1N4750A

Overview

The SMC Diode Solutions 1N4750A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 27 V with a standard tolerance of 5%. The device is rated for a power dissipation of 1 W and operates within a temperature range from -65 °C to +200 °C. Key electrical parameters include a maximum reverse leakage current of 5 µA, a Zener impedance of 35 Ohms, and a test current of 9.5 mA. It utilizes a DO-41 axial through-hole package.

Feature Summary

• Provides stable voltage regulation using a single unidirectional silicon junction.
• Features glass passivated die construction for enhanced reliability.
• Offers low inductance characteristics suitable for general-purpose circuits.

Applications

• General-purpose voltage regulation
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the specific manufacturer designation when sourcing, as the 1N4750A is a JEDEC base part number produced by multiple vendors. Confirm that the supplied component matches the required DO-41 package and 1 W power rating. Ensure compliance with RoHS directives if lead-free variants are necessary for the assembly process. Cross-reference datasheets to confirm exact thermal resistance values.

Selection Notes

Select this component for circuits requiring a precise 27 V reference point with moderate power handling capabilities. The DO-41 package supports through-hole mounting, which is suitable for prototyping or high-reliability manual assembly. Consider the 5% voltage tolerance when designing tight regulation loops. Evaluate the thermal environment to ensure the 1 W dissipation limit is not exceeded under continuous operation.

Part Context

The 1N4750A belongs to the widely recognized 1N47xx series of 1-watt Zener diodes. This series provides a broad selection of voltage ratings from 3.3 V to 100 V. The 1N4750A specifically addresses the 27 V segment, offering a standard industry solution for power supplies and signal conditioning where robust voltage clamping is required.

Replacement Considerations

Direct substitutes include equivalent parts from other manufacturers such as onsemi, Rectron, and Taiwan Semiconductor, provided they share the 1N4750A designation. Verify that replacement units maintain the same DO-41 footprint and 1 W power rating. Check for any suffix variations that might indicate different tolerance levels or packaging formats.