Description

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 = 8/20µs)

◆ Transient protection for asymmetrical data lines to

IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)

IEC 61000-4-4 (EFT) 40A (5/50ns)

IEC 61000-4-5 (Lightning) 12A (8/20µs)

◆ Protects two +12V to -7V lines

◆ Low capacitance

◆ Low clamping voltage

◆ Solid-state silicon avalanche technology

Applications

◆ Protection of RS-485 transceivers with extended common-mode range

◆ Security systems

◆ Automatic Teller Machines

◆ HFC systems

◆ Networks