1N5334/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5334/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series, housed in an axial-lead T-18 package with TR suffix indicating tape and reel packaging. It provides voltage regulation at a nominal Zener voltage of 3.6 volts with a standard ±5% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 2.5 ohms at a test current of 350 mA. Maximum reverse leakage current is specified as 150 µA at 1.0 volt, while the forward voltage reaches a maximum of 1.2 volts at 1.0 ampere.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses without damage
• Minimal changes in voltage versus current as defined by voltage regulation specifications

Single Zener Diodes Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• Power supply reference applications
• Protection against overvoltage conditions in electronic systems

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required electrical characteristics, particularly the 3.6V Zener voltage and ±5% tolerance associated with the B suffix. Confirm the TR suffix indicates tape and reel packaging if automated assembly is intended. Ensure compliance with moisture classification Level 1 requirements and verify lead plating options such as tin-lead or RoHS compliant annealed matte-tin based on project specifications.

Single Zener Diodes Selection Notes

Select this component when a 5-watt power rating and axial-lead T-18 package are necessary for thermal management and mechanical stability. Consider the wide operating temperature range suitable for harsh environments. Evaluate the need for specific screening levels like MIL-PRF-19500 by adding prefixes if higher reliability is required. Compare dynamic impedance and leakage current specifications against circuit sensitivity requirements.

Single Zener Diodes Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi Corporation. The series offers a selection of voltages from 3.3 to 200 volts with various tolerance options identified by suffix letters. These plastic encapsulated diodes are designed for high maximum DC currents with adequate heat sinking due to their low thermal resistance design.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 5-watt axial Zener diodes with matching 3.6V voltage and ±5% tolerance. Surface mount equivalents in SMBJ or SMBG packages are available for the same voltage ratings. Verify pinout compatibility and thermal resistance characteristics when substituting.