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Datasheet
Series Page
Problem/Solution
Automotive electronics continue increasing in volume and
sophistication, and all these components require protection from high
voltage, high energy transients. The SZSMF4L TVS Diode Series
protects these sensitive systems with fast response time, low Zener
impedance, high surge handling, and excellent clamping capabilities.
Its low leakage current is also ideal for protecting sensors. Due to its
small size, it is suitable for most automotive applications, especially
vehicle electrification.
Markets/Applications
▪ EV power train
▪ On Board Charging (OBC)
▪ Battery Management System (BMS)
▪ Power Distribution Units (PDU)
▪ EV invertors
▪ Domain and zone controllers
▪ Body Control Module
SZSMF4L 400 W Surface Mount TVS Diode Series
Automotive Grade in Small SOD-123FL Package
Benefits
▪ Excellent voltage clamping capabilities
▪ Automotive grade change control and PCN procedure
▪ Fast response time: Typically @ < 1 ns
▪ ESD rating: Class 3, > 16 kV (per human body model)
▪ Saves board space with a small SOD-123FL package size
Features
▪ Zener transient overvoltage suppressors
▪ Working peak reverse voltage range for
unidirectional @ 5 to 78 V, bi-directional @ 10 to 78 V
▪ Peak power: 400 W @ 1 ms
▪ Operating temperature: up to 175˚ C
▪ Planar chip design with low leakage current performance
▪ AEC−Q101 qualified and PPAP capable
Application Note
Tech info
222
Littelfuse, Inc. © 2023
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Technical resources (Click on below icons to learn more)
Datasheet
Series Page
Problem/Solution
The SMF4L-T1G series protects sensitive electronic components from
high voltage and high energy transients. It offers a fast response time,
high surge current ratings, and low dynamic resistance for excellent
clamping capabilities. Because of its small size, it is ideal for use in
portable consumer electronics applications. The low leakage is well
suited for protecting I/O interfaces, Vcc buses, and other vulnerable
circuits used in battery-operated electronics.
Markets/Applications
▪ Smartphones
▪ Laptops/ Tablets
▪ Small appliances
▪ Portable electronics
▪ Business machines
▪ Power supplies
▪ Industrial, radio and
walkie talkies
SMF4L-T1G Series Surface Mount TVS Diode
400 W low leakage performance, compact SOD-123FL package, for protecting portable electronics
Benefits
▪ TVS Diode overvoltage suppressor
▪ Low leakage of 0.1uA (13 V to 78 V)
▪ Saves PCB space
▪ Environmentally friendly
Features
▪ Working peak reverse voltage range: 5 V to 78 V for unidirectional
▪ Peak power: 400 watts @ 10/1000 µs
▪ Response time is typically < 1 ns
▪ Compact SOD-123FL package (8.45mm
2
footprint)
▪ Pb-free and RoHS compliant