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SI4505DY from SILICONIX

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SI4505DY

Manufacturer: SILICONIX, VISHAY

N- and P-Channel MOSFET

Partnumber Manufacturer Quantity Availability
SI4505DY SILICONIX, VISHAY 1379 In Stock

Description and Introduction

N- and P-Channel MOSFET The SI4505DY is a P-channel MOSFET manufactured by Siliconix (a subsidiary of Vishay). Here are its specifications, descriptions, and features:

### **Specifications:**
- **Drain-Source Voltage (VDSS):** -20V  
- **Gate-Source Voltage (VGS):** ±12V  
- **Continuous Drain Current (ID):** -5.5A  
- **Pulsed Drain Current (IDM):** -22A  
- **Power Dissipation (PD):** 2.5W  
- **On-Resistance (RDS(on)):**  
  - 0.045Ω (max) at VGS = -10V  
  - 0.060Ω (max) at VGS = -4.5V  
- **Threshold Voltage (VGS(th)):** -1V to -2V  
- **Total Gate Charge (Qg):** 12nC (typical)  
- **Operating Junction Temperature (TJ):** -55°C to +150°C  

### **Descriptions:**
- **Package:** SO-8 (Surface Mount)  
- **Technology:** TrenchFET® (Siliconix proprietary technology for low RDS(on))  
- **Application:** Designed for power management in portable electronics, battery protection, load switching, and DC-DC conversion.  

### **Features:**
- **Low On-Resistance:** Enhances efficiency in power applications.  
- **Fast Switching Speed:** Suitable for high-frequency switching.  
- **Logic-Level Gate Drive:** Can be driven by low-voltage control signals (as low as 4.5V).  
- **Avalanche Energy Rated:** Provides robustness in inductive load applications.  
- **Lead-Free & RoHS Compliant:** Meets environmental standards.  

This information is based on the manufacturer's datasheet for the SI4505DY.

Application Scenarios & Design Considerations

N- and P-Channel MOSFET

Alternative Part Number

  • FDS6680A --: N-channel MOSFET in SO-8 with comparable 30V rating and low on-resistance, widely available and pin-compatible for switching applications.
  • IRF7413 --: SO-8 N-channel MOSFET with similar voltage and current capability, commonly used as a drop-in replacement in power switching circuits.
  • AO4406 --: 30V N-channel MOSFET in SO-8 package with low RDS(on), suitable alternative when the original Siliconix part is unavailable.

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