High-Performance NPN Silicon Darlington Power Transistor

Reliable Power Switching for Everyday Projects

Looking for a powerful, user-friendly transistor for your high-voltage or high-current needs? Our NPN silicon Darlington power transistor with integrated base-emitter diode is engineered to deliver reliable performance, making it ideal for everyday consumers and hobbyists who need both strength and simplicity.

Key Features & Benefits

• High Voltage & Current Capability: Handle demanding applications with a maximum collector-emitter voltage of 400V and collector current up to 50A.
• Fast Switching: Integrated base-emitter speed-up diode ensures quicker, more efficient transitions.
• Heavy Duty Power Dissipation: Rated for up to 250W of power dissipation for confidence in tough tasks.
• Darlington Design: Double-transistor structure offers extremely high current gain, ideal for applications where strong amplification is needed.
• Durable TO-3 Metal Can Package: Excellent for safe heat dissipation and durability in a variety of environments.
• Easy to Implement: Designed to fit most common sockets or mounts. Perfect for repairs, upgrades, or new projects at home or in the workshop.

Typical Applications

• Power switching in appliances and hobby electronics
• Motor drivers and relay controls
• Power amplifiers and inverters
• Switching regulators

Technical Specifications

• Transistor Type: NPN Silicon Darlington
• Maximum Collector-Emitter Voltage (VCEO): 400V
• Maximum Collector Current (IC): 50A
• Power Dissipation (PD): 250W
• Package: TO-3 Metal Can
• Includes: Integrated base-emitter speed-up diode
• Part Numbers: VET99, WW99
• Old NTE Part Number: NTE99
• Quantity per Package: 1

Order Information

Each power transistor is sold individually. If the transistor is out of stock, expect a typical 1-2 week lead time. For questions about stock or suitability for your application, please call or email us our experts are happy to help!

This part is the equivalent replacement for the following:

10P1516, 10P1518, 10P1519, 2SD1287, 2SD301, 2SD643 (Minor mechanical difference exists, but device will fit most applications.), 2SD643(Q) (Minor mechanical difference exists, but device will fit most applications.), 2SD643(R) (Minor mechanical difference exists, but device will fit most applications.), CMC7010A, CMC7012A, CMC7015A, CPS7010B, CPS7012B, CPS7015B, D1287(TRANS), D301, D643 (Minor mechanical difference exists, but device will fit most applications.), D643Q (Minor mechanical difference exists, but device will fit most applications.), D643R (Minor mechanical difference exists, but device will fit most applications.), D64DV5, D64EV5, D64EV6, ECG99, FE10015, FE10015A, GE10015, GE10016, GE10022, GE10023, J10015, J10022, J10023, MJ10015, MJ10022, MJ10023, NTE99, PTC10015, PTC10022, PTC10023, PTC6022, PTC6023, PTC6073, PTC7000, PTC7001, PTC7002, PTC7003, SGSD310, SK9110, SK9110/99, ST10015, ST10022, ST10023, SV1015A, SV1015B