1N4754A-T50A

Overview

The onsemi 1N4754A-T50A is a silicon planar power Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The device dissipates up to 1 W of power and operates within a junction temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 60 Ohms at a test current of 6.5 mA. It utilizes the DO-41 axial through-hole package.

Feature Summary

• Provides stable voltage regulation via controlled avalanche breakdown in the reverse bias region.
• Engineered for high thermal stability with an extended operating temperature range up to 200°C.
• Constructed using silicon planar technology for reliable performance in through-hole mounting configurations.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in electronic systems.
• Clamping applications for transient voltage suppression.

Procurement Notes

Verify the specific suffix T50A against the manufacturer's official datasheet to confirm packaging details, as standard 1N4754A devices may differ in reel specifications or lead finish. Ensure the procurement documentation explicitly references the onsemi manufacturer source to avoid confusion with generic equivalents from other suppliers. Cross-reference the part number with the latest product change notifications to verify any recent manufacturing updates.

Selection Notes

Select this component when a 39 V regulation point is required with high thermal endurance. The 1 W power rating supports moderate current loads in through-hole designs. Verify that the circuit design accommodates the specified 60 Ohm Zener impedance for accurate dynamic response. Confirm that the operating environment stays within the -65°C to +200°C junction temperature limits defined by the manufacturer.

Part Context

This component belongs to the 1N47xxA series of power Zener diodes manufactured by onsemi. The series is characterized by robust planar construction and standardized axial DO-41 packaging. These diodes are widely utilized in industrial and consumer electronics for their consistent voltage regulation capabilities across a broad temperature spectrum.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Generic equivalents such as those from Taiwan Semiconductor or MCC share similar electrical parameters but require verification of mechanical dimensions and specific manufacturer tolerances before substitution.