KMB125S

Overview

The KMB125S is a single-phase Schottky bridge rectifier manufactured by SMC Diode Solutions. It features a maximum repetitive peak reverse voltage of 125 V and an average rectified output current of 2 A. The device utilizes a surface-mount MBS (Mini Bridge Rectifier) package, specifically identified as 4-SMD with gull wing leads. Key electrical characteristics include a maximum forward peak voltage of 920 mV at 2 A and a reverse leakage current of 50 μA at the rated 125 V. The component supports a wide operating junction temperature range from -55°C to +150°C and has a Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life under standard conditions.

Feature Summary

• Schottky technology provides low forward voltage drop for improved efficiency
• Surface-mount MBS package design optimizes PCB space utilization
• High-temperature operation capability up to 150°C junction temperature

Applications

• DC power supply circuits requiring compact rectification
• Battery charging systems
• General-purpose AC-to-DC conversion in consumer electronics

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging configuration, such as tape-and-reel quantities or cut-tape options. Ensure that the procurement channel sources components directly from authorized distributors to guarantee authenticity and traceability. Confirm RoHS compliance status and REACH registration details prior to finalizing purchase orders for regulatory adherence.

Selection Notes

Select this component when a low-profile surface-mount bridge rectifier is required for currents up to 2 A. The Schottky construction makes it suitable for applications prioritizing efficiency over high-voltage blocking capabilities. Compare the 125 V rating against circuit peak inverse voltage requirements to ensure adequate margin. Evaluate the thermal management needs given the small MBS footprint and 150°C junction limit.

Part Context

The KMB125S belongs to the KMB series of Schottky bridge rectifiers from SMC Diode Solutions. This series is designed for general-purpose rectification in space-constrained designs. It complements other voltage variants within the same package family, offering consistent mechanical dimensions while varying electrical ratings to suit different input voltage levels in power supply architectures.

Replacement Considerations

Cross-reference with other 2 A, 125 V Schottky bridge rectifiers in the 4-SMD MBS package. Verify pinout compatibility and thermal characteristics before substitution. Ensure equivalent forward voltage and reverse leakage specifications are met to maintain circuit performance.