1N5348B/TR8

Overview

The Microchip Technology 1N5348B/TR8 is a silicon Zener diode with a nominal voltage of 11 V and ±5% tolerance. It features a 5 W power dissipation rating, 125 mA test current, and 2.5 Ω maximum dynamic impedance. The device operates within a -65°C to +150°C temperature range and utilizes a T-18 axial lead package.

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 power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify the specific suffix 'TR8' against official documentation to confirm tape and reel packaging compliance. Confirm RoHS status as the base part may differ from the e3 variant. Validate manufacturer origin and lot traceability requirements prior to procurement.

Selection Notes

Select this component for applications requiring precise 11 V regulation with ±5% tolerance. Ensure adequate heat sinking is provided to maintain operation within the 5 W power dissipation limit. Verify that the T-18 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of 5-watt silicon Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V, providing standardized options for various voltage regulation needs in industrial and commercial electronics.

Replacement Considerations

Compatible substitutes include other 11 V, 5 W Zener diodes in the T-18 package with matching electrical characteristics. Verify thermal resistance and surge current ratings match or exceed original specifications.