1N4624UR/TR

Overview

The Microchip Technology 1N4624UR/TR is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C junction temperature. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 3 V and a Zener impedance of 1550 Ohms. The component utilizes the DO-213AA (SMA) surface-mount package, making it suitable for compact electronic designs requiring reliable voltage reference or protection.

Feature Summary

• Provides stable voltage regulation with a nominal 4.7 V Zener breakdown
• Supports high-temperature operation up to 175°C junction temperature
• Utilizes surface-mount DO-213AA packaging for automated assembly

Applications

• Voltage reference circuits in precision instrumentation
• Over-voltage protection for sensitive semiconductor inputs
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix UR/TR against official Microchip documentation to confirm surface-mount configuration and tape-and-reel packaging. Ensure compliance with RoHS directives if required by your application standards. Cross-reference datasheet parameters such as Zener impedance and leakage current to validate suitability for your circuit requirements before procurement.

Selection Notes

Select this component when a 4.7 V regulation point is required in a surface-mount form factor. Consider the 500 mW power rating and thermal management capabilities relative to your PCB layout. Verify that the ±5% voltage tolerance meets your circuit's precision needs. Compare against through-hole equivalents if space constraints allow for alternative packaging options.

Part Context

This part belongs to the 1N4624 series of Zener diodes manufactured by Microchip Technology. The series offers various voltage ratings and packaging options, including axial leaded and surface-mount variants. The 1N4624UR/TR specifically denotes the surface-mount version in the DO-213AA package, providing a modern alternative to traditional through-hole components for contemporary electronics manufacturing.

Replacement Considerations

Direct substitutes may include other 4.7 V Zener diodes in the SMA package from different manufacturers, provided electrical parameters match. Verify pinout compatibility and thermal characteristics. Generic replacements should be evaluated for Zener impedance and leakage current similarities to ensure circuit performance consistency.