JAN1N4486US

Single Zener Diodes Overview

The JAN1N4486US is a military-qualified, surface-mount Zener voltage regulator manufactured by Microchip Technology. It operates within the 1N4460US–1N4496US series and is qualified per MIL-PRF-19500/406. The device features a hermetically sealed void-less glass package with an internal metallurgical bond. Key electrical parameters include a nominal Zener voltage of 75 V, a maximum dynamic impedance of 130 Ohms at the test current (IZT), and a maximum reverse leakage current of 0.25 µA at VR. It supports a steady-state power dissipation of 1.5 W and operates across a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for high reliability.
• Military qualification per MIL-PRF-19500/406 in JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge (ESD).
• Triple-layer passivation provides robust protection against environmental stress.

Single Zener Diodes Applications

• High-reliability aerospace systems where failure is not tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened electronic circuits.

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level (JAN, JANTX, JANTXV, or JANS) and tolerance class. Confirm RoHS compliance status if applicable, as commercial versions differ from military grades. Ensure the procurement documentation explicitly references MIL-PRF-19500/406 qualification. Validate the part number against the manufacturer's official datasheet to confirm the correct Zener voltage and package type before finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a surface-mount solution is required for critical applications demanding radiation hardness and ESD immunity. The 1.5 W power rating and wide temperature range (-65°C to +175°C) support operation in harsh environments. Choose based on the specific Zener voltage needed within the 3.3 V to 200 V series range. Verify that the D-5A MELF package dimensions fit the available PCB space and soldering capabilities.

Single Zener Diodes Part Context

This device belongs to the 1N4460US–1N4496US series of surface-mount Zener diodes. These regulators are designed as industry-standard equivalents to popular JEDEC registered series but offer enhanced durability through void-less glass packaging. The series covers a wide voltage spectrum, providing engineers with standardized options for precision voltage reference and regulation tasks in demanding sectors.

Single Zener Diodes Replacement Considerations

Direct replacements must match the MIL-PRF-19500/406 qualification and D-5A MELF package. Equivalent parts should maintain the 75 V nominal voltage and 1.5 W power dissipation rating. Verify compatibility with existing thermal management designs due to the specific thermal resistance characteristics of the glass package.