1N5346B/TR8

Overview

The Microchip Technology 1N5346B/TR8 is a silicon Zener diode with a nominal voltage of 9.1 V and a ±5% tolerance. It features a 5 W power dissipation rating at 25°C, operating within a temperature range of -65°C to +150°C. The device utilizes a T-18 axial lead package and includes a TR suffix indicating tape and reel packaging.

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

Applications

• Voltage regulation in electronic circuits
• Power supply protection against overvoltage conditions
• Reference voltage generation in measurement systems

Procurement Notes

Verify the component origin as the datasheet originates from Microsemi, now part of Microchip Technology. Confirm that the specific ordering suffix matches the required tape and reel configuration. Ensure compliance with environmental standards by checking for RoHS designation if applicable to the manufacturing lot.

Selection Notes

Select this component when a 9.1 V reference with 5 W capability is required. Consider the thermal resistance characteristics for heat sinking requirements. Evaluate the maximum regulator current limits relative to the expected load variations to ensure reliable operation under steady-state conditions.

Part Context

This component belongs to the JEDEC registered 1N5333B through 1N5388B series of 5-watt Zener diodes. The series offers a wide selection of voltages ranging from 3.3 V to 200 V. The B suffix specifically denotes a standard voltage tolerance of plus or minus 5 percent.

Replacement Considerations

Equivalent parts include other 1N5346 variants with different tolerances or packaging options. Cross-reference with SMBJ5346B or SMBG5346B for surface mount applications requiring similar electrical specifications.