PUAD8DCH

Overview

The PUAD8DCH is a general-purpose diode array manufactured by Taiwan Semiconductor Corporation, housed in a ThinDPAK (TO-252-3) surface-mount package. It features a dual common-cathode configuration with a maximum repetitive reverse voltage of 200 V and an average forward rectified current of 8 A per diode. The device exhibits a fast recovery time of 25 ns and a low reverse leakage current of 2 µA at 200 V. With a maximum forward voltage of 920 mV at 4 A and an operating junction temperature range from -55°C to 175°C, it meets AEC-Q101 automotive qualification standards for reliability in demanding environments.

Feature Summary

• Dual common-cathode configuration providing two independent rectifying paths within a single compact surface-mount package.
• Fast recovery characteristics with a typical reverse recovery time of 25 ns, suitable for high-frequency switching applications.
• Automotive-grade reliability certified under the AEC-Q101 standard, ensuring robust performance in vehicle electronics.
• Extended thermal capability with a maximum junction temperature rating of 175°C for operation in high-heat environments.

Applications

• Automotive power supply circuits requiring AEC-Q101 qualified components
• DC-DC converter output rectification stages
• General-purpose freewheeling diode applications in switching power supplies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm packaging type and tape-and-reel specifications. Ensure that the procurement channel sources genuine parts directly from authorized distributors or the manufacturer to guarantee AEC-Q101 compliance and traceability. Cross-reference the part number with the latest revision notes to confirm pinout compatibility and electrical parameter consistency before integration into production designs.

Selection Notes

Select this component when a dual common-cathode arrangement is required in a TO-252-3 footprint for space-constrained designs. The 200 V rating and 8 A current capacity make it suitable for low-voltage, high-current DC-DC conversion stages. Consider the 25 ns recovery time for applications where switching losses must be minimized but ultra-fast recovery is not strictly necessary. Verify thermal management requirements given the 175°C junction limit and the thermal resistance characteristics of the ThinDPAK package.

Part Context

The PUAD8DCH belongs to the PUAD series of ultra-fast recovery rectifiers from Taiwan Semiconductor. This series is designed for surface-mount applications requiring high efficiency and reliability. The DCH suffix typically denotes the 200 V voltage rating variant within the PUAD family, distinguishing it from other voltage grades such as the 100 V or 600 V versions available in the same package style.

Replacement Considerations

Consult the official PUAD8BCH–PUAD8DCH datasheet for direct cross-reference information. Verify that any substitute maintains the 200 V reverse voltage, 8 A current rating, and TO-252-3 package dimensions. Ensure the replacement also holds AEC-Q101 certification if automotive qualification is required for the application.