SMAJ4482CE3/TR13

Single Zener Diodes Overview

The SMAJ4482CE3/TR13 is a 1.5-watt Zener diode manufactured by Microsemi Corporation, housed in a DO-214AC (SMAJ) surface-mount package. It features a nominal Zener voltage of 51 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 metallurgically bonded construction for enhanced reliability. It provides superior surge protection against ESD and EFT transients.

Single Zener Diodes Feature Summary

• Metallurgically bonded silicon construction for high reliability
• Thermally efficient design with J-bend contacts for stress relief
• Compliant with RoHS standards via the e3 suffix

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 IEC61000-4-2 and -4-4

Single Zener Diodes Procurement Notes

Verify the specific ordering suffixes to confirm tolerance and packaging details. The 'C' indicates a ±2% Zener voltage tolerance, while 'e3' denotes RoHS compliance. Confirm that the tape and reel quantity matches the required production volume, as standard reels contain 2500 units. Ensure the component meets the necessary MIL-PRF-19500/406 screening requirements if applicable.

Single Zener Diodes Selection Notes

Select this component when a precise 51-volt reference is needed in a compact surface-mount form factor. The ±2% tolerance offers tighter regulation than standard ±5% variants. Consider the thermal resistance of 15 °C/W and power derating characteristics for high-temperature environments. The SMAJ package facilitates easier automatic placement compared to MELF styles.

Single Zener Diodes Part Context

This part belongs to the SMAJ4460 through SMAJ4496 series of 1.5-watt Zener diodes. It serves as a surface-mount equivalent to the 1N4482 axial leaded diode, offering double the surge performance due to a larger active die element. The series is designed to meet or exceed the electrical performance of legacy components while providing improved handling and strain relief.

Single Zener Diodes Replacement Considerations

The SMAJ4482CE3/TR13 is a direct surface-mount replacement for the 1N4482 diode. For higher tolerance requirements, consider the SMAJ4482D variant with ±1% tolerance. If standard ±5% tolerance is acceptable, the SMAJ4482 without the 'C' suffix may be used.