Infineon Technologies BSO301SPHXUMA1

Overview

BSO301SPHXUMA1 from Infineon Technologies is a P-channel enhancement-mode logic-level MOSFET in PG-DSO-8 package, rated for -30 V V_DS, 8.0 mΩ R_DS(on) at V_GS = -10 V and I_D = -14.9 A, avalanche-rated, and qualified per JEDEC standards for industrial power switching applications including DC-DC converters and load switches.

For engineers reviewing the BSO301SPHXUMA1 datasheet, BSO301SPHXUMA1 pinout, BSO301SPHXUMA1 application, or BSO301SPHXUMA1 equivalent, key selection criteria include its -30 V breakdown voltage, low 8.0 mΩ on-resistance at -10 V gate drive, -14.9 A continuous drain current at 25 °C, 150 °C maximum junction temperature, and Pb-free/halogen-free compliance for high-reliability embedded power systems.

Technical Context

This MOSFET operates in enhancement mode with a gate threshold voltage of -1.0 to -2.0 V, enabling direct interface with 3.3 V and 5 V logic controllers. Its optimized charge characteristics-Q_g = -102 to -136 nC, Q_gd = -35 nC, and V_plateau = -2.5 V-support fast, controllable switching in synchronous buck topologies.

Thermal design is supported by R_thJA = 150 K/W (steady-state, minimal footprint) and R_thJS = 35 K/W, while its integrated body diode exhibits t_rr = 32–40 ns and Q_rr = -20 to -25 nC, minimizing switching losses during freewheeling in high-frequency DC-DC stages.

Key Specifications

Pinout & Package

BSO301SPHXUMA1 uses the PG-DSO-8 (Power-DSO-8) surface-mount package with exposed drain pad for thermal performance. Pin 1 is source (S), pins 2–4 are source (S), pin 5 is gate (G), pins 6–8 are drain (D). The drain-connected thermal pad must be soldered to PCB copper for effective heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF4905PbF and SI2301DDS-T1-GE3, BSO301SPHXUMA1 delivers superior power density and switching efficiency due to its 8.0 mΩ R_DS(on), PG-DSO-8 thermal design, and optimized gate charge profile-making it the preferred choice for 10–20 A industrial power stages.

Availability

BSO301SPHXUMA1 is available at Aetrix Electronics and suitable for industrial DC-DC converters, reverse polarity protection circuits, and hot-swap controller designs requiring stable component supply across extended product lifecycles.

Supply support for BSO301SPHXUMA1 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 global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

BSO301SPHXUMA1 belongs to the OptiMOS™-P P-channel power transistor family, engineered for high-efficiency, high-reliability industrial power switching where low R_DS(on), logic-level drive, and avalanche ruggedness are critical.

FAQ

What is the maximum continuous drain current for BSO301SPHXUMA1 at 70 °C ambient?

At T_A = 70 °C with minimal PCB footprint, the continuous drain current is -10 A. This derating reflects thermal limits under natural convection; using a 6 cm² copper area increases capability to -12.6 A at the same ambient temperature per datasheet Rev. 1.32.

Does BSO301SPHXUMA1 have an integrated body diode, and what are its key parameters?

Yes-it features a monolithic body diode with I_S = -2.1 A continuous forward current, V_SD = -0.82 to -1.2 V at I_F = -14.9 A and 25 °C, t_rr = 32–40 ns, and Q_rr = -20 to -25 nC. These values are measured under standardized conditions and support efficient freewheeling in synchronous rectifiers.

Can BSO301SPHXUMA1 be driven directly from a 3.3 V microcontroller GPIO?

Yes-its V_GS(th) range of -1.0 to -2.0 V and guaranteed R_DS(on) of 12.0 mΩ at V_GS = -4.5 V ensure reliable enhancement with 3.3 V logic. However, full performance (6.3 mΩ) requires -10 V gate drive, so a level-shifter or charge pump is recommended for minimum conduction loss.

What is the thermal resistance from junction to soldering point (R_thJS) for BSO301SPHXUMA1?

R_thJS is 35 K/W, measured from die junction to the soldering point on the exposed drain pad. This value assumes proper soldering of the thermal pad to a 6 cm² copper area on FR4 PCB and is critical for calculating junction temperature rise in thermally constrained layouts.