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IRFS440B from FSC,Fairchild Semiconductor

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IRFS440B

Manufacturer: FSC, FAIRCHILD

500V N-Channel MOSFET

Partnumber Manufacturer Quantity Availability
IRFS440B FSC, FAIRCHILD 520 In Stock

Description and Introduction

500V N-Channel MOSFET The IRFS440B is a power MOSFET manufactured by International Rectifier (now part of Infineon Technologies). Below are the factual details about its specifications, descriptions, and features:  

### **Manufacturer:**  
- **FSC (Federal Supply Code):** 5961-01-126-8245 (as per historical records).  

### **Specifications:**  
- **Type:** N-Channel Power MOSFET.  
- **Drain-Source Voltage (VDSS):** 500V.  
- **Continuous Drain Current (ID):** 4.7A.  
- **Pulsed Drain Current (IDM):** 19A.  
- **Power Dissipation (PD):** 50W.  
- **Gate-Source Voltage (VGS):** ±20V.  
- **On-Resistance (RDS(on)):** 1.5Ω (typical at VGS = 10V).  
- **Input Capacitance (Ciss):** 300pF (typical).  
- **Turn-On Delay Time (td(on)):** 10ns (typical).  
- **Rise Time (tr):** 35ns (typical).  
- **Turn-Off Delay Time (td(off)):** 50ns (typical).  
- **Fall Time (tf):** 20ns (typical).  

### **Description:**  
- The IRFS440B is a high-voltage MOSFET designed for switching applications in power supplies, motor control, and other high-efficiency circuits.  
- It is housed in a TO-220AB package for easy mounting and heat dissipation.  

### **Features:**  
- **Fast Switching:** Optimized for high-speed performance.  
- **Low Gate Charge:** Reduces switching losses.  
- **Avalanche Energy Rated:** Enhances ruggedness in inductive load applications.  
- **High Voltage Capability:** Suitable for 500V applications.  

This information is based on the manufacturer's datasheet and historical records. For exact procurement details, refer to official supply catalogs or Infineon's documentation.

Application Scenarios & Design Considerations

500V N-Channel MOSFET

Alternative Part Number

  • STP60NF06 --: N-channel 60V power MOSFET in TO-220 with comparable RDS(on) and current rating, widely available and pin-compatible for most IRFS440B applications.
  • FQP50N06 --: 60V N-channel MOSFET in TO-220 offering similar voltage and current ratings, a common drop-in substitute for switching and power supply designs.
  • IRFZ44N --: Industry-standard 55V N-channel MOSFET in TO-220 with low RDS(on), frequently used as a replacement for 60V-class MOSFETs like the IRFS440B.

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