1N4748G R0G

Overview

The 1N4748G R0G is a single silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It features a nominal Zener voltage of 22 V with a tolerance of 5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range extending up to 150 °C. Key electrical characteristics include a dynamic impedance of 23 Ohms at a test current of 11.5 mA, a maximum reverse leakage current of 100 nA, and a forward voltage of 1.2 V at 200 mA. The component utilizes a DO-41 axial leaded package.

Feature Summary

• Glass passivated junction construction for enhanced stability
• Built-in strain relief mechanism integrated into the package design
• Low inductance structure suitable for high-frequency applications

Applications

• Voltage regulation in DC power supply circuits
• Protection against voltage transients and spikes
• Reference voltage generation in electronic measurement instruments

Procurement Notes

Verify the specific suffix 'R0G' against official Taiwan Semiconductor documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the ordering part number matches the exact RoHS compliance status and marking requirements defined in the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when a standard 22 V reference is required in through-hole designs. The 1 W power rating supports moderate current handling, while the glass passivation ensures reliability in harsh environments. Verify that the DO-41 package dimensions fit the target PCB layout and that the thermal derating curves align with the expected operating ambient temperatures.

Part Context

This component belongs to the 1N47 series of 1 Watt Zener diodes produced by Taiwan Semiconductor. The series offers a wide range of voltage options from 3.3 V to 82 V, all sharing similar physical dimensions and performance characteristics. The 1N4748 variant specifically targets the 22 V segment, providing a standardized solution for general-purpose voltage regulation tasks across various industrial and consumer electronics applications.

Replacement Considerations

Compatible substitutes include the 1N4748A from Microchip Technology and ON Semiconductor, as well as the 1N4748B from Leshan Radio Company. These alternatives share identical electrical ratings and DO-41 packaging, ensuring direct pin-to-pin compatibility without requiring circuit redesign.