1N4751CP/TR8

Overview

The Microchip Technology 1N4751CP/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi's Scottsdale Division. It provides voltage regulation with a nominal Zener voltage of 30V 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 a plastic DO-41 (DO-204AL) package. Electrical characteristics include a test current of 8.5 mA, a maximum dynamic impedance of 40 ohms at the test current, and a maximum reverse current of 5 µA at a test voltage of 22.8 V.

Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance on nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body for moisture classification Level 1.
• Offers flexible axial-lead mounting terminals suitable for through-hole applications.
• Includes RoHS compliant options available with an 'e3' suffix designation.

Applications

• Voltage regulation over a broad operating current and temperature range
• General purpose clipping and clamping circuits
• Reference voltage sources in electronic circuits

Procurement Notes

Verify that the ordering suffix matches the required specifications exactly. The 'P' suffix indicates plastic construction, while 'TR' denotes tape and reel packaging. Confirm the presence of the 'e3' suffix if RoHS compliance is mandatory for the assembly process. Ensure the component meets the specific JEDEC registration standards associated with the 1N4751A series before procurement.

Selection Notes

Select this component when a 30V Zener voltage with high precision is required. The ±2% tolerance makes it suitable for applications demanding tighter voltage control than standard 5% or 10% variants. Consider the plastic package's lower thermal resistance compared to glass-body options. Verify that the 1.0-watt power dissipation rating aligns with the circuit's thermal management capabilities.

Part Context

This part belongs to the widely used 1N47xx series of silicon Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The 1N4751 variant specifically targets the 30V regulation point. The 'C' suffix differentiates it from the standard 'A' suffix (±5%) and 'D' suffix (±1%) variants within the same power and package family.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4751A parts with matching electrical ratings. For tighter tolerances, consider 1N4751B or 1N4751C equivalents from other suppliers. Surface mount replacements are available as SMAJ4751A or MLL4751A series devices, subject to factory consultation.