1N4701

Overview

The Microchip Technology 1N4701 is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. It utilizes a DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 25°C and a test current of 0.5 mA or 1.0 mA depending on the specific datasheet revision.

Feature Summary

• Provides stable voltage reference in low-current ranges
• Utilizes metallurgically bonded double plug construction
• Offers temperature compensated performance

Applications

• Voltage regulation circuits
• Temperature compensated zener references
• Low current range protection

Procurement Notes

Verify the specific suffix (e.g., A, RA, UR) against the design requirements, as these indicate variations in packaging, tolerance, or manufacturing lot. Confirm RoHS compliance status, as some variants may not be compliant. Ensure the required operating temperature range aligns with the component's specified limits. Cross-reference the manufacturer part number with official Microchip documentation to confirm availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when a precise 5.1 V reference is needed in a through-hole configuration. Consider the 500 mW power rating and ensure adequate heat dissipation. Evaluate the ±5% tolerance against circuit precision requirements. Compare alternative packages if surface mount space is limited. Verify that the operating environment stays within the specified thermal boundaries.

Part Context

This component belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. These devices are widely used for basic voltage regulation and reference applications. The series offers various voltage options within a standard axial glass package format, providing a reliable solution for general-purpose electronic designs requiring stable DC voltage levels.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4701 equivalents such as those from ON Semiconductor or Vishay, provided they meet the 5.1 V Zener voltage, 500 mW power rating, and DO-35 package constraints. Verify pinout compatibility and thermal characteristics before substitution.