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IRF521 from IR,International Rectifier

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IRF521

Manufacturer: IR

N - CHANNEL ENHANCEMENT MODE VERTICAL DMOS POWER FETs

Partnumber Manufacturer Quantity Availability
IRF521 IR 37 In Stock

Description and Introduction

N - CHANNEL ENHANCEMENT MODE VERTICAL DMOS POWER FETs The IRF521 is a power MOSFET manufactured by various companies, including **International Rectifier (IR)**. Below are its key specifications, descriptions, and features based on available data:

### **Manufacturer Specifications (IRF521):**  
- **Type:** N-Channel Power MOSFET (HEXFET)  
- **Drain-Source Voltage (VDSS):** 100V  
- **Continuous Drain Current (ID):** 5.5A (at 25°C)  
- **Pulsed Drain Current (IDM):** 22A  
- **Gate-Source Voltage (VGS):** ±20V  
- **Power Dissipation (PD):** 43W (at 25°C)  
- **On-Resistance (RDS(on)):** 0.6Ω (max at VGS = 10V)  
- **Threshold Voltage (VGS(th)):** 2-4V  
- **Input Capacitance (Ciss):** 300pF (typ)  
- **Package:** TO-220AB  

### **Features:**  
- **High-Speed Switching:** Suitable for switching applications.  
- **Low Gate Drive Power:** Efficient for power control.  
- **Avalanche Energy Rated:** Enhanced ruggedness.  
- **Low On-Resistance:** Improves efficiency in power applications.  
- **Fully Characterized for Linear Mode Operation:** Ensures stable performance.  

### **Applications:**  
- Power supplies  
- Motor control  
- DC-DC converters  
- Switching regulators  

This information is based on historical datasheets from **International Rectifier (IR)**. For exact specifications, refer to the latest datasheet from the manufacturer.

Application Scenarios & Design Considerations

N - CHANNEL ENHANCEMENT MODE VERTICAL DMOS POWER FETs

Alternative Part Number

  • IRF9Z34N --: P-channel MOSFET in the same TO-220 package with comparable voltage and current ratings, widely available and often used as a substitute for older IRF5xx P-channel parts.
  • IRF9540N --: Popular P-channel MOSFET rated -100V/-19A in TO-220, a common drop-in replacement for legacy IR P-channel MOSFETs like the IRF521.
  • FQP47P06 --: P-channel MOSFET in TO-220 with -60V/-47A ratings, offering higher current capability and a different series naming for easy distinction from the original.

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