1N4759A

Overview

The SMC Diode Solutions 1N4759A is a silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 62 V with a tolerance of 5%. The device is rated for a power dissipation of 1 W and operates within a junction temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 125 Ω at a test current of 4 mA.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• Double slug type design for thermal stability
• Oxide passivated die for enhanced reliability

Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Procurement Notes

Verify the manufacturer designation, as SMC Diode Solutions may not be the primary producer of this specific legacy part number compared to other manufacturers like Vishay or Central Semiconductor. Confirm RoHS compliance status and package type (DO-41) against the specific datasheet provided by the supplier to ensure compatibility with existing designs.

Selection Notes

Select this component when a stable 62 V reference is required in through-hole assemblies. Ensure the circuit can handle the 1 W power dissipation and that the operating environment stays within the specified temperature limits. Verify lead material availability if tin/lead restrictions apply.

Part Context

This component belongs to the standard 1W DO-41 Zener diode family, widely used in industrial electronics. While similar parts exist from various vendors, the 1N4759A specifically denotes the 62 V variant within this high-reliability series known for hermetic sealing.

Replacement Considerations

Direct substitutes include the Vishay SML4759A-E3/61 and Central Semiconductor 1N4759A BK TIN/LEAD. Verify pinout and package dimensions before substitution.