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KSA1142YSTU from FAIRCHILD,Fairchild Semiconductor

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KSA1142YSTU

Manufacturer: FAIRCHILD, FAIRCHIL

PNP Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSA1142YSTU FAIRCHILD, FAIRCHIL 22650 In Stock

Description and Introduction

PNP Epitaxial Silicon Transistor The part **KSA1142YSTU** is manufactured by **FAIRCHILD** (now part of ON Semiconductor). Below are its specifications, descriptions, and features based on available factual information:  

### **Specifications:**  
- **Type:** PNP Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCE):** -150V  
- **Collector-Base Voltage (VCB):** -150V  
- **Emitter-Base Voltage (VEB):** -5V  
- **Collector Current (IC):** -150mA  
- **Power Dissipation (PD):** 625mW  
- **DC Current Gain (hFE):** 60 to 240 (depending on conditions)  
- **Transition Frequency (fT):** 50MHz  
- **Package Type:** SOT-23 (SC-59)  

### **Description:**  
The **KSA1142YSTU** is a high-voltage PNP transistor designed for general-purpose amplification and switching applications. It is suitable for use in low-power circuits requiring a small footprint.  

### **Features:**  
- High voltage capability  
- Low noise performance  
- Compact SOT-23 package for space-constrained designs  
- Suitable for switching and amplification in electronic circuits  

For detailed electrical characteristics, refer to the official datasheet from ON Semiconductor (formerly Fairchild).

Application Scenarios & Design Considerations

PNP Epitaxial Silicon Transistor

Alternative Part Number

  • 2SA1142 --: PNP high-voltage transistor with similar voltage and current ratings, widely used as a direct substitute in audio and general-purpose circuits.
  • 2SA1015 --: Common PNP transistor with comparable low-power switching characteristics, suitable for many circuits where the KSA1142YSTU is used.
  • BC557 --: Popular PNP general-purpose transistor with similar small-signal switching performance, readily available and cost-effective alternative.
  • MJE350 --: PNP high-voltage transistor with comparable Vceo and current ratings, widely available and suitable for audio driver stages.
  • 2N5401 --: Common PNP high-voltage small-signal transistor with similar voltage and current ratings, usable as a functional substitute in many circuits.

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