1N4755A

Overview

The SMC Diode Solutions 1N4755A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 43 V with a tolerance of ±5%. The component supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65°C to +200°C junction temperature. Packaged in the DO-41 axial through-hole format, it exhibits a maximum reverse leakage current of 5 µA at 32.7 V and a Zener impedance of 70 Ohms at a test current of 6 mA.

Feature Summary

• Provides stable voltage regulation via unidirectional Zener breakdown characteristics
• Engineered for high thermal stability with operation up to 200°C junction temperature
• Constructed using silicon technology for reliable performance in through-hole mounting

Applications

• Voltage reference circuits requiring precise 43 V levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation in power supplies

Procurement Notes

Verify the manufacturer designation on the component marking or datasheet, as the 1N4755A part number is utilized by multiple semiconductor producers including onsemi, Vishay, and Central Semiconductor. Confirm that the specific batch supplied matches the SMC Diode Solutions origin if brand specificity is required for compliance or sourcing records.

Selection Notes

Select this component when a standard 43 V Zener voltage is required in a DO-41 package. Ensure the application circuit can handle the 1 W power dissipation limit and that the operating environment remains within the specified -65°C to +200°C junction temperature range for optimal reliability.

Part Context

The 1N4755A belongs to the widely recognized 1N47xx series of glass-passivated Zener diodes. This series is standardized for general-purpose voltage regulation tasks. The DO-41 axial package allows for easy insertion into printed circuit boards or point-to-point wiring configurations commonly found in industrial and consumer electronics.

Replacement Considerations

Direct parameter-equivalent substitutes include the 1N4755A manufactured by onsemi, Vishay General Semiconductor, and Central Semiconductor Corp. These alternatives share identical electrical specifications and mechanical dimensions.