{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STP70NF03L","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STP70NF03L","canonicalUrl":"https://icboms.com/stmicroelectronics/STP70NF03L","factsUrl":"https://icboms.com/api/mcp/products/STP70NF03L","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STripFET™ II series, N-Channel MOSFET, 30 V, 70 A (Tc), 9.5mOhm @ 35A, 10V, ±18V Vgs, TO-220-3 through hole, -55°C ~ 175°C junction temperature.","salesMarkdown":"The STP70NF03L is a 30 V, 70 A N-channel MOSFET from ST's STripFET™ II generation, built for low-voltage power switching in a through-hole TO-220 package. The ±18 V max gate rating means standard 10 V or 12 V gate drives are fine, but logic-level 5 V drive will not achieve the minimum Rds(on) — note the drive voltage spec calls for 5 V minimum and 10 V for the best on-resistance. ## 100 W dissipation in a TO-220 — thermal planning matters The 100 W maximum power dissipation is rated at the case temperature (Tc), not ambient — a TO-220 bolted to a heatsink can handle that, but without one the junction will exceed the 175 °C absolute maximum at a fraction of that power. The 175 °C junction rating is military-grade, meaning the die itself can survive sustained high-temperature operation if the thermal path is designed for it. For a 70 A load at 9.5 mOhm, conduction loss alone is about 47 W at full current — well within the 100 W ceiling, but only if the heatsink keeps Tc under control. ## Obsolete — sourcing this part today ST has marked the STP70NF03L as obsolete. The only supply channel is the independent distribution and surplus market — broker-sourced new-old-stock or pulled inventory. Date codes will vary, and the risk of counterfeit or re-marked parts goes up when the factory pipeline is dry.","metaTitle":"STP70NF03L STripFET™ II N-Channel MOSFET, 30V 70A TO-220","metaDescription":"STP70NF03L N-channel MOSFET, 30V Vdss, 70A Id, 9.5mOhm Rds(on) at 10V. Obsolete per ST.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"STripFET™ II","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±18V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"1V @ 250µA","Base Product Number":"STP70","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"9.5mOhm @ 35A, 10V","Power Dissipation (Max)":"100W (Tc)","Supplier Device Package":"TO-220","Gate Charge (Qg) (Max) @ Vgs":"30 nC @ 5 V","Drain to Source Voltage (Vdss)":"30 V","Input Capacitance (Ciss) (Max) @ Vds":"1440 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"5V, 10V","Current - Continuous Drain (Id) @ 25°C":"70A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9bc41baecbca8850adf74206f29f73f0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STP70NF03L/alternatives.json"},"ai":{"faq":[{"question":"Is STP70NF03L obsolete?","answer":"Yes, ST has classified the STP70NF03L as obsolete. No factory production remains. The part is available only through independent distribution or surplus stock."},{"question":"What is the Rds(on) and Vgs threshold of STP70NF03L?","answer":"The maximum gate threshold voltage is 1 V at 250 µA drain current. The drive voltage range for achieving best on-resistance is 5 V to 10 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STP70NF03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STP70NF03L 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}}