1N5346C/TR12

Overview

The Microchip Technology 1N5346C/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 9.1V and a tight tolerance of ±2%. It operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. The device includes tape and reel packaging for automated assembly.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance
• Handles high surge stresses and steady-state power dissipation
• Compatible with automated surface mount or through-hole assembly processes

Applications

• Voltage reference circuits requiring stable DC levels
• Power supply protection against overvoltage conditions
• Clamping applications in electronic signal processing

Procurement Notes

Verify the specific suffix 'TR12' indicates tape and reel packaging compatible with standard pick-and-place equipment. Confirm RoHS compliance status if required by environmental regulations. Ensure the component matches the JEDEC registered series specifications for thermal resistance and maximum current ratings during integration.

Selection Notes

Select this component when a 9.1V Zener voltage with tighter than standard tolerances is necessary. The 5W power rating supports high-current applications provided adequate heat sinking is implemented. Verify that the T-18 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series offers a wide selection of voltages from 3.3V to 200V with various tolerance options identified by suffix letters.

Replacement Considerations

Equivalent parts include other 9.1V 5W Zener diodes with ±2% tolerance in T-18 packages. Verify electrical characteristics such as dynamic impedance and reverse leakage current match the original design requirements before substitution.