The 2SB646 is a PNP silicon transistor manufactured by Hitachi, Ltd. designed for use in audio amplifier and general-purpose switching applications. It is known for its reliable performance within its specified operating parameters.

Applications

• Audio Amplifiers
• Switching Circuits
• Driver Stages
• Power Supplies
• General Purpose Amplification

Features

• PNP Silicon Transistor
• High Collector Current (Ic)
• Low Saturation Voltage
• Good Current Gain (hFE) Linearity
• High Collector Power Dissipation

Benefits

• Provides stable and reliable amplification in audio circuits.
• Offers efficient switching performance.
• Suitable for use as a driver in power amplifier circuits.
• Enables compact circuit designs due to its power handling capabilities.
• Suitable for a broad range of operating conditions.

Technical Specifications

The 2SB646 typically features a collector-base voltage (VCBO) of -60V, a collector-emitter voltage (VCEO) of -50V, and an emitter-base voltage (VEBO) of -5V. It also has a collector current (IC) of -1.5A and a collector power dissipation (PC) of 10W. Its current gain (hFE) typically ranges from 100 to 300. Transition Frequency (fT) is around 5 MHz. It operates within a temperature range of -55°C to +150°C. These specifications make it suitable for many audio and switching applications.

The package type for the 2SB646 is typically a TO-92 or similar through-hole package, allowing for easy mounting. Proper heat sinking may be needed when operating at high power levels to maintain reliability and prevent thermal runaway.