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Infineon Technologies BSO303PH — Discrete Semiconductors

Infineon BSO303PH OptiMOS Dual P-Ch MOSFET, 30V 7A

MPNBSO303PH
End of Life

Infineon Technologies OptiMOS series, BSO303PH dual P-channel MOSFET, 30V Vdss, 7A Id, 21mOhm Rds(on), logic-level gate, PG-DSO-8 package.

$0.51Ref. price · indicative, final on quote
Infineon Technologies BSO303PH datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesOptiMOS™
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BSO303PH specifications
ParameterValue
SeriesOptiMOS™
FET type2 P-Channel (Dual)
MountingSurface Mount
Drain to source voltage30V
Current - continuous drain (Id) @ 25°C7A (Tc)
Power - max2W (Ta)
Operating temperature-55°C ~ 150°C (TJ)
PackageBulk
FET featureLogic Level Gate
Case8-SOIC (0.154\", 3.90mm Width)
Vgs(th) (Max) @ id2V @ 100µA
Rds on (Max) @ id, vgs21mOhm @ 8.2A, 10V
Gate charge (Qg) (Max) @ vgs49nC @ 10V
Input capacitance (Ciss) (Max) @ vds2678pF @ 25V

Product details

The BSO303PH: The 21mOhm max on-resistance at 8.2A, 10V gate drive means conduction losses stay under 1.3W at full rated current — the 2W package power limit at 25°C ambient leaves headroom for a 7A load in a 50°C enclosure if the PCB copper area is adequate.

Switching speed and gate drive budget

Total gate charge is 49nC at 10V — a 3.3V MCU pin sourcing 10mA charges the gate in about 5µs, so the switching transition is fast enough for a 100kHz PWM load-switch but not for a high-frequency DC-DC converter. Input capacitance is 2678pF at 25V drain bias, which sets the Miller plateau charge and the switching loss profile.

Frequently asked questions

What is the closest functional equivalent to BSO303PH?

The BSO203PH is a close peer — also a dual P-channel OptiMOS in a similar package, with 20V Vdss and 21mOhm Rds(on) at 4.5V gate drive. The BSO303PH offers higher drain-source voltage (30V vs 20V) and a slightly higher gate charge, making it the better choice for 24V bus applications.

Where can I find the datasheet for BSO303PH?

The datasheet is available from Infineon's website under the OptiMOS series. The part is fully specified in the product brief and application notes on the manufacturer's portal.