The 2SA1245(TE85L) is a PNP silicon epitaxial transistor manufactured by Toshiba Semiconductor and Storage. It's commonly used in audio amplifiers and general-purpose switching applications. This transistor is known for its low noise characteristics, making it suitable for high-fidelity audio equipment.

Applications

• Audio Amplifiers: Used in preamplifiers, power amplifiers, and headphone amplifiers.
• Switching Circuits: Employed in high-speed switching applications.
• Line Drivers: Used to drive signals over long distances.
• Voltage Regulators: Used in linear voltage regulators.

Features

• PNP Silicon Epitaxial Transistor
• Low Noise: Ideal for audio applications.
• High Current Gain (hFE)
• Low Saturation Voltage
• Surface Mount Package (TE85L)

Benefits

• Provides clean and clear audio amplification.
• Enables efficient switching in various circuits.
• Minimizes power loss due to low saturation voltage.
• Simplifies circuit board assembly.

Technical Specifications (Typical)

• Collector-Base Voltage (VCBO): -60V
• Collector-Emitter Voltage (VCEO): -50V
• Emitter-Base Voltage (VEBO): -5V
• Collector Current (IC): -1A
• Collector Power Dissipation (PC): 0.9W
• Current Gain (hFE): 200 to 700 (typical)
• Operating Junction Temperature: 150°C

The 2SA1245(TE85L) is a reliable PNP transistor suitable for a wide range of applications. Its low noise and high gain make it an excellent choice for audio circuits, while its switching capabilities make it useful in digital circuits as well. The TE85L surface mount package simplifies the manufacturing process and allows for compact circuit designs. Its robust electrical characteristics ensure reliable operation under various operating conditions. This component is particularly well-suited where signal integrity is crucial.