JANS1N4120D-1/TR

Single Zener Diodes Overview

The JANS1N4120D-1/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tight tolerance of ±1%. The component operates in the through-hole DO-204AH (DO-35) axial package and dissipates up to 500 mW. It is qualified under MIL-PRF-19500/435 for military standards. The device supports a wide operating temperature range from -65°C to +175°C junction temperature. Key electrical parameters include a test current of 250 µA, a maximum reverse leakage current of 10 nA at 45.6 V, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Military-grade qualification compliant with MIL-PRF-19500/435 standards
• High precision voltage regulation with ±1% Zener voltage tolerance
• Extended thermal stability suitable for extreme environments (-65°C to +175°C)
• Low leakage current characteristics for sensitive circuit protection

Single Zener Diodes Applications

• Precision voltage reference circuits in military avionics
• Over-voltage protection in harsh environment electronic systems
• Voltage regulation in aerospace instrumentation
• Clamping applications in high-reliability communication equipment

Single Zener Diodes Procurement Notes

Verify that the ordering suffix /TR indicates tape and reel packaging, distinct from tray configurations. Confirm MIL-PRF-19500/435 compliance documentation is included. Ensure the part number matches the specific 30V variant. Check for RoHS status as non-compliant variants may exist within the family. Validate manufacturer lot traceability for military procurement requirements.

Single Zener Diodes Selection Notes

Select this component when precise 30V regulation is required in space-constrained axial packages. Consider the ±1% tolerance for high-accuracy analog circuits. Evaluate the 500 mW power dissipation against thermal management capabilities. Compare leakage specifications against other Zener diodes for low-power standby modes. Ensure the through-hole mounting style aligns with the PCB design constraints.

Single Zener Diodes Part Context

This part belongs to the JANS series of Zener diodes from Microchip Technology, specifically engineered for defense and aerospace markets. The JANS designation signifies enhanced screening and reliability testing beyond standard commercial grades. It shares the DO-35 form factor with general-purpose diodes but offers superior voltage stability and temperature coefficient performance defined by military specifications.

Single Zener Diodes Replacement Considerations

Direct substitutes must match the 30V Zener voltage, ±1% tolerance, and DO-35 package. Verify equivalent MIL-PRF-19500/435 qualification if military compliance is mandatory. Cross-reference leakage current and impedance values to ensure circuit compatibility. Alternative parts from other manufacturers require validation of thermal and electrical limits.