1N4758AP-TP

Overview

The MCC 1N4758AP-TP is a discontinued single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 56 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and utilizes an axial DO-41G through-hole package. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 42.6 V, a forward voltage drop of 1.2 V at 200 mA, and a maximum Zener impedance of 110 Ohms. It operates within a temperature range of -65°C to 200°C.

Feature Summary

• Provides stable voltage regulation with a nominal 56 V Zener breakdown.
• Supports high thermal stability with an operating junction temperature up to 200°C.
• Features low reverse leakage current for efficient standby performance.
• Constructed in a robust glass axial leaded package for through-hole mounting.

Applications

• Voltage reference circuits requiring precise 56 V levels.
• Overvoltage protection stages in power supply inputs.
• Clamping applications in signal conditioning paths.

Procurement Notes

Verify component authenticity carefully as the 1N4758AP-TP is officially obsolete and no longer manufactured by Micro Commercial Components. Sourcing should focus on verified surplus distributors or authorized secondary market suppliers. Confirm that received units match the original datasheet specifications, particularly regarding package integrity and marking accuracy, to ensure reliability in critical designs.

Selection Notes

Select this component only if the specific 56 V Zener voltage and 1 W power rating align with the circuit requirements. Consider the DO-41G package dimensions for PCB layout compatibility. Evaluate alternative active parts if long-term supply continuity is required, as the original part is end-of-life. Ensure the application environment stays within the specified -65°C to 200°C operating range.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes produced by Micro Commercial Components. It shares the same electrical profile as the generic 1N4758A but includes the 'TP' suffix indicating specific manufacturing or packaging variations. The series is widely recognized for general-purpose voltage regulation tasks in industrial and consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers include 1N4758AP-TP from MCC and 1N4758A-T50A from onsemi. Other equivalents such as 1N5087 from Microchip Technology are available but may differ in package style or compliance standards. Verify pinout and thermal characteristics before substitution.