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KSR2205 from FAILCHIL,Fairchild Semiconductor

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KSR2205

Manufacturer: FAILCHIL, FAIRCHILD, FSC

PNP Epitaxial Silicon Transistor
Partnumber Manufacturer Quantity Availability
KSR2205 FAILCHIL, FAIRCHILD, FSC 2154 In Stock

Description and Introduction

PNP Epitaxial Silicon Transistor The KSR2205 is a PNP bipolar junction transistor (BJT) manufactured by Fairchild Semiconductor. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Type:** PNP Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCE):** -50V  
- **Collector-Base Voltage (VCB):** -50V  
- **Emitter-Base Voltage (VEB):** -5V  
- **Collector Current (IC):** -600mA  
- **Power Dissipation (PD):** 625mW  
- **DC Current Gain (hFE):** 40 to 250 (depending on operating conditions)  
- **Transition Frequency (fT):** 250MHz (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The KSR2205 is a general-purpose PNP transistor designed for amplification and switching applications. It is housed in a TO-92 package, making it suitable for compact circuit designs.  

### **Features:**  
- High current gain (hFE)  
- Low saturation voltage  
- Fast switching speed  
- Suitable for low-power amplification and switching circuits  

This information is based on Fairchild Semiconductor's datasheet for the KSR2205 transistor.

Application Scenarios & Design Considerations

PNP Epitaxial Silicon Transistor

Alternative Part Number

  • 2N3904 --: Widely available general-purpose NPN transistor in TO-92, suitable for low-current switching and amplification similar to the KSR2205.
  • BC547 --: Common NPN bipolar transistor with comparable small-signal characteristics, easy drop-in for many KSR2205 applications.
  • MMBT3904 --: SMD NPN transistor equivalent to 2N3904, useful when a surface-mount alternative to the KSR2205 is needed.
  • TLP190B --: Photocoupler/optocoupler in a similar function class with comparable isolation performance, widely available and often used as a cross for Fairchild opto parts.
  • PC817 --: Very common general-purpose optocoupler with similar CTR and isolation ratings, easy to source and a standard substitute in many designs.
  • 4N35 --: Industry-standard optocoupler with transistor output, similar voltage and isolation characteristics, broadly stocked and well documented.

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