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SI2312 from VISHAY

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SI2312

Manufacturer: VISHAY, PHILOP迪浦

20 V N-Channel Enhancement Mode MOSFET

Partnumber Manufacturer Quantity Availability
SI2312 VISHAY, PHILOP迪浦 6890 In Stock

Description and Introduction

20 V N-Channel Enhancement Mode MOSFET The SI2312 is a P-channel MOSFET manufactured by Vishay. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Drain-Source Voltage (VDS):** -20 V  
- **Gate-Source Voltage (VGS):** ±12 V  
- **Continuous Drain Current (ID):** -4.3 A (at TC = 25°C)  
- **Pulsed Drain Current (IDM):** -17 A  
- **Power Dissipation (PD):** 1.4 W (at TA = 25°C)  
- **On-Resistance (RDS(on)):**  
  - 45 mΩ (at VGS = -4.5 V, ID = -4.3 A)  
  - 55 mΩ (at VGS = -2.5 V, ID = -2.5 A)  
- **Threshold Voltage (VGS(th)):** -0.7 V to -1.5 V  
- **Total Gate Charge (Qg):** 8.5 nC (at VGS = -4.5 V)  
- **Operating Junction Temperature (TJ):** -55°C to +150°C  

### **Description:**
The SI2312 is a P-channel MOSFET designed for low-voltage, high-efficiency switching applications. It is optimized for power management in portable electronics, battery protection circuits, and load switching.

### **Features:**
- **Low On-Resistance:** Minimizes conduction losses.  
- **Fast Switching Speed:** Improves efficiency in high-frequency applications.  
- **Small Footprint:** Available in SOT-23 package for space-constrained designs.  
- **Low Gate Charge:** Reduces drive requirements and switching losses.  
- **AEC-Q101 Qualified:** Suitable for automotive applications.  

This information is based solely on Vishay's datasheet for the SI2312 MOSFET.

Application Scenarios & Design Considerations

20 V N-Channel Enhancement Mode MOSFET

Alternative Part Number

  • BSS138 --: Widely available N-channel MOSFET in SOT-23 with similar small-signal switching characteristics, often used as a drop-in replacement for SI2312 in low-voltage logic-level applications.
  • 2N7002 --: Industry-standard N-channel MOSFET in SOT-23 with comparable voltage and current ratings, excellent cross-reference for general-purpose switching circuits.
  • AO3400 --: Low-threshold N-channel MOSFET in SOT-23 with similar RDS(on) and current capability, suitable alternative when slightly higher current handling is acceptable.
  • AO3400A --: N-channel MOSFET in SOT-23 with comparable 30V rating and low on-resistance, widely available and a common drop-in replacement for SI2312.

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