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SI9945DY from FSC,Fairchild Semiconductor

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SI9945DY

Manufacturer: FSC

Dual N-Channel Enhancement Mode MOSFET

Partnumber Manufacturer Quantity Availability
SI9945DY FSC 2415 In Stock

Description and Introduction

Dual N-Channel Enhancement Mode MOSFET **Part Number:** SI9945DY  
**Manufacturer:** FSC (Fairchild Semiconductor)  

### **Specifications:**  
- **Type:** Dual N-Channel Logic Level Enhancement Mode MOSFET  
- **Drain-Source Voltage (VDSS):** 20V  
- **Gate-Source Voltage (VGSS):** ±12V  
- **Continuous Drain Current (ID):** 5.5A (per channel)  
- **Pulsed Drain Current (IDM):** 20A  
- **Power Dissipation (PD):** 2W (per channel)  
- **On-Resistance (RDS(on)):** 0.028Ω (max at VGS = 4.5V)  
- **Threshold Voltage (VGS(th)):** 0.5V to 1.5V  
- **Input Capacitance (Ciss):** 500pF (typ)  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package:** SOIC-8  

### **Descriptions and Features:**  
- Designed for high-efficiency power management applications.  
- Low on-resistance for reduced conduction losses.  
- Logic-level gate drive (4.5V) for compatibility with microcontrollers.  
- Fast switching speed for improved performance in switching applications.  
- Dual N-Channel configuration in a single package for space-saving designs.  
- Suitable for battery protection, DC-DC converters, and motor control circuits.  

(Note: Always refer to the latest datasheet for detailed specifications.)

Application Scenarios & Design Considerations

Dual N-Channel Enhancement Mode MOSFET

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