Infineon Technologies SPB80N03S2-03

Overview

SPB80N03S2-03 from Infineon Technologies is an N-channel enhancement-mode OptiMOS™ power MOSFET in TO263-3 (D²PAK) package, rated for 30 V V_DS, 80 A continuous drain current at T_C = 25 °C, and 3.1 mΩ max R_DS(on) at V_GS = 10 V. It features 175 °C maximum junction temperature, avalanche rating (810 mJ single-pulse), and dv/dt ruggedness (6 kV/µs), enabling use in high-current DC-DC converters and motor control H-bridges.

For engineers reviewing the SPB80N03S2-03 datasheet, SPB80N03S2-03 pinout, SPB80N03S2-03 application, or SPB80N03S2-03 equivalent, key selection criteria include R_DS(on) vs. temperature stability, gate charge (Q_g = 110–150 nC), thermal resistance (R_thJC = 0.3–0.5 K/W), and reverse diode performance (V_SD = 0.9–1.3 V at 80 A).

Technical Context

This MOSFET employs trench-gate silicon technology optimized for low conduction and switching losses, with a gate threshold voltage (V_GS(th)) of 2.1–4.0 V and plateau voltage of 5.2 V. Its dynamic characteristics-C_iss = 5280–7020 pF, Q_gd = 45–68 nC, and t_r/t_f = 325–490 ns / 110–160 ns-support high-frequency synchronous rectification up to 500 kHz.

The integrated body diode exhibits fast recovery (t_rr = 65–80 ns, Q_rr = 87–110 nC) and low forward voltage (V_SD ≤ 1.3 V), reducing commutation losses in half-bridge and LLC resonant topologies where reverse conduction occurs during dead-time intervals.

Key Specifications

Pinout & Package

SPB80N03S2-03 uses the P-TO263-3-2 (D²PAK) surface-mount package with exposed drain pad for thermal conduction. The case is electrically connected to the drain terminal.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF8720PbF and STL220N3LLH6, SPB80N03S2-03 delivers superior thermal robustness (0.3 K/W R_thJC vs. ≥0.8 K/W), guaranteed avalanche capability, and proven 175 °C operation-making it optimal for high-reliability industrial and automotive power stages where thermal margin and fault tolerance are non-negotiable.

Availability

SPB80N03S2-03 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial motor drives, and server VRMs requiring stable component supply and long-term lifecycle support.

Supply support for SPB80N03S2-03 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 management, automotive electronics, and industrial control ICs, with global manufacturing and R&D infrastructure.

The OptiMOS™ product line targets high-efficiency power conversion applications, emphasizing low R_DS(on), fast switching, and ruggedness for automotive, industrial, and computing power supplies.

FAQ

What is the maximum allowable gate-source voltage for SPB80N03S2-03?

The absolute maximum V_GS is ±20 V per datasheet specifications. Operation above +15 V or below –10 V risks permanent gate oxide damage. For reliable enhancement, V_GS should be maintained between 4.5 V (minimum for partial conduction) and 10 V (recommended for full R_DS(on) specification). Gate driver circuits must include clamping or Zener protection to prevent overshoot during fast switching.

Does SPB80N03S2-03 require a heatsink in typical operation?

Yes-thermal modeling shows that at 80 A continuous current and 300 W power dissipation, the junction-to-case thermal resistance (0.3–0.5 K/W) necessitates a heatsink or large copper pour to maintain T_j ≤ 175 °C. Without external cooling, ambient temperature must remain below 45 °C to avoid thermal shutdown; PCB layout with ≥6 cm² 70 µm copper area on drain pad is mandatory per datasheet recommendations.

Can SPB80N03S2-03 be used in parallel configurations?

Yes-its positive temperature coefficient of R_DS(on) (increasing with T_j) enables inherent current sharing. However, layout symmetry (matched gate and source inductance), individual gate resistors (≥5 Ω), and Kelvin source connections are required to prevent oscillation and unequal current distribution. Parallel operation beyond two devices demands careful transient thermal analysis due to differing Z_thJC curves.

Is the body diode suitable for continuous reverse conduction?

The integrated body diode supports continuous forward current up to 80 A at T_C = 25 °C, but its V_SD (0.9–1.3 V) and Q_rr (87–110 nC) make it less efficient than discrete Schottky diodes in high-frequency freewheeling. It is qualified for repetitive reverse conduction in motor drive and synchronous rectifier applications, provided thermal limits are observed and dead-time is minimized to reduce reverse recovery losses.