1N4734P/TR8

Overview

The Microchip Technology 1N4734P/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi. It provides voltage regulation with a nominal Zener voltage of 5.6 V and a standard tolerance of ±5%. The device features a plastic DO-41 (DO-204AL) axial-lead package and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 5 Ohms at a test current of 45 mA, a maximum reverse current of 10 µA at 1 V, and a forward voltage of 1.2 V maximum at 200 mA.

Feature Summary

• Plastic molded epoxy body construction providing lower thermal resistance compared to glass-body options.
• Moisture classification Level 1 per IPC/JEDEC J-STD-020B, eliminating the need for dry pack storage.
• Flexible axial-lead mounting terminals suitable for through-hole applications.
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020.

Applications

• Voltage regulation over broad operating current and temperature ranges.
• Stabilizing circuits requiring precise voltage reference.
• Clipping circuits for signal conditioning.

Procurement Notes

Verify component authenticity and datasheet revision status directly with the manufacturer or authorized distributors. Confirm that the specific ordering suffix matches the required plastic package and tape-and-reel configuration. Ensure compliance with project-specific material restrictions and environmental standards prior to procurement.

Selection Notes

Select this component when a 5.6 V regulation point is required with ±5% tolerance. The plastic DO-41 package offers improved thermal performance relative to glass equivalents. Verify that the 1.0 W power dissipation rating and the specified thermal resistance values align with the intended circuit's heat management requirements.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0 Watt Zener Diodes. The 'P' suffix designates the plastic encapsulated variant, while the 'TR' suffix indicates tape-and-reel packaging. The series covers an extensive voltage selection from 3.3 to 100 volts.

Replacement Considerations

Surface mount equivalents are available as SMAJ4734A or MLL4734A. Glass-body versions exist under the same base number with a 'G' suffix. Military screening levels are accessible via MQ, MX, MV, or MSP prefixes.