1N4752A-1

Overview

The Microchip Technology 1N4752A-1 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 33 V with a tolerance of ±5%. The device is rated for a power dissipation of 1 W and operates in the through-hole DO-204AL (DO-41) package. Key electrical parameters include a maximum reverse leakage current of 5 µA, a Zener impedance of 45 Ω at a test current of 7.5 mA, and an operating temperature range from -65 °C to +200 °C.

Feature Summary

• Provides stable voltage regulation using a unidirectional silicon junction structure.
• Features hermetic sealing within a glass passivated axial lead package for environmental protection.
• Capable of high-temperature operation suitable for demanding industrial environments.

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific manufacturer source, as the 1N4752A designation is widely used by multiple vendors including Taiwan Semiconductor, Microsemi, and ON Semiconductor. Confirm that the '-1' suffix corresponds to the intended Microchip Technology variant and check RoHS compliance status against the specific datasheet revision provided by the supplier before finalizing procurement orders.

Selection Notes

Select this component when a 33 V regulation point is required with a 1 W power rating. Ensure the circuit design accommodates the specified 45 Ω dynamic impedance and 7.5 mA test current conditions. Verify that the DO-204AL package dimensions fit the available PCB footprint and that the thermal management strategy supports the 1 W dissipation capability within the target operating temperature range.

Part Context

This part belongs to the standard 1N47xx series of axial lead Zener diodes. These components are industry-standard replacements for legacy designs. The 1N4752A-1 specifically denotes the 33 V variant within this family, manufactured by Microchip Technology, offering reliability consistent with established military and industrial grade specifications for voltage regulation tasks.

Replacement Considerations

Compatible substitutes include the MQ1N4752AUR-1E3 (Microsemi/Microchip) in MELF-2 packaging and the 1N4752ARL (NXP/Motorola) in DO-41. Verify pinout compatibility and ensure the replacement meets the same 33 V, 1 W, and ±5% tolerance requirements.

FAQ

What is the maximum operating temperature for the 1N4752A-1?

The maximum operating temperature is +200 °C.

Does the 1N4752A-1 use a hermetic package?

Yes, the device utilizes a hermetically sealed glass passivated axial lead package.