1N4734CP/TR12

Single Zener Diodes Overview

The Microchip Technology 1N4734CP/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP to 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 5.6V and a tight tolerance of +/- 2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 5 Ohms at a test current of 45 mA. It is supplied in tape and reel packaging, denoted by the 'TR12' suffix.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance on nominal Zener voltage.
• Features flexible axial-lead mounting terminals for through-hole integration.
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Classified as Level 1 moisture sensitivity requiring no dry pack.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in electronic circuits
• Surge protection and clamping applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the 1N4734 series was originally JEDEC registered under Microsemi. Confirm that the 'P' suffix denotes the plastic encapsulation and the 'C' suffix confirms the 2% voltage tolerance. Ensure the 'TR12' suffix matches the required tape and reel packaging specifications for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component when a 5.6V reference with tighter than standard 5% tolerance is required. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1W power dissipation rating and the specific thermal derating curves if operating near maximum temperatures or on FR4 PCBs.

Single Zener Diodes Part Context

This part belongs to the popular 1N4728A through 1N4764A series of 1.0-watt Zener diodes. The series covers an extensive voltage selection from 3.3V to 100V. While originally associated with Microsemi, these components are now often distributed or manufactured under the Microchip Technology brand following industry acquisitions.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N4734A equivalents with matching 5.6V and 1W ratings. For tighter tolerances, verify availability of 1N4734C variants. Surface mount equivalents such as SMAJ4734A or MLL4734A may be considered if board space permits a package change.