1N5335A/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5335A/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 belongs to the JEDEC registered 1N5333-5388B series, featuring an axial-lead T-18 plastic package. The 'A' suffix indicates a standard voltage tolerance of ±10%, while the '/TR12' suffix denotes availability in tape and reel packaging per EIA-296 standards. The device operates within a 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
• Features flexible axial-lead mounting terminals for versatile circuit integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

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 that the specific part number includes the correct suffixes for your requirements. Confirm whether the TR12 designation matches your automated assembly equipment specifications. Ensure compliance with RoHS directives if lead-free variants are mandatory for your production line. Cross-reference the manufacturer's latest documentation to confirm current screening levels and material compositions before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V regulation point is required with a 5 W power handling capability. The ±10% tolerance suits applications where precise voltage accuracy is not critical. Consider the thermal resistance characteristics and derating curves for proper heat sinking design. Evaluate the axial lead format against available board space and mounting constraints compared to surface mount alternatives.

Single Zener Diodes Part Context

This device is part of the Microsemi 1N5333 through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. Different suffix letters identify specific voltage tolerances, such as B for ±5% and A for ±10%. Military equivalent screening levels are available by adding prefixes like MQ, MX, or MV to the base part number.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 5 W Zener diodes with a 3.9 V nominal voltage and similar axial lead packages. Verify that replacement devices meet the same thermal resistance and surge current specifications. Check for compatible tolerance levels and operating temperature ranges to ensure circuit performance remains unaffected.