Overview
The SM712 transient voltage suppressor (TVS) diode is designed for asymmetrical (12V to -7V) protection in multi-point data transmission standard RS-485 applications. The SM712 may be used to protect devices from transient voltages resulting from electrostatic discharge (ESD), electrical fast transients (EFT) and lightning.
Features
- 400 watts peak pulse power (tp = 8/20 µs)
- Transient protection for asymmetrical data lines to
- IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
- IEC 61000-4-4 (EFT) 40 A (5/50 ns)
- IEC 61000-4-5 (Lightning) 12 A (8/20 µs)
- Protects two +12 V – -7 V lines
- Low capacitance
- Low clamping voltage
- Solid-state silicon-avalanche technology
- Lead-free, RoHS and WEEE compliant
| Documents | Release Date | Type |  |
|---|---|---|---|
| SM712 Datasheet | 2019-02-07 | | |
| TVS Peak Pulse Power vs. Pulse Duration | 2024-08-12 | | |
| TVS Power Derating Versus Temperature | 2025-02-13 | | |
Applications
- Protection of RS-485 transceivers with extended common-mode range
- Security systems
- Automatic teller machines
- HFC systems
- Networks
Inventory
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