18.0 Volt 50 Watt Stud Mount Zener Diode — Reverse Polarity

High-Power Zener Regulation at 18V

The NTE5260AK is a high-power, stud mount Zener diode rated for a nominal regulating voltage of 18.0 volts and a power dissipation of up to 50 watts. Engineered for robust performance in voltage regulation and overvoltage protection circuits, this reverse-polarity Zener diode is well-suited for high-reliability industrial and commercial applications where stable operation and thermal management are essential.

Key Technical Specifications

• Zener Voltage (V_Z): 18.0V nominal regulating voltage
• Power Dissipation: 50 watts (stud mount construction for improved heat dissipation)
• Polarity: Reverse — cathode to stud
• Package: DO-5 stud mount
• Quantity per Package: 1

Typical Applications

• Industrial power supplies
• Series and shunt voltage regulation
• Overvoltage and surge protection
• Clipping and clamping circuits

Reliable Thermal Management

The stud mount design allows for efficient thermal transfer when properly installed to a heatsink or chassis, ensuring reliable operation even at high power levels. Reverse polarity orientation (cathode to stud) must be observed for correct circuit integration.

Part Number: NTE5260AK

This part is the equivalent replacement for the following:

1N3317AR, 1N3317BR, 1N3317R, 1N3317RA, 1N3317RB, 50T18R, 50T18RA, 50T18RB, BZY93C18 (Minor mechanical difference exists, but device will fit most applications.), ECG5260AK, ECG5260K, HZ50V18R, NTE5260AK, SK551, SK551/5260AK, TM5260AK, WEP3317R