1N4482

Single Zener Diodes Overview

The Microchip Technology 1N4482 is a military-qualified Zener voltage regulator featuring a hermetically sealed void-less glass package. It provides a nominal Zener voltage of 51 V with a maximum dynamic impedance of 60 Ohms at the test current of 5.0 mA. The device supports a maximum continuous current of 28 mA and withstands surge currents up to 0.28 A under specified conditions. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5 W of steady-state power.

Single Zener Diodes Feature Summary

• Hermetically sealed construction using void-less hard glass with tungsten slugs for robust performance in high-reliability environments.
• Qualified per MIL-PRF-19500/406, offering JAN, JANTX, JANTXV, and JANS reliability levels suitable for applications where failure is not tolerated.
• Inherently radiation hard as described in Microsemi MicroNote 050, ensuring stability in radiation-exposed environments.

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Military and aerospace electronic systems
• Radiation-hardened circuit designs

Single Zener Diodes Procurement Notes

Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as these levels dictate the manufacturing lot traceability and testing standards. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military qualifications. Ensure the ordering suffix matches the desired tolerance and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select the 1N4482 when a precise 51 V reference is needed within a wide operating temperature range. Consider the 60 Ohm dynamic impedance for small-signal regulation requirements. Evaluate the 1.5 W power dissipation capability against thermal management constraints. Verify that the axial-lead DO-41 package fits the mechanical layout and mounting style of the target assembly.

Single Zener Diodes Part Context

This component belongs to the 1N4460–1N4496 series of industry-recognized Zener diodes. These devices are designed for demanding environments requiring high reliability and radiation hardness. The series offers a broad selection of voltages from 3.3 V to 200 V, all sharing similar hermetic construction and robust metallurgical bonding characteristics.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: JANS1N4482D, 1N4757A.