1N4729AP/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N4729AP/TR12 is a silicon 1.0-watt Zener diode in the JEDEC registered 1N4728A to 1N4764A series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation at a nominal Zener voltage of 3.6 V with 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 10 Ohms at a test current of 69 mA. It includes a tape and reel option indicated by the TR suffix.

Single Zener Diodes 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

Single Zener Diodes Applications

• Voltage stabilization circuits
• Waveform clipping applications
• Reference voltage generation in power supplies

Single Zener Diodes Procurement Notes

Verify that the part number matches the specific manufacturer designation for Microsemi Corporation. Confirm the presence of the 'P' suffix indicates plastic encapsulation and the 'TR' suffix confirms tape and reel packaging. Ensure compliance requirements align with project specifications, as RoHS status depends on the specific ordering suffix.

Single Zener Diodes Selection Notes

Select this component when a 3.6 V regulation point is required with a 5% tolerance. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1.0-watt power dissipation rating and the specific thermal resistance values for lead-mounted versus board-mounted configurations during circuit design.

Single Zener Diodes Part Context

This component belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 100 volts. These devices are JEDEC registered and designed for general-purpose voltage regulation tasks requiring reliable performance in standard industrial environments.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available as SMAJ4729A or MLL4729A. Other manufacturers produce direct JEDEC replacements such as 1N4729A. Verify pinout compatibility and thermal characteristics when substituting.