SA90A 90.0 V 500 W Uni-Directional TVS Diode | DO-15 | Industrial & Power-Line Surge Protector HORNBY

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The SA90A is a 90 V, 500 W uni-directional TVS diode designed for protecting medium-voltage industrial DC rails, automation modules, communication interfaces, and control systems from high-energy transient surges. Its fast avalanche action and well-defined breakdown range ensure stable clamping during inductive switching, voltage spikes, and surge events.

Key Specifications

  • VRWM: 73.9 V

  • VBR: 85.594.5 V

  • VC: 144 V

  • Peak Pulse Power: 500 W

  • Package: DO-15

  • Response Time: < 1 ns

Applications

  • 7290 V industrial DC line protection

  • Motor, relay, and inductive load surge suppression

  • PLC and automation hardware protection

  • Power converter and SMPS input surge control

  • Field instrumentation and data-acquisition protection

Features

  • 500 W peak pulse surge capability

  • Precise clamping for medium-voltage DC systems

  • Ultra-fast avalanche response (<1 ns)

  • Rugged DO-15 glass-passivated package

  • Low leakage and reliable long-term stability