{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS3L25S","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS3L25S","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS3L25S","factsUrl":"https://icboms.com/api/mcp/products/STPS3L25S","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS3L25S Schottky rectifier, 3 A average rectified current, 25 V reverse voltage, 490 mV forward drop at 3 A, DO-214AB SMC package, surface mount.","salesMarkdown":"## 3 A Schottky for low-voltage rails — what the ratings mean The STMicroelectronics STPS3L25S is a 3 A, 25 V Schottky rectifier in a DO-214AB SMC package. Its 490 mV forward drop at the full 3 A rating keeps conduction losses low, which matters when you are rectifying a 5 V or 12 V rail and every 100 mV of drop eats into efficiency. The 25 V reverse voltage limits it to low-voltage DC applications — think secondary-side rectification in a flyback converter, OR-ing diodes in a redundant supply, or reverse-polarity protection on a 12 V bus. The SMC footprint is larger than a SOD-123, so it sheds heat better through the PCB copper, but you still want a decent pad area under the part. If you have a BOM line that calls out this exact order code, you are looking at last-time-buy inventory already in distribution channels. For a production run, budget time for a substitution review. ## Hand-soldering the SMC package The DO-214AB SMC is a surface-mount package with large end-cap terminations. Just pre-tin one pad, position the diode, reflow that joint, then solder the other side. The SMC body is about 7 mm long, so it takes up more board space than a SOD-123FL, but the extra copper area helps with thermal spreading. No special baking needed unless the reel has been open past the MSL floor life.","metaTitle":"STPS3L25S Schottky Rectifier, 3A 25V DO-214AB SMC, Obsolete","metaDescription":"STPS3L25S Schottky diode, 3 A average rectified current, 25 V reverse voltage, 490 mV forward drop at 3 A. DO-214AB SMC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Technology":"Schottky","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS3L","Capacitance @ Vr, F":"-","Supplier Device Package":"SMC","Current - