56V 50W Zener Diode – Stud Mount DO-5 Package

High-Power 56V Zener Diode for Voltage Regulation and Circuit Protection

The NTE5278AK is a high-power 56.0 Volt 50 Watt Zener Diode designed for robust voltage regulation and over-voltage protection in industrial and high-reliability applications. Housed in a durable DO-5 stud mount package, this diode is engineered for demanding environments where consistent performance and reliable dissipation of up to 50W is required.

Key Features and Technical Specifications

• Nominal Zener (Regulating) Voltage: 56.0 V
• Maximum Power Dissipation: 50 Watts
• Package: DO-5 Stud Mount
• Configuration: Stud Cathode, Reverse Polarity
• Quantity per Package: 1
• Old NTE Part Number: NTE5278AK

Applications

• Voltage regulation for high-power power supplies
• Transient suppression in industrial circuits
• Over-voltage protection in control panels and power conversion equipment
• General-purpose use in circuits requiring precision 56V regulation

Installation and Usage Notes

• Stud-mount design ensures secure mechanical attachment and optimal thermal performance.
• Use an appropriate heatsink to maintain performance under maximum load conditions.
• Observe correct polarity: this zener diode is configured for reverse polarity operation.

Vetco Electronics supplies the 56V 50W Zener Diode (NTE5278AK) for reliable, high-power voltage regulation and circuit protection in demanding electronic systems.

This part is the equivalent replacement for the following:

1N3334AR, 1N3334BR, 1N3334R, 1N3334RA, 1N3334RB, BZY93C56 (Minor mechanical difference exists, but device will fit most applications.), ECG5278AK, ECG5278K, HZ50V56R, NTE5278AK, SK587, SK587/5278AK, TM5278AK, WEP3334R