1N5346A/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5346A/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by the Scottsdale Division. It provides voltage regulation at a nominal Zener voltage of 9.1 V with a ±10% tolerance. The device operates within a temperature range of -65°C to +150°C and features an axial lead T-18 package. Electrical characteristics include a maximum dynamic impedance of 2.0 ohms and a maximum reverse current of 7.5 µA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Moisture classification Level 1 requiring no dry pack storage

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage generation for analog systems
• Overvoltage protection for sensitive electronic components

Single Zener Diodes Procurement Notes

Verify the component origin as the datasheet originates from Microsemi, which was acquired by Microchip Technology. Confirm that the specific ordering suffix matches the required tape and reel packaging configuration. Ensure compliance with any applicable military screening requirements if the standard commercial grade does not meet project specifications.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V regulation point is required with moderate precision. The 5-watt power dissipation rating allows for operation at high DC currents provided adequate heat sinking is implemented. Consider the thermal resistance values to determine appropriate PCB copper pad dimensions for maintaining safe junction temperatures.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series covers a wide voltage selection from 3.3 V to 200 V. Different tolerance levels are identified by suffix letters, with 'A' denoting ±10%. The series is designed for applications requiring robust performance under high surge conditions.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5346B (±5% tolerance) or 1N5346C (±2% tolerance). Surface mount equivalents such as SMBJ5346A or SMBG5346A are available for designs requiring different form factors.