1N4740CE3/TR13

Overview

The Microchip Technology 1N4740CE3/TR13 is a silicon 1.0-watt Zener diode in the 1N4728A through 1N4764A series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 10 V and a tight tolerance of ±2%, indicated by the 'C' suffix. 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 precise voltage regulation with a standard ±2% tolerance for stable reference applications
• Utilizes void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability standards
• Offers flexible axial-lead mounting terminals suitable for through-hole PCB integration
• Ensures moisture classification Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack storage

Applications

• Voltage regulation circuits requiring stable DC references
• Protection against overvoltage transients in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify that the ordering suffix includes both 'e3' for RoHS compliance and 'TR13' for tape and reel packaging. Confirm the 'C' suffix is present to ensure the required ±2% voltage tolerance rather than the standard 5%. Check manufacturer documentation for specific military screening prefixes if higher reliability levels are needed for the application environment.

Selection Notes

Select this component when a 10 V reference with high precision is required in an axial package. The 1 W power dissipation rating supports steady-state operation at lead temperatures below 105°C. Ensure the circuit design accounts for the dynamic impedance characteristics at the specified test current to maintain regulation accuracy under varying load conditions.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of 1 Watt Zener Diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The 'e3' suffix denotes RoHS compliant devices available with tin-plated terminals, while the 'P' suffix indicates the plastic encapsulated construction used in this specific model.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4740A variants with matching 10 V and 1 W ratings. For tighter tolerances, verify compatibility with 1N4740C equivalents. Surface mount alternatives such as SMAJ4740A or MLL4740A are available but require different footprint considerations.