3EZ3.9DE3/TR12

Single Zener Diodes Overview

The 3EZ3.9DE3/TR12 is a single Zener diode manufactured by Microsemi Corporation, designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V and a maximum power dissipation of 3 W. The device utilizes a DO-204AL (DO-41) axial leaded plastic package suitable for through-hole mounting. Key electrical characteristics include a reverse leakage current of 500 nA at 3.12 V and a forward voltage drop of 1.2 V at 200 mA. It operates within a junction temperature range of -65°C to +150°C and complies with RoHS standards.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in the low-voltage range using a 3-watt axial-leaded design.
• Features hermetic-sealed qualities and high-rated temperature capability inherent to the glass encapsulation construction.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise low-voltage regulation
• Protection of voltage-sensitive electronic devices against transients
• General-purpose voltage clamping in industrial equipment

Single Zener Diodes Procurement Notes

Verify component authenticity by checking manufacturer markings and datasheet alignment. Confirm RoHS compliance status and specific tolerance suffixes if tighter voltage accuracy is required. Ensure the axial lead configuration matches the target PCB layout requirements before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a 3-watt power rating and 3.9 V regulation point are necessary. Consider the DO-41 package size for through-hole assembly constraints. Evaluate thermal management needs given the 3 W dissipation capability and operating temperature range up to 150°C.

Single Zener Diodes Part Context

This part belongs to the 3EZ series of silicon Zener diodes produced by Microsemi. The series offers a wide selection of voltages from 3.9 to 200 volts with various tolerance options. These devices are registered JEDEC components available in both plastic and glass encapsulated versions for different reliability and environmental requirements.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 3.9 V, 3 W Zener diodes in DO-41 packages from manufacturers such as ON Semiconductor or Vishay. Verify that replacement candidates match the 3 W power rating, 3.9 V nominal voltage, and axial lead form factor.