1N4617-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4617-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 package. It provides a nominal Zener voltage of 2.4 V at a test current of 250 µA, with a maximum dynamic impedance of 1400 Ohms and a maximum reverse leakage current of 1.0 µA. The device features a noise density of 1.0 µV/√Hz and a temperature coefficient of -0.075 %/°C. Qualified per MIL-PRF-19500/435 for JAN, JANTX, JANTXV, and JANS levels, it operates within a junction and storage temperature range of -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Qualified to military standards including JANS level
• Low noise density performance suitable for precision regulation
• Hermetically sealed glass DO-35 axial-lead package

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Radiation-hardened electronic systems
• Precision reference voltage generation
• Military and aerospace power supplies

Single Zener Diodes Procurement Notes

Verify the specific reliability grade (JAN, JANTX, JANTXV, or JANS) required for your application, as this determines qualification level. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from mil-qualified parts. Ensure the TR suffix indicates tape and reel packaging per EIA-296 standards. Check for any recent product change notifications regarding material or process updates.

Single Zener Diodes Selection Notes

Select based on the required Zener voltage tolerance and operating temperature range. The 1N4617-1 offers a standard 5% tolerance; tighter tolerances require specific ordering suffixes. Consider the thermal resistance and derating curves for power dissipation management. Verify lead length requirements against PCB layout constraints. Ensure the package style matches the assembly method, as surface mount variants exist under different part numbers.

Single Zener Diodes Part Context

This component belongs to the 1N4614-1 through 1N4627-1 series of 500 mZener diodes. These devices are designed for applications requiring robust voltage regulation in harsh environments. The series covers voltages from 1.8 V to 100 V with various tolerance options. They are widely used in industries demanding high reliability and radiation hardness.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 2.4 V Zener voltage, 500 mW power rating, and DO-35 package. Verify equivalent MIL-PRF-19500/435 qualification levels. Cross-reference electrical parameters such as impedance and leakage current to ensure circuit compatibility.