MDB6S

Bridge Rectifier Overview

The MDB6S is a single-phase bridge rectifier manufactured by onsemi, designed for surface-mount applications. It features a MICRODIP-4 package with dimensions of approximately 5.3 mm in length, 3.9 mm in width, and 2.1 mm in height. The device supports a maximum average forward rectified current (Io) of 1 A and offers peak repetitive reverse voltage (Vrrm) options ranging from 200 V to 1000 V. Key electrical parameters include a maximum forward voltage drop (Vf) of 1.1 V at 1 A, a non-repetitive peak forward surge current (Ifsm) of 30 A, and a maximum reverse leakage current (Ir) of 5 µA at rated voltage. It operates within a junction temperature range of -55 °C to +150 °C.

Bridge Rectifier Feature Summary

• Integrated single-phase bridge rectification in a compact surface-mount package
• High thermal stability supporting extended operating temperatures up to 150 °C
• Robust surge current handling capability for transient protection

Bridge Rectifier Applications

• AC-to-DC power supply circuits
• General-purpose rectification in consumer electronics
• Adapter and charger input stages

Bridge Rectifier Procurement Notes

Verify the specific voltage suffix (e.g., MDB6S2, MDB6S4, MDB6S6, MDB6S8, MDB6S10) corresponding to the required Peak Repetitive Reverse Voltage (Vrrm) rating, as the base part number denotes the package and current class rather than a single voltage value. Confirm RoHS compliance status through official datasheets or manufacturer documentation prior to integration.

Bridge Rectifier Selection Notes

Select the MDB6S variant based on the required reverse voltage rating relative to the AC input line. Ensure the PCB footprint matches the MICRODIP-4 package dimensions. Consider the thermal management requirements given the 1 A current rating and 1.1 V forward voltage drop, which results in significant power dissipation under load.

Bridge Rectifier Part Context

The MDB6S belongs to onsemi's family of surface-mount bridge rectifiers, distinguished by its MICRODIP-4 package which provides higher pin density compared to standard SOIC packages. This series complements other SMD bridge rectifiers like the MB6S (SOIC-4) and DFxxS series, offering a compact solution for space-constrained designs requiring 1 A rectification capability.

Bridge Rectifier Replacement Considerations

Direct pin-compatible replacements may include the MDB6S variants from other manufacturers offering identical MICRODIP-4 footprints and matching electrical ratings. Verify that substitute components meet the same Vf, Ir, and Ifsm specifications to ensure circuit performance parity.