1N4990US/TR

$10.40

Description：DIODE ZENER 220V 5W E-MELF
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:06a707b1fccf Category: Single Zener Diodes Brand: Microchip Technology

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Product introduction

1N4990US/TR is listed in the Single Zener Diodes range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is DIODE ZENER 220V 5W E-MELF. Review the specifications below when checking this part for your BOM.

Single Zener Diodes specifications for 1N4990US/TR

Description：DIODE ZENER 220V 5W E-MELF
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR),Cut Tape (CT)
Voltage - Zener (Nom) (Vz)：220 V
Tolerance：±5%
Power - Max：5 W
Impedance (Max) (Zzt)：550 Ohms
Current - Reverse Leakage @ Vr：2 µA @ 167 V
Operating Temperature：-65°C ~ 175°C (TJ)
Mounting Type：Surface Mount
Package / Case：SQ-MELF, E
Voltage - Forward (Vf) (Max) @ If：1.5 V @ 1 A
Grade：-
Qualification：-

Single Zener Diodes datasheet and documents for 1N4990US/TR

1N4990US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4990US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 220 V at a test current of 5 mA. It features a maximum dynamic impedance of 550 Ohms and a reverse leakage current of 2 µA at 2000 V. The device supports a maximum continuous current of 21.6 mA and a surge current of 0.5 A. It operates within a junction temperature range of -65°C to +175°C, dissipating up to 5 Watts.

Single Zener Diodes Feature Summary

Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability
Triple-layer passivation and radiation hardening characteristics
ESD robustness compliant with MIL-STD-750 Method 1020

Single Zener Diodes Applications

Military and aerospace circuits requiring failure-intolerant components
High-reliability power supply regulation
Harsh environment electronic systems

Single Zener Diodes Procurement Notes

Verify the specific revision level and manufacturing origin against the latest official datasheet before procurement. Confirm that the ordering suffix matches the required tolerance and package specifications. Ensure compliance with relevant military standards such as MIL-PRF-19500/356 if applicable to the design requirements.

Single Zener Diodes Selection Notes

Select this component for applications demanding hermetic sealing and high thermal stability in a surface mount form factor. Consider the 5 Watt power dissipation capability and the specific 220 V breakdown voltage when designing voltage reference or protection circuits. Evaluate the package dimensions against available PCB real estate.

Single Zener Diodes Part Context

This part belongs to the 1N4954US through 1N4996US series of 5 Watt Zener diodes. These devices are designed for high-reliability environments and offer a wide selection of voltage ratings from 3.3 V to 390 V. The series is characterized by its voidless-glass construction and internal metallurgical bonding.