{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS3H100UFY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS3H100UFY","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS3H100UFY","factsUrl":"https://icboms.com/api/mcp/products/STPS3H100UFY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS3H100UFY, Automotive Schottky diode, 100 V reverse voltage, 3 A average rectified current, Fast Recovery ≤ 500 ns, 175 °C junction temperature, AEC-Q101 qualified, DO-221AA SMBflat surface-mount package.","salesMarkdown":"## 100 V Schottky for 48 V and 12 V automotive rails The STPS3H100UFY is an STMicroelectronics automotive Schottky rectifier rated at 100 V reverse voltage and 3 A average forward current, in the low-profile SMBflat (DO-221AA) surface-mount package. The 100 V VR rating provides the derating margin needed for 48 V mild-hybrid bus rails and for reverse-battery protection on 12 V systems where load-dump transients can exceed 40 V. AEC-Q101 qualification means this part meets the automotive stress tests for production-vehicle use — thermal cycling, HTRB, and humidity bias are already characterised. ## 3 A in SMBflat — thermal budget matters At 3 A average rectified current the SMBflat package relies on the PCB copper area for heat spreading; the junction-to-ambient thermal resistance is set by the layout, not the device alone. Forward voltage is specified at 940 mV maximum at 6 A — this is a pulsed condition; the continuous conduction loss at 3 A will be lower, but the 940 mV ceiling bounds the worst-case efficiency for the alternator or DC-DC output OR-ing diode. For a production automotive BOM this means the part is still factory-supported and can be quoted for multi-year programmes without the obsolescence contingency that NRND or EOL parts carry.","metaTitle":"STPS3H100UFY Schottky Diode, 100 V, 3 A, AEC-Q101, SMBflat","metaDescription":"STPS3H100UFY automotive Schottky diode, 100 V VR, 3 A Io, 175 °C Tj, AEC-Q101 qualified in SMBflat surface-mount package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-221AA, SMB Flat Leads","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS3","Capacitance @ Vr, F":"-","Supplier Device Package":"SMBflat","Current - Reverse Leakage @ Vr":"1 µA @ 100 V","Voltage - DC Reverse (Vr) (Max)":"100 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"-40°C~175°C","Voltage - Forward (Vf) (Max) @ If":"940 mV @ 6 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b38cd01ddff8bcedb87a4d9138f1c6c4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS3H100UFY/alternatives.json"},"ai":{"faq":[{"question":"Is the STPS3H100UFY AEC-Q101 qualified?","answer":"Yes, the STPS3H100UFY is listed under the Automotive series and carries AEC-Q101 qualification, making it suitable for production automotive applications."},{"question":"Can the STPS3H100UFY replace the STPS3H100U?","answer":"The STPS3H100UFY uses the SMBflat (DO-221AA) package, which is a lower-profile surface-mount variant compared to the standard SMB (DO-214AA) of the STPS3H100U. The electrical ratings — 100 V VR, 3 A Io, 175 °C Tj — are the same, but the footprint and solder-paste stencil aperture differ. Verify the PCB land pattern before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS3H100UFY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS3H100UFY 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}}