STL140N4F7AG - 40V N-Channel Power MOSFET | STMicroelectronics
MPN: STL140N4F7AG β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.65 | $16.50 |
| 100 | $1.35 | $135.00 |
| 500 | $1.15 | $575.00 |
| 1,000 | $0.95 | $950.00 |
Drop-in alternatives for STL140N4F7AG β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STL140N4F7
β Drop-Inπ Reference alternative (not in catalog)
STL140N4F7AG-1
β Drop-Inπ Reference alternative (not in catalog)
IPB140N04S4-02
β Drop-Inπ Reference alternative (not in catalog)
IRF1404Z
β Drop-Inπ Reference alternative (not in catalog)
FDMS8880
β Drop-Inπ Reference alternative (not in catalog)
STL140N4F7AG Maximum Ratings & Electrical Characteristics
| Polarity | N-Channel |
| Drain-Source Voltage (VDS) | 40 V |
| Continuous Drain Current (ID) | 140 A |
| On-State Resistance (RDS(on)) | 3.2 mOhm @ VGS=10V |
| Gate-Source Voltage (VGS) | Β±20 V |
| Gate Threshold Voltage (VGS(th)) | 2.5 V (min) |
| Total Gate Charge (Qg) | 60 nC |
| Input Capacitance (Ciss) | 4500 pF |
| Output Capacitance (Coss) | 800 pF |
| Reverse Transfer Capacitance (Crss) | 150 pF |
| Power Dissipation (PD) | 150 W |
| Operating Temperature Range | -55Β°C to +175Β°C |
| Package | PowerFLAT 5x6 |
| Mounting Type | Surface Mount |
| AEC-Q101 Qualified | Yes |
| RoHS Compliant | Yes |
STL140N4F7AG Pin Configuration
| Pin 1 | G β Gate |
| Pin 2 | S β Source |
| Pin 3 | S β Source |
| Pin 4 | S β Source |
| Pin 5 | D β Drain |
| Pin 6 | D β Drain |
| Pin 7 | D β Drain |
| Pin 8 | D β Drain |
| Pin 9 | D β Drain |
| Pin 10 | D β Drain |
| Pin 11 | D β Drain |
| Pin 12 | D β Drain |
Safe Operating Area
Typical Applications
STL140N4F7AG is suitable for 6 applications: Automotive Electric Power Steering, Battery Management System (BMS), DC-DC Converter (Synchronous Buck), Motor Control (Industrial), Load Switch, Power Supply (Server/Telecom).
Automotive Electric Power Steering
The STL140N4F7AG is ideal for electric power steering (EPS) systems due to its high current capability (140A) and low RDS(on) of 3.2 mOhm, which minimizes power losses in the motor drive circuit. In an EPS system, the MOSFET is used in the H-bridge inverter that drives the steering assist motor. The low on-resistance ensures efficient operation, reducing heat generation and improving overall system reliability. The AEC-Q101 qualification guarantees performance under the harsh automotive environment, including temperature extremes and vibration. The fast body diode helps in freewheeling current management during PWM switching, reducing ringing and EMI. The PowerFLAT 5x6 package allows for compact PCB layouts, essential in space-constrained engine compartments. With a gate charge of 60 nC, the device can be driven efficiently at moderate switching frequencies, balancing efficiency and cost. The wide operating temperature range (-55Β°C to +175Β°C) ensures operation in both cold starts and under-hood heat. Overall, the STL140N4F7AG provides the robustness and efficiency required for EPS applications.
Recommended
Battery Management System (BMS)
In battery management systems, the STL140N4F7AG is used for cell balancing and load switching. Its 40V rating is suitable for 12V to 24V battery packs, and the 140A current capability handles high discharge currents in power tools or electric vehicles. The low RDS(on) reduces voltage drop across the MOSFET, improving energy efficiency and extending battery life. The device's fast switching characteristics enable efficient PWM control for cell balancing, minimizing heat generation. The AEC-Q101 qualification ensures reliability in automotive BMS applications. The PowerFLAT 5x6 package with exposed pad aids in thermal management, crucial for high-current paths. The gate charge of 60 nC allows for simple gate drive circuits, reducing component count. The device's avalanche ruggedness, though not specified in the provided data, is typically robust in ST's F7 series, making it suitable for inductive load switching. Overall, the STL140N4F7AG provides a reliable and efficient solution for BMS power path management.
Recommended
DC-DC Converter (Synchronous Buck)
The STL140N4F7AG is well-suited for synchronous buck converters, where it serves as the high-side or low-side switch. Its low RDS(on) of 3.2 mOhm minimizes conduction losses, while the low gate charge (60 nC) enables high-frequency operation, reducing the size of magnetic components. In a typical 12V to 5V buck converter, the MOSFET handles high current with minimal voltage drop, improving efficiency. The fast body diode reduces dead-time losses, and the low reverse recovery charge minimizes switching losses. The PowerFLAT 5x6 package provides excellent thermal performance, allowing continuous operation at high currents. The device's wide gate drive range (4.5V to 20V) makes it compatible with various controller ICs. The AEC-Q101 qualification is beneficial for automotive-grade converters. Overall, the STL140N4F7AG enhances converter efficiency and power density, making it ideal for server power supplies, telecom, and automotive applications.
