NTE284 NPN Silicon Power Transistor TO-3 Metal Can USA Semiconductor
$19.99
The NTE284 is a rugged NPN silicon power transistor housed in the classic TO-3 metal package and designed for demanding industrial, laboratory, communications, and power supply applications. Commonly used as a replacement for the 2N3442 family of transistors, the NTE284 is well suited for high-voltage linear regulator circuits, series pass regulators, industrial control equipment, audio amplifiers, and vintage test equipment repairs.
Its all-metal TO-3 construction provides excellent thermal performance and long-term reliability, making it a popular choice among technicians restoring older electronic equipment. The NTE284 remains a sought-after replacement device for maintaining legacy systems where original semiconductors may no longer be readily available.
This vintage semiconductor is ideal for electronics repair professionals, restorers, experimenters, and collectors seeking genuine TO-3 power devices for restoration, maintenance, or replacement applications.
Origin Tracker
Obsolete Stock
Legacy or discontinued stock no longer in normal production flow. Future supply may be limited.
Pipeline quantities are informational and may change after arrival, inspection, sorting, testing, or donor teardown.
Compatible Radios / Boards
Linear Power Supplies
Audio Amplifiers
Industrial Controls
Series Pass Regulators
Laboratory Equipment
Communications Equipment
Bench Test Equipment
High Voltage Driver Circuits
RF Boneyard Bench Notes
Measured Parameters
hFE: 54
IC: 5.00 mA
VBE @ IB = 1.00 mA: 0.541 V
VBE @ IB = 5.00 mA: 0.595 V
VCE(sat): 0.021 V
Saturation Test Current (IC): 5.00 mA
Saturation Base Current (IB): 1.00 mA
ICE Leakage: 0.000 mA
Bench Assessment
Bench verified NTE284 NPN silicon power transistor in TO-3 metal can package. Measured hFE 54 at IC 5.00 mA, VBE 0.541 V at IB 1.00 mA, VBE 0.595 V at IB 5.00 mA, VCE(sat) 0.021 V at IC 5.00 mA / IB 1.00 mA, and ICE leakage 0.000 mA. Device shows strong gain, normal silicon junction behavior, clean saturation response, and no measurable leakage during testing.
Bench Status: Bench Verified
Ask the bench before you buy.
Post a question about this part
Login or create an account to ask a product question. This helps keep spam out of the RF Boneyard bench.
Login to AskAnswered Questions
No answered questions yet. Be the first to ask the bench.