PU4BCH

Single Diodes Overview

The PU4BCH is an ultra-fast recovery rectifier manufactured by Taiwan Semiconductor Corporation. It features a single diode configuration housed in a DO-214AB (SMA) surface-mount package. The device supports a maximum repetitive peak reverse voltage of 100 V and an average forward rectified current of 4 A. Key electrical characteristics include a typical forward voltage of 840 mV, a maximum reverse leakage current of 2 uA, and a fast recovery time of 25 ns. It withstands a maximum surge current of 290 A and operates within a junction temperature range of -55 °C to +175 °C. The component holds AEC-Q101 qualification for automotive applications.

Single Diodes Feature Summary

• Ultra-fast recovery performance with 25 ns switching speed for high-efficiency power conversion
• Glass passivated chip junction ensuring stable operation under harsh conditions
• Automotive-grade reliability certified under AEC-Q101 standards
• Surface-mount design compatible with automated placement processes

Single Diodes Applications

• Automotive electronics systems requiring robust rectification
• High-frequency DC-DC converter circuits
• Power supply units utilizing surface-mount technology
• General-purpose rectification in compact electronic devices

Single Diodes Procurement Notes

Verify the specific suffix codes on the ordering information to confirm packaging type and material composition, as these do not alter the electrical function but affect handling. Confirm RoHS compliance status and halogen-free designation through official datasheets before procurement. Ensure the supplier provides valid traceability documentation for AEC-Q101 qualified components intended for automotive use.

Single Diodes Selection Notes

Select this component when a 4 A current rating and 100 V blocking voltage are required in a small SMA footprint. The 25 ns recovery time makes it suitable for high-frequency applications where standard rectifiers would fail. Compare thermal resistance and surge current capabilities against alternative packages like SMB or SMC if higher current handling is needed. Verify that the operating temperature range meets the specific environmental requirements of the target application.

Single Diodes Part Context

This part belongs to the PU series of ultra-fast recovery rectifiers from Taiwan Semiconductor. The series offers various current ratings and voltage options in different surface-mount packages. The PU4BCH specifically targets applications needing moderate current capacity with fast switching speeds in a compact form factor. It complements other parts in the lineup such as the PU3BCH and PUAD4BH, which offer similar electrical characteristics in different physical packages.

Single Diodes Replacement Considerations

Direct replacements must match the 4 A current, 100 V voltage, and DO-214AB package dimensions. Check equivalent parts from other manufacturers for identical pinout and thermal characteristics. Verify that substitute components also meet AEC-Q101 requirements if used in automotive contexts.