1N4756PE3/TR12

Overview

The Microchip Technology 1N4756PE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 47 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 80 Ohms at a test current of 5.5 mA. It includes RoHS compliance indicated by the 'e3' suffix and tape-and-reel packaging specified by the 'TR12' suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 1.0-watt power dissipation
• Reference voltage sources in electronic systems
• Overvoltage protection components in signal paths

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'e3' confirms RoHS compliance, and 'TR12' denotes tape-and-reel packaging. Confirm the manufacturer source as Microsemi or its successor entity Microchip Technology to ensure authenticity. Cross-reference the part number against official datasheets to validate electrical characteristics before procurement.

Selection Notes

Select this component when a 47 V Zener voltage with ±5% tolerance is required in an axial-lead package. Ensure the application supports a maximum power dissipation of 1.0 watt and operates within the -65°C to +150°C temperature range. Consider the thermal resistance values if derating is necessary for high ambient temperatures or specific PCB mounting conditions.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of silicon Zener diodes. The series offers extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates plastic encapsulation, which provides lower thermal resistance compared to glass-body options. The 'e3' suffix identifies RoHS compliant devices available from Microsemi/Microchip Technology.

Replacement Considerations

Equivalent parts include other 1N4756A variants with matching voltage and power ratings. Surface mount equivalents are available as SMAJ4756A or MLL4756A. Verify pin compatibility and thermal performance when substituting with different package types or manufacturers.