{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BSO303SPH","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BSO303SPH","canonicalUrl":"https://icboms.com/infineon/BSO303SPH","factsUrl":"https://icboms.com/api/mcp/products/BSO303SPH","rawCanonicalId":null},"summary":{"shortDescription":"Infineon SIPMOS P-Channel MOSFET, BSO303SPH, 30V Vdss, 7.2A continuous drain, 21mOhm Rds(on) at 10V Vgs, SOIC-8 surface mount, -55°C to 150°C junction temperature.","salesMarkdown":"## P-channel 30V MOSFET in SOIC-8 — what the 21 mΩ Rds(on) means for your load switch Its headline on-resistance of 21 mΩ at 10 V gate drive is the figure a designer reaches for first when sizing a high-side load switch or reverse-polarity protection circuit — lower Rds(on) means less I²R loss and a cooler board. ## Temperature range and package — where this part fits The SOIC-8 footprint (PG-DSO-8-1 supplier package) is a common land pattern, so a board designed for any standard SOIC-8 MOSFET can take this part without a layout change. Power dissipation is limited to 1.56 W at 25°C ambient, so continuous high-current operation needs attention to copper area and airflow — this is not a TO-220 replacement for a 50 W load. ## Gate charge and switching — what 54 nC tells the driver designer The maximum gate charge at 10 V is 54 nC. That is a moderate figure for a P-channel in an SOIC-8 — a standard gate driver with 1 A peak output can switch it in the tens of nanoseconds. The input capacitance of 2330 pF at 25 V drain is consistent with the gate charge; together they define the driver's peak current requirement and the switching loss at frequency. For a 100 kHz PWM load switch, the gate-drive loss is negligible; at 500 kHz or above, the driver's sourcing capability starts to matter.","metaTitle":"Infineon BSO303SPH SIPMOS P-Channel MOSFET, 30V 7.2A 21mΩ","metaDescription":"Infineon BSO303SPH P-channel MOSFET in SOIC-8. 30V drain, 7.2A continuous, 21mΩ Rds(on) at 10V. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"SIPMOS®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"SIPMOS®","Package":"Bulk","FET Type":"P-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"2V @ 100µA","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"21mOhm @ 9.1A, 10V","Power Dissipation (Max)":"1.56W (Ta)","Supplier Device Package":"PG-DSO-8-1","Gate Charge (Qg) (Max) @ Vgs":"54 nC @ 10 V","Drain to Source Voltage (Vdss)":"30 V","Input Capacitance (Ciss) (Max) @ Vds":"2330 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"4.5V, 10V","Current - Continuous Drain (Id) @ 25°C":"7.2A (Ta)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.32","stockQuantity":0,"priceTiers":[{"qty":938,"price":"$0.32000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/894ebce3946985566ae8f51c802512ee.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BSO303SPH an equivalent for IRF9310?","answer":"Both are P-channel MOSFETs in SOIC-8 with a 30 V drain rating, but the BSO303SPH has a lower Rds(on) of 21 mΩ versus the IRF9310's typical 30 mΩ, which means less conduction loss at the same current. The gate threshold and drive voltage ranges differ, so check the Vgs(th) and gate charge curves in each datasheet before dropping one into the other's footprint — the pinout is the same, but the switching behaviour may shift."},{"question":"What is the Rds(on) of BSO303SPH?","answer":"The maximum on-resistance is 21 mΩ at a drain current of 9.1 A and a gate-to-source voltage of 10 V. At lower gate drive (4.5 V) the Rds(on) is higher — the datasheet curve should be consulted for the exact value at your operating point."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BSO303SPH","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BSO303SPH when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}