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KSC945-Y from FAIRCHILD,Fairchild Semiconductor

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KSC945-Y

Manufacturer: FAIRCHILD, FSC

Audio Frequency Amplifier & High Frequency OSC.

Partnumber Manufacturer Quantity Availability
KSC945-Y,KSC945Y FAIRCHILD, FSC 6000 In Stock

Description and Introduction

Audio Frequency Amplifier & High Frequency OSC. The KSC945-Y is a general-purpose NPN transistor manufactured by Fairchild Semiconductor. Below are its specifications, descriptions, and features based on available data:

### **Specifications:**  
- **Transistor Type:** NPN  
- **Collector-Base Voltage (VCBO):** 60V  
- **Collector-Emitter Voltage (VCEO):** 50V  
- **Emitter-Base Voltage (VEBO):** 5V  
- **Collector Current (IC):** 150mA  
- **Power Dissipation (PD):** 625mW  
- **DC Current Gain (hFE):** 60 to 320 (at IC = 2mA, VCE = 10V)  
- **Transition Frequency (fT):** 150MHz  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions:**  
- The KSC945-Y is a low-power, high-gain NPN bipolar junction transistor (BJT).  
- It is designed for general-purpose amplification and switching applications.  
- The transistor comes in a TO-92 package, making it suitable for through-hole PCB mounting.  

### **Features:**  
- High current gain (hFE) range for amplification purposes.  
- Low noise performance, making it suitable for audio applications.  
- Fast switching speed, useful for signal processing.  
- Reliable performance in a compact package.  

For exact application details, always refer to the official Fairchild datasheet.

Application Scenarios & Design Considerations

Audio Frequency Amplifier & High Frequency OSC.

Alternative Part Number

  • 2N3904 --: Very common NPN general-purpose transistor with similar small-signal switching and amplification characteristics; widely available and often used as a substitute for KSC945.
  • BC547 --: Standard NPN small-signal transistor with comparable current gain and voltage ratings, suitable for general amplification and switching replacements.
  • 2SC1815 --: Japanese NPN audio/small-signal transistor with similar low-noise and gain characteristics, commonly cross-referenced with KSC945 in many designs.
  • 2SC945-Y --: Classic NPN small-signal transistor with same Y current gain rank, direct electrical and pinout equivalent.
  • BC547B --: Widely available NPN general-purpose transistor with comparable gain and current ratings, suitable for most KSC945-Y applications.

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