1N4109D-1

Single Zener Diodes Overview

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

Single Zener Diodes Feature Summary

• Hermetically sealed construction using an internal metallurgical bond within a glass DO-35 package.
• Low noise density characteristics suitable for precision regulation applications.
• Qualified per MIL-PRF-19500/435 standards for high reliability environments.

Single Zener Diodes Applications

• Voltage regulation in military and aerospace circuits
• Precision reference voltage generation
• High-reliability power supply protection

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' confirms the 1% voltage tolerance requirement. Confirm that the procurement order specifies the standard non-RoHS compliant version unless explicitly stated otherwise. Ensure the supplier provides documentation verifying compliance with MIL-PRF-19500/435 qualification levels appropriate for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a 15 V reference requires strict tolerance limits compared to standard 5% variants. Consider the low leakage current and noise specifications for sensitive analog front ends. Verify that the axial lead form factor fits the mechanical constraints of the target PCB layout or chassis mounting requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mW Zener diodes manufactured by Microchip Technology. The series offers various voltage options in both commercial and Mil-qualified versions, utilizing a consistent DO-35 glass package design for standardized integration across different voltage regulation needs.

Single Zener Diodes Replacement Considerations

JAN1N4109-1

Single Zener Diodes FAQ

What does the 'D' suffix indicate in the part number?

The 'D' suffix indicates a voltage tolerance of ±1%, which is tighter than the standard ±5% tolerance found on parts without a suffix.

Is the 1N4109D-1 RoHS compliant?

Standard versions of this part are not RoHS compliant. RoHS compliant versions are available only on commercial grade devices and typically require a specific suffix such as 'e3'.