GBU404-K

Overview

The GBU404-K is a single-phase bridge rectifier from the Taiwan Semiconductor GBU404-K to GBU407-K series. It features a maximum average forward current (IF) of 4 A and a repetitive peak reverse voltage (VRRM) of 400 V. The device utilizes a GBU package with four terminals and operates within a junction temperature range of -55 °C to +150 °C. Key electrical specifications include a maximum forward voltage of 1.1 V at 4 A, a surge peak forward current (IFSM) of 150 A, and a typical junction-to-case thermal resistance of 4 °C/W.

Feature Summary

• High case dielectric strength rated at 1500 VRMS for enhanced isolation
• Compliant with UL Recognized File E-326243 standards
• RoHS compliant and halogen-free according to IEC 61249-2-21
• Surge overload rating capable of handling 150 amperes peak

Applications

• Switching mode power supply (SMPS)
• Adapters
• Lighting application

Procurement Notes

Verify that the ordering code matches the required voltage rating, as the 'x' in the GBUx-K series defines the specific breakdown voltage. Confirm compliance requirements such as RoHS and halogen-free status if mandated by the target market regulations. Ensure the procurement documentation references the correct datasheet version E2103 to guarantee accurate parameter alignment during component qualification.

Selection Notes

Select this component when a 4 A continuous current capacity and 400 V blocking voltage are required for PCB-mounted applications. Consider the GBU package dimensions and mounting torque limits of 0.56 N⋅m during mechanical design. Evaluate the thermal performance using the specified junction-to-ambient resistance of 20 °C/W to ensure adequate heat dissipation under expected load conditions without exceeding the maximum junction temperature.

Part Context

This part belongs to the GBU404-K through GBU407-K product family manufactured by Taiwan Semiconductor. The series covers voltage ratings from 400 V to 1000 V while maintaining a consistent 4 A current rating and GBU package form factor. The suffix '-K' indicates the specific packaging configuration provided in tubes of 20 units per tube.

Replacement Considerations

Cross-reference with other GBU-series bridge rectifiers offering identical 4 A and 400 V specifications. Verify pinout compatibility and physical footprint matching before substitution. Ensure the alternative component meets or exceeds the 1500 VRMS dielectric strength and 150 A surge current capabilities documented for the original part.