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KST5179MTF from FAIRCHILD,Fairchild Semiconductor

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KST5179MTF

Manufacturer: FAIRCHILD

NPN Epitaxial Silicon Transistor
Partnumber Manufacturer Quantity Availability
KST5179MTF FAIRCHILD 9000 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor Part Number: **KST5179MTF**  
Manufacturer: **FAIRCHILD**  

### Specifications:  
- **Type**: NPN Bipolar Junction Transistor (BJT)  
- **Package**: SOT-23 (SC-59)  
- **Collector-Base Voltage (VCBO)**: 40V  
- **Collector-Emitter Voltage (VCEO)**: 40V  
- **Emitter-Base Voltage (VEBO)**: 5V  
- **Collector Current (IC)**: 500mA  
- **Power Dissipation (PD)**: 225mW  
- **DC Current Gain (hFE)**: 100-300 @ IC = 10mA  
- **Transition Frequency (fT)**: 200MHz  
- **Operating Temperature Range**: -55°C to +150°C  

### Descriptions:  
The **KST5179MTF** is a high-performance NPN transistor designed for general-purpose amplification and switching applications. It features low saturation voltage and high current gain, making it suitable for use in portable electronics, signal processing, and driver circuits.  

### Features:  
- High current capability (500mA)  
- Low saturation voltage  
- High transition frequency (200MHz)  
- Small SOT-23 package for space-constrained designs  
- Pb-free and RoHS compliant  

For detailed electrical characteristics and application notes, refer to the official Fairchild (now ON Semiconductor) datasheet.

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • MMBT5179 --: Same NPN RF transistor type with comparable Vce and gain characteristics, widely available and pin-compatible in SOT-23.
  • BFG520 --: NPN RF wideband transistor suitable for similar high-frequency amplifier applications with comparable gain and noise performance.
  • 2SC3356 --: Low-noise NPN RF transistor in SOT-23 offering similar frequency response and gain, usable as a functional substitute.

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