JAN1N5539D-1

Single Zener Diodes Overview

The JAN1N5539D-1 is a low voltage avalanche Zener diode manufactured by Microchip Technology. It operates within the 1N5518 through 1N5546 series and provides a nominal Zener voltage of 19 V at a test current of 1 mA. The device features a maximum Zener impedance of 100 Ohms and a maximum reverse leakage current of 16 µA. Qualified per MIL-PRF-19500/437, it utilizes a hermetically sealed DO-35 (DO-204AH) axial-lead glass package with an internal metallurgical bond. It supports a steady-state power dissipation of 0.5 W across a junction temperature range of -65 to +175 °C.

Single Zener Diodes Feature Summary

• Hermetically sealed construction utilizing an internal metallurgical bond for enhanced reliability in harsh environments.
• Qualified to MIL-PRF-19500/437 standards under JANTXV military specifications.
• Inherently radiation hard design suitable for demanding aerospace applications.
• Minimal capacitance characteristics ensuring low noise performance.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage generation in precision electronic circuits
• Protection against electrostatic discharge (ESD)
• Radiation-hardened systems and aerospace electronics

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the required suffixes for the intended qualification level and tolerance. Confirm the presence of the metallurgical bond option if required for the application environment. Ensure compliance with relevant environmental directives such as RoHS status, noting that non-compliant versions are standard for this military grade. Cross-reference datasheet electrical limits against system requirements before procurement.

Single Zener Diodes Selection Notes

Select the JAN1N5539D-1 when a precise 19 V reference with tight 1% tolerance is required in a ruggedized environment. The D suffix indicates a tighter voltage tolerance compared to standard commercial variants. Consider the DO-35 package dimensions for board layout constraints. Evaluate thermal derating curves if operating near maximum power ratings or elevated temperatures.

Single Zener Diodes Part Context

This component belongs to the 1N5518B through 1N5546B-1 series of 0.5 watt axial-leaded glass Zener Voltage Regulators. The series offers a selection from 3.3 to 33 volts with various tolerance options. The JAN1N5539D-1 specifically represents the 19 V variant within this lineup, designed for high-reliability applications requiring strict military qualification standards.

Single Zener Diodes Replacement Considerations

JAN1N5539D-1/TR

Single Zener Diodes FAQ

What does the '-1' suffix indicate in the JAN1N5539D-1 part number?

The '-1' suffix denotes that the device features an internal metallurgical bond, which is required for JAN, JANTX, and JANTXV military qualifications.

Is the JAN1N5539D-1 sensitive to electrostatic discharge?

No, the device is nonsensitive to ESD per MIL-STD-750 Method 1020.