STP55NF06 Power MOSFET: Pinout, Datasheet, Equivalent

The STP55NF06 MOSFET  is an N-channel power MOSFET with a wide range of applications. This MOSFET is notable for its high drain current and fast switching speed, as well as its low on-resistance, which boosts the device's efficiency. According to the datasheet, this MOSFET will begin to conduct at a low gate voltage of 10V, but it will reach its maximum drain current at a gate voltage of 20V. This MOSFET can be driven by a microcontroller or a logic-level device because it is designed for high-power applications.

Because this MOSFET has a low gate threshold voltage of only 4V, it can be turned on using just 5V from a GPIO pin on a microcontroller like the  Arduino. However, this does not imply that the MOSFET will come on completely with just 5V; it requires roughly 10V to switch on completely and deliver a continuous current of 27A. If you're looking for a MOSFET to utilize with a microcontroller, logic-level MOSFETs like the 2N7002 or IRLZ44N are a good choice. Alternatively, you can use a transistor and a driver circuit to provide 10V to the gate pin of this MOSFET. The frequency response of this MOSFET is quite good hence it can be used in DC-DC converter circuits also.

Because the MOSFET is made up of a capacitor, there will be no voltage in the gate under normal circumstances and without external influence, which is why we need to pull the gate of the MOSFET to the ground to prevent false triggering of the circuit. As we all know, MOSFETs are voltage-controlled devices, which means that to turn them off, we only need to provide voltage to the gate and no current should flow through the MOSFET.

STP55NF06 Symbol

STP55NF06 Footprint

STP55NF06 3D Model

• N-Channel Power MOSFET

• Continuous Drain Current (ID): 35A

• Pulsed Drain Current (ID-peak) is 50A

• Drain to Source Breakdown Voltage: 60V

• Drain Source Resistance (RDS) is 0.018 Ohms

• The gate threshold voltage (VGS-th) is 20V (max)

• Rise time and the fall time is 50nS and 15nS

• Input Capacitance 1300pF

• Output Capacitance 300pF

• Available in To-220 package

• Use in Electric Power Steering (EPS)

• Use in Anti-locking Braking System (ABS)

• Use in Wiper Control

• Use in Climate Control

• Use in Power Door

The following figure shows the test circuit of STP55NF06:

STP55NF06-Switching times test circuit for resistive load

STP55NF06-Gate charge test circuit

Because MOSFETs are voltage-controlled devices, only a minimum voltage is required to switch them on. The gate turn-on voltage for the STP55NF06 MOSFET is just 4V because it is an N-channel MOSFET, which means it will be on when the MOSFET's gate is linked to the supply's  VCC  and off when it is pulled down or connected to the ground.

The simulated circuit below shows how this MOSFET operates when the basic circuit's gate is connected to the ground and when the power supply's VCC is connected to it.

 STP55NF06 Circuit

When we connect the gate to the supply to switch on the MOSFET, it will stay on until the gate voltage of the MOSFET falls below the threshold voltage of the MOSFET. This voltage is less than 4V for this STP55NF06 MOSFET; below this voltage, the MOSFET will be in its ohmic state, and no current will flow through the device. As previously stated, the gate of the MOSFET should be linked to the ground using a pull-down resistor. In the example circuit, a 10K resistor is used to pull down the MOSFET's gate to the ground.

STMicroelectronics STP55NF06 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics STP55NF06.

STP55NF06 Package

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