1N4735AP/TR12

Overview

The Microchip Technology 1N4735AP/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 6.2 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 2 Ohms at a test current of 41 mA. The TR12 suffix indicates tape and reel packaging compliant with EIA-296 standards.

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
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits
• Power supply protection
• Reference voltage generation

Procurement Notes

Verify the specific manufacturer origin, as this part number appears in catalogs from both Microsemi and Microchip Technology. Confirm that the TR12 suffix correctly denotes the required tape and reel packaging format. Ensure compliance requirements match the intended application, noting that standard versions may not be RoHS compliant unless specified by an e3 suffix.

Selection Notes

Select this component when a 6.2 V reference with ±5% tolerance is required in a 1 W power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Verify that the operating environment stays within the -65°C to +150°C range and that the lead length allows for proper heat dissipation according to the derating curves.

Part Context

This device belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0 watt Zener diodes. The 'P' suffix designates the plastic encapsulated construction, while the 'TR' suffix indicates tape and reel packaging. This series provides extensive voltage selection from 3.3 to 100 volts with standard 5% tolerances for the 'A' suffix variants.

Replacement Considerations

Equivalent parts include 1N4735A, 1N4735AP, and 1N4735AT26R. Surface mount equivalents are available as SMAJ4735A or MLL4735A.