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SMBTA42 from INFINEON

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SMBTA42

Manufacturer: INFINEON, 西门子

High Voltage Transistors

Partnumber Manufacturer Quantity Availability
SMBTA42 INFINEON, 西门子 18000 In Stock

Description and Introduction

High Voltage Transistors The SMBTA42 is a PNP bipolar junction transistor (BJT) manufactured by Infineon Technologies. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Transistor Type:** PNP  
- **Maximum Collector-Emitter Voltage (VCEO):** -30 V  
- **Maximum Collector-Base Voltage (VCBO):** -40 V  
- **Maximum Emitter-Base Voltage (VEBO):** -5 V  
- **Continuous Collector Current (IC):** -500 mA  
- **Power Dissipation (Ptot):** 625 mW  
- **DC Current Gain (hFE):** 25 - 250 (depending on conditions)  
- **Transition Frequency (fT):** 50 MHz  
- **Operating Junction Temperature (Tj):** -55°C to +150°C  
- **Package Type:** SOT-23 (Surface Mount)  

### **Descriptions:**  
- The SMBTA42 is a general-purpose PNP transistor designed for amplification and switching applications.  
- It is suitable for low-power applications in consumer electronics, industrial control, and automotive systems.  
- The SOT-23 package makes it compact and ideal for space-constrained PCB designs.  

### **Features:**  
- High current gain (hFE) range for improved performance in amplification circuits.  
- Low saturation voltage for efficient switching.  
- RoHS compliant (lead-free and environmentally friendly).  
- Suitable for surface-mount assembly (SMD).  

This information is based on Infineon's datasheet and technical documentation for the SMBTA42 transistor.

Application Scenarios & Design Considerations

High Voltage Transistors

Alternative Part Number

  • MMBTA42 --: Same 300V NPN high-voltage transistor in SOT-23 package with equivalent electrical ratings, widely available and pin-compatible.
  • PMBTA42 --: Direct SOT-23 high-voltage NPN transistor equivalent to the SMBTA42, with similar VCEO and current ratings from a major supplier.
  • FMMT458 --: SOT-23 high-voltage NPN transistor with comparable 400V rating and low saturation voltage, suitable as a functional substitute.

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