1N4744CPE3/TR8

Overview

The Microchip Technology 1N4744CPE3/TR8 is a silicon 1.0-watt Zener diode housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 15 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, denoted by the 'e3' suffix. It is supplied in tape and reel packaging for automated assembly.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Offers flexible axial-lead mounting terminals suitable for through-hole applications.
• Includes RoHS-compliant solderable terminals with annealed matte-tin plating.

Applications

• Voltage regulation circuits requiring high precision.
• Power supply reference voltage generation.
• Over-voltage protection in electronic systems.

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'e3' confirms RoHS compliance, and 'TR' specifies tape and reel packaging. Confirm the 'C' suffix corresponds to the necessary ±2% voltage tolerance. Ensure the component meets the specific thermal and electrical requirements for the intended application environment before procurement.

Selection Notes

Select this component when a 15 V Zener voltage with ±2% tolerance is required in a 1-watt power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the operating temperature range and surge current capabilities relative to the circuit design constraints.

Part Context

This part belongs to the 1N4728AP thru 1N4764AP series of silicon 1-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The 'C' suffix denotes a tighter 2% tolerance compared to the standard 'A' suffix (5%) or no suffix (10%).

Replacement Considerations

Compatible substitutes include other 1N4744 variants with matching voltage and tolerance, such as 1N4744A (5% tolerance) or 1N4744D (1% tolerance), provided the package and power ratings are compatible. Verify equivalent electrical characteristics and mechanical dimensions for direct replacement.

FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix indicates a Zener voltage tolerance of plus or minus 2%.

Is the device RoHS compliant?

Yes, the 'e3' suffix in the part number signifies that the device is RoHS compliant with annealed matte-tin plating.

What is the maximum power dissipation at 25°C?

The maximum power dissipation is 1.0 watts at an ambient temperature of 25°C.