SANKEN 2SA745 Transistor

( Brand: Sanken ), ( Manufacturer Part Number: 2SA745 )

Review SANKEN Vintage Output

The 2SA745 Sanken Transistor is a high-quality, general-purpose bipolar junction transistor (BJT) that is widely used in various electronic applications due to its excellent performance characteristics. This transistor is manufactured by Sanken Electric Co., Ltd., a renowned Japanese electronics company known for its high-quality components.

The 2SA745 is a NPN type transistor, which means it has a p-type base, an n-type emitter, and an n-type collector. It is designed to operate in both power and audio frequency ranges, making it suitable for a wide range of applications, including amplifiers, switching circuits, and voltage regulators.

The transistor has a collector-emitter voltage (VCE) rating of 400V, which indicates its ability to withstand high voltage levels. The maximum collector current (IC) is 2A, while the maximum base current (IB) is 20mA. These specifications make the 2SA745 an ideal choice for applications that require high power handling capabilities.

The 2SA745 also features a high current gain ( ), which is a measure of the amplification provided by the transistor. It has a typical of 100, meaning that for every 1mA of base current, the collector current increases to 100mA. This high gain allows the transistor to effectively amplify small signals, making it useful in signal amplification circuits.

The transistor's frequency response is also impressive, with a cutoff frequency (fT) of 130MHz. This means it can handle high-frequency signals without significant distortion, making it suitable for applications in communication systems, radio frequency (RF) circuits, and other high-frequency applications.

The 2SA745 is also known for its excellent thermal characteristics. It has a maximum junction temperature (Tj) of 150 C, which means it can operate in high-temperature environments without degrading its performance. It also has a thermal resistance (Rth) of 150 C/W, which indicates its ability to dissipate heat effectively.

In conclusion, the 2SA745 Sanken Transistor is a high-performance, general-purpose BJT that offers excellent power handling capabilities, high current gain, and excellent frequency response. Its high-temperature rating and thermal resistance make it suitable for use in high-temperature environments. These features make it an ideal choice for various electronic applications where high power handling, high gain, and high-frequency response are required.

1. High gain and low noise: The 2SA745 Sanken transistor has a high gain and low noise level, making it suitable for use in audio amplifiers, oscillators, and other high-fidelity applications.

2. Wide operating voltage range: The 2SA745 Sanken transistor has a wide operating voltage range, which makes it compatible with various power supply configurations.

3. Robust construction: The 2SA745 Sanken transistor is built with high-quality materials and has a robust construction, ensuring a long lifespan and reliable performance.

1. Limited availability: The 2SA745 Sanken transistor is a vintage component, and its availability may be limited in some regions.

2. Higher cost: Compared to modern transistors, the 2SA745 Sanken transistor may be more expensive due to its rarity and the cost of sourcing it from vintage parts suppliers.

The 2SA745 Sanken transistor is a high-quality vintage component that offers excellent performance in audio amplifiers and other high-fidelity applications. Its wide operating voltage range, high gain, and low noise level make it a popular choice among audiophiles and electronics enthusiasts. However, its limited availability and higher cost may be a drawback for some users. If you are looking for a vintage transistor with exceptional performance and are willing to pay a premium price, the 2SA745 Sanken transistor is a great choice.

If you are interested in using the 2SA745 Sanken transistor in your electronic projects, I recommend sourcing it from a reputable vintage parts supplier. Make sure to check the specifications and test the transistor before using it in your circuit to ensure that it meets your requirements. Additionally, consider using modern alternatives that offer similar performance and are more readily available, such as the 2N3904 or 2N3906 transistors. These transistors may not have the same vintage charm, but they are widely available and offer excellent performance at a lower cost. Ultimately, the choice depends on your project requirements and the level of authenticity you want to achieve.

Details:

Vintage Sanken output transistor 2SA745 tested - good.

part #: 2sa745 prices

• $12.28-$23.95

specifications partsvintageaudio:

• brand: Sanken
• mpn: 2sa745

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• city: Salisbury, Maryland
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