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P4SMA400CA from VISHAY

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P4SMA400CA

Manufacturer: VISHAY, GS

Silicon Avalanche Diodes - 400W Surface Mount Transient Voltage Supressors

Partnumber Manufacturer Quantity Availability
P4SMA400CA VISHAY, GS 120000 In Stock

Description and Introduction

Silicon Avalanche Diodes - 400W Surface Mount Transient Voltage Supressors The **P4SMA400CA** from **VISHAY** is a high-performance **surface-mount transient voltage suppressor (TVS) diode** designed to protect sensitive electronic circuits from voltage spikes and transients. This component is part of the **P4SMA series**, which is widely recognized for its reliability and robust protection capabilities in a compact **DO-214AC (SMA) package**.  

With a **standoff voltage of 400V** and a **peak pulse power dissipation of 400W**, the P4SMA400CA effectively clamps transient overvoltages, safeguarding downstream components from damage caused by electrostatic discharge (ESD), lightning surges, or inductive load switching. Its low clamping voltage ensures minimal stress on protected circuits, while its fast response time (nanosecond range) provides immediate protection against sudden voltage spikes.  

The **unidirectional** configuration of the P4SMA400CA makes it ideal for DC applications where transient suppression in a single polarity is required. Its **high surge current capability** and **low leakage current** enhance performance in demanding environments, including industrial, automotive, and telecommunications systems.  

Engineers favor this TVS diode for its **rugged construction**, **consistent performance**, and compliance with industry standards. Whether used in power supplies, data lines, or communication interfaces, the P4SMA400CA delivers reliable overvoltage protection in a space-efficient form factor.

Application Scenarios & Design Considerations

Silicon Avalanche Diodes - 400W Surface Mount Transient Voltage Supressors

Alternative Part Number

  • SMAJ400CA --: Same SMA package bidirectional 400V TVS diode with comparable clamping voltage and power rating, widely available and pin-compatible.
  • SMBJ400CA --: Bidirectional 400V TVS in SMB package offering higher surge power margin; usable if board space allows the slightly larger footprint.
  • 1.5SMC400CA --: 400V bidirectional TVS with 1500W peak pulse rating in SMC package, providing extra surge capability as a robust substitute.
  • SMAJ400CA --: Same SMA package bidirectional 400V TVS diode with comparable clamping performance, widely available from a major supplier.
  • SMBJ400CA --: Bidirectional 400V TVS in SMB package; slightly larger footprint but offers similar or higher surge rating and is a common drop-in substitute.
  • 1.5SMC400CA --: Bidirectional 400V TVS in SMC package with higher peak pulse power, suitable when extra surge margin is acceptable and board space allows.

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