P6KE440 600W 440V UNIDIRECTIONAL TVS Diode
The P6KE440 is a Transient Voltage Suppressor (TVS) diode engineered to protect sensitive electronic components from damaging voltage transients. As a unidirectional device, it is designed to clamp voltage spikes in one polarity, specifically when a positive voltage surge exceeds the circuit’s normal operating range. Its primary role is to act as a robust electronic shield, diverting excessive transient current away from vulnerable circuits.
When a sudden over-voltage event, such as an electrostatic discharge (ESD) or inductive load switching spike, occurs, the P6KE440 reacts almost instantaneously. It shifts from a high-impedance state to a low-impedance state, effectively clamping the voltage to a safe, predetermined level. This action safely dissipates the high peak pulse energy, rated at 600 watts, through the diode, thereby maintaining the voltage across the protected circuit within its safe operating limits.
Housed in a DO-15 (also known as DO-204AC) package, this diode is physically robust and designed for straightforward PCB mounting. The component is marked for polarity identification, which is crucial for the correct installation of the unidirectional type. It is constructed from materials with a UL 94V-0 flammability rating and is compliant with major industry regulations concerning hazardous substances and supply chain ethics.
Features:
- Uni- and Bidirectional versions available.
- High peak pulse power dissipation of 600 W (based on a 10/1000 µs waveform).
- Very fast response time to transient voltage spikes.
- Compliant with RoHS (exemption 7a), REACH, and Conflict Minerals regulations.
- Commercial and industrial grade reliability.
- Optionally available in AEC-Q101 compliant (-Q) and qualified (-AQ) versions for automotive applications.
Specifications:
| Parameter | Test Condition | Value | Unit |
|---|---|---|---|
| Breakdown Voltage (VBR): | IR = 1 mA | 440 ±5% (418 – 462) | V |
| Stand-Off Voltage (VWM): | 376 | V | |
| Max. Clamping Voltage (VC): | IPP = 1.04 A (10/1000 µs) | 602 | V |
| Peak Pulse Power (PPP): | 10/1000 µs waveform | 600 | W |
| Max. Reverse Leakage Current (ID): | at VWM | 1 | µA |
| Operating Junction Temperature (TJ): | -50 to +175 | °C |
Applications:
- Over-voltage Protection.
- ESD Protection.
- Free-wheeling Diodes.
Package Contents:
- 1x P6KE440 600W 440V UNIDIRECTIONAL TVS Diode
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