1N4102

Single Zener Diodes Overview

The Microchip Technology 1N4102 is a 500 mW Zener diode with an 8.7 V nominal voltage and 5% tolerance, housed in a hermetically sealed axial-lead glass DO-35 package. It features an internal metallurgical bond and operates within a temperature range of -65 °C to +175 °C. The device exhibits a maximum reverse current of 6.7 µA at 8.2 V and a dynamic impedance of 0.5 Ω at a test current of 250 µA. Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS reliability levels, it provides stable voltage regulation across broad current and temperature variations.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced structural integrity
• Hermetically sealed glass DO-35 package ensuring environmental protection
• Qualified for high-reliability aerospace and defense applications under MIL-PRF-19500/435
• Inherently radiation hard design suitable for harsh operating environments

Single Zener Diodes Applications

• Voltage regulation in military-grade electronic systems
• Reference voltage sources in aerospace instrumentation
• High-reliability power supply circuits requiring radiation hardness
• Precision analog signal conditioning in extreme temperature environments

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as qualification levels differ. Confirm RoHS compliance status if applicable, noting that commercial versions may vary from mil-qualified parts. Ensure ordering suffixes match the desired tolerance and packaging format. Cross-reference datasheet T4-LDS-0245-2 for exact electrical limits and mechanical dimensions before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a robust, radiation-hardened Zener diode is needed for critical voltage regulation. The 8.7 V breakdown point suits mid-range reference applications. Consider the low dynamic impedance for stability under varying load conditions. Evaluate thermal derating requirements against the 500 mW rating at elevated ambient temperatures. Verify lead length constraints due to the axial-lead form factor.

Single Zener Diodes Part Context

This part belongs to the 1N4099 through 1N4135 series of 500 mW metallurgically bonded glass Zener diodes manufactured by Microchip Technology (formerly Microsemi). The series offers a wide voltage range from 1.8 V to 100 V with various tolerance options. These devices are specifically designed for high-reliability markets, including space, defense, and industrial sectors, where long-term stability and radiation tolerance are paramount.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 8.7 V Zener voltage, 500 mW power dissipation, and DO-35 package. Verify equivalent MIL-PRF-19500/435 qualification levels if radiation hardness is required. Check dynamic impedance and leakage current specifications to ensure circuit performance compatibility. Commercial equivalents lack the metallurgical bond and hermetic sealing.