SMAJ4490E3/TR13

Single Zener Diodes Overview

The SMAJ4490E3/TR13 is a 1.5-watt Zener diode manufactured by Microsemi Corporation, housed in the DO-214AC (SMAJ) surface-mount package. It features a nominal Zener voltage of 110 volts with a ±5% tolerance and a test current of 300 mA. The device provides a maximum dynamic impedance of 4000 ohms and a reverse leakage current of 25 µA at its rated voltage. It operates within a temperature range of -55°C to +150°C and includes J-bend contacts for stress relief.

Single Zener Diodes Feature Summary

• Metallurgically bonded construction for enhanced reliability
• Thermally efficient design with J-bend contacts for stress relief
• Low-profile surface mount configuration suitable for automatic handling

Single Zener Diodes Applications

• High-reliability voltage regulation in low-profile surface mount locations
• Protection against ESD transients per IEC 61000-4-2
• Protection against electrical fast transients (EFT) per IEC 61000-4-4

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance as specified in the datasheet. Confirm the package type matches the required DO-214AC footprint. Ensure the component meets the specific voltage and power dissipation requirements for the target circuit application before procurement.

Single Zener Diodes Selection Notes

Select this component when a 110-volt Zener reference is required in a compact surface-mount form factor. Consider the 1.5-watt steady-state power rating and the thermal resistance characteristics for proper heat management. Verify compatibility with automated placement equipment due to the flat handling surface design.

Single Zener Diodes Part Context

This part belongs to the SMAJ4460 through SMAJ4496 series of 1.5-watt Zener diodes from Microsemi's Scottsdale Division. The series is designed to meet or exceed the performance of traditional axial leaded equivalents while offering superior surge protection capabilities and lower junction temperatures.

Single Zener Diodes Replacement Considerations

Direct replacements include other SMAJ4490 variants from Microsemi or equivalent 1.5W Zener diodes in the DO-214AC package from other manufacturers, provided they match the 110V nominal voltage and electrical specifications.