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Product Detailed Parameters
- Description：BRIDGE RECT 1P 400V 800MA MBS
- Series：-
- Mfr：Comchip Technology
- Package：Tape & Reel (TR)
- Diode Type：Single Phase
- Technology：Standard
- Voltage - Peak Reverse (Max)：400 V
- Current - Average Rectified (Io)：800 mA
- Voltage - Forward (Vf) (Max) @ If：1.1 V @ 800 mA
- Current - Reverse Leakage @ Vr：5 µA @ 400 V
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-269AA, 4-BESOP
- Supplier Device Package：MBS
- Grade：-
- Qualification：-
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Overview
The B4S-HF is a single-phase bridge rectifier manufactured by Comchip Technology. It features a peak repetitive reverse voltage of 400 V and an average forward rectified current of 800 mA. The device utilizes a Molded Body Small Outline (MBS) surface-mount package, specifically identified as TO-269AA or 4-BESOP. Electrical characteristics include a maximum forward voltage drop of 1.1 V at 800 mA and a leakage current of 5 µA at 400 V. The component operates within a junction temperature range of -55°C to +150°C.
Feature Summary
- Single-phase bridge rectification configuration for AC-to-DC conversion
- Surface-mount MBS packaging designed for automated assembly processes
- High thermal stability supporting operation up to 150°C junction temperature
Applications
- General-purpose power supply circuits
- Adapter and charger modules
- Low-power DC power distribution systems
Procurement Notes
Verify the specific manufacturer part number against official Comchip Technology documentation to confirm electrical ratings and package dimensions. Ensure that the procurement source provides valid RoHS compliance certificates and material declarations. Cross-reference datasheet revisions to ensure compatibility with design requirements before finalizing orders.
Selection Notes
Select this component when a compact single-phase rectification solution is required for low-current applications. The 800 mA rating suits designs where space constraints preclude larger through-hole packages. Verify that the 400 V reverse voltage rating exceeds the peak inverse voltage present in the target circuit to ensure reliable operation under all conditions.
Part Context
The B4S-HF belongs to Comchip Technology's line of molded body small outline bridge rectifiers. This series integrates four diodes into a single surface-mount package to replace discrete diode arrangements. The product serves as a direct replacement for legacy through-hole bridge rectifiers in modern PCB layouts requiring reduced footprint.
Replacement Considerations
The B4S-G is listed as a manufacturer-recommended alternative. Verify pinout compatibility and exact thermal characteristics when substituting between these variants.
