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KSC3503 from FSC,Fairchild Semiconductor

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KSC3503

Manufacturer: FSC, FAIRCHILD

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KSC3503 FSC, FAIRCHILD 56300 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The KSC3503 is a high-voltage NPN transistor manufactured by **Fairchild Semiconductor**. Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Transistor Type:** NPN  
- **Collector-Emitter Voltage (VCEO):** 300V  
- **Collector-Base Voltage (VCBO):** 300V  
- **Emitter-Base Voltage (VEBO):** 5V  
- **Collector Current (IC):** 100mA  
- **Power Dissipation (PD):** 10W  
- **DC Current Gain (hFE):** 30 to 120 (at IC = 10mA, VCE = 10V)  
- **Transition Frequency (fT):** 50MHz  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The KSC3503 is designed for high-voltage applications, including power switching and amplification in circuits requiring high breakdown voltage. It is commonly used in CRT displays, power supplies, and other high-voltage systems.

### **Features:**  
- High breakdown voltage (300V)  
- Medium power dissipation capability (10W)  
- Suitable for high-voltage switching and amplification  
- Complementary PNP part: KSA1381  

The KSC3503 is packaged in **TO-126** or similar form factors.  

*(Note: Always verify datasheet details for exact application conditions.)*

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • 2SC3503 --: Same transistor type and ratings under the original Japanese 2SC naming, a direct functional equivalent to KSC3503.
  • MJE340 --: High-voltage NPN transistor with comparable Vceo and power ratings, widely available and suitable as a substitute in many circuits.
  • 2N5551 --: Common high-voltage NPN transistor with similar voltage rating, usable in lower-current applications as an alternative.
  • 2SC4793 --: High-voltage, high-current NPN transistor commonly used as an alternative in audio amplifier driver stages, with ratings close to the KSC3503.

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