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KST3906 from SAMSUNG

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KST3906

Manufacturer: SAMSUNG, FAIRCHILD

PNP Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KST3906 SAMSUNG, FAIRCHILD 10200 In Stock

Description and Introduction

PNP Epitaxial Silicon Transistor The KST3906 is a PNP bipolar junction transistor (BJT) manufactured by **SAMSUNG**. Below are its specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Type:** PNP Transistor  
- **Maximum Collector-Base Voltage (VCB):** -40V  
- **Maximum Collector-Emitter Voltage (VCE):** -40V  
- **Maximum Emitter-Base Voltage (VEB):** -5V  
- **Continuous Collector Current (IC):** -200mA  
- **Total Power Dissipation (Ptot):** 300mW  
- **Transition Frequency (fT):** 250MHz  
- **DC Current Gain (hFE):** 100 to 300 (varies by operating conditions)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions:**  
- The KST3906 is a general-purpose PNP transistor designed for amplification and switching applications.  
- It is housed in a **TO-92** package, making it suitable for through-hole PCB mounting.  
- The transistor is commonly used in low-power circuits, signal amplification, and switching applications.  

### **Features:**  
- High current gain (hFE) for improved amplification.  
- Low noise performance, making it suitable for audio applications.  
- Fast switching speed, useful in digital circuits.  
- Complementary NPN counterpart: **KST3904** (for push-pull configurations).  

For exact performance characteristics, refer to the official **SAMSUNG datasheet**.

Application Scenarios & Design Considerations

PNP Epitaxial Silicon Transistor

Alternative Part Number

  • MMBT3906 --: Industry-standard PNP switching transistor with the same 3906 electrical characteristics, widely available and pin-compatible in SOT-23.
  • 2N3906 --: Classic through-hole PNP general-purpose transistor with equivalent voltage and current ratings, suitable for direct substitution where package allows.
  • BC857 --: Low-power PNP transistor in SOT-23 with comparable 45 V rating and current capability, a common alternative for small-signal switching applications.

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