MMBD1705A

Overview

The onsemi MMBD1705A is a small signal switching diode housed in an SOT-23 surface-mount package. It features a maximum repetitive reverse voltage of 30 V and supports an average rectified forward current of 50 mA. The device exhibits a non-repetitive peak forward surge current capability of 250 mA with a pulse width of 1.0 second. Electrical characteristics include a breakdown voltage of 30 V at 5.0 µA reverse current, a maximum reverse current of 50 nA at 20 V, and a total capacitance of 1.0 pF at 0 V and 1.0 MHz. Reverse recovery time ranges from 0.7 ns to 1.0 ns under specified test conditions.

Feature Summary

• High-speed switching performance with low reverse recovery time for efficient signal processing
• Low total capacitance to minimize signal distortion in high-frequency applications
• Robust thermal management capabilities within the compact SOT-23 form factor

Applications

• General purpose signal switching circuits
• Clamping and protection in digital logic interfaces
• Demodulation in RF signal processing paths

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches SOT-23 requirements. Ensure storage temperature range aligns with operational needs. Validate RoHS compliance status prior to integration into final assemblies.

Selection Notes

Select this component when circuit design requires a 30 V reverse voltage rating and 50 mA continuous forward current capacity. Consider the low capacitance value for high-speed signal integrity. Evaluate thermal resistance parameters for heat dissipation constraints in dense PCB layouts.

Part Context

This device belongs to the MMBD170x series of small signal diodes originally developed by Fairchild Semiconductor. The series includes variants such as MMBD1701, MMBD1703, and MMBD1704, offering different electrical characteristics while sharing the same physical package. Current manufacturing rights are held by onsemi.

Replacement Considerations

Direct substitutes within the same series include MMBD1701, MMBD1703, and MMBD1704. Verify specific electrical parameter differences before substitution.