STMicroelectronics STL12P6F6

Overview

STL12P6F6 from STMicroelectronics is a P-channel enhancement-mode Power MOSFET using STripFET™ F6 trench-gate technology, rated for 60 V V_DS, 0.13 Ω typical R_DS(on) at V_GS = 10 V, and 12 A continuous drain current at T_C = 25 °C. It operates in high-side switching configurations with low gate charge (6.4 nC) and high avalanche ruggedness, deployed in DC-DC converters and load switches for industrial power supplies.

For engineers reviewing the STL12P6F6 datasheet, STL12P6F6 pinout, STL12P6F6 application, or STL12P6F6 equivalent, key selection criteria include verified P-channel polarity handling, thermal resistance junction-to-case (2 °C/W), safe operating area under pulsed conditions, and compatibility with FR-4 PCB layouts using the PowerFLAT™ 5x6 footprint.

Technical Context

This device implements a trench-gate P-channel structure optimized for low conduction loss and fast switching. Its R_DS(on) remains stable across temperature (±20% variation from –55 to 175 °C), and its gate threshold voltage (2–4 V) enables reliable turn-on with standard logic-level drive.

The integrated source-drain diode exhibits 1.1 V forward drop at 3 A and 20 ns reverse recovery time at 150 °C, supporting synchronous rectification and inductive load switching. Dynamic parameters-including C_iss = 340 pF, Q_gd = 1.7 nC, and t_f = 3.7 ns-support high-frequency operation up to 500 kHz in hard-switched topologies.

Key Specifications

Pinout & Package

STL12P6F6 is housed in a surface-mount PowerFLAT™ 5x6 package with an exposed drain pad on the bottom side for thermal and electrical connection. The package features four terminals arranged in a single row, with Pin 1 identified by a notch or marking on the top silkscreen.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel power switching applications.

Compared with IRF9540NPbF and DMG2305UVT, STL12P6F6 uniquely balances 60 V rating, 12 A current, sub-0.15 Ω on-resistance, and surface-mount thermal performance-making it optimal for modern high-density, medium-power industrial switching where TO-220 is too large and SOT-23 is too weak.

Availability

STL12P6F6 is available at Aetrix Electronics and suitable for industrial DC-DC converters, automotive load switches, and server VRM high-side switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for STL12P6F6 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STL12P6F6 belongs to the STripFET™ F6 Power MOSFET product line, engineered specifically for high-efficiency, high-reliability power conversion in space-constrained applications demanding low R_DS(on), fast switching, and robust thermal performance.

FAQ

What is the correct gate drive polarity for STL12P6F6?

The STL12P6F6 is a P-channel MOSFET, so the gate must be driven negative relative to the source to turn on. For example, with source at +24 V, applying 0 V to the gate yields V_GS = –24 V, fully enhancing the device. A gate driver capable of sinking current and swinging below source potential is required-standard N-channel drivers cannot be used directly without level shifting.

Can STL12P6F6 replace an N-channel MOSFET in the same circuit?

No-STL12P6F6 cannot directly replace an N-channel MOSFET without redesigning the gate drive and layout. Its P-channel polarity reverses voltage and current direction: the drain connects to the high-side rail, and the source ties to the load. Gate drive must swing below source potential, unlike N-channel devices that require gate voltage above drain. Layout must also accommodate the exposed drain pad as the primary thermal and high-current node.

What is the maximum PCB temperature rise when operating at 12 A continuous?

At 12 A continuous with T_C = 25 °C, power dissipation is ~1.9 W (I²R). With R_thj-pcb = 31.3 °C/W on a 15 mm², 2 oz Cu FR-4 board, junction temperature rise is ~59 °C. Adding 25 °C ambient yields T_j ≈ 84 °C-well within the –55 to 175 °C operating range. Derating begins above T_C = 100 °C, where I_D drops to 8.5 A.

Is the body diode suitable for synchronous rectification?

The intrinsic source-drain diode has V_SD = 1.1 V at 3 A and t_rr = 20 ns at 150 °C, making it usable for low-frequency freewheeling but not ideal for high-frequency synchronous rectification. Its Q_rr = 17.8 nC causes measurable recovery loss in >200 kHz designs. For true synchronous operation, an external Schottky or GaN FET is recommended to bypass the body diode entirely.