1N5346B

Overview

The Microsemi Corporation 1N5346B is a silicon planar power Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 9.1 V with a standard tolerance of ±5%. The device features a maximum power dissipation of 5.0 watts and operates within a temperature range of -65°C to +150°C. It utilizes an axial-lead T-18 plastic encapsulated package.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for versatile installation
• Moisture classification is Level 1, requiring no dry pack storage

Applications

• Stabilizing circuits with high power rating requirements
• Clipping circuits utilizing high power ratings
• Voltage regulation applications requiring wide selection of voltages

Procurement Notes

Verify component authenticity by checking for the specific part number marking on the device body. Confirm that the suffix 'B' corresponds to the required ±5% voltage tolerance. Ensure the procurement source adheres to handling guidelines for plastic encapsulated semiconductors despite the Level 1 moisture classification.

Selection Notes

Select this component when a 5-watt axial-leaded Zener diode is required for high-power stabilization or clipping tasks. The 9.1 V nominal voltage and ±5% tolerance suit precision regulation needs. Consider thermal resistance specifications and adequate heat sinking to support high maximum DC currents during operation.

Part Context

This device belongs to the 1N5333 through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 200 volts. Different tolerances are identified by specific suffix letters, with the 'B' suffix designating the standard ±5% tolerance.

Replacement Considerations

RoHS compliant equivalents are available by adding the 'e3' suffix to the part number (1N5346Be3). Surface mount equivalents can be found in the SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B series.