1N4736P/TR12

Overview

The Microchip Technology 1N4736P/TR12 is a silicon 1.0-watt Zener diode housed in a plastic DO-41 axial lead package. It provides voltage regulation with a nominal Zener voltage of 6.8 V and a standard tolerance of ±10%. The device operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 10 µA at the test voltage and a dynamic impedance of 3.5 Ω at a test current of 37 mA. It is supplied in tape and reel packaging.

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

Applications

• Voltage regulation circuits
• Reference voltage sources
• Surge protection devices

Procurement Notes

Verify that the ordering suffix matches the required specifications. Confirm the 'TR' designation indicates tape and reel packaging and the '12' identifier aligns with the specific reel configuration. Ensure the component meets RoHS compliance requirements if applicable to the assembly process. Cross-reference the manufacturer part number against official datasheets to validate electrical parameters before procurement.

Selection Notes

Select this component when a 6.8 V reference with ±10% tolerance is required in a 1 W power dissipation package. Consider the plastic DO-41 construction for lower thermal resistance compared to glass-body options. Verify that the operating environment stays within the specified -65°C to +150°C range and that the 3.5 Ω dynamic impedance meets circuit stability requirements.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers an extensive voltage selection from 3.3 to 100 volts. These plastic encapsulated devices are moisture classified as Level 1 and do not require dry pack storage. They are JEDEC registered and available in various screening levels.

Replacement Considerations

Equivalent parts include other 1N4736 variants such as 1N4736A or 1N4736G, provided the package type and tolerance match the design requirements. Surface mount equivalents like SMAJ4736A are available but require different mounting considerations.