130V 50W Stud Mount Zener Diode – Reverse Polarity

Reliable High Power Voltage Regulation

The NTE5289AK is a stud mount Zener diode engineered for high-power voltage regulation and transient suppression in demanding applications. With a nominal regulating voltage of 130.0 volts and a robust 50-watt power rating, this diode delivers stable performance and effective thermal management in environments with elevated current and voltage requirements.

Technical Specifications

• Nominal Zener Voltage: 130.0V
• Power Rating: 50W continuous
• Polarity: Reverse (cathode at stud)
• Mounting Style: Stud mount for secure mechanical connection and optimal heat dissipation
• Package: DO-5 (DO-203AB)
• Quantity Per Package: 1
• Original Part Number: NTE5289AK

Applications and Use Cases

Ideal for use in power supply regulation, crowbar circuits, and transient voltage suppression, this 130V 50W Zener diode ensures precise voltage clamping and over-voltage protection for industrial equipment, communications gear, and laboratory instrumentation. The stud mount design provides a low thermal resistance path, making it suitable for continuous operation in high-power circuits.

Installation and Operation

Mount the diode securely to a heat sink or grounded chassis to ensure proper thermal performance. Observe correct polarity—cathode is connected via the stud. Solder the anode lead according to your circuit layout. For reliable voltage regulation and maximum lifecycle, operate within the specified power and voltage ratings.

Key Features

• Nominal Zener voltage: 130V for accurate regulation
• 50W stud mount construction for high power handling
• Reverse polarity for flexible circuit integration
• Designed for industrial and high-reliability applications

This part is the equivalent replacement for the following:

1N3344R, 1N3344RA, 1N3344RB, 50T130R, 50T130RA, 50T130RB, ECG5289AK, ECG5289K, HZ50V130R, NTE5289AK, SK609, SK609/5289AK, TM5289AK