The IRFB4115 is a high-current-carrying N-channel MOSFET. It can handle a voltage of 150 V. This MOSFET is available in TO-220AB packaging. This article shares the information regarding the MOSFET specifications, equivalent number for replacement, and other important information’s to help electronics enthusiasts and technicians who are actively searching the whole details in one place.
IRFB4115 MOSFET Technical Specifications
- Transistor Type: N-Channel
- Drain-to-Source Voltage is 150V max
- Continuous Drain Current is up to 104A at 25°C
- Pulsed Drain Current is 420A
- Drain to Source On-State Resistance is 9.3mΩ typical, 11mΩ max
- Gate-to-Source Voltage is approximately +/-20V max
- Max Power Dissipation is 380W
- Operating Junction Temperature is between -55°C and +175°C
IRFB4115 Pinout Configuration and Pinout Diagram
How to Count the Pins: Hold the MOSFET flat numbering side facing to you and the three pins are pointing downward. Then count the pin number from left to right as 1, 2 and 3. The First number pin is Gate second is Drain and third is Source pin.
| Pin Number | Pin Configuration |
|---|---|
| 1 | Gate |
| 2 | Drain |
| 3 | Source |
Equivalent MOSFET’s for Replacement
IRFB4115PBF, TK100E15N1 and STP110N15F7 are the suitable MOSFET numbers can use. (Note: The replacement option is not about limited, only i gives you example.) A simple list of table if given below for quick reference to compare.
| Part Number | Voltage (VDSS) | Current (ID) | RDS(on) | Package Style |
|---|---|---|---|---|
| IRFB4115 (Original) | 150 V | 104 A | 11 mΩ | TO-220AB |
| TK100E15N1 | 150 V | 100 A | 9.4 mΩ | TO-220 |
| IPP075N15N3G | 150 V | 100 A | 7.5 mΩ | TO-220 |
| STP110N15F7 | 150 V | 110 A | 12 mΩ | TO-220 |
How IRFB4115 N Channel MOSFET Working as a Switch
The IRFB4115 is N channel MOSFET and pins are gate, drain and source. The control voltage in gate pin is determines the MOSFET to turn ON or OFF. IN ON condition large current is passing through the MOSFET and OFF state no current passes. In ON state it can handle up to 104A current through it.
Gate Drive Requirement
This MOSFET requires 10V on the gate pin for fully turn ON the MOSFET and achieve 9.3 low on resistance. If you are connecting the MOSFET directly from the microcontroller is not fully turn ON the MOSFET. This will heat up MOSFET very fast. The micro controller produce 3.3 to 5V max output this is not enough. To boost the voltage you can use a totem pole driver circuit.
