Description: IRF840 IRF 840 500V 8A 75W TO-220 N-Channel Power MOSFET 3 Pin IC Power Transistor Field Effect MOSFET IC Electronic Components

TheIRF840is a fast switching high voltageN-Channel MOSFETwith a low on-state resistance. The MOSFET has a maximum drain to source voltage of 500V. The MOSFET will have a drain to source internal resistance of 1.5Ω when triggered with 10V gate voltage.

Pin Configuration:

Features:

• N-Channel Power MOSFET
• Continuous Drain Current (ID): 8A
• Gate threshold voltage (VGS-th) is 10V (limit = ±20V)
• Drain to Source Breakdown Voltage: 500V
• Drain Source Resistance (RDS) is 1.5 Ohms
• Rise time and fall time is 16nS and 16nS
• Available in To-220 package

Technical Specifications:

• Package Type:TO-220
• Transistor Type:N Channel
• Max Voltage Applied From Drain to Source:500V
• Max Gate to Source Voltage Should Be: ±20V
• Max Continues Drain Current is :5A
• Max Pulsed Drain Current is:18A
• Max Power Dissipation is:75W
• Drain to Source Resistance in ON State (RDS on):1.500Ω
• Max Storage & Operating temperature Should Be:-55 to +150 Centigrade

About IRF840 MOSFET:

The IRF840 is an N-Channel Power MOSFET which can switch loads upto 500V with a drain current of 8A. If you need a relatively high current Mosfet you can check the IRF840. Both Mosfet has a gate threshold voltage of 10V across the Gate and Source pin with a on-state resistance of 1.5Ω. 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 theIRF840 Mosfetis its high on-resistance (RDS) value which is about 1.5 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

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