1N4756A

Overview

The Lumimax Optoelectronic Technology 1N4756A is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 47V with a tolerance of ±5%. The device operates within a power dissipation rating of 1W and maintains a maximum Zener impedance of 80 Ohms. Electrical characteristics are specified at a test current, with a maximum reverse leakage current of 5 µA at 35.8V. The component utilizes a DO-41 glass package suitable for through-hole mounting.

Feature Summary

• Glass passivated junction construction
• Low Zener impedance for stable regulation
• High temperature soldering capability

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the manufacturer designation as Lumimax Optoelectronic Technology against standard industry listings. Confirm that the DO-41 package corresponds to the specific glass body construction detailed in the provided datasheet. Ensure compliance with the stated thermal resistance and operating temperature ranges for the intended application environment.

Selection Notes

Select this component when a 47V reference is required with tight tolerance. Consider the 1W power dissipation limit for thermal management. Verify that the DO-41 axial lead form factor fits the PCB layout constraints. Check if the glass passivation meets environmental requirements.

Part Context

This part belongs to the 1N47xxA series of Zener diodes. The series covers a wide voltage range from 3.3V to 75V. All devices share common mechanical data including JEDEC DO-41 packaging and plated axial leads. The suffix 'A' consistently denotes a ±5% voltage tolerance across the series.

Replacement Considerations

Standard equivalents include the 1N4756A from manufacturers such as onsemi, Vishay, and Taiwan Semiconductor. Verify pinout compatibility and ensure the replacement part meets or exceeds the 1W power rating and 47V specification.