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ZTX749 from ZT

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ZTX749

Manufacturer: ZT, FAIRCHILD, ZETEX

PNP Low Saturation Transistor

Partnumber Manufacturer Quantity Availability
ZTX749 ZT, FAIRCHILD, ZETEX 90485 In Stock

Description and Introduction

PNP Low Saturation Transistor Here are the factual details about the ZTX749 manufacturer ZETEX specifications, descriptions, and features:  

### **Manufacturer:** ZETEX (now part of Diodes Incorporated)  
### **Part Number:** ZTX749  

#### **Description:**  
The ZTX749 is a high-voltage NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications.  

#### **Key Features:**  
- **High Voltage Capability:** Suitable for applications requiring high-voltage operation.  
- **High Current Gain (hFE):** Provides good amplification characteristics.  
- **Low Saturation Voltage:** Enhances efficiency in switching applications.  
- **Complementary PNP Pair:** Can be used with ZTX649 for complementary designs.  

#### **Electrical Specifications (Typical):**  
- **Collector-Emitter Voltage (VCEO):** 400V  
- **Collector-Base Voltage (VCBO):** 500V  
- **Emitter-Base Voltage (VEBO):** 6V  
- **Collector Current (IC):** 500mA  
- **Power Dissipation (Ptot):** 1W  
- **DC Current Gain (hFE):** 40 to 250 (depending on conditions)  
- **Transition Frequency (fT):** 50MHz  

#### **Package:**  
- **TO-92 (Through-Hole Package)**  

#### **Applications:**  
- High-voltage switching  
- Power amplification  
- General-purpose amplification circuits  

For exact datasheet details, refer to the official documentation from Diodes Incorporated (formerly ZETEX).

Application Scenarios & Design Considerations

PNP Low Saturation Transistor

Alternative Part Number

  • BC327 --: PNP transistor with similar voltage and current ratings, widely available and commonly used as a general replacement for ZTX749.
  • 2N3906 --: Popular PNP switching transistor with comparable small-signal characteristics, suitable for low-power applications.
  • MPS2907A --: PNP transistor with higher current capability and similar pinout, usable in many circuits designed for the ZTX749.
  • BC557 --: Popular PNP transistor with comparable current and voltage ratings, suitable for general amplification and switching where the ZTX749 is used.

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