1N4747CP/TR8

Overview

The Microchip Technology 1N4747CP/TR8 is a silicon 1-watt Zener diode with a nominal voltage of 20 V and a tight tolerance of ±2%. It operates within a temperature range of -65°C to +150°C. The device features a plastic DO-41 axial lead package, a maximum dynamic impedance of 22 ohms at a test current of 12.5 mA, and a maximum reverse leakage current of 100 nA. It is supplied in tape and reel packaging.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body for moisture resistance.
• Offers flexible axial-lead mounting terminals suitable for through-hole applications.

Applications

• Voltage reference circuits requiring high precision
• Overvoltage protection in sensitive electronic systems
• Power supply regulation

Procurement Notes

Verify that the ordering suffix matches the required specifications. Confirm the 'TR' suffix indicates tape and reel packaging and the 'P' suffix denotes the plastic DO-41 package. Ensure the 'C' suffix corresponds to the ±2% voltage tolerance. Check manufacturer documentation for specific military screening prefixes if applicable.

Selection Notes

Select this component when a 20 V Zener voltage with ±2% tolerance is required. Consider the 1 W power dissipation rating and the operating temperature range of -65°C to +150°C. The plastic DO-41 package is suitable for standard through-hole mounting. Verify compatibility with circuit requirements for dynamic impedance and leakage current.

Part Context

This part belongs to the 1N47xx series of 1 Watt Zener Diodes manufactured by Microsemi (now Microchip Technology). The series covers a wide voltage range from 3.3 V to 100 V. The 'AP' designation indicates a plastic encapsulated version, while the 'C' suffix specifies a tighter 2% voltage tolerance compared to the standard 5% or 10% options.

Replacement Considerations

Equivalent parts include other 20 V Zener diodes with ±2% tolerance and 1 W power rating in a DO-41 package. Verify electrical characteristics such as dynamic impedance and leakage current match the original design requirements before substitution.

FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix indicates a voltage tolerance of ±2% on the nominal Zener voltage.

What is the maximum operating temperature for this device?

The maximum operating and storage temperature is +150°C.