JAN1N971D-1

Single Zener Diodes Overview

The JAN1N971D-1 is a silicon Zener diode rated at 27 V nominal voltage with ±1% tolerance. It operates in a hermetically sealed axial-lead glass DO-35 (DO-204AH) package and dissipates up to 500 mW steady-state power. Qualified per MIL-PRF-19500/117, it supports an operating temperature range of -65°C to +175°C. The device features a maximum reverse leakage current of 21 µA at 24 V and a dynamic impedance of 41 Ohms.

Single Zener Diodes Feature Summary

• Hermetically sealed internal metallurgical bond for environmental stability
• Inherently radiation hard design suitable for harsh environments
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in military-grade electronic circuits
• Overvoltage protection in aerospace systems

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' confirms the ±1% tolerance requirement. Confirm that the JAN qualification level meets the intended reliability standards. Ensure the non-RoHS compliant status aligns with project specifications. Validate the DO-35 package dimensions against PCB layout constraints.

Single Zener Diodes Selection Notes

Select this component when tight voltage accuracy is required compared to standard 5% or 2% variants. Consider the low dynamic impedance for stable regulation under varying load conditions. Evaluate the high thermal resistance requirements for proper heat dissipation in enclosed assemblies.

Single Zener Diodes Part Context

This part belongs to the 1N957B-1 through 1N992B-1 series of 0.5 W Zener regulators manufactured by Microchip Technology. The series provides a wide selection from 6.8 V to 200 V. Military qualified versions are available for part numbers within the 1N962B-1 through 1N992B-1 range.

Single Zener Diodes Replacement Considerations

JAN1N971C-1 offers equivalent electrical characteristics with ±2% tolerance. JAN1N971B-1 provides the same performance with standard ±5% tolerance.