1N4756UR-1

Overview

The Microchip Technology 1N4756UR-1 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 47 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65°C to +175°C. Packaged in the DO-213AA-2 surface-mount format, it exhibits a maximum reverse leakage current of 5 µA at 35.8 V and a Zener impedance of 80 Ohms.

Feature Summary

• Provides stable voltage regulation through precise Zener breakdown characteristics.
• Engineered for high-temperature reliability with operation up to 175°C.
• Utilizes a compact glass MELF package for efficient surface-mount integration.

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix UR-1 against official Microchip documentation to confirm the exact package variant and testing standards. Ensure compatibility with surface-mount assembly processes given the DO-213AA-2 form factor. Cross-reference electrical parameters such as Zener impedance and leakage current with the latest datasheet revision to validate performance requirements for your specific design constraints.

Selection Notes

Select this component when a robust 47 V regulation point is required in space-constrained designs. The wide operating temperature range makes it suitable for industrial environments. Compare its 1 W power rating and low leakage specifications against alternative packages to ensure optimal thermal management and circuit efficiency for the intended application load.

Part Context

This part belongs to the standard Zener diode family manufactured by Microchip Technology. It serves as a surface-mount equivalent to traditional axial-leaded regulators, offering similar electrical performance in a smaller footprint. The DO-213AA-2 package allows for automated placement, supporting high-volume manufacturing while maintaining the reliability expected from hermetically sealed or high-grade semiconductor devices.

Replacement Considerations

Direct substitutes include the 1N4756AUR/TR from the same manufacturer, which shares identical electrical ratings and package dimensions. Verify pinout orientation and thermal characteristics before swapping with generic equivalents to ensure circuit integrity.