1N4734P/TR12

Overview

The Microchip Technology 1N4734P/TR12 is a silicon 1.0-watt Zener diode in the JEDEC registered 1N4728A to 1N4764A series. It provides voltage regulation with a nominal Zener voltage of 5.6V and a standard tolerance of plus or minus 5%. The device utilizes a plastic encapsulated DO-41 (DO-204AL) axial-lead package, offering lower thermal resistance compared to glass-body options. Electrical characteristics include a maximum dynamic impedance of 5 Ohms at a test current of 45 mA and a maximum reverse current of 10 µA. The component operates within an ambient 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 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 5.6V reference
• Power supply protection against overvoltage conditions
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific ordering suffix requirements directly with the manufacturer or authorized distributors to ensure correct packaging configuration. Confirm that the requested part number aligns with the plastic construction specifications and tape-and-reel availability details provided in the official datasheet documentation.

Selection Notes

Select this component when a 1-watt power dissipation rating and 5.6V nominal Zener voltage are required. The plastic DO-41 package offers lower thermal resistance than glass alternatives. Ensure the application environment remains within the specified -65°C to +150°C operating temperature range and accounts for the 5% voltage tolerance.

Part Context

This device belongs to the popular 1N4728AP through 1N4764AP series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage selection from 3.3 to 100 volts. The 'P' suffix specifically designates the plastic encapsulated construction variant available in this product line.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4734A devices in the DO-41 package. For surface mount needs, consider SMAJ4734A or MLL4734A equivalents as listed in the source documentation.