15.0 Volt 50 Watt Zener Diode – Stud Mount, Reverse Polarity

Reliable High-Power Voltage Regulation with 15V 50W Zener Diode

The NTE5257AK is a high-power zener diode designed for rugged voltage regulation and circuit protection in demanding environments. Built with a robust stud mount DO-5 package and rated for 50 Watts of power dissipation, this reverse polarity zener diode offers stable performance where reliability is critical.

Technical Specifications

• Nominal Regulating Voltage (Vz): 15.0 Volts
• Power Dissipation: 50 Watts
• Package Type: DO-5, Stud Mount
• Polarity: Reverse (cathode to case)
• Quantity per Package: 1
• Part Number: NTE5257AK

Typical Applications

Engineered for professional use, this 15.0V 50W zener diode is ideally suited for voltage regulation, overvoltage protection, and clamping in power supplies, industrial controls, and other high-power circuits. The stud mount design ensures secure mechanical and thermal connection for efficient heat dissipation.

Usage and Mounting Instructions

• Mount the diode using the stud for optimal heat transfer and electrical connection.
• Observe reverse polarity configuration: cathode is connected to the case.
• Ensure adequate heatsinking for full 50W power rating in continuous operation.

This part is the equivalent replacement for the following:

1N3314AR, 1N3314BR, 1N3314R, 1N3314RA, 1N3314RB, 50T15R, 50T15RA, 50T15RB, BZY93C15 (Minor mechanical difference exists, but device will fit most applications.), ECG5257AK, ECG5257K, NTE5257AK, SK545, SK545/5257AK, TM5257AK, WEP3314R