1N4734AP/TR12

Overview

The Microchip Technology 1N4734AP/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 with a nominal Zener voltage of 5.6 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 5 Ohms at a test current of 45 mA. It includes a tape and reel option for automated assembly.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B with no dry pack required

Applications

• Voltage regulation circuits requiring 5.6 V reference
• Power supply protection against overvoltage conditions
• General purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific suffix configuration when ordering, as the TR suffix indicates tape and reel packaging while other prefixes may denote military screening levels. Confirm RoHS compliance status if required, as it depends on the presence of the e3 suffix. Ensure the procurement documentation matches the exact part number to distinguish between plastic and glass body options or different tolerance grades.

Selection Notes

Select this component for applications requiring a 5.6 V Zener voltage with ±5% tolerance and 1.0 W power dissipation capability. Consider the plastic DO-41 package for lower thermal resistance compared to glass-body alternatives. Verify that the operating environment stays within the specified -65°C to +150°C range and that the circuit design accommodates the 5 Ohm dynamic impedance characteristics.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers an extensive voltage selection from 3.3 to 100 volts. The AP designation specifically identifies the plastic encapsulated version, which provides improved thermal performance over the glass-body G suffix variants within the same JEDEC numbering system.

Replacement Considerations

Equivalent parts include the 1N4734A (glass body), CDLL4734A/TR (surface mount MELF), and MSP1N4734AUR/TR (hermetic sealed). Verify package compatibility and tolerance requirements before substitution.