1N4740E3/TR13

Overview

The Microchip Technology 1N4740E3/TR13 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 at a nominal Zener voltage of 10 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features RoHS-compliant annealed matte-tin plating on its terminals.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard PCB integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• General-purpose voltage regulation circuits
• Power supply reference voltage generation
• Overvoltage protection in low-power electronic systems

Procurement Notes

Verify that the ordering suffix TR13 corresponds to the tape and reel packaging option described in the datasheet as adding a TR suffix. Confirm the e3 suffix indicates RoHS compliance with annealed matte-tin plating. Ensure the specific part number matches the JEDEC registered 1N4740A designation for the 10 V variant within the specified plastic encapsulated series.

Selection Notes

Select this component when a 10 V regulated reference is required in an axial-lead package. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the ±5% tolerance if tighter precision is not needed. Verify that the 1.0 W power dissipation rating meets the thermal requirements of the target application environment.

Part Context

This component belongs to the widely used 1N47xx series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage range from 3.3 V to 100 V. The 1N4740 variant specifically targets the 10 V regulation point, serving as a standard industry reference component for basic circuit design and power management applications.

Replacement Considerations

Surface mount equivalents are available as SMAJ4740A or MLL4740A. Glass-body versions exist under the G suffix designation. Military screening levels can be obtained by adding MQ, MX, MV, or MSP prefixes to the base part number.