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SI4403DY from Siliconix

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SI4403DY

Manufacturer: Siliconix, VISHAY, SIL

P-Channel 2.5-V (G-S) MOSFET

Partnumber Manufacturer Quantity Availability
SI4403DY Siliconix, VISHAY, SIL 10260 In Stock

Description and Introduction

P-Channel 2.5-V (G-S) MOSFET The SI4403DY is a P-channel MOSFET manufactured by Vishay Siliconix. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Manufacturer:**  
Vishay Siliconix  

### **Specifications:**  
- **Type:** P-Channel MOSFET  
- **Drain-Source Voltage (VDSS):** -30 V  
- **Gate-Source Voltage (VGS):** ±20 V  
- **Continuous Drain Current (ID):** -5.7 A (at TC = 25°C)  
- **Pulsed Drain Current (IDM):** -20 A  
- **Power Dissipation (PD):** 2.5 W (at TA = 25°C)  
- **RDS(ON) (Max):**  
  - 0.06 Ω (at VGS = -10 V)  
  - 0.08 Ω (at VGS = -4.5 V)  
- **Threshold Voltage (VGS(th)):** -1 V to -2 V  
- **Total Gate Charge (Qg):** 12 nC (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Description:**  
The SI4403DY is a high-performance P-channel MOSFET designed for low-voltage applications requiring high efficiency and fast switching. It is commonly used in power management, DC-DC converters, and load switching circuits.  

### **Features:**  
- Low on-resistance (RDS(ON))  
- Fast switching speed  
- High current handling capability  
- Low gate charge for improved efficiency  
- Lead-free and RoHS compliant  

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

Application Scenarios & Design Considerations

P-Channel 2.5-V (G-S) MOSFET

Alternative Part Number

  • FDS4435BZ --: P-channel MOSFET in SO-8 with comparable -30V/-8A ratings and low RDS(on), a common drop-in for the SI4403DY in load-switch and power-management circuits.
  • DMP3035LPS --: P-channel enhancement-mode MOSFET in PowerDI5060/SO-8 class package with similar voltage and current capability, suitable replacement with different series naming.
  • IRF7416 --: Well-known P-channel MOSFET in SO-8 rated around -30V/-10A, widely used as an alternative to Siliconix P-channel parts in similar applications.
  • FDS6675 --: P-channel MOSFET in SO-8 with comparable voltage and current ratings, widely available and pin-compatible.
  • DMP3010LK3 --: P-channel MOSFET in SO-8 offering similar RDS(on) and current capability, suitable drop-in replacement.
  • DMP3098L --: P-channel MOSFET with similar RDS(on) and voltage rating, suitable for load-switch and power-management applications.
  • AO3401A --: P-channel MOSFET in a similar small package with comparable ratings, commonly used as an alternative in low-voltage switching designs.

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