MMBD1503

Overview

The onsemi MMBD1503 is a small signal switching diode housed in an SOT-23 (TO-236) package. It features a maximum repetitive reverse voltage of 200 V and an average rectified forward current rating of 200 mA. The device supports non-repetitive peak forward surge currents up to 2.0 A for short pulses. Electrical characteristics include a breakdown voltage of 200 V at 5.0 µA, with a forward voltage ranging from 620 mV to 720 mV at 1.0 mA. Total capacitance is specified at 4.0 pF under zero bias conditions.

Feature Summary

• High-voltage capability suitable for demanding switching applications
• Low leakage current performance across operating temperatures
• Compact surface-mount design for space-constrained layouts

Applications

• General-purpose signal switching circuits
• Voltage clamping and protection stages
• Logic level interfacing and isolation

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging quantity and shipping format. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a high-voltage small-signal diode is required in a compact SOT-23 footprint. Ensure the application current remains within the 200 mA average limit and verify thermal management requirements for power dissipation near the 350 mW maximum rating.

Part Context

This part belongs to the MMBD150x series of small signal diodes manufactured by onsemi. The series includes variants such as MMBD1501A, MMBD1504A, and MMBD1505A, which share similar electrical characteristics and physical packaging but differ in specific marking codes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.