{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS3170UF","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS3170UF","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS3170UF","factsUrl":"https://icboms.com/api/mcp/products/STPS3170UF","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS3170UF, ECOPACK® Schottky diode, 170 V reverse, 3 A forward, 820 mV Vf at 3 A, Fast Recovery ≤ 500 ns, SMBflat surface-mount, -40 to 175 °C junction.","salesMarkdown":"## 170 V, 3 A — the switching loss floor The STPS3170UF is a 170 V, 3 A Schottky rectifier in the SMBflat package, part of ST's ECOPACK® series. Its forward voltage is 820 mV maximum at the full 3 A rated current — this sets the conduction loss per cycle in a continuous-current DC-DC converter or OR-ing diode application. ## 175 °C junction — thermal headroom for tight enclosures Rated junction temperature spans -40 °C to 175 °C. That 175 °C ceiling gives the designer margin when the diode sits in a confined space with limited airflow — think industrial power supplies or automotive modules where ambient air inside the housing can reach 85–105 °C. The 4 µA reverse leakage at 170 V is specified at 25 °C; leakage climbs with junction temperature, so the thermal budget must account for the self-heating at full load. ## SMBflat — low-profile surface-mount footprint The SMBflat (DO-221AA) package is a leadless, flat-lead SMD variant. It sits lower than a standard SMB, which helps in board-edge clearance or when the PCB slides into a card guide. The surface-mount assembly is reflow-compatible; no through-hole staking step. The flat leads also reduce the parasitic inductance loop compared to a gull-wing SMC, a secondary benefit for the switching node of a 100 kHz+ converter. ## Active production, ROHS3 — no LTB risk Lifecycle status is Active. ROHS3 compliant. The ECOPACK® designation means the device meets ST's lead-free and halogen-free material declaration.","metaTitle":"STPS3170UF Schottky Diode, 170V 3A, SMBflat, Active","metaDescription":"STPS3170UF Schottky rectifier: 170V reverse, 3A forward, 820mV Vf at 3A, 175°C junction. SMBflat surface-mount. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"ECOPACK®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"ECOPACK®","Package":"Tape & Reel (TR) Cut Tape (CT)","Technology":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-221AA, SMB Flat Leads","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS3170","Capacitance @ Vr, F":"-","Supplier Device Package":"SMBflat","Current - Reverse Leakage @ Vr":"4 µA @ 170 V","Voltage - DC Reverse (Vr) (Max)":"170 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"-40°C ~ 175°C","Voltage - Forward (Vf) (Max) @ If":"820 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","priceTiers":[{"qty":1,"price":"$0.60000","currency":"USD"},{"qty":10,"price":"$0.51600","currency":"USD"},{"qty":100,"price":"$0.35900","currency":"USD"},{"qty":500,"price":"$0.28028","currency":"USD"},{"qty":1000,"price":"$0.22781","currency":"USD"},{"qty":2000,"price":"$0.20365","currency":"USD"},{"qty":5000,"price":"$0.19329","currency":"USD"},{"qty":10000,"price":"$0.17949","currency":"USD"},{"qty":25000,"price":"$0.17535","currency":"USD"},{"qty":50000,"price":"$0.17088","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8252d3e19b221c4a608eceafe04dd4b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS3170UF/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional equivalent to STPS3170UF?","answer":"The STPS4S200UF is a 200 V, 4 A Schottky in the same ECOPACK® SMBflat footprint. It offers higher voltage and current headroom but shares the same package and temperature range. For a drop-in fit at 170 V / 3 A, the STPS3170UF is the correct rating; the STPS4S200UF is an upsized alternative if the design needs margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS3170UF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS3170UF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}