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The 2SA92 is a PNP silicon transistor manufactured by various semiconductor companies. Below are the factual details about its specifications, descriptions, and features:

Specifications:

• Transistor Type: PNP
• Material: Silicon (Si)
• Maximum Collector-Base Voltage (VCBO): -30V
• Maximum Collector-Emitter Voltage (VCEO): -25V
• Maximum Emitter-Base Voltage (VEBO): -5V
• Collector Current (IC): -50mA
• Power Dissipation (Ptot): 300mW
• Junction Temperature (Tj): 125°C
• Transition Frequency (fT): ~100MHz (typical)
• Gain Bandwidth Product (hFE): 40–240 (depending on grade)

Descriptions:

• The 2SA92 is a general-purpose PNP transistor used in amplification and switching applications.
• It is housed in a TO-92 package, making it suitable for compact circuits.
• Commonly used in low-power audio amplifiers, signal processing, and driver stages.

Features:

• Low Noise: Suitable for audio applications.
• High Current Gain (hFE): Provides good amplification efficiency.
• Compact Size: TO-92 package allows easy PCB mounting.
• Reliable Performance: Stable operation under specified conditions.

Note:

• The 2SA92 may have equivalent or replacement transistors depending on availability (e.g., 2SA1015, BC557 in some cases).
• Always refer to the manufacturer’s datasheet for exact specifications before use.

This information is based on standard industry data. For precise values, consult the official datasheet from the manufacturer.