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

Part No. SMAJ7.0A
Description  Transient Voltage Suppression Diodes
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Maker  LITTELFUSE [Littelfuse]
Homepage  http://www.littelfuse.com
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Revision: November 17, 2011, 16:25
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
1
SMAJ Series
Surface Mount – 400W > SMAJ series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
SMAJ Series
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.
• Halogen-Free
• RoHS compliant
• For surface mounted
applications to optimize
board space
• Low profile package
• Built-in strain relief
• Glass passivated junction
• Low inductance
• Excellent clamping
capability
• 400W Peak Pulsepower
capability at 10 x 1000µs
waveform, repetition rate
(duty cycle): 0.01%
• Fast response time:
typically less than 1.0ps
from 0 Volts to V
BR min
• Typical I
R less than 1µA
above 12V
• High temperature
soldering: 260°C/40
seconds at terminals
• Typical maximum
temperature coefficient
ΔV
BR = 0.1% x VBR@25°C x ΔT
• Plastic package has
Underwriters Laboratory
Flammability 94V-O
• Matte Tin Lead–free
Plated
RoHS
Pb




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