PUAD8BC

Overview

The PUAD8BC is a dual common cathode ultra-fast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It is housed in a surface-mount TO-252-3 package, also known as DPAK. The device features two independent diodes within a single compact enclosure, designed for high-efficiency power conversion applications. Key electrical specifications include a maximum repetitive peak reverse voltage of 100 V and an average forward rectified current of 8 A per element. The component exhibits a typical reverse recovery time of 25 ns, ensuring minimal switching losses during high-frequency operation. It supports a non-repetitive peak surge forward current of 200 A, providing robust protection against transient overloads. The operating junction temperature range extends from -55°C to +175°C, ensuring reliability under demanding thermal conditions.

Feature Summary

• Dual common cathode configuration integrates two independent rectifiers into a single compact surface-mount package.
• Ultra-fast recovery characteristics with a typical reverse recovery time of 25 ns minimize switching losses.
• High current handling capability with an 8 A average forward current rating per diode element.
• Extended thermal stability supports reliable operation across a wide junction temperature range up to 175°C.

Applications

• High-frequency DC/DC converter circuits
• Free-wheeling rectification in synchronous buck converters
• Power factor correction (PFC) stages
• Uninterruptible power supply (UPS) systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required packaging options such as tape and reel quantities. Confirm that the selected variant meets all necessary regulatory compliance standards for your target market. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component for applications requiring fast switching speeds and high current density in a small footprint. Ensure the circuit design accounts for the 100 V reverse voltage rating and thermal management requirements for 8 A continuous operation. Evaluate the trade-off between the ultra-fast recovery performance and potential ringing effects in high-frequency environments compared to standard recovery alternatives.

Part Context

This component belongs to Taiwan Semiconductor's lineup of discrete power rectifiers, specifically designed for efficient energy conversion. The PUAD8BC utilizes advanced silicon planar technology to achieve low forward voltage drop and high surge current capability. Its TO-252-3 package provides superior thermal dissipation compared to smaller surface-mount options, making it suitable for medium-power industrial and consumer electronics applications.

Replacement Considerations

Consult official cross-reference lists for direct pin-compatible substitutes with matching electrical ratings. Verify that alternative components maintain equivalent reverse recovery times and current handling capabilities to ensure circuit performance consistency without redesign.

FAQ

What is the package type for the PUAD8BC?

The PUAD8BC is available in a TO-252-3 surface-mount package, commonly referred to as DPAK.

Does the PUAD8BC contain one or two diodes?

It contains two independent diodes configured in a common cathode arrangement within a single package.