C1124 Transistor - Datasheet Better

The (often labeled simply as C1124 ) is an NPN silicon power transistor designed for high-voltage audio amplification and general switching. It is frequently paired with its PNP complement, the 2SA706 , in audio output stages. ⚡ Key Specifications Description Type Silicon Bipolar Junction Transistor (BJT) V CEO 120V – 140V Max Collector-Emitter voltage (varies by manufacturer) I C 1.0A – 1.5A Max continuous Collector current P C 5W – 7.9W Max power dissipation (with proper heat sinking) h FE 50 – 442

The C1124 transistor offers several features and benefits that make it a popular choice among electronics enthusiasts:

Often considered one of the best direct replacements for general-purpose 160V/1A applications, the Go to product viewer dialog for this item. c1124 transistor datasheet better

The following data reflects standard ratings for the 2SC1124. Maximum Rating Collector-Base Voltage cap V sub cap C cap B cap O end-sub Collector-Emitter Voltage cap V sub cap C cap E cap O end-sub Emitter-Base Voltage cap V sub cap E cap B cap O end-sub Collector Current (Continuous) cap I sub cap C Collector Power Dissipation cap P sub cap C in some listings) Transition Frequency f sub cap T DC Current Gain (Min) h sub cap F cap E end-sub Physical Characteristics and Pinout Package Type : Typically found in Pin Configuration

. Low capacitance prevents high-frequency signal degradation. Pinout Configuration (TO-92 Variant) The (often labeled simply as C1124 ) is

. It is primarily recognized for its high-voltage capabilities and is frequently used in the pre-driver stages of vintage audio equipment, such as the Pioneer SX-828 receiver. Technical Specifications

If you are using this in a power supply (SMPS), the original C1124 has a ( t_off ) of ~2.5µs. Modern alternatives like the MJE340 are faster, reducing heat. The following data reflects standard ratings for the 2SC1124

TO-202 (Through-hole with a metal tab for heat sinking) Max Collector-Base Voltage (VCBO): 160V Max Collector-Emitter Voltage (VCEO): 140V Continuous Collector Current (IC): 1A

are often recommended by technicians for pre-amplifier builds.

A classic TO-126 transistor. While common, check the voltage rating, as some BD139 variants only reach 80V compared to the C1124’s 140V.

Standard datasheets often gloss over the nuances of the electrical characteristics. Below are the performance metrics evaluated at a standard ambient temperature of 25∘C25 raised to the composed with power C DC Current Gain ( hFEh sub cap F cap E end-sub