1N4755A R1G

Overview

The 1N4755A R1G is a silicon planar Zener diode manufactured by Taiwan Semiconductor Corporation. It provides a nominal voltage regulation of 43 V with a power dissipation rating of 1 W at 25°C ambient temperature. The device utilizes a DO-41 axial leaded glass package, suitable for through-hole mounting. Electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 70 Ω at the test current of 6 mA. The component supports an operating junction temperature range from -65°C to +200°C.

Feature Summary

• Provides stable voltage regulation using silicon planar technology
• Features high thermal stability with a maximum junction temperature of 200°C
• Utilizes a hermetically sealed glass passivated junction for reliability

Applications

• Voltage reference circuits requiring precise regulation
• Overvoltage protection in electronic systems
• Clipping and clamping applications in signal processing

Procurement Notes

Verify the specific suffix R1G against official Taiwan Semiconductor documentation to confirm packaging details and compliance status. Ensure the procurement source provides valid datasheets matching the manufacturer's specifications. Cross-reference electrical parameters such as Zener voltage tolerance and leakage current with the official product data sheet before integration into designs.

Selection Notes

Select this component when a 43 V regulation point is required within a 1 W power dissipation limit. The DO-41 package is appropriate for standard through-hole PCB layouts. Consider the 70 Ω Zener impedance for dynamic load requirements. Verify that the operating environment remains within the specified -65°C to +200°C junction temperature range for optimal performance.

Part Context

This part belongs to the 1N47xx series of power Zener diodes, widely used for general-purpose voltage regulation. The 1N4755A variant specifically targets the 43 V market segment. The R1G suffix typically denotes specific tape-and-reel or bulk packaging configurations defined by the manufacturer, distinguishing it from standard loose-pack variants.

Replacement Considerations

Compatible replacements include other manufacturers' 1N4755A devices meeting the same JEDEC DO-41 outline and 43 V / 1 W specifications. Ensure substitute parts maintain equivalent Zener impedance and leakage current limits. Verify that any alternative package suffixes do not alter the physical footprint or pin configuration.