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Introduction, characteristics, and applications of onsemi SZNUP3125 two-wire CAN bus protector

2/6/2024 9:00:00 AM

Summary: Protect CAN transceivers in 24V designs from ESD and other harmful surge protection events.

SZNUP3125 two wire CAN bus protector onsemi

onsemi SZNUP3125 dual-wire CAN bus protector is designed to protect CAN transceivers in 24V designs from ESD and other harmful surge protection events. The busbar protector has a single-line peak power consumption of 120W (8/20s waveform), a reverse leakage current of less than 100nA, and matching diode capacitance. The SZNUP3125 dual-wire CAN bus protector provides bidirectional protection for each data line in a single compact SC-70 (SOT-323) package. The device is lead free, rohs compliant, halogen/bfr free, and AEC-Q101 certified. Typical applications include CAN/CAN-FD, low- and high-speed CAN, fault-tolerant CAN, trucks, smart power distribution systems (SDS), and DeviceNet.


characteristic

  • 120W single line peak power consumption (8/20s waveform)

  • Diode Capacitance Matching

  • Low anti-leakage current less than 100nA

  • IEC Compatibility:

    • IEC 61000-4-2 (ESD): Level 4

    • IEC 61000-4-4 (EFT): 50A ~ 5/50ns

    • IEC 61000-4-5 (Lighting) 2A (8/20s)

  • Flammability rating UL 94 V-0

  • SZ prefix for use in automotive and other applications requiring unique site and control change requirements; AEC-Q101 certified with PPAP capability

  • Pb-free

  • Halogen/BFR-free

  • Passed lead-free certification


app

  • Automotive Network:

    • Yes/-FD

    • Low-speed CAN

    • Fault tolerance is ok

    • truck

  • Industrial control network:

    • Smart Distribution System (SDS)

    • Equipment network


-High-speed fault-tolerant CAN lightning protection circuit diagram


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