1N4691UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4691UR-1 is a Zener diode designed for voltage regulation applications. It utilizes a silicon unidirectional junction and is housed in a DO-213AA-2 surface-mount package, also known as MELF-2. The device supports soldering via SMD/SMT installation methods and operates within an extended temperature range from -65°C to +175°C. It features hermetic sealing in glass construction, ensuring reliability in demanding environments.

Single Zener Diodes Feature Summary

• Hermetically sealed glass encapsulation for environmental protection
• Surface-mount MELF-2 package design for automated assembly
• Extended high-temperature operational capability up to 175°C

Single Zener Diodes Applications

• Voltage reference circuits requiring stable regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm the exact package variant and hermetic sealing status. Ensure compatibility with surface-mount reflow profiles. Confirm RoHS compliance requirements as indicated in manufacturer specifications before procurement.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface-mount Zener diode is required. The DO-213AA-2 package offers space efficiency compared to through-hole alternatives. Consider the high-temperature rating for applications exposed to thermal stress during operation or manufacturing processes.

Single Zener Diodes Part Context

This part belongs to the standard Zener diode family produced by Microchip Technology. It shares functional similarities with other 1N46xx series devices but differs in packaging and termination style. The UR-1 designation specifically identifies the surface-mount hermetic variant within the broader product line.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N4691-1 for through-hole hermetic versions or MSP1N4692UR-1 for similar MELF packages with different voltage ratings. Verify pinout and electrical parameters match before substitution.