The 2SA812B-T1B is a PNP silicon epitaxial transistor manufactured by Renesas Electronics America. It is designed for use in low noise amplifier applications, particularly in audio circuits. This transistor is characterized by its low noise figure and high gain, making it suitable for amplifying weak signals without introducing significant noise.

Applications

• Audio preamplifiers
• Microphone amplifiers
• Low-noise amplifier stages
• General-purpose amplification

Features

• PNP Silicon Epitaxial Transistor
• Low Noise Figure
• High DC Current Gain (hFE)
• Excellent Linearity

Benefits

• Enhanced audio quality due to minimal added noise.
• Improved sensitivity in low-signal applications.
• Compact design due to small package size.
• Stable operation over a wide temperature range.
• Reduced distortion due to high linearity

Specifications

Collector-Base Voltage (VCBO): -30V

Collector-Emitter Voltage (VCEO): -25V

Emitter-Base Voltage (VEBO): -5V

Collector Current (IC): -50mA

Collector Power Dissipation (PC): 200mW

DC Current Gain (hFE): 200 to 600 (typical)

Noise Figure (NF): 1 dB (typical)

Operating Junction Temperature (Tj): 150°C

Storage Temperature (Tstg): -55°C to +150°C

Package: SOT-23

The 2SA812B-T1B is housed in a small SOT-23 package. The 'T1B' suffix usually indicates specific tape and reel packaging for automated assembly. This transistor provides low noise and high gain amplification for audio and other sensitive signal applications.