IRF740 MOSFET

• IRF740 N-Channel Power Mosfet

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