1N4109D

Single Zener Diodes Overview

The Microchip Technology 1N4109D is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 15 V with a tight 1% tolerance. The device operates at a test current of 250 µA, featuring a maximum dynamic impedance of 100 Ohms and a reverse leakage current of 50 nA. It supports an operating temperature range from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond for enhanced reliability
• Hermetically sealed glass DO-35 package
• Low noise density characteristics
• Qualified per MIL-PRF-19500/435 standards

Single Zener Diodes Applications

• High-reliability voltage regulation
• Military and aerospace circuits
• Precision reference applications

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' indicates the 1% voltage tolerance variant when ordering. Confirm RoHS compliance status as it varies by commercial or military qualification level. Ensure the required reliability grade (JAN, JANTX, JANTXV, or JANS) matches the application requirements before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring low noise and high stability over wide temperature ranges. The 1% tolerance ensures precise voltage regulation compared to standard 5% variants. Consider the DO-35 package constraints for through-hole mounting designs requiring hermetic sealing.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes. These devices are designed for demanding environments where radiation hardness and long-term stability are critical. The series offers extensive voltage selection from 1.8 V to 100 V across various tolerance grades.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4109D-1, JANTX1N4109D-1, and JANTXV1N4109D-1. Verify that substitute parts maintain the same 1% tolerance and metallurgical bond construction to ensure performance parity.