SMAJ4485CE3/TR13

Single Zener Diodes Overview

The SMAJ4485CE3/TR13 is a 1.5-watt Zener diode manufactured by Microsemi Corporation, designed for surface-mount applications in the DO-214BA (SMAJ) package. It features a nominal Zener voltage of 68V with a ±2% tolerance and a maximum dynamic impedance of 1700 ohms at a test current of 100mA. The device operates within a temperature range of -55°C to +150°C and includes stress-relief J-bend contacts. Power derating begins at 125°C and reaches zero dissipation at 150°C.

Single Zener Diodes Feature Summary

• Metallurgically bonded construction for enhanced reliability
• Thermally efficient design utilizing larger active die elements
• Stress-relief J-bend contacts for improved strain management
• RoHS compliant packaging configuration

Single Zener Diodes Applications

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

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-214BA footprint. Ensure the specific part number corresponds to the desired ±2% tolerance variant. Check for any additional screening prefixes if military-grade reliability is required.

Single Zener Diodes Selection Notes

Select this component when a 68V Zener reference is needed in a compact surface-mount form factor. Consider the thermal resistance and power derating curve for high-temperature environments. Verify compatibility with automated placement equipment due to the flat handling surface profile.

Single Zener Diodes Part Context

This device belongs to the SMAJ4460 through SMAJ4496 series of 1.5-watt Zener diodes. It provides performance comparable to or exceeding traditional axial leaded equivalents while offering superior surge protection capabilities. The series is engineered for applications demanding robust transient suppression and stable voltage regulation.

Single Zener Diodes Replacement Considerations

Direct replacements include other SMAJ4485 variants from the same manufacturer family. Cross-reference with standard axial leaded 1N4485 types only if mechanical mounting constraints allow for through-hole integration.