1N4752CP/TR8

Overview

The Microchip Technology 1N4752CP/TR8 is a silicon 1-watt Zener diode in the 1N4728AP to 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 33V 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) axial-lead package. Electrical characteristics include a maximum dynamic impedance of 45 ohms at a test current of 7.5 mA, a maximum reverse current of 5 µA at 25.1 V, and a maximum regulator current of 135 mA.

Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance on nominal Zener voltage.
• Features flexible axial-lead mounting terminals for through-hole applications.
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B, requiring no dry pack.

Applications

• Voltage regulation over a broad operating current and temperature range
• General purpose voltage reference circuits
• Protection against voltage transients

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'P' suffix indicates plastic construction, while 'TR8' denotes tape and reel packaging. Confirm the 'C' suffix corresponds to the necessary ±2% voltage tolerance. Ensure the component meets RoHS compliance requirements if applicable, noting that specific environmental compliance may require an 'e3' suffix.

Selection Notes

Select this component when a 33V Zener diode with high precision is required. The ±2% tolerance makes it suitable for applications demanding tighter voltage control than standard 5% or 10% devices. Consider the 1W power dissipation rating and the thermal resistance characteristics for proper heat management in the final design.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0 watt Zener diodes. The series offers an extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates the plastic encapsulated version, which provides lower thermal resistance compared to glass-body options. Surface mount equivalents are available as SMAJ4728A to SMAJ4764A.

Replacement Considerations

Surface mount equivalents are available as SMAJ4752A or MLL4752A. For military screening levels, prefixes such as MQ, MX, MV, or MSP can be added to the base part number. Verify that any substitute maintains the same ±2% tolerance and power dissipation rating.

FAQ

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

The 'C' suffix signifies a voltage tolerance of plus or minus 2% on the nominal Zener voltage.

Is the device sensitive to electrostatic discharge?

No, the device is nonsensitive to ESD per MIL-STD-750 Method 1020.

What is the maximum forward voltage of the diode?

The maximum forward voltage is 1.2 volts at a forward current of 200 mA.