IRF4905 Pinout, Equivalent, Uses, Features, Applications and Other Info

Today we are discussing about  IRF4905 pinout, equivalent, uses, features, applications and other important details about this MOSFET device.


IRF4905 Pinout, Equivalent, Uses, Features, Applications and Other Info



Features / Technical Specifications:

  • Package Type: TO-220
  • Transistor Type: N Channel
  • Max Voltage Applied From Drain to Source: -55V
  • Max Gate to Source Voltage Should Be: ±20V
  • Max Continues Drain Current is : –74A
  • Max Pulsed Drain Current is: –260A 
  • Max Power Dissipation is: 200W
  • Minimum Voltage Required to Conduct: -2V to -4V
  • Max Storage & Operating temperature Should Be: -55 to +175 Celsius


IRF4905 Replacement and Equivalent:

AM90P06-20P, AUIRF4905


IRF4905 MOSFET Explained / Description:

IRF4905 is a P channel MOSFET designed to drive load voltage of upto -55V with the maximum load current of -74A and in pulse mode it can drive load of upto -260A. The saturation voltage or the voltage on which the transistor completely switched ON or connects drain to source is -2V to -4V. The transistor also possesses speed switching capability which makes it ideal to use in applications where high switching speed is important for example in UPS and battery management systems. Moreover the power dissipation of the transistor is 200 watt which also makes it ideal to use in amplification purposes such as in audio amplifiers.



Where We Can Use it & How to Use:

IRF4905 can be used for wide variety of switching and amplification purposes. As a switch it can be used applications like DC to DC converters, power supplies and in any application which falls under its specifications above. It can also be used to build high power audio amplifiers. It is also a reliable transistor to use in commercial and industrial applications.



Uninterruptible Power Supplies

Fast Switching Applications

Battery Charger Applications

Battery Management System Applications

Solar Battery Charging Systems

Solar Uninterruptible Power Supplies

Motor Drivers and Controllers


How to Safely Long Run in a Circuit:

To get long term performance from IRF4905 always use it atleast 20% below from its maximum ratings. The maximum continues drain current is -74A therefore do not operate load of more than -59A and the maximum drain to source voltage is -55V therefore for safety do not apply more than -44V across drain to source to drive the load. The gate to source voltage should be under ±20V. A suitable heatsink is also required with the transistor to dissipate heat during operation. The maximum operating and storing temperature should always between -55 to +175 centigrade.



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