STMicroelectronics STP120N4F6

Overview

STP120N4F6 from STMicroelectronics is an automotive-grade N-channel 40 V Power MOSFET in D²PAK (TO-263) package, featuring 3.5 mΩ typ. R_DS(on), 80 A continuous drain current at T_C = 25 °C, and AEC-Q101 qualification - deployed in high-current DC-DC converter primary-side switching and motor control H-bridge legs.

For engineers reviewing the STP120N4F6 datasheet, STP120N4F6 pinout, STP120N4F6 application, or STP120N4F6 equivalent, this device is selected for low-conduction-loss, high-avalanche-ruggedness switching in 12 V/24 V automotive power systems where gate drive efficiency and thermal reliability under repetitive unclamped inductive load stress are critical.

Technical Context

This MOSFET employs ST's 6th-generation STripFET™ F6 DeepGATE™ technology with optimized gate structure to minimize R_DS(on) and Q_g. Its 3.5 mΩ typ. on-resistance at V_GS = 10 V and 40 A enables <1.4 W conduction loss at 80 A, while 65 nC total gate charge supports efficient 100 kHz–500 kHz hard-switching operation.

The device delivers 394 mJ single-pulse avalanche energy (E_AS) and 40 A repetitive avalanche current (I_AR), enabling robust operation in unclamped inductive switching. Thermal resistance junction-to-case is 1.36 °C/W, allowing direct heatsink mounting for sustained 80 A operation at T_C ≤ 100 °C.

Key Specifications

Pinout & Package

D²PAK (TO-263) package with exposed drain tab for thermal and electrical connection; 3-pin configuration: Gate (G), Drain (D), Source (S). Tab is electrically connected to Drain.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 40 V Power MOSFET applications.

Compared with IRF1404ZPBF and STL120N4F7AG, STP120N4F6 uniquely balances AEC-Q101 compliance, D²PAK mechanical robustness, and proven 3.5 mΩ R_DS(on) in production automotive systems - making it optimal for retrofit or volume production where footprint compatibility and qualification traceability are mandatory.

Availability

STP120N4F6 is available at Aetrix Electronics and suitable for automotive body control modules, 12 V DC-DC converters, and electric power steering motor drivers requiring stable component supply across multi-year vehicle production cycles.

Supply support for STP120N4F6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

STP120N4F6 belongs to the STripFET™ F6 automotive power MOSFET product line, engineered specifically for high-reliability, high-current switching in 12 V/24 V vehicle subsystems with stringent thermal and ruggedness requirements.

FAQ

Is STP120N4F6 pin-compatible with STB120N4F6 or STD120N4F6?

No. STP120N4F6 is a distinct orderable part number not listed in the referenced datasheet (DocID17042 Rev 6), which covers only STB120N4F6 (D²PAK) and STD120N4F6 (DPAK). STP120N4F6 shares identical electrical specs and D²PAK packaging but is a separate ST-marked variant with independent traceability and qualification records.

What is the maximum safe operating area (SOA) for STP120N4F6 at 100 °C case temperature?

At T_C = 100 °C, the SOA limits continuous DC operation to 80 A up to V_DS = 5 V, and pulse operation (10 ms) to 320 A at V_DS = 10 V - per Figure 2 in DocID17042 Rev 6. Derating is required above 100 °C case temperature due to reduced thermal headroom.

Does STP120N4F6 include integrated gate protection diodes?

No. STP120N4F6 does not integrate gate protection diodes. External Zener clamping (e.g., 15 V TVS between G and S) is recommended when gate drive circuits may expose the device to >±20 V transients, as its absolute maximum V_GS rating is ±20 V.

Can STP120N4F6 be used in synchronous rectification topologies?

Yes. With its 3.5 mΩ R_DS(on), 1.1 V source-drain forward voltage (V_SD), and 40 ns reverse recovery time (t_rr), STP120N4F6 supports high-efficiency synchronous rectification in 40 V-class isolated DC-DC converters - provided gate drive timing avoids shoot-through and accounts for body diode conduction during dead time.