JANTX1N5543BUR-1/TR

Single Zener Diodes Overview

The JANTX1N5543BUR-1/TR is a low voltage surface mount Zener diode manufactured by Microchip Technology. It belongs to the 1N5518BUR-1 through 1N5546BUR-1 series, offering a nominal Zener voltage of 25V with a standard tolerance of ±5%. The device features a maximum power dissipation of 500 mW and operates within an extended temperature range from -65°C to +175°C. It utilizes a DO-213AA (SMB) glass package and includes an internal metallurgical bond option indicated by the '-1' suffix. This construction ensures reliability under harsh conditions.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced mechanical stability
• Qualified per MIL-PRF-19500/437 military standards
• Low voltage avalanche regulation capability
• Surface mount design in glass DO-213AA package

Single Zener Diodes Applications

• Military aerospace electronic systems
• Harsh environment voltage regulation circuits
• High-reliability power supply protection

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against the original design specification to ensure compatibility with the required military screening level. Confirm that the reel packaging format aligns with automated assembly requirements. Cross-reference the part number with the manufacturer's current datasheet to validate active status and any potential obsolescence notices before finalizing procurement plans.

Single Zener Diodes Selection Notes

Select this component when a robust surface mount Zener diode is required for low voltage applications in extreme environments. The internal metallurgical bond provides superior resistance to shock and vibration compared to non-bonded types. Ensure the circuit design accommodates the 500 mW power rating and the specific 25V breakdown voltage characteristics at the intended operating temperature.

Single Zener Diodes Part Context

This part is part of the 1N5518BUR-1 through 1N5546BUR-1 series of low voltage surface mount Zener diodes. The series covers a voltage range from 3.3V to 33V. The 'JANTX' prefix indicates a specific level of military qualification screening. The 'BUR-1' designation specifies the surface mount package type and the internal metallurgical bond feature.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N5543BUR-1 and JANTXV1N5543BUR-1, which share the same electrical specifications but differ in military screening levels. Commercial equivalents such as 1N5543B may be considered if military qualification is not required.