1N4752A

Overview

The Lumimax Optoelectronic Technology 1N4752A is a single silicon Zener diode with a nominal voltage of 33V and a tolerance of ±5%. It features a maximum power dissipation of 1W and a peak pulse power rating of 1W. The device operates within a junction temperature range up to 200°C and has a storage temperature range from -65°C to +200°C. Electrical characteristics include a maximum dynamic impedance (Zzt) of 45 Ohms, a reverse leakage current of 5 µA at 25.1V, and a forward voltage of 1.2V at 200mA. The thermal resistance from junction to ambient is 170°C/W.

Feature Summary

• Glass passivated junction construction for corrosion resistance
• Low Zener impedance and low regulation factor
• High temperature soldering capability guaranteed at 260°C/10s

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection applications

Procurement Notes

Verify the manufacturer designation as Lumimax Optoelectronic Technology against standard industry listings, as this part number is widely produced by other semiconductor manufacturers. Confirm that the specific datasheet provided matches the exact lot and revision required for your design. Ensure the DO-41 glass package dimensions align with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a 33V Zener reference is needed in a through-hole DO-41 package. The 1W power rating supports moderate current applications. Verify that the 45 Ohm impedance meets the noise and stability requirements of the circuit. The high junction temperature rating allows for operation in thermally demanding environments without derating.

Part Context

The 1N4752A belongs to the 1N47xxA series of one-watt Zener diodes. This series covers a wide voltage range from 3.3V to 75V. The 'A' suffix denotes a ±5% voltage tolerance. These diodes are standardized JEDEC devices commonly used in general-purpose electronics for stable voltage clamping and regulation tasks.

Replacement Considerations

Standard cross-reference parts include 1N4752A from manufacturers such as Vishay, onsemi, and Taiwan Semiconductor. Ensure replacement parts maintain the same DO-41 package, 1W power rating, and 33V ±5% specification.