CDLL4109

Single Zener Diodes Overview

The CDLL4109 is a single silicon Zener diode in a hermetically sealed DO-213AA leadless glass MELF package. It provides a nominal Zener voltage of 15 V at a test current of 250 µA, with a maximum Zener impedance of 100 Ohms and a reverse leakage current of 50 nA. The device supports a DC power dissipation of 500 mW at +125°C, derating by 10 mW/°C above this temperature. It operates within a junction and storage temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass case construction for environmental protection
• Metallurgically bonded design for structural integrity
• Leadless surface mount package configuration

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., C or D) against requirements, as it dictates the Zener voltage tolerance. Confirm RoHS compliance status if restricted materials are prohibited. Ensure mounting surfaces match the device's axial coefficient of expansion to prevent mechanical stress during thermal cycling.

Single Zener Diodes Selection Notes

Select based on required Zener voltage accuracy and operating environment. Higher tolerance variants require specific ordering suffixes. Verify that the application current remains near the 250 µA test point for optimal impedance characteristics. Ensure the PCB material accommodates the device's thermal expansion properties.

Single Zener Diodes Part Context

This component belongs to the CDLL4099 through CDLL4135 series of low-current Zener diodes manufactured per MIL-PRF-19500/435 specifications. The series utilizes a consistent DO-213AA package form factor while offering various voltage ratings from 6.8 V to 100 V.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN, JANTX, JANTXV, and JANS versions of the 1N4099UR-1. These military-grade alternatives share identical electrical parameters and physical dimensions but may differ in qualification standards.