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KST3904 from SAMSUNG

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KST3904

Manufacturer: SAMSUNG

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KST3904 SAMSUNG 13600 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The part **KST3904** is a **PNP bipolar junction transistor (BJT)** manufactured by **SAMSUNG**. Below are its specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Type:** PNP Bipolar Junction Transistor (BJT)  
- **Collector-Base Voltage (VCBO):** -60V  
- **Collector-Emitter Voltage (VCEO):** -40V  
- **Emitter-Base Voltage (VEBO):** -5V  
- **Collector Current (IC):** -200mA  
- **Power Dissipation (PD):** 625mW  
- **DC Current Gain (hFE):** 100-300 (at IC = -10mA, VCE = -1V)  
- **Transition Frequency (fT):** 250MHz (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions:**  
- The **KST3904** 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 device is characterized by high current gain, low noise, and good linearity, making it useful in audio and signal processing circuits.  

### **Features:**  
- **High current gain (hFE)** for improved signal amplification.  
- **Low saturation voltage**, enhancing switching efficiency.  
- **Complementary pair** available with NPN transistor **KST3906**.  
- **Wide operating temperature range**, allowing use in various environments.  

This transistor is commonly used in **amplifiers, switching circuits, and driver stages** in electronic designs.  

*(Note: Always verify datasheets for exact specifications, as variations may exist.)*

Application Scenarios & Design Considerations

NPN Epitaxial Silicon Transistor

Alternative Part Number

  • MMBT3904 --: Industry-standard NPN small-signal transistor in SOT-23 with the same 3904 die characteristics and widely available as a direct substitute.
  • 2N3904 --: Classic through-hole NPN general-purpose transistor with equivalent electrical ratings; suitable if the board layout allows a TO-92 package.
  • BC847B --: SOT-23 NPN transistor with comparable voltage and current ratings, offering a different series as a practical alternative when 3904 types are unavailable.
  • BC847 --: General-purpose NPN transistor in SOT-23 with comparable current and voltage ratings; good alternative when 3904 series is unavailable.

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