1N5948BG

Single Zener Diodes Overview

The Microsemi Corporation 1N5948BG is a high-reliability, glass-encapsulated Zener diode with a nominal voltage of 91V and a 5% tolerance. It operates in the DO-41 (DO-204AL) axial-leaded package and provides a rated average power dissipation of 1.5W. The device features hermetic sealing for enhanced environmental protection and includes metallurgically bonded tungsten slugs to improve thermal performance and structural integrity.

Single Zener Diodes Feature Summary

• Hermetically sealed glass body construction with tungsten heat slug
• Metallurgically enhanced internal contact design for lower thermal resistance
• Inherently radiation hard per Microsemi MicroNote 050
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High reliability aerospace and military electronic circuits
• Power supply protection against voltage spikes

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as it determines RoHS compliance and screening levels. Confirm that the required MIL-PRF-19500 screening level matches the available MQ, MX, MV, or MSP options. Ensure the lead length requirements align with the specified thermal resistance ratings during integration.

Single Zener Diodes Selection Notes

Select this component for applications requiring robust voltage regulation in harsh environments. The glass encapsulation offers superior temperature stability compared to plastic alternatives. Consider the 1.5W power rating and thermal resistance values when designing the heat dissipation strategy for the target circuit layout.

Single Zener Diodes Part Context

This part belongs to the 1N5913BG through 1N5956BG series of 1.5-watt Zener diodes manufactured by Microsemi. The series covers a wide voltage range from 3.3V to 200V with various tolerance options. The 'G' suffix specifically denotes the glass-cased version designed for high-reliability applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5948BPE3/TR8 and other variants within the 1N5948BJEDEC registered series. Verify that replacement components maintain the same hermetic sealing and radiation hardness specifications if used in qualified systems.