1N4370A-1

Single Zener Diodes Overview

The Microchip Technology 1N4370A-1 is a silicon 500 mW Zener voltage regulator with a nominal voltage of 2.4 V and ±5% tolerance. It operates within a temperature range of -65°C to +175°C. Key electrical parameters include a maximum reverse current of 100 µA at 1.0 V, a dynamic impedance of 30 Ohms at 20 mA test current, and a maximum forward voltage of 1.1 V at 200 mA. The device features an internal metallurgical bond and is qualified per MIL-PRF-19500/127 for JAN, JANTX, and JANTXV levels.

Single Zener Diodes Feature Summary

• Hermetically sealed axial-lead glass DO-35 package with internal metallurgical bond
• Qualified to military reliability standards including JAN, JANTX, and JANTXV levels
• Inherently radiation hard as described in Microsemi MicroNote 050
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad temperature and current ranges
• Military and aerospace electronic circuits requiring high reliability
• Radiation-hardened system designs

Single Zener Diodes Procurement Notes

Verify the specific qualification level (JAN, JANTX, or JANTXV) required for your application when ordering. Confirm that the component meets all environmental and performance specifications outlined in the datasheet. Ensure proper handling procedures are followed due to the hermetic seal and glass package construction. Check for any specific testing requirements mandated by the target industry standards.

Single Zener Diodes Selection Notes

Select this component for applications requiring a stable 2.4 V reference with tight tolerance. Consider the operating temperature range and power dissipation limits when designing the thermal management strategy. Evaluate the dynamic impedance characteristics for signal integrity in sensitive analog circuits. Verify compatibility with existing PCB layouts and mounting constraints for the axial-lead package.

Single Zener Diodes Part Context

This part belongs to the 1N4370A series of 500 mW Zener diodes, which also includes variants like 1N4371A-1 and 1N4372A-1. These devices share similar packaging and qualification standards but differ in nominal Zener voltage and associated electrical characteristics. The series offers options from 2.4 V to 12 V with various tolerance grades.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4370A-1 units from authorized distributors. Cross-referencing with equivalent military-grade Zener diodes requires verifying matching voltage, tolerance, power rating, and package dimensions. Ensure any replacement maintains the same qualification level and radiation hardness if applicable.