Infineon Technologies IPF09N03LA

Overview

IPF09N03LA from Infineon Technologies is an N-channel logic-level power MOSFET in PG-TO252-3-23 package, rated for 25 V V_DS, 50 A continuous drain current at T_C = 25 °C, and 8.6 mΩ R_DS(on) (max) at V_GS = 10 V. It features 75 mJ single-pulse avalanche energy, 6 kV/µs di/dt ruggedness, and 175 °C maximum junction temperature-optimized for high-frequency DC/DC converters in server VRMs and POL modules.

For engineers reviewing the IPF09N03LA datasheet, IPF09N03LA pinout, IPF09N03LA application, or IPF09N03LA equivalent, key selection criteria include its low gate charge × R_DS(on) figure of merit (FOM), superior thermal resistance (R_thJC = 2.4 K/W), SMD-compatible TO252 footprint, and robust reverse diode performance (V_SD = 0.97–1.2 V at I_F = 50 A).

Technical Context

This MOSFET employs trench-based OptiMOS®2 technology to achieve enhanced switching efficiency and conduction loss balance. Its gate threshold voltage (1.2–2.0 V typ.) enables direct drive from 3.3 V or 5 V logic controllers, while the low Q_g (10–13 nC) and Q_gd (2.8–4.3 nC) support operation above 1 MHz in synchronous buck topologies.

The device integrates a fast, low-loss body diode with Q_rr ≤ 10 nC and soft recovery characteristics, critical for minimizing shoot-through losses and EMI in hard-switched converters. Thermal design is supported by validated R_thJA values (50 K/W with 6 cm² copper) and transient impedance curves up to 10 ms.

Key Specifications

Pinout & Package

IPF09N03LA uses the PG-TO252-3-23 surface-mount package (DPAK variant), with drain connected to the exposed tab for optimal thermal and electrical performance. The three terminals are arranged in standard DPAK orientation: Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.

Compared with IRLHS6242PBF and STL110N3LLH6, IPF09N03LA delivers the best trade-off between gate drive compatibility (1.2–2.0 V V_GS(th)), low FOM, and proven avalanche ruggedness-making it optimal for high-reliability, high-frequency POL designs where both efficiency and robustness are required.

Availability

IPF09N03LA is available at Aetrix Electronics and suitable for server VRMs, industrial DC/DC converters, telecom power supplies, and automotive ADAS ECUs requiring stable component supply across extended production lifecycles.

Supply support for IPF09N03LA 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with leadership in silicon and wide-bandgap power devices.

This part belongs to the OptiMOS®2 family, designed specifically for high-efficiency, high-frequency DC/DC conversion in computing, telecom, and industrial power systems where low R_DS(on), fast switching, and thermal resilience are critical.

FAQ

Is IPF09N03LA suitable for 48 V input applications?

No. Its 25 V V_DS rating limits use to ≤ 24 V nominal input systems. For 48 V bus applications, a 60–80 V rated MOSFET such as IPB070N06LG or IRLU8726 is required to maintain safe voltage margin and avalanche capability.

What is the recommended PCB layout for thermal performance?

Use ≥ 6 cm² of 70 µm thick copper on the drain pad, connected via multiple thermal vias to internal ground planes. Maintain ≥ 0.5 mm clearance from adjacent traces, and avoid placing components directly above the tab. FR4 with 40 mm × 40 mm board area achieves R_thJA = 50 K/W in still air.

Does IPF09N03LA have integrated ESD protection?

Yes. It meets HBM ESD classification per JEDEC JESD22-A114 (≥ 2 kV) and is qualified for target applications per J-STD-20. No external gate protection is required for standard handling, though a 10 Ω series gate resistor is recommended for ringing suppression in high-dI/dt layouts.

Can IPF09N03LA replace IPD09N03LA in existing designs?

Yes, with identical electrical specs and thermal performance. Both share the same die and R_DS(on)/Q_g characteristics, differing only in package variant: IPF09N03LA uses PG-TO252-3-23 (standard gull-wing leads), while IPD09N03LA uses PG-TO252-3-11 (shorter leads). Footprint compatibility must be verified per PCB land pattern.