1N3525A-1

Single Zener Diodes Overview

The Microchip Technology 1N3525A-1 is a hermetically sealed glass axial-leaded Zener voltage regulator diode housed in the DO-35 package. It provides a nominal Zener voltage of 20.0 volts with a 5% tolerance, measured at a test current of 5.0 mA. The device features a maximum Zener impedance of 20.0 ohms and a power rating of 400mW. It operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental protection
• Provides stable voltage regulation with tight tolerance
• Capable of operation across extended industrial temperature ranges

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Biasing networks

Single Zener Diodes Procurement Notes

Verify the specific suffix '-1' against official documentation to confirm if it denotes a distinct military or screening level variant compared to the standard 1N3525A. Confirm lead finish specifications and packaging requirements directly with the manufacturer prior to ordering.

Single Zener Diodes Selection Notes

Select this component when a precise 20V regulation point is required in a compact axial package. Ensure the circuit design accommodates the specified 400mW power dissipation limit and that the operating current remains near the 5.0 mA test condition for optimal accuracy.

Single Zener Diodes Part Context

This part belongs to the 1N3506A through 1N3534A series of 400mW Zener diodes manufactured by Microchip Technology (formerly Microsemi). The series utilizes a standard DO-35 glass case and offers a wide selection of voltage values from 3.3V to 47V with consistent 5% tolerance characteristics.

Single Zener Diodes Replacement Considerations

Standard equivalents include the generic 1N3525A. Verify pinout compatibility and thermal performance before substitution.

Single Zener Diodes FAQ

What is the maximum Zener impedance for the 1N3525A-1?

The maximum Zener impedance is 20.0 ohms, measured at the test current of 5.0 mA.

How is polarity indicated on the device?

Polarity is indicated by a cathode band printed on the glass case.