JAN1N4471D

Single Zener Diodes Overview

The JAN1N4471D is a military-qualified Zener voltage regulator diode manufactured by Microchip Technology. It features a nominal Zener voltage of 18 V with a tight tolerance of ±1%. The device operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5 W at a lead temperature of +112°C. Electrical characteristics include a maximum dynamic impedance of 650 Ohms, a reverse leakage current of 50 µA at 14.4 V, and a maximum continuous current of 79 mA. It utilizes a DO-41 axial through-hole package.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability
• Qualified per MIL-PRF-19500/406 standards for critical applications
• Triple-layer passivation provides robust protection against environmental factors
• Inherently radiation hard as described in Microsemi MicroNote 050

Single Zener Diodes Applications

• High-reliability aerospace systems where failure cannot be tolerated
• Military-grade voltage regulation circuits
• Radiation-hardened electronic environments

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' confirms the 1% tolerance level required for your design. Confirm that the RoHS status aligns with project compliance requirements, as this military grade may differ from commercial specifications. Ensure the procurement channel supports the distribution of MIL-PRF-19500/406 qualified components.

Single Zener Diodes Selection Notes

Select this component when strict voltage accuracy is necessary alongside extreme temperature resilience. The 1% tolerance distinguishes it from standard 5% variants. Consider the thermal resistance and power derating curves if operating near the maximum dissipation limits. Verify compatibility with existing axial lead mounting constraints.

Single Zener Diodes Part Context

This part belongs to the 1N4460–1N4496 series of 1.5 Watt glass Zener diodes. It represents the industry-standard JEDEC numbering system adapted for military qualification levels including JAN, JANTX, JANTXV, and JANS. The series offers extensive voltage selections from 3.3 to 200 volts.

Single Zener Diodes Replacement Considerations

JAN1N4471 (5% tolerance), JANTX1N4471D (1% tolerance).

Single Zener Diodes FAQ

What does the 'D' suffix indicate in the JAN1N4471D part number?

The 'D' suffix indicates a tighter voltage tolerance of ±1%, compared to the standard ±5% tolerance found in parts without a suffix.

Is the JAN1N4471D resistant to electrostatic discharge?

Yes, the device is non-sensitive to ESD per MIL-STD-750 method 1020.