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P4KE550A from VISHAY

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P4KE550A

Manufacturer: VISHAY, VIS

Silicon Avalanche Diodes - 400W Axial Leaded Transient Voltage Supressors

Partnumber Manufacturer Quantity Availability
P4KE550A VISHAY, VIS 25900 In Stock

Description and Introduction

Silicon Avalanche Diodes - 400W Axial Leaded Transient Voltage Supressors **Introduction to the P4KE550A TVS Diode from VISHAY**  

The P4KE550A is a high-performance transient voltage suppression (TVS) diode designed to protect sensitive electronic circuits from voltage spikes and transients. Manufactured by VISHAY, this component is part of the P4KE series, which is widely recognized for its reliability and robust protection capabilities.  

With a standoff voltage of 467V and a breakdown voltage ranging between 519V and 573V, the P4KE550A is ideal for applications requiring protection against high-energy surges. It features a peak pulse power dissipation of 400W (10/1000μs waveform) and a low clamping voltage, ensuring minimal stress on protected circuits.  

The diode’s fast response time—typically in the picosecond range—enables it to react swiftly to transient events, diverting excess energy away from critical components. Its axial-leaded package makes it suitable for through-hole mounting, providing ease of integration in various circuit designs.  

Common applications include power supplies, telecommunications equipment, industrial controls, and automotive electronics, where safeguarding against electrostatic discharge (ESD), lightning strikes, and inductive load switching is essential.  

Engineers favor the P4KE550A for its proven performance in harsh electrical environments, making it a dependable choice for surge protection in demanding applications.

Application Scenarios & Design Considerations

Silicon Avalanche Diodes - 400W Axial Leaded Transient Voltage Supressors

Alternative Part Number

  • 1N5550 --: Standard axial-leaded unidirectional TVS/rectifier with comparable 550V-class standoff and through-hole package, widely available as a cross for axial surge-protection diodes.
  • BZW04-550 --: Unidirectional transient voltage suppressor in DO-41 axial package with similar 550V working voltage and peak pulse power, suitable drop-in replacement.
  • SMAJ550A --: Surface-mount unidirectional TVS with 550V standoff and comparable clamping performance; choose if SMD assembly is acceptable instead of axial leaded.
  • 1.5KE550A --: Same 550V standoff unidirectional TVS in a larger 1.5kW DO-201 package, widely available and a common upgrade for higher surge margin.
  • SMAJ550A --: 550V unidirectional TVS in SMA package with similar clamping behavior, suitable for space-constrained designs needing a smaller footprint.
  • P6KE550A --: 600W 550V unidirectional TVS in DO-15 package, close electrical match with slightly higher power rating and broad second-source availability.

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