Infineon Technologies IPD35N12S3L24ATMA1

Overview

IPD35N12S3L24ATMA1 from Infineon Technologies is an AEC-Q101 qualified N-channel enhancement-mode power MOSFET in PG-TO252-3-11 package, rated for 120 V V_DS, 35 A continuous drain current at T_C = 25 °C, and 24 mΩ max R_DS(on) at V_GS = 10 V. It operates up to 175 °C junction temperature and is 100% avalanche tested for automotive motor control and DC-DC converter primary-side switching.

For engineers reviewing the IPD35N12S3L24ATMA1 datasheet, IPD35N12S3L24ATMA1 pinout, IPD35N12S3L24ATMA1 application, or IPD35N12S3L24ATMA1 equivalent, key selection criteria include its 2.1 K/W R_thJC, 140 A pulsed drain capability, integrated body diode with 79 ns t_rr, and MSL1 reflow compatibility - all critical for high-reliability 12 V/24 V automotive power stages.

Technical Context

This OptiMOS™-T device uses trench-based silicon technology optimized for low conduction and switching losses in hard-switched automotive applications. Its gate threshold voltage (1.2–2.4 V) enables robust 3.3 V and 5 V logic-level drive, while the 30–39 nC total gate charge supports efficient PWM operation at frequencies up to 200 kHz.

The MOSFET integrates a fast, soft-recovery body diode (Q_rr = 150 nC, t_rr = 79 ns) and exhibits stable R_DS(on) over temperature (α ≈ 0.4), enabling predictable thermal design in engine bay environments. Its SOA curve supports single-pulse avalanche energy of 175 mJ at I_D = 17 A.

Key Specifications

Pinout & Package

Package: PG-TO252-3-11 (DPAK), surface-mount, single-die, exposed drain pad for thermal and electrical connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STL135N10F7 and IRF3205PbF, IPD35N12S3L24ATMA1 uniquely delivers 120 V rating, AEC-Q101 compliance, and PG-TO252 thermal performance - making it the only viable choice for production 12 V/24 V automotive power stages requiring long-term reliability.

Availability

IPD35N12S3L24ATMA1 is available at Aetrix Electronics and suitable for electric power steering (EPS), automotive DC-DC converters, and engine control unit (ECU) load drivers requiring stable component supply across extended vehicle lifecycles.

Supply support for IPD35N12S3L24ATMA1 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 AG is a German semiconductor manufacturer specializing in power, sensor, and automotive ICs, with global manufacturing and R&D centers.

This device belongs to the OptiMOS™-T product line, engineered specifically for high-efficiency, high-reliability automotive power conversion where thermal robustness, avalanche tolerance, and AEC-Q101 compliance are mandatory.

FAQ

Is IPD35N12S3L24ATMA1 suitable for 48 V automotive systems?

Yes - its 120 V V_DS rating provides 2.5× safety margin over 48 V nominal systems, covering ISO 7637-2 load dump transients (up to 60 V) and double-battery jump-start events (up to 28 V). The 175 °C operating temperature further ensures reliability in underhood 48 V DC-DC modules.

What is the recommended PCB layout for thermal performance?

Use a minimum 6 cm² copper pour (70 µm thick, FR4) connected directly to the exposed drain pad via ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch). Place the device vertically in still air; this achieves R_thJA ≈ 40 K/W per datasheet condition - critical to sustain 35 A at T_C ≤ 100 °C.

Does this MOSFET require a gate resistor for automotive PWM operation?

Yes - a 3.5 Ω gate resistor is specified in the datasheet for dynamic characterization (t_d(on), t_r). For 20 kHz–100 kHz motor control, a 2.2–4.7 Ω resistor balances switching speed against gate oscillation and EMI; values below 2 Ω increase dV/dt-induced shoot-through risk in half-bridge configurations.

Can the body diode replace an external freewheeling diode in H-bridge designs?

Yes - its 35 A continuous forward current and 79 ns t_rr allow direct use as a synchronous rectifier. However, due to V_SD = 0.6–1.2 V at 35 A, conduction loss exceeds Schottky alternatives above 10 A; best practice is to use it only when layout constraints prohibit discrete diodes or when soft recovery is prioritized over forward drop.