1N5335B/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5335B/TR12 is a silicon unidirectional voltage regulator diode with a nominal Zener voltage of 3.9 V and a maximum power dissipation of 5 W at 25°C. It features a ±5% tolerance, a test current of 320 mA, and a maximum dynamic impedance of 2.0 Ω. The device operates within a temperature range of -65°C to +150°C and utilizes an axial-lead T-18 plastic package.

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 secure installation

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm electrical tolerances and packaging options. Confirm RoHS compliance status if required by project specifications. Ensure thermal management strategies align with the specified derating curves for the intended mounting method.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V reference with 5 W power handling is required. Consider the ±5% tolerance and dynamic impedance characteristics for precision applications. Evaluate thermal resistance requirements based on the chosen heat sinking or PCB mounting configuration.

Single Zener Diodes Part Context

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

Single Zener Diodes Replacement Considerations

Consult official manufacturer documentation for verified substitute part numbers. Cross-referencing should be limited to confirmed equivalents listed in public databases.