JAN1N4475

Single Zener Diodes Overview

The Microchip Technology JAN1N4475 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a voidless hermetically sealed glass package with an internal metallurgical bond, ensuring robust construction and radiation hardness. The device provides a nominal Zener voltage of 27 V with a standard tolerance of ±5%. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5 W of steady-state power at a lead temperature of +112°C. Qualified per MIL-PRF-19500/406, it offers flexible axial-lead mounting terminals.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass package with internal metallurgical bond
• Military qualification per MIL-PRF-19500/406
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Radiation-hardened electronic systems
• Instrumentation requiring stable reference voltages

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against the datasheet nomenclature to ensure correct tolerance and compliance levels. Confirm that the procurement specification aligns with the military qualification standards defined in MIL-PRF-19500/406. Ensure environmental handling procedures are compatible with the glass package construction.

Single Zener Diodes Selection Notes

Select this component when a 27 V Zener reference is required in harsh environments. The choice depends on the need for hermetic sealing and radiation hardness. Consider the thermal resistance and power derating curves if operating near maximum ratings. Verify that the axial lead configuration fits the mechanical constraints of the assembly.

Single Zener Diodes Part Context

This part belongs to the 1N4460–1N4496 series of 1.5-watt Zener diodes. The series covers a wide voltage range from 3.3 V to 200 V. It is available in various military reliability levels including JAN, JANTX, JANTXV, and JANS. The series is recognized for its robust construction and consistent performance across broad temperature ranges.

Single Zener Diodes Replacement Considerations

Equivalent parts include other military-grade 27 V Zener diodes qualified to MIL-PRF-19500/406. Verify package dimensions and terminal compatibility before substitution. Ensure the replacement meets the same radiation hardness and hermetic sealing requirements.