CMHD457A TR

Single Diodes Overview

The CMHD457A is a surface mount low leakage silicon diode manufactured by Central Semiconductor Corp. It utilizes a silicon planar construction and is epoxy molded in an SOD-123 package. The device features a peak repetitive reverse voltage of 70 V and a peak working reverse voltage of 60 V. Electrical characteristics include a maximum reverse current of 25 nA at rated voltage and 25°C, with a breakdown voltage of 70 V tested at 100 µA. Forward voltage is specified at 1.0 V maximum when conducting 100 mA. The component supports an average forward current of 200 mA and continuous forward current of 500 mA, with power dissipation rated at 400 mW.

Single Diodes Feature Summary

• Designed for applications requiring minimal reverse leakage current
• Utilizes silicon planar technology for reliable performance
• Epoxy molded in a compact SOD-123 surface mount package

Single Diodes Applications

• Low leakage rectification circuits
• General purpose switching applications
• High impedance input stages

Single Diodes Procurement Notes

Verify the specific ordering suffix required for your manufacturing process. The datasheet indicates that adding 'TIN/LEAD' requests Tin/Lead plating, while 'PBFREE' specifies Lead-free plating. Confirm these markings align with your assembly specifications before placing orders to ensure correct material compliance and solderability requirements are met.

Single Diodes Selection Notes

Select this component when low reverse leakage is critical to circuit operation. The 70 V rating provides adequate margin for low-voltage signal paths. Consider the SOD-123 footprint for space-constrained designs. Evaluate thermal resistance of 312.5 °C/W against your board's heat dissipation capabilities to ensure junction temperatures remain within the -65 to +150 °C operating range during continuous forward current usage.

Single Diodes Part Context

This part belongs to the CMHD series of surface mount diodes from Central Semiconductor Corp. It shares the SOD-123 package and low leakage design philosophy with the CMHD459A, which offers higher voltage ratings. The series is intended for general-purpose discrete semiconductor applications where small form factor and low parasitic effects are prioritized over high power handling.

Single Diodes Replacement Considerations

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