{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS140U","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS140U","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS140U","factsUrl":"https://icboms.com/api/mcp/products/STPS140U","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS140U Schottky diode, 40 V reverse, 1 A average rectified, 550 mV forward drop at 1 A, fast recovery <500 ns, DO-214AA SMB package, surface mount, ROHS3 compliant.","salesMarkdown":"The STPS140U: ROHS3 compliant, so no lead-free transition risk for ongoing builds. ## 40 V reverse, 1 A forward — the rail it fits Rated for 40 V DC reverse (max) and 1 A average rectified current. This is the sweet spot for low-voltage secondary-side rectification in 12 V or 24 V DC-DC converters, OR-ing diodes on power-rail inputs, and freewheeling clamp diodes in low-power inductive loads. Forward voltage is 550 mV max at 1 A — typical Schottky conduction loss for this current class, meaning the junction stays within the 150 °C max rating in a well-ventilated SMB pad layout. ## Fast recovery <500 ns — why it matters for switching That recovery speed keeps switching losses low in flyback or forward converters running at moderate frequencies — think 50–100 kHz SMPS stages where a standard pn-junction rectifier would ring or overheat. ## DO-214AA SMB — footprint and sourcing check Supplied in the DO-214AA (SMB) surface-mount package. The SMB footprint is a standard across many Schottky and ultrafast diodes — if your BOM already uses an SMB diode, this part drops in without a layout change.","metaTitle":"STPS140U Schottky Diode, 40V 1A, SMB, Active","metaDescription":"STPS140U Schottky rectifier: 40V reverse, 1A forward, 550mV Vf at 1A, fast recovery <500ns, DO-214AA SMB package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS140","Capacitance @ Vr, F":"-","Supplier Device Package":"SMB","Current - Reverse Leakage @ Vr":"12 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"550 mV @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4500","priceTiers":[{"qty":1,"price":"$0.45000","currency":"USD"},{"qty":10,"price":"$0.34600","currency":"USD"},{"qty":100,"price":"$0.20780","currency":"USD"},{"qty":500,"price":"$0.19240","currency":"USD"},{"qty":1000,"price":"$0.13084","currency":"USD"},{"qty":2500,"price":"$0.12044","currency":"USD"},{"qty":5000,"price":"$0.11544","currency":"USD"},{"qty":12500,"price":"$0.10390","currency":"USD"},{"qty":25000,"price":"$0.10236","currency":"USD"},{"qty":62500,"price":"$0.09620","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/57d9a0f4a073368765236fda0c0792cb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS140U/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS140U","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS140U 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}}