1N5243B-G

Single Zener Diodes Overview

The Comchip Technology 1N5243B-G is an axial-leaded glass Zener diode with a nominal voltage of 13 V and a power dissipation rating of 500 mW. It features a ±5% tolerance, a maximum dynamic impedance of 13 Ω at a test current of 9.5 mA, and a maximum reverse leakage current of 0.1 μA. The device operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in a compact DO-35 glass axial package
• Features polarity indication via a cathode band for correct circuit orientation
• Designed for high thermal stability across a wide operating temperature range

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation when sourcing, as the 1N5243B part number is widely produced by multiple semiconductor vendors including Microchip and Comchip. Confirm that the required RoHS compliance status matches your project specifications, as availability varies between compliant and non-compliant manufacturing lines.

Single Zener Diodes Selection Notes

Select this component for through-hole designs requiring a standard 13 V reference point. Ensure the circuit design accommodates the specified 500 mW power dissipation limit and accounts for the thermal resistance characteristics relative to lead length during operation.

Single Zener Diodes Part Context

This component belongs to the 1N5221B-G through 1N5267B-G series of 0.5 W Zener Voltage Regulators. The series offers a broad selection of voltages from 2.4 V to 75 V in standard 5% or 10% tolerances, utilizing the established DO-35 glass axial-lead form factor.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5243B parts. Verify that substitute components match the 13 V nominal voltage, 500 mW power rating, and DO-35 package dimensions to ensure mechanical and electrical compatibility.