1N4496US

Single Zener Diodes Overview

The Microchip Technology 1N4496US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 200 V and a test current of 1.2 mA. It features a 1.5 W steady-state power dissipation rating at 25°C ambient temperature, housed in a D-5A MELF package. The device exhibits a maximum dynamic impedance of 1500 Ohms and a maximum reverse leakage current of 0.25 µA at the rated voltage. Operating temperatures range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction using internal metallurgical bonds for robust reliability.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020.

Single Zener Diodes Applications

• High-reliability applications where circuit failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened electronic systems.

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number denotes commercial grade while military grades require specific prefixes such as JAN or JANTX. Confirm RoHS compliance status, noting that compliant versions are restricted to commercial grades only. Ensure the ordering suffix matches the desired tolerance and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a high-voltage Zener regulator is needed in a compact surface mount form factor. The 1N4496US provides a 200 V breakdown suitable for high-side regulation tasks. Consider the high dynamic impedance of 1500 Ohms when designing for tight voltage stability requirements under varying load conditions.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These components serve as surface mount equivalents to popular JEDEC registered axial-lead series, offering a direct footprint replacement for legacy through-hole designs while maintaining hermetic sealing capabilities.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N4496 equivalent parts. Verify that substitute components meet the same MIL-PRF-19500/406 qualification standards if military reliability is required. Ensure the replacement package matches the D-5A MELF dimensions for proper board compatibility.