1N4756A_T50A

Overview

The onsemi 1N4756A_T50A is a silicon planar Zener diode designed for voltage regulation applications. It operates within the DO-41 axial through-hole package and provides a nominal Zener voltage of 47 V with a tolerance of ±5%. The device dissipates up to 1 W of power at a lead temperature of 50°C or less, requiring a derating factor of 6.67 mW/°C above this threshold. Electrical characteristics include a maximum dynamic impedance of 80 Ω at the test current of 5.5 mA and a maximum reverse leakage current of 5 µA at 35.8 V. The component supports an operating and storage temperature range from -65°C to +200°C.

Feature Summary

• Utilizes double slug type construction with metallurgically bonded die for robust performance
• Features hermetically sealed glass encapsulation ensuring environmental stability
• Provides oxide passivated die protection against surface contamination

Applications

• Voltage reference circuits in precision measurement equipment
• Overvoltage protection stages in power supply inputs
• Clamping applications in signal conditioning networks

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration before procurement. Confirm that the component revision aligns with the latest datasheet specifications. Ensure compliance with RoHS directives if applicable to the target assembly process. Validate that the manufacturer source is authorized to prevent counterfeit components.

Selection Notes

Select this component when a stable 47 V reference is required in high-temperature environments up to 200°C. The DO-41 package facilitates manual insertion and standard automated placement. Consider the 80 Ω impedance limit for low-noise requirements. Evaluate thermal management needs based on the 1 W dissipation rating and ambient conditions.

Part Context

This part belongs to the 1N4728A through 1N4758A series of one-watt Zener diodes manufactured by onsemi. The series covers a wide voltage range from 3.3 V to 56 V. All devices share identical mechanical dimensions and mounting styles while varying in electrical parameters such as Zener voltage and impedance. The T50A suffix typically denotes a specific bulk packaging format.

Replacement Considerations

Compatible substitutes include the 1N4756A from other manufacturers such as Microchip Technology or Fairchild Semiconductor. Verify that replacement parts maintain the same DO-41 footprint and 47 V nominal voltage. Check for equivalent impedance and leakage current specifications to ensure circuit compatibility.