1N3995

Single Zener Diodes Overview

The Microchip Technology 1N3995 is a stud-mount Zener diode housed in the DO-4 (DO-203AA) package. It provides a nominal Zener voltage of 4.7 V with a power dissipation rating of 10 W. The device features internal solder bond construction and hermetic sealing for reliability. Key electrical parameters include a maximum reverse leakage current of 1 uA, a Zener impedance of 1.2 Ohms, and a test current of 81 mA. It operates within a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed welded construction
• Internal solder bond design
• Stud-mount configuration

Single Zener Diodes Applications

• Voltage regulation circuits
• High-power protection applications
• Industrial equipment requiring hermetic sealing

Single Zener Diodes Procurement Notes

Verify the specific datasheet version for the 1N3995 as historical manufacturing data may vary between original Motorola specifications and current Microchip Technology documentation. Confirm that the DO-4 package dimensions match the mechanical constraints of the target assembly. Ensure thermal management strategies account for the 10 W power dissipation capability during operation.

Single Zener Diodes Selection Notes

Select this component when high power handling and environmental sealing are required. The 10 W rating distinguishes it from lower-power axial equivalents. Verify that the 4.7 V breakdown voltage aligns with circuit requirements. Consider the stud-mount form factor for direct heatsinking or chassis mounting applications where space allows for larger packages.

Single Zener Diodes Part Context

The 1N3995 belongs to the legacy 1N series of Zener diodes originally established by Motorola Semiconductor. Microchip Technology continues to support this part number through its acquisition of related semiconductor assets. The DO-4 package is a standard metal can style designed for high-power industrial and military applications requiring robust physical and electrical performance.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5995B family members for similar voltage ratings in different packages. Cross-reference with Motorola/ON Semiconductor 1N3995 datasheets for dimensional compatibility. Verify that substitute components meet the same hermetic sealing and power dissipation standards.