA
above 12V
soldering: 260°C/40
seconds at terminals
temperature coefficient
ΔV
BR = 0.1% x VBR@25°C x ΔT
Underwriters Laboratory
Flammability 94V-O
Plated




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