1N4758P/TR8

Overview

The Microchip Technology 1N4758P/TR8 is a silicon Zener diode with a nominal voltage of 56 V and a 5% tolerance. It operates in a DO-41 axial lead package, dissipating up to 1.0 W at 25°C. The device features a maximum reverse current of 5 µA and a dynamic impedance of 110 Ω at the test current of 4.5 mA. It withstands surge currents up to 2000 mA and functions within a temperature range of -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation circuits
• Overvoltage protection systems
• Reference voltage generation

Procurement Notes

Verify the specific manufacturer origin, as the 1N4758P designation originates from Microsemi, now part of Microchip Technology. Confirm RoHS compliance status by checking for the e3 suffix if required. Ensure the TR suffix matches the tape and reel packaging requirement for automated assembly processes.

Selection Notes

Select this component when a 56 V reference is needed in an axial package. The P suffix indicates plastic construction, offering lower thermal resistance compared to glass-body options. Verify that the 110 Ω dynamic impedance meets the circuit requirements for noise-sensitive applications.

Part Context

This device belongs to the 1N4728AP through 1N4764AP series of 1-watt Zener diodes. The series provides extensive voltage selection from 3.3 to 100 volts. These components are JEDEC registered and designed for industrial and commercial applications requiring reliable voltage regulation.

Replacement Considerations

Compatible substitutes include other 1N4758 variants such as 1N4758G or 1N4758A, provided the package type and electrical tolerances align with the design specifications.