1N5243B

Single Zener Diodes Overview

The Microchip Technology 1N5243B is a 0.5 W glass axial-lead Zener diode housed in the DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 13 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 9.5 µA at 9.9 V. Electrical characteristics include a test current of 9.0 mA, a maximum Zener impedance of 0.5 Ω at 0.25 mA, and a forward voltage of 1.5 V at 200 mA.

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
• Overvoltage protection
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify that the component matches the specific JEDEC registered type number and suffix requirements. Confirm compliance with RoHS standards if applicable, as indicated by the e3 suffix on equivalent variants. Ensure the ordering documentation specifies the correct screening level and packaging format required for the intended assembly process.

Single Zener Diodes Selection Notes

Select this component when a precise 13 V regulation point is required with tight tolerance limits. Consider the thermal resistance and power derating curves for high-temperature environments. Evaluate the low capacitance characteristics if signal integrity is critical in the application circuit design.

Single Zener Diodes Part Context

This part belongs to the popular 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers an extensive selection from 2.4 to 200 volts in standard tolerances. These devices are widely used in industrial and commercial electronics requiring reliable voltage clamping or referencing.

Single Zener Diodes Replacement Considerations

Equivalent parts within the 1N5221–1N5281B series share the same package and power ratings. Verify that any substitute maintains the identical 13 V nominal voltage and ±5% tolerance specification to ensure circuit compatibility.