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KST3904-MTF from 仙童,Fairchild Semiconductor

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KST3904-MTF

Manufacturer: 仙童, SAMSUNG, AUK

NPN Epitaxial Silicon Transistor

Partnumber Manufacturer Quantity Availability
KST3904-MTF,KST3904MTF 仙童, SAMSUNG, AUK 13170 In Stock

Description and Introduction

NPN Epitaxial Silicon Transistor The KST3904-MTF is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Fairchild Semiconductor (仙童). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Transistor Type:** NPN  
- **Collector-Emitter Voltage (VCE):** 40V  
- **Collector-Base Voltage (VCB):** 60V  
- **Emitter-Base Voltage (VEB):** 6V  
- **Collector Current (IC):** 200mA  
- **Power Dissipation (PD):** 350mW  
- **DC Current Gain (hFE):** 100–300 (at IC = 10mA, VCE = 1V)  
- **Transition Frequency (fT):** 250MHz  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package Type:** SOT-23 (Surface Mount)  

### **Descriptions:**  
- The KST3904-MTF is a small-signal transistor designed for amplification and switching applications.  
- It is commonly used in low-power circuits, signal processing, and general-purpose switching.  
- The SOT-23 package makes it suitable for compact PCB designs.  

### **Features:**  
- High current gain (hFE) for improved signal amplification.  
- Low noise performance, making it ideal for audio applications.  
- Fast switching speed for digital applications.  
- RoHS compliant (lead-free).  

This information is based on Fairchild Semiconductor's datasheet for the KST3904-MTF.

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.
  • 2N3904S --: Surface-mount 2N3904 variant offering equivalent 40V/200mA NPN switching performance in a comparable package.
  • BC847B --: General-purpose NPN transistor in SOT-23 with similar low-current switching ratings, suitable for most 3904 applications.
  • 2N3904 --: Classic through-hole NPN 3904 transistor with equivalent electrical characteristics; suitable if leaded package is acceptable.

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