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IRF740 N-Channel Power Mosfet

[Click the image to enlarge it]

The IRF740 is an N-Channel Power MOSFET which can switch loads upto 400V.

 

Pin Configuration

Pin Number

Pin Name

Description

1

Source

Current flows out through Source (maximum 10A)

2

Gate

Controls the biasing of the MOSFET (Threshold voltage 10V)

3

Drain

Current flows in through Drain

 

Features

·         N-Channel Power MOSFET

·         Continuous Drain Current (ID): 10A

·         Gate threshold voltage (VGS-th) is 10V (limit = ±20V)

·         Drain to Source Breakdown Voltage: 400V

·         Drain Source Resistance (RDS) is 0.55 Ohms

·         Rise time and fall time is 27nS and 24nS

·         Available in To-220 package

 

Note: Complete technical details can be found at the IRF740 datasheet linked at the bottom of the page

 

Alternatives for IRF740

IRFB13N50A, UF450A, SSF13N15

 

Other N-channel MOSFETS

BSS138, IRF520, 2N7002, BS170, BSS123, IRF3205, IRF1010E

 

About IRF740 MOSFET

The IRF740 is an N-Channel Power MOSFET which can switch loads upto 400V. The Mosfet could switch loads that consume upto 10A, it can turned on by provide a gate threshold voltage of 10V across the Gate and Source pin. Since the mosfet is for switching high current high voltage loads it has a relatively high gate voltage, hence cannot be used directly with a I/O pin of a CPU. If you prefer a mosfet with low gate voltage then try IRF540N or 2N7002 etc.

One considerable disadvantage of the IRF740 Mosfet is its high on-resistance (RDS) value which is about 0.55 ohms. Hence this mosfet cannot be used in applications where high switching efficiency is required. The Mosfet requires a driver circuit to provide 10V to the gate pin of this Mosfet the simplest driver circuit can be build using a transistor. It is relatively cheap and has very low thermal resistance, added to this the mosfet also has good switching speeds and hence can be used in DC-DC converter circuits.

 

Applications

  • Switching high power devices
  • Inverter Circuits
  • DC-DC Converters
  • Control speed of motors
  • LED dimmers or flashers
  • High Speed switching applications

 

2D model of the component

If you are designing a PCB or Perf board with this component then the following picture from the IRF740 Datasheet will be useful to know its package type and dimensions.

 IRF740 N-Channel Power Mosfet 2-D Model

 

 

 

Component Datasheet