SMAJ6490CE3/TR13

Single Zener Diodes Overview

The SMAJ6490CE3/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 5.1 volts with a ±2% tolerance, indicated by the 'C' suffix. The device operates within a temperature range of -55°C to +150°C and includes stress-relief J-bend contacts for improved handling. It provides enhanced surge performance compared to standard equivalents, offering protection against ESD and electrical fast transients.

Single Zener Diodes Feature Summary

• Metallurgically bonded construction ensures high reliability and durability under thermal stress.
• Low-profile plastic surface mount configuration facilitates easier placement and automatic handling.
• Stress-relief J-bend contacts reduce mechanical strain during mounting operations.
• Thermally efficient design lowers junction temperatures and extends operating ranges before derating.

Single Zener Diodes Applications

• High-reliability voltage regulation in low-profile surface mount locations
• Airborne or satellite applications requiring lightweight components
• Protection from ESD and EFT transients per IEC standards

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix to confirm tolerance levels and compliance status. The 'e3' suffix indicates RoHS compliance. Confirm that the tape and reel packaging matches the required quantity increments for automated assembly lines. Ensure the component meets the necessary MIL-PRF-19500/406 screening requirements if applicable to your project specifications.

Single Zener Diodes Selection Notes

Select this component when a precise 5.1-volt reference is needed in a compact surface-mount footprint. Consider its superior surge capability over traditional axial equivalents for robust transient protection. Evaluate the thermal resistance characteristics to ensure adequate heat dissipation within the target enclosure constraints without premature power derating.

Single Zener Diodes Part Context

This part belongs to the SMAJ4460 through SMAJ4496 and SMAJ6485 through SMAJ6491 series of 1.5-watt Zener diodes. These devices are designed to meet or exceed the electrical performance of older 1N4460–1N4496 and 1N6485–1N6491 counterparts while providing double the overall surge performance due to a larger active die element.

Single Zener Diodes Replacement Considerations

Direct replacements include other SMAJ6490 variants from Microsemi. Cross-reference with 1N4490 or 1N6490 axial packages if form-factor changes are acceptable, noting the difference in surge handling capabilities between surface-mount and through-hole technologies.