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Product Detailed Parameters
- Description：BRIDGE RECT 1PHASE 800V 4.5A GBU
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tube
- Diode Type：Single Phase
- Technology：Standard
- Voltage - Peak Reverse (Max)：800 V
- Current - Average Rectified (Io)：4.5 A
- Voltage - Forward (Vf) (Max) @ If：1.05 V @ 12.5 A
- Current - Reverse Leakage @ Vr：10 µA @ 800 V
- Operating Temperature：-55°C ~ 175°C (TJ)
- Mounting Type：Through Hole
- Package / Case：4-SIP, GBU
- Supplier Device Package：GBU
- Grade：-
- Qualification：-
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Overview
The GBU25H08-M3/P is a single in-line bridge rectifier manufactured by Vishay General Semiconductor. It features an 800 V maximum repetitive peak reverse voltage and supports a 25 A average forward rectified output current at a case temperature of 125 °C. The device utilizes glass passivated chip junctions and operates within a junction temperature range of -55 to +175 °C. Electrical characteristics include a maximum instantaneous forward voltage drop of 1.05 V at 12.5 A and 25 °C, with a typical reverse recovery time of 3500 ns. The component is housed in a GBU package with matte tin-plated leads.
Feature Summary
- Glass passivated chip junction for enhanced reliability
- High surge current capability with up to 700 A non-repetitive peak forward surge current
- High case dielectric strength rated at 2000 V RMS for one minute
- Halogen-free, RoHS-compliant base part number construction
Applications
- AC/DC bridge full wave rectification for switching power supplies
- Home appliance applications
- White-goods applications
- Telecom power supply systems
- Game PC power circuits
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm compliance attributes such as halogen-free status and lead finish. Confirm that the tube packaging aligns with assembly requirements. Ensure technical parameters match the application constraints before finalizing procurement decisions.
Selection Notes
Select this component based on the required 800 V blocking voltage and 25 A continuous current capacity. Evaluate thermal management needs, as the average forward current derates significantly when operating without a heatsink. Verify that the GBU package dimensions fit the printed circuit board layout and mounting torque specifications.
Part Context
This component belongs to the GBU series of single in-line bridge rectifiers from Vishay. The M3 suffix indicates compliance with RoHS directives and JESD 201 class 1A whisker testing standards. The P suffix designates the tube delivery mode for the GBU package style.
Replacement Considerations
Cross-reference with other Vishay GBU series variants or equivalent bridge rectifiers offering matching 800 V and 25 A ratings. Verify pinout compatibility and physical footprint alignment before substitution.
FAQ
What is the maximum non-repetitive peak forward surge current?
The device supports a non-repetitive peak forward surge current of 350 A for an 8.3 ms single sine-wave and 700 A for a 1.0 ms single sine-wave.
How does the forward voltage drop vary with temperature?
The maximum instantaneous forward voltage drop is 1.05 V at 25 °C and decreases to 0.86 V at 125 °C when conducting 12.5 A.
What are the thermal resistance values for this component?
The typical thermal resistance from junction to ambient is 24 °C/W, while the junction-to-case thermal resistance is 4 °C/W.
