1N5346A/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5346A/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 9.1 V with a ±10% tolerance, indicated by the 'A' suffix. The device operates in a T-18 axial leaded package and supports tape and reel packaging via the 'TR12' suffix. Electrical characteristics include a test current of 150 mA, a maximum dynamic impedance of 2.0 Ohms, and a maximum reverse leakage current of 7.5 µA. It withstands a maximum surge current of 6.6 A and functions within an operating temperature range of -65°C to +150°C.

Single Zener Diodes 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 through-hole integration
• Moisture classification Level 1 requiring no dry pack

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm exact electrical tolerances and packaging configurations. Confirm RoHS compliance status and any applicable military screening prefixes if required for the intended application environment. Ensure thermal management design accounts for the specified power dissipation ratings.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V regulation point with ±10% tolerance is required in a 5-watt axial package. Consider the T-18 form factor for through-hole assembly needs. Evaluate thermal derating requirements based on the specific mounting method, whether lead-mounted or PCB-mounted, to ensure operation within the safe junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a wide voltage selection from 3.3 V to 200 V. The 1N5346 variant specifically targets the 9.1 V regulation segment within this standardized JEDEC registered lineup.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering equivalent 5W axial Zener diodes rated at 9.1V ±10%. Verify mechanical dimensions of the T-18 package and thermal resistance characteristics match the existing design constraints.