{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS140Z","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS140Z","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS140Z","factsUrl":"https://icboms.com/api/mcp/products/STPS140Z","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS140Z Schottky rectifier, 1 A average rectified current, 40 V reverse voltage, 550 mV forward drop at 1 A, SOD-123 surface-mount package.","salesMarkdown":"The STPS140Z is a 1 A, 40 V Schottky rectifier from STMicroelectronics in a SOD-123 surface-mount package. Schottky construction gives it a fast recovery time (under 500 ns at >200 mA) and a low forward voltage of 550 mV at the full 1 A rated current. That low Vf keeps conduction losses down in low-voltage rails and OR-ing applications. The 40 V reverse rating gives headroom for 24 V and 12 V buses, and the 150°C maximum junction temperature suits industrial and automotive ambient conditions. ## Forward drop and thermal margin At 1 A forward current the 550 mV drop is about half what a standard pn-junction rectifier would show at the same current. That directly reduces self-heating in the SOD-123 body, which has limited thermal mass. If you are pushing 1 A continuous in a warm enclosure, check the junction temperature against the 150°C limit—derating for ambient and PCB copper area is worth the calculation. The 40 µA reverse leakage at 40 V is typical for a Schottky of this voltage class and should be factored into standby power budgets. ## SOD-123 footprint and assembly SOD-123 is a standard small-signal diode footprint, compatible with common pick-and-place and reflow profiles. No special bake or handling beyond standard MSL precautions applies. The base product number is STPS140, so cross-references within that family share the same die and package options.","metaTitle":"STPS140Z Schottky Diode, 1 A, 40 V, SOD-123","metaDescription":"STPS140Z Schottky rectifier: 1 A average, 40 V reverse, 550 mV forward drop at 1 A. SOD-123 surface-mount. Active lifecycle.","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":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"SOD-123","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS140","Capacitance @ Vr, F":"-","Supplier Device Package":"SOD-123","Current - Reverse Leakage @ Vr":"40 µA @ 400 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":"$0.5100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bee72d572ce7ae37a0fdb4dafc6815f2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS140Z/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STPS140Z?","answer":"Within the STPS140 base product family, parts share the same die and SOD-123 package, so any STPS140 variant with matching voltage and current ratings is a direct alternative. Outside the family, other manufacturers offer 1 A, 40 V Schottky diodes in SOD-123, but verify forward voltage and reverse leakage against your circuit's limits."},{"question":"Does STPS140Z meet RoHS compliance?","answer":"STMicroelectronics lists the STPS140Z as RoHS compliant. The part is lead-free and suitable for RoHS-regulated assemblies."},{"question":"What is STPS140Z's listed speed?","answer":"The STPS140Z is a Schottky rectifier with fast recovery under 500 ns at forward currents above 200 mA. This makes it suitable for high-frequency rectification and freewheeling applications where switching losses matter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS140Z","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS140Z 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}}