1N5257A

Single Zener Diodes Overview

The Microchip Technology 1N5257A is a single Zener diode housed in a DO-35 axial leaded glass package. It provides a nominal Zener voltage of 33 V with a tolerance of ±10%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. Key electrical parameters include a maximum reverse leakage current of 100 nA at 24 V, a Zener impedance of 58 Ohms measured at a test current of 3.8 mA, and a positive voltage temperature coefficient of +0.092 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Constructed with a hermetically sealed glass body for environmental protection

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify the specific suffix 'A' corresponds to the required ±10% tolerance during procurement. Confirm that the component meets RoHS compliance requirements if applicable to your assembly process. Ensure the ordering documentation explicitly references the Microchip Technology part number to avoid substitution errors with generic equivalents.

Single Zener Diodes Selection Notes

Select this component when a 33 V breakdown voltage with moderate precision is required. The DO-35 package suits applications needing standard through-hole mounting. Consider the positive temperature coefficient for thermal stability analysis. Verify that the 500 mW power rating aligns with the expected load conditions and ambient temperatures.

Single Zener Diodes Part Context

This component belongs to the widely used 1N5221 through 1N5281B series of 0.5 W Zener voltage regulators. The series offers an extensive selection of voltages from 2.4 V to 200 V. The 'A' suffix specifically denotes a standard 10% voltage tolerance, distinguishing it from tighter tolerance variants like the 'B' or 'C' suffixes.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 33 V Zener voltage, 500 mW power rating, and DO-35 package. Verify that substitute components exhibit similar Zener impedance and leakage current characteristics to ensure circuit performance parity.