TVS Diodes
Surface Mount > 400W > 1SMA5.0AT3G Series
Pb
1SMA5.0AT3G Series
Description
The 1SMA5.0AT3G series is designed to protect voltage
sensitive components from high voltage, high energy
transients. They have excellent clamping capability, high
surge capability, low zener impedance and fast response
time. The 1SMA5.0AT3G series is supplied in the Littelfuse
exclusive, cost-effective, highly reliable package and is
ideally suited for use in communication systems,
automotive, numerical controls, process controls, medical
equipment, business machines, power supplies and many
other industrial/consumer applications.
Features
• Working Peak Reverse Voltage Range − 5.0 V to 78 V
Maximum Ratings andThermal Characteristics
• Standard Zener Breakdown Voltage Range −
6.7 V to 91.25 V
Parameter
Symbol
PPK
Value
400
Unit
W
• Peak Power − 400 W @ 1 ms
Peak Power Dissipation (Note 1) @ TL =
25°C, Pulse Width = 1 ms
• ESD Rating of Class 3 (> 16 kV) per Human Body Model
• ResponseTime isTypically < 1 ns
• Flat Handling Surface for Accurate Placement
DC Power Dissipation @ TL = 75°C
Measured Zero Lead Length (Note 2)
W
1.0
20
50
PD
• Package Design forTop Slide or Bottom Circuit
Board Mounting
Derate Above 75°C
mW/°C
°C/W
Thermal Resistance from Junction
to−Lead
RJL
• Low Profile Package
• These are Pb−Free Device
DC Power Dissipation (Note 3)
@ TA = 25°C
P
0.5
4.0
250
W
D
mW/°C
°C/W
Derate Above 25°C
Functional Diagram
R
Thermal Resistance from Junction–to–
Ambient
0JA
Cathode
Anode
Forward Surge Current (Note 4) @ TA
= 25°C
IFSM
40
A
Additional Information
Operating and Storage Temperature
Range
-65 to
+150
TJ, Tstg
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If
any of these limits are exceeded, device functionality should not be assumed, damage may
occur and reliability may be affected.
Samples
Datasheet
Resources
1. 10 X 1000 µs, non−repetitive.
2. 1” square copper pad, FR−4 board.
3. FR−4 board, using Littelfuse minimum recommended footprint, as shown in 403D-02
case outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per
minute maximum.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17