This document describes the features and characteristics of VOIDLESS-HERMETICALLY-SEALED 5 Watt Glass Zener Diodes manufactured by Microsemi Scottsdale Division. These diodes are hermetically sealed with voidless-glass construction and internal metallurgical bond, making them ideal for high-reliability applications.
The Microsemi 5 W voidless‑hermetically sealed glass Zener diode series is MIL‑PRF‑19500/356 qualified and designed for high‑reliability applications. The series includes Zener voltages from 3.3 V to 390 V with standard ±5 % tolerance and tighter ±2 % or ±1 % options.
Key specifications include an operating temperature range of –65 °C to +175 °C, a power dissipation of 5 W at 25 °C, and thermal resistance of 22 °C/W (junction‑to‑lead). The devices are available in axial‑lead and surface‑mount MELF packages and feature a voidless glass construction with internal metallurgical bonds.
| Forward Voltage | 1.50 V at 1.0 A |
|---|---|
| Zener Voltage Range | 3.3 V to 390 V |
| Voltage Tolerance (standard) | ±5 % |
| Voltage Tolerance (tight) | ±2 % or ±1 % (C/D suffix) |
The series provides Zener voltages from 3.3 V to 390 V.
Yes, tighter tolerances of ±2 % or ±1 % are available with C or D suffixes.