The 2SA733/JM is a PNP silicon transistor manufactured by NEC. It is primarily designed for low-noise amplifier applications and general-purpose switching circuits. Its low noise figure and high gain make it suitable for use in sensitive audio and instrumentation circuits. It is also used in preamplifier stages and input stages of audio amplifiers.

Applications:

• Low-noise amplifiers
• Preamplifiers
• Audio amplifier input stages
• General-purpose switching
• Instrumentation amplifiers

Features:

• Low noise figure
• High DC current gain (hFE)
• Low collector-emitter saturation voltage
• High transition frequency
• Small signal amplification

Benefits:

• Improved signal clarity in audio applications due to low noise.
• Enhanced amplification with minimal signal distortion
• Efficient switching performance
• Suitable for high-frequency applications
• Compact design allows for use in small form factor devices.

Specifications:

Collector-Base Voltage (VCBO): -60V

Collector-Emitter Voltage (VCEO): -50V

Emitter-Base Voltage (VEBO): -5V

Collector Current (IC): -0.15A

Collector Dissipation (PC): 0.25W

DC Current Gain (hFE): 200 to 700 (typical)

Transition Frequency (fT): 180 MHz (typical)

The 2SA733/JM transistor from NEC offers high performance in low-noise and small-signal amplifier circuits. Its characteristics make it a reliable component for applications requiring clean signal amplification and efficient switching. It is a commonly used transistor in older audio equipment and continues to be useful in modern circuit designs.