The 2SC458CTZ is a silicon NPN epitaxial planar transistor designed for low noise amplifier applications, particularly in audio and video circuits. It is known for its high gain and low noise figure, making it suitable for sensitive signal amplification.

Applications:

• Low-noise preamplifiers
• Microphone amplifiers
• Audio amplifiers
• Video amplifiers
• Radio frequency (RF) amplifiers
• Tape recorder preamplifiers

Features:

• Low noise figure: Typically 1 dB at 1 kHz
• High current gain (hFE): Typically 560
• Collector-emitter voltage (VCEO): 25 V
• Collector current (IC): 50 mA
• Low collector-base capacitance
• Epitaxial planar structure
• TO-92 package

Benefits:

• Low noise: The extremely low noise figure ensures minimal added noise to the amplified signal, preserving signal integrity.
• High gain: The high current gain allows for significant signal amplification, improving the overall signal-to-noise ratio.
• Versatile: Suitable for a broad range of low-noise amplifier applications in both audio and video circuits.
• Compact size: The TO-92 package allows for easy integration into compact electronic designs.
• Reliable performance: The epitaxial planar structure provides stable and reliable operation.

Additional Details:

The 2SC458CTZ transistor is manufactured using an epitaxial planar process, which ensures high quality and consistent performance. The low collector-base capacitance contributes to its suitability for high-frequency applications. It is commonly used in preamplifiers to amplify weak signals with minimal added noise, making it ideal for applications such as microphone preamplifiers and tape recorder input stages.

This transistor is housed in a TO-92 package, a common and easily mountable package. It's important to handle the transistor with care during soldering to avoid overheating and potential damage. Due to its age, sourcing the 2SC458CTZ may require searching for alternative suppliers or considering suitable replacements with similar characteristics. When replacing, key parameters like noise figure, gain, and operating voltage should be carefully matched to ensure equivalent performance.