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KSC5042MSTU from FAIRCHILD,Fairchild Semiconductor

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KSC5042MSTU

Manufacturer: FAIRCHILD

NPN Triple Diffused Planar Silicon Transistor
Partnumber Manufacturer Quantity Availability
KSC5042MSTU FAIRCHILD 431 In Stock

Description and Introduction

NPN Triple Diffused Planar Silicon Transistor **Part Number:** KSC5042MSTU  
**Manufacturer:** FAIRCHILD  

### **Specifications:**  
- **Type:** NPN Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCEO):** 400V  
- **Collector Current (IC):** 7A  
- **Power Dissipation (PD):** 40W  
- **DC Current Gain (hFE):** 8 to 40 (at IC = 3A, VCE = 5V)  
- **Transition Frequency (fT):** 10MHz (typical)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** TO-220F (isolated tab)  

### **Descriptions:**  
- High-voltage, high-current NPN transistor designed for power applications.  
- Suitable for switching and amplification in industrial and consumer electronics.  

### **Features:**  
- High breakdown voltage (400V).  
- Low saturation voltage for improved efficiency.  
- Isolated package (TO-220F) for simplified mounting.  
- High current capability (7A).  

(Data sourced from Fairchild Semiconductor documentation.)

Application Scenarios & Design Considerations

NPN Triple Diffused Planar Silicon Transistor

Alternative Part Number

  • 2N5551 --: High-voltage NPN transistor with similar 160V Vceo rating and low current, widely available and often used in circuits where KSC5042 is specified.
  • MPSA42 --: 300V NPN high-voltage transistor offering higher voltage margin than the original, suitable as a robust replacement in high-voltage switching and amplifier applications.
  • BF420 --: 250V NPN high-voltage transistor in TO-92 package with comparable current rating, a common European alternative for high-voltage small-signal NPN applications.

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