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Part No MJL4281A
Manufacturer ON Semiconductor
Catalog Transistors (BJT) - Single
Description Complementary NPN-PNP Silicon Power Bipolar Transistors | TRANS NPN 350V 15A TO264
Rohs State Need to verify

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Pricing & Ordering $3.2581 Historical reference price : is the price that a customer announces that it is willing to pay for this component in the previous period, only for reference.
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Availability: 30 pieces
MOQ: 9 pcs
Order Increment : 1 pcs
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Products specifications

Categories Discrete Semiconductor Products
Manufacturer ON Semiconductor
Packaging Tube
Status Obsolete
Transistor Type NPN
Current - Collector (Ic) (Maximum) 15A
Voltage - Collector Emitter Breakdown (Maximum) 350V
Vce Saturation (Maximum) at Ib, Ic 1V at 800mA, 8A
Current - Collector Cutoff (Maximum) 100μA
DC Current Gain (hFE) (Minimum) at Ic, Vce 80 at 5A, 5V
Maximum Power 230W
Frequency - Transition 35MHz
Temperature Range - Operating -65°C ~ 150°C
Mounting Style Through Hole
Manufacturer Package TO-264-3, TO-264AA
Supplier Device Package TO-264
Manufacturer Pack Quantity 25
MSL Level 1 (Unlimited)
Win Source Part Number 1223797-MJL4281A
Manufacturer Homepage
Popularity Medium
Fake Threat In the Open Market 34 pct.
Supply and Demand Status Limited


The MJL4281A from ON Semiconductor is a high-power, high-performance audio power transistor designed to deliver premium sound quality for professional audio amplification systems. This NPN bipolar power transistor is specifically engineered to meet the rigorous demands of high-fidelity audio applications, offering both reliability and efficiency.

With its advanced design, the MJL4281A provides an outstanding combination of features that make it an ideal choice for audio enthusiasts and professionals alike. It boasts a high collector-emitter breakdown voltage of 350V, which ensures stable operation under high voltage conditions. Additionally, the transistor has a high collector current rating of up to 15A, allowing it to handle significant power levels without performance degradation.

The MJL4281A is also characterized by a high power dissipation of 200W, which is essential for maintaining thermal stability and longevity in high-power audio amplifiers. Its excellent gain linearity ensures minimal distortion across the audio frequency spectrum, providing a clear and accurate sound reproduction that audiophiles seek.

One of the key features of this transistor is its high transition frequency (fT) of 4MHz, which contributes to its wide bandwidth and fast switching capabilities. This makes the MJL4281A suitable not only for audio amplifiers but also for high-speed switching applications where performance is critical.

ON Semiconductor has designed the MJL4281A with a robust package that ensures reliable operation even under harsh conditions. The transistor comes in a TO-264 package, which allows for efficient heat dissipation and ease of mounting onto heat sinks, further enhancing its thermal performance and durability.

In summary, the MJL4281A from ON Semiconductor is a top-tier audio power transistor that combines high voltage and current handling capabilities with fast switching speeds and excellent thermal performance. Its ability to produce high-quality sound with minimal distortion makes it a preferred choice for high-end audio systems and professional sound equipment.

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