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P4SMA440A from VISHAY

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P4SMA440A

Manufacturer: VISHAY, GS

ARK Electronics - Surface Mount Transient Voltage Suppressors Peak Pulse Power 400W Breakdown Voltage 6.8 to 550V

Partnumber Manufacturer Quantity Availability
P4SMA440A VISHAY, GS 120000 In Stock

Description and Introduction

ARK Electronics - Surface Mount Transient Voltage Suppressors Peak Pulse Power 400W Breakdown Voltage 6.8 to 550V The **P4SMA440A** 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 used in applications requiring robust overvoltage protection, such as telecommunications, industrial systems, and consumer electronics.  

With a **standoff voltage of 440V** and a **breakdown voltage range of 488V to 539V**, the P4SMA440A offers reliable clamping performance for high-voltage environments. Its **peak pulse power dissipation of 400W (10/1000μs waveform)** ensures effective suppression of transient surges, safeguarding downstream components. The device features a **low clamping voltage**, minimizing stress on protected circuits while maintaining fast response times.  

Encased in a **DO-214AC (SMA) package**, the P4SMA440A is compact and suitable for automated PCB assembly. Its **unidirectional polarity** makes it ideal for DC applications, providing protection against positive voltage transients.  

Engineers favor this TVS diode for its **high surge capability**, **low leakage current**, and **consistent performance** under harsh conditions. Whether used in power supplies, data lines, or automotive systems, the P4SMA440A delivers dependable overvoltage protection, enhancing system reliability and longevity.

Application Scenarios & Design Considerations

ARK Electronics - Surface Mount Transient Voltage Suppressors Peak Pulse Power 400W Breakdown Voltage 6.8 to 550V

Alternative Part Number

  • SMAJ440A --: Same SMA package unidirectional TVS diode with 440V standoff voltage and comparable clamping performance, from a different series and manufacturer.
  • SMBJ440A --: Unidirectional 440V TVS diode with similar electrical ratings; SMB package is slightly larger but offers higher surge capability and is a common drop-in upgrade.
  • 1.5SMC440A --: 440V unidirectional TVS diode in SMC package with higher peak pulse power, suitable when board space allows and extra surge margin is desired.
  • SMAJ440A --: Same SMA package unidirectional TVS diode with 440V standoff voltage, directly interchangeable.
  • SMBJ440A --: Unidirectional 440V TVS diode with equivalent clamping performance; SMB package is slightly larger but electrically compatible.
  • 1.5SMC440A --: 440V unidirectional TVS diode with similar surge rating, suitable substitute when board space allows a larger SMC package.

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