
( Brand: Sony ), ( Manufacturer Part Number: 2SD28 ), ( Type: Power Transistor )
The Sony 2SD28 SID NPN Power Transistor is a versatile and reliable electronic component, specifically designed for use in power amplifier circuits. This transistor is a part of the 2SD series, known for their high current handling capacity and excellent power efficiency.
The 2SD28 is a NPN (Nepal, PNP) power transistor, which means it has three terminals: the emitter, base, and collector. The collector-emitter junction of this transistor can handle a maximum collector-emitter voltage (VCE) of 60V, making it suitable for applications requiring moderate voltage levels.
The 2SD28 has a maximum collector current (IC) of 2.8A, indicating its ability to handle high currents. This makes it an excellent choice for power amplifier circuits, where high current is required to drive speakers or other high power loads.
The transistor's forward beta (hfe) is around 100, which is a good balance between current gain and power dissipation. A higher beta would result in more power dissipation, while a lower beta would require more base current for the same collector current.
The Sony 2SD28 SID NPN Power Transistor has a thermal resistance ( jc) of 2.1 C/W, which means it can handle a certain amount of power before it starts to overheat. It also has a maximum power dissipation (Pd) of 50W, which is the maximum amount of power it can dissipate as heat without damaging the transistor.
The physical dimensions of the 2SD28 are 13.8mm x 13.8mm x 4.3mm, making it a relatively compact component for its power handling capabilities. It is packaged in a TO-3 metal can, which provides excellent heat dissipation and mechanical protection.
In conclusion, the Sony 2SD28 SID NPN Power Transistor is a robust and reliable component for power amplifier circuits. Its high current handling capacity, excellent power efficiency, and good thermal characteristics make it an ideal choice for a wide range of applications, from audio to industrial power supplies.
Pros of buying Sony 2SD28 NPN Power Transistor 2SD-28:1. Reliable brand: Sony is a well-known and trusted electronics brand, ensuring quality and reliability.
2. Wide operating voltage range: The transistor can operate at a wide range of voltages, making it versatile for various applications.
3. High current handling capacity: The 2SD28 has a high current handling capacity, making it suitable for power amplifiers and other high-power applications.
4. Good power gain: The transistor provides good power gain, enabling efficient power transfer and improving overall system performance.
Cons of buying Sony 2SD28 NPN Power Transistor 2SD-28:1. Limited Availability: Due to its age, the 2SD28 may be harder to find in stock or may require a longer lead time for delivery.
2. Higher price compared to newer transistors: As a legacy device, the 2SD28 might be more expensive than newer transistors with similar specifications.
3. Lower maximum frequency: The 2SD28 has a lower maximum frequency compared to newer transistors, which may limit its use in high-frequency applications.
Conclusion:The Sony 2SD28 NPN Power Transistor 2SD-28 is a reliable and versatile option for power amplifiers and other high-power applications. Its wide operating voltage range, high current handling capacity, and good power gain make it a suitable choice for many applications. However, its limited availability, higher price, and lower maximum frequency are factors to consider before making a purchase.
Recommendation:If you require a transistor for a specific legacy application and are willing to pay the premium, the Sony 2SD28 NPN Power Transistor 2SD-28 is a reliable option. However, if you're looking for a transistor with more modern specifications and a lower price, you may want to consider newer alternatives. In either case, be sure to consult the datasheet for the specific model to ensure it meets your requirements.
NEW Open box: An item in excellent, new condition with no functional defects. The item may be missing original packaging. Genuine Sony 2SD28 Si NPN Power Transistor 2SD-28. Price is per piece.
5 Available Open box: An item in excellent, new condition with no functional defects.