1N4482US

Single Zener Diodes Overview

The Microchip Technology 1N4482US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 51.0 V and a maximum power dissipation of 1.5 W at 25°C ambient temperature. It features a standard 5% tolerance, a test current (IZT) of 5.0 mA, and a maximum dynamic impedance (ZZT) of 60 Ohms. The device operates within a junction and storage temperature range of -65°C to +175°C, includes a maximum reverse leakage current of 0.05 µA at 40.8 V, and utilizes an A (D-5A) MELF package.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability
• Qualified per MIL-PRF-19500/406 for military applications including JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard and non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability voltage regulation where failure cannot be tolerated
• Military and aerospace electronic systems
• Broad operating current and temperature range stabilization

Single Zener Diodes Procurement Notes

Verify the specific qualification level required for your application, as the base part number corresponds to commercial grade while JAN, JANTX, JANTXV, and JANS variants exist. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are available on commercial grade 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 51 V reference is needed in a surface mount form factor. Consider the 1.5 W steady-state power dissipation limit and the -65°C to +175°C operating range for thermal design. Verify that the 60 Ohm dynamic impedance meets circuit requirements. Check for tighter tolerance options using C or D suffixes if precision exceeds the standard 5% specification.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of industry-recognized 1.5 Watt Zener voltage regulators. These components serve as surface mount equivalents to popular JEDEC registered axial-lead series, offering robust construction suitable for demanding environments. The series provides extensive voltage selections from 3.3 to 200 Volts.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4482US, JANTX1N4482US, JANTXV1N4482US, and JANS1N4482US for higher reliability grades. Commercial RoHS-compliant versions may use the e3 suffix.