1N4756PE3/TR8

Overview

The Microchip Technology 1N4756PE3/TR8 is a silicon 1.0-watt Zener diode 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 features a maximum dynamic impedance of 80 Ohms at a test current of 5.5 mA, with a maximum reverse leakage current of 5 µA at 35.8 V. It operates within a temperature range of -65°C to +150°C and includes RoHS compliance indicated by the e3 suffix.

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 meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 47 V reference
• Power supply protection against overvoltage conditions
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the ordering suffix TR8 corresponds to tape and reel packaging as specified in the datasheet. Confirm the manufacturer designation aligns with Microsemi or Microchip Technology records. Ensure the component meets RoHS requirements via the e3 suffix. Cross-reference the part number with official distributor catalogs to validate availability and authenticity before procurement.

Selection Notes

Select this component when a 47 V Zener voltage with ±5% tolerance is required for axial-lead implementations. Consider the 1.0 W power dissipation rating and thermal resistance characteristics for heat management. Verify compatibility with the target circuit's operating temperature range of -65°C to +150°C. Compare dynamic impedance specifications against noise sensitivity requirements in the application design.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes manufactured by Microsemi Scottsdale Division. The series offers an extensive voltage selection from 3.3 to 100 volts. The plastic encapsulated version provides lower thermal resistance compared to glass-body options while maintaining JEDEC registration standards for reliability and interchangeability.

Replacement Considerations

Consult the factory for surface mount equivalents such as SMAJ4756A or MLL4756A. Verify pinout compatibility and thermal performance when substituting with other manufacturers' 1N4756 variants.