Recommended
Motor Control (Industrial)
In industrial motor control, the STL140N4F7AG is used in three-phase inverters for driving AC or BLDC motors. Its 140A current rating and 40V voltage rating are suitable for low-voltage motor drives. The low RDS(on) reduces heat generation in the power stage, allowing for smaller heatsinks. The fast switching speed enables high PWM frequencies, improving motor torque ripple and acoustic noise. The device's ruggedness, including avalanche capability, ensures reliable operation under inductive load switching. The PowerFLAT 5x6 package is easy to mount on PCBs with proper thermal vias. The gate charge of 60 nC allows for efficient gate drive design. The wide operating temperature range supports industrial environments. Overall, the STL140N4F7AG provides a cost-effective and efficient solution for industrial motor drives, from pumps to conveyor systems.
Recommended
Load Switch
The STL140N4F7AG can be used as a high-side load switch in various systems, providing power distribution and protection. Its low RDS(on) ensures minimal voltage drop, maintaining supply voltage integrity. The device's fast switching allows for quick power cycling, useful in power sequencing. The 40V rating is suitable for 12V and 24V rails, and the 140A current capability handles high inrush currents. The AEC-Q101 qualification makes it suitable for automotive load switching, such as lighting or infotainment. The PowerFLAT 5x6 package with exposed pad aids in thermal dissipation during high-current operation. The gate drive requirements are simple, and the device can be driven directly by logic-level signals. Overall, the STL140N4F7AG provides a robust and efficient solution for load switching in automotive and industrial systems.
Recommended
Power Supply (Server/Telecom)
In server and telecom power supplies, the STL140N4F7AG is used in the power stage of high-efficiency converters, such as LLC resonant or phase-shifted full-bridge topologies. Its low RDS(on) and fast switching reduce losses, improving overall efficiency and power density. The device's 40V rating is suitable for intermediate bus voltages (12V or 24V). The low gate charge enables high-frequency operation, reducing transformer size. The PowerFLAT 5x6 package allows for compact PCB layouts, essential in high-density power supplies. The device's thermal performance, with a junction-to-case thermal resistance of 1.1 C/W, ensures reliable operation at high power levels. The AEC-Q101 qualification is not required for non-automotive applications, but the device's robustness is beneficial. Overall, the STL140N4F7AG is an excellent choice for high-efficiency power supplies, meeting the demands of modern data centers and telecom infrastructure.
Recommended
Recommended Products Summary
Engineering reference data for STL140N4F7AG β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STL140N4F7 | IPB140N04S4-02 | IRF1404Z | FDMS8880 |
|---|---|---|---|---|---|
| Package | PowerFLAT 5x6 | PowerFLAT 5x6 | PowerFLAT 5x6 | PowerFLAT 5x6 | PowerFLAT 5x6 |
| Brand | STMicroelectronics | STMicroelectronics | Infineon | Infineon | onsemi |
| Drain-Source Voltage (VDS) | 40 V | 40 V | 40 V | 40 V | 40 V |
| Continuous Drain Current (ID) | 140 A | 140 A | 140 A | 140 A | 100 A |
| On-State Resistance (RDS(on)) | 3.2 mOhm | 3.2 mOhm | 3.5 mOhm | 3.9 mOhm | 4.5 mOhm |
| Gate Charge (Qg) | 60 nC | 60 nC | 65 nC | 70 nC | 50 nC |
| AEC-Q101 Qualified | Yes | No | Yes | Yes | No |
| Power Dissipation (PD) | 150 W | 150 W | 150 W | 140 W | 120 W |
Key Differentiators
- Ultra-low RDS(on) of 3.2 mOhm (vs IRF1404Z)
- AEC-Q101 automotive qualification (vs STL140N4F7)
- Higher current rating than FDMS8880 (vs FDMS8880)
Design Notes
The STL140N4F7AG has a maximum power dissipation of 150W. At high currents, ensure adequate heat sinking. The PowerFLAT 5x6 package has a junction-to-case thermal resistance of 1.1 C/W. Use a large copper area on the PCB and thermal vias to dissipate heat effectively. For continuous operation at 140A, the power loss is I^2*R = 140^2 * 0.0032 = 62.7W, which would require a heatsink or forced air cooling to keep junction temperature below 175Β°C.
Place the gate drive circuit close to the MOSFET to minimize gate loop inductance. Use a gate resistor (e.g., 10 ohm) to control switching speed and reduce EMI. Ensure the source and drain connections have low-inductance paths, using multiple vias for the exposed pad. For high-current paths, use wide copper traces or copper pours to minimize resistance and inductance.
Do not exceed the maximum gate-source voltage of Β±20V. Use a gate clamp or zener diode if necessary. Ensure the gate drive voltage is sufficient to fully enhance the MOSFET (typically 10V for lowest RDS(on)). Avoid operating in the linear region for extended periods, as this can cause excessive power dissipation. Also, consider the body diode's reverse recovery in bridge applications; the STL140N4F7AG has a fast body diode, but external snubbers may be needed for high dV/dt.
Compliance Information
AEC-Q101 qualified, RoHS compliant, halogen-free. Compliance data based on STMicroelectronics product page.
