1N4552B

Single Zener Diodes Overview

The Microchip Technology 1N4552B is a high-power 50 W Zener diode with a nominal voltage of 5.1 V and a test current of 2,450 mA. It features a maximum dynamic impedance of 0.12 Ohms at the test current and a reverse leakage current of 20 µA at 1.0 V. The device operates within a junction temperature range of -65°C to +175°C and utilizes a DO-5 (DO-203AB) stud mount package.

Single Zener Diodes Feature Summary

• Hermetically sealed welded metal and glass construction
• Internal solder bond design for structural integrity
• Standard polarity configuration with anode connected to the case
• Radiation hard characteristics suitable for harsh environments

Single Zener Diodes Applications

• High power voltage regulation
• Overvoltage protection circuits
• Reference voltage generation in power supplies

Single Zener Diodes Procurement Notes

Verify that the component matches the specific JEDEC registered part number 1N4552B. Confirm the manufacturer origin as Microsemi or its successor entity. Ensure the physical package corresponds to the DO-5 hexagonal stud format. Check for any suffixes indicating reversed polarity or military qualifications if required by the design specifications.

Single Zener Diodes Selection Notes

Select this component when a robust 50 W voltage regulator is needed. The low thermal resistance allows effective heat dissipation via the stud mount. Consider the standard anode-to-case polarity during circuit layout. Verify that the operating current remains within the specified limits to maintain stable regulation across the temperature range.

Single Zener Diodes Part Context

This device belongs to the 1N4549B through 1N4556B series of 50 Watt Zener diodes. These parts are designed for applications requiring significant power handling capabilities. The series provides a broad selection of voltages from 3.9 V to 200 V. They are commonly used in industrial and aerospace systems where reliability is critical.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 50 W Zener diodes with a 5.1 V rating and DO-5 package. Verify thermal resistance and impedance characteristics match the original design requirements. Military qualified versions such as JANTX1N4552B may be substituted if higher screening levels are necessary.