JAN1N4973C

Single Zener Diodes Overview

The JAN1N4973C is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 43 V with a tight tolerance of ±2%. The device is rated for a power dissipation of 5 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 2 µA at 32.7 V and a Zener impedance of 20 Ohms. It utilizes the E-Package-2 axial through-hole configuration.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the 43 V Zener voltage.
• Engineered for high-reliability environments with an operating temperature range extending to +175°C.
• Features low reverse leakage current of 2 µA to minimize standby power loss.

Single Zener Diodes Applications

• Military aerospace voltage reference circuits
• High-temperature industrial power supply regulation
• Ruggedized electronic protection systems

Single Zener Diodes Procurement Notes

Verify that the specific JAN1N4973C part number matches the required ±2% tolerance specification, as standard commercial variants may differ. Confirm RoHS status and packaging details directly with the manufacturer or authorized distributor, as military-grade components often have distinct ordering suffixes and documentation requirements compared to general-purpose equivalents.

Single Zener Diodes Selection Notes

Select this component when strict voltage accuracy and wide thermal stability are critical. The 5 W power rating supports moderate current loads in axial packages. Ensure the circuit design accounts for the specific Zener impedance and test current conditions defined in the official datasheet to maintain regulation performance under varying load conditions.

Single Zener Diodes Part Context

This component belongs to the JAN series of single Zener diodes produced by Microchip Technology. The JAN prefix typically denotes parts meeting specific military or high-reliability standards. It shares the core electrical profile of the 1N4973 series but offers tighter voltage tolerance specifications suitable for precision applications requiring stable reference voltages over extreme environmental conditions.

Single Zener Diodes Replacement Considerations

Direct substitutes include JAN1N4973 (±5% tolerance) if wider voltage variation is acceptable. For surface-mount needs, consider JANTX1N4973DUS. Verify pinout compatibility and thermal management requirements before swapping between axial and SMT packages.