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KSC3953 from Fairchild,Fairchild Semiconductor

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KSC3953

Manufacturer: Fairchild, FSC, 仙童

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSC3953 Fairchild, FSC, 仙童 170592 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The part **KSC3953** is manufactured by **仙童 (Fairchild Semiconductor)**. Below are the specifications, descriptions, and features based on available factual information:  

### **Specifications:**  
- **Type:** PNP Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCE):** -30V  
- **Collector-Base Voltage (VCB):** -30V  
- **Emitter-Base Voltage (VEB):** -5V  
- **Collector Current (IC):** -200mA  
- **Power Dissipation (PD):** 300mW  
- **DC Current Gain (hFE):** 60-320 (depending on operating conditions)  
- **Transition Frequency (fT):** 50MHz (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The **KSC3953** is a general-purpose PNP transistor designed for amplification and switching applications. It is commonly used in audio circuits, signal processing, and low-power switching applications.  

### **Features:**  
- High current gain (hFE) for improved efficiency  
- Low saturation voltage for better switching performance  
- Suitable for small-signal amplification  
- Compact TO-92 package for easy PCB mounting  

This information is based on Fairchild Semiconductor's documentation and standard transistor characteristics.

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • 2SC3953 --: Same 3953 type number in the Japanese 2SC naming series; identical NPN transistor intended as a direct functional replacement.
  • MJE340 --: General-purpose NPN transistor with comparable voltage and current ratings, usable where exact 3953 matching is not critical.
  • 2SC3955 --: Similar NPN high-voltage video amplifier transistor in the same family, suitable substitute with comparable ratings.
  • BF420 --: NPN high-voltage transistor usable as a functional replacement in video amplifier circuits with similar voltage and current ratings.
  • 2N5551 --: General-purpose NPN high-voltage transistor with similar voltage and current ratings, commonly used as a cross-reference for small-signal high-voltage applications.

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