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MPSH17 from FSC,Fairchild Semiconductor

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MPSH17

Manufacturer: FSC, ON

CATV Transistor

Partnumber Manufacturer Quantity Availability
MPSH17 FSC, ON 6620 In Stock

Description and Introduction

CATV Transistor # Introduction to the MPSH17 Transistor  

The **MPSH17** is a high-frequency NPN bipolar junction transistor (BJT) designed for RF and microwave applications. Known for its low noise and high-speed performance, it is commonly used in amplification, switching, and oscillator circuits within communication systems, radar, and other high-frequency electronic devices.  

## Key Features  

- **High Transition Frequency (fT):** The MPSH17 offers an fT of up to 8 GHz, making it suitable for very high-frequency operations.  
- **Low Noise Figure:** Its optimized design ensures minimal noise, which is critical for sensitive RF signal processing.  
- **Small Signal Amplification:** With a current gain (hFE) ranging between 25 and 75, it provides reliable amplification in small-signal applications.  
- **Compact Package:** Typically available in SOT-23 or similar surface-mount packages, it is ideal for space-constrained designs.  

## Applications  

Due to its high-speed capabilities, the MPSH17 is widely used in:  
- RF amplifiers and mixers  
- Local oscillators in wireless systems  
- Signal processing circuits  
- Test and measurement equipment  

## Considerations  

While the MPSH17 excels in high-frequency applications, designers should ensure proper biasing and impedance matching to maximize performance. Its low power handling also limits its use in high-current applications.  

In summary, the MPSH17 is a versatile RF transistor that balances speed, noise performance, and compactness, making it a preferred choice for engineers working in high-frequency electronics.

Application Scenarios & Design Considerations

CATV Transistor

Alternative Part Number

  • 2N918 --: NPN VHF/UHF transistor with similar low-noise, high-gain characteristics and comparable pinout, widely used as a substitute in RF amplifier circuits.
  • BF199 --: NPN RF transistor offering similar frequency response and gain, suitable for VHF applications where the MPSH17 is used.
  • PN918 --: NPN VHF/UHF transistor with comparable electrical specifications and TO-92 package, a common cross-reference for MPSH17-type parts.
  • 2N3904 --: Widely available general-purpose NPN transistor with similar small-signal switching characteristics and a different series name.
  • BC547 --: Common NPN small-signal transistor offering comparable gain and switching performance in a different naming series.
  • MMBT3904 --: SMD version of the 2N3904 with similar electrical ratings, suitable as a drop-in alternative where surface-mount is acceptable.

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