1N5243C-TR

Single Zener Diodes Overview

The Vishay 1N5243C-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial package. It provides an 18 V nominal Zener voltage with a ±2% tolerance, tested at 7 mA. The device dissipates up to 500 mW and operates within a junction temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum reverse leakage current of 0.1 µA at 14 V, a typical dynamic resistance of 21 Ω at 7 mA, and a positive temperature coefficient of 0.085 %/K.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Offers tight ±2% Zener voltage tolerance for precision applications
• Provides high thermal stability across extended operating temperatures

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering code suffix against official documentation to confirm packaging type and tolerance class. Ensure that the required Zener voltage and power dissipation ratings align with the target circuit design parameters before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a precise 18 V reference is required with tighter than standard tolerance specifications. The DO-35 through-hole package facilitates easy integration into legacy designs or manual assembly processes requiring robust mechanical mounting.

Single Zener Diodes Part Context

This part belongs to the Vishay 1N5221 to 1N5267 series of small signal Zener diodes. The 'C' suffix specifically denotes the ±2% tolerance variant, distinguishing it from the standard ±5% 'B' suffix devices within the same product family.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering 18 V Zener diodes in the DO-35 package. Verify that replacement parts meet the identical 500 mW power rating and ±2% tolerance requirements to ensure functional compatibility.

Single Zener Diodes FAQ

What is the test current for the 1N5243C?

The Zener voltage is specified at a test current of 7 mA.

Does the 1N5243C have a negative temperature coefficient?

No, the 1N5243C has a positive temperature coefficient of 0.085 %/K.