1N4772/TR

Overview

The Microchip Technology 1N4772/TR is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The component supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. It utilizes a DO-35 axial through-hole package, ensuring compatibility with standard PCB layouts. Key electrical characteristics include a maximum reverse leakage current of 10 nA and a test current of 50 µA. The device exhibits a Zener impedance of 200 Ohms at the specified test conditions.

Feature Summary

• Provides stable voltage regulation with a nominal 9.1 V breakdown voltage.
• Capable of handling 500 mW power dissipation in a compact form factor.
• Operates reliably across an extended industrial temperature range up to 175°C.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in sensitive electronic systems.
• Clamping applications for signal conditioning and waveform shaping.

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm packaging configuration. The base part number indicates a standard variant, while suffixes may denote reel or tape-and-reel options. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region and production cycle.

Selection Notes

Select this component when a 9.1 V regulation point is required with moderate power handling capabilities. Ensure the circuit design accommodates the 200 Ohm Zener impedance for accurate performance. Verify that the operating current remains within limits to prevent exceeding the 500 mW thermal dissipation rating under all expected load conditions.

Part Context

This device belongs to the widely utilized 1N47xx series of Zener diodes manufactured by Microchip Technology. These components are established standards in discrete semiconductor applications, offering consistent performance for general-purpose voltage regulation tasks across various industrial and commercial electronics sectors.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4772 variants meeting identical electrical specifications. Cross-reference with equivalent parts from other suppliers ensuring matching voltage, power, and package dimensions for seamless integration without circuit modification.