P4KE43A 43 V Unidirectional Transient Voltage Suppressor Diode | 400 W Peak Pulse Power | DO-204AC (DO-41) HORNBY

HORNBY

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The P4KE43A is a unidirectional TVS diode engineered to safeguard electronic circuits against high-energy surges, ESD strikes, and transient overvoltage events. With a 43 V breakdown rating, fast-acting clamping behavior, and a durable 400 W peak pulse power capability, it provides dependable protection in power supplies, industrial controllers, and communication interfaces.

Key Specifications

  • Breakdown Voltage (V<sub>BR</sub>): 40.85 V 45.15 V

  • Working Peak Reverse Voltage (V<sub>R</sub>): 36.8 V

  • Test Current (I<sub>T</sub>): 1 mA

  • Clamping Voltage (V<sub>C</sub>): 59.8 V at 6.7 A

  • Peak Pulse Power (P<sub>PP</sub>): 400 W (10/1000 µs)

  • Reverse Leakage (I<sub>R</sub>): ≤ 5 µA at V<sub>R</sub>

  • Polarity: Unidirectional

  • Package: DO-204AC (DO-41)

Applications

  • Industrial power line surge suppression

  • Automotive driver and controller protection

  • Communication ports and interface protection

  • AC/DC converter and adapter input protection

  • Microprocessor and logic circuitry safeguarding

Features

  • Rugged 400 W transient handling capability

  • Rapid clamping response to voltage spikes

  • Very low reverse leakage for stable operation

  • Glass-passivated junction for long-term reliability

  • Standard DO-41 package for easy PCB mounting