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SI4446DY from VISHAY

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SI4446DY

Manufacturer: VISHAY

N-Channel 40-V (D-S) MOSFET

Partnumber Manufacturer Quantity Availability
SI4446DY VISHAY 10148 In Stock

Description and Introduction

N-Channel 40-V (D-S) MOSFET The SI4446DY is a P-channel MOSFET manufactured by Vishay Siliconix. Here are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Drain-Source Voltage (VDSS):** -30V  
- **Continuous Drain Current (ID):** -11A (at TC = 25°C)  
- **Pulsed Drain Current (IDM):** -44A  
- **Gate-Source Voltage (VGS):** ±20V  
- **Power Dissipation (PD):** 3.1W (at TA = 25°C)  
- **On-Resistance (RDS(on)):**  
  - 28mΩ (at VGS = -10V, ID = -11A)  
  - 35mΩ (at VGS = -4.5V, ID = -6.5A)  
- **Threshold Voltage (VGS(th)):** -1V to -3V  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The SI4446DY is a high-performance P-channel MOSFET designed for power management applications. It features low on-resistance and high current handling capability, making it suitable for switching and load control in various electronic circuits.  

### **Features:**  
- **Low On-Resistance:** Enhances efficiency in power applications.  
- **Fast Switching Speed:** Optimized for high-frequency operation.  
- **Avalanche Energy Rated:** Provides ruggedness in harsh conditions.  
- **Lead-Free & RoHS Compliant:** Meets environmental standards.  
- **TO-252 (DPAK) Package:** Compact and suitable for surface-mount applications.  

This information is based on the manufacturer's datasheet. For detailed application guidelines, refer to Vishay Siliconix's official documentation.

Application Scenarios & Design Considerations

N-Channel 40-V (D-S) MOSFET

Alternative Part Number

  • FDS6680A --: N-channel MOSFET in SO-8 with comparable voltage and current ratings, widely available and pin-compatible.
  • IRF7413 --: Similar N-channel SO-8 MOSFET with matching RDS(on) class, suitable drop-in replacement for switching applications.
  • AO4406 --: Low-voltage N-channel MOSFET in SO-8 with comparable on-resistance and current capability, cost-effective alternative.

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