1N4105UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4105UR-1 is a surface mount Zener voltage regulator diode housed in the DO-213AA (LL34) glass MELF package. It provides a nominal Zener voltage of 11 V with a maximum power dissipation of 500 mW at +50°C. The device features an internal metallurgical bond, indicated by the -1 suffix, ensuring high reliability for military and aerospace applications. It operates within a junction temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced structural integrity
• Hermetically sealed glass encapsulation for environmental protection
• Qualified per MIL-PRF-19500/435 for high-reliability standards

Single Zener Diodes Applications

• High-reliability aerospace electronic circuits
• Military-grade voltage regulation systems
• Harsh environment signal conditioning

Single Zener Diodes Procurement Notes

Verify that the part number includes the -1 suffix to confirm the presence of the internal metallurgical bond, which distinguishes it from non-bonded commercial variants. Ensure the procurement specification explicitly requires qualification per MIL-PRF-19500/435 to guarantee the necessary reliability levels for defense or space applications.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, surface-mount Zener diode with a metallurgical bond is required for critical applications. It serves as the surface-mount equivalent to the through-hole 1N4105 series. Consider the DO-213AA package constraints and the specific 11 V regulation requirement against available alternatives in the 1N4099UR-1 through 1N4135UR-1 family.

Single Zener Diodes Part Context

This device belongs to the 1N4099UR-1 through 1N4135UR-1 series of 500 mW metallurgically bonded glass surface mount Zener diodes manufactured by Microchip Technology. These components are designed to replace traditional axial leaded Zeners in modern surface-mount assembly processes while maintaining the ruggedness required for demanding operational environments.

Single Zener Diodes Replacement Considerations

Direct equivalents include other manufacturers' DO-213AA packaged Zener diodes rated at 11 V with similar power dissipation. Verify that any substitute also meets MIL-PRF-19500/435 requirements if military qualification is mandatory.