GBU4B-T

Overview

The GBU4B-T is a single-phase bridge rectifier manufactured by Diotec Semiconductor, designed for general-purpose power supply applications. It features a glass-passivated chip junction and utilizes a molded plastic case with a UL flammability classification rating of 94V-0. The device supports a maximum repetitive peak reverse voltage of 400V and an average forward rectified current of 4A at 25°C. It operates within a junction temperature range of -55°C to +150°C and offers high surge overload capability. The component is available in the GBU package and complies with RoHS standards.

Feature Summary

• Glass-passivated chip junctions provide reliable operation and protection against transient voltage conditions.
• Molded plastic case ensures mechanical robustness with UL flammability classification rating 94V-0.
• High surge overload rating allows the device to withstand temporary current spikes during startup or fault conditions.

Applications

• General-purpose AC-to-DC conversion in power supplies
• Battery charging circuits
• Adapters and inverters

Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration, as standard availability may vary between cut tape, reel, or tube formats depending on the distributor. Confirm that the requested quantity aligns with the manufacturer's minimum order requirements for the selected packaging type to ensure timely fulfillment.

Selection Notes

Select this component when a 4A single-phase bridge rectifier with a 400V reverse voltage rating is required. Ensure the application environment stays within the specified -55°C to +150°C junction temperature range. Verify that the PCB footprint matches the GBU package dimensions and that thermal management strategies account for the forward voltage drop at the expected load current.

Part Context

Diotec Semiconductor produces discrete semiconductors including diodes, rectifiers, and transistors. The GBU series represents their line of glass-passivated bridge rectifiers, offering solutions for industrial and consumer electronics. This product line emphasizes reliability through standardized packaging and compliance with international environmental directives such as RoHS.

Replacement Considerations

Cross-reference with other 4A/400V GBU-package bridge rectifiers from manufacturers like MCC or Vishay. Ensure pinout compatibility and thermal characteristics match before substitution. Verify that any alternative part meets the same UL 94V-0 flammability rating and RoHS compliance status.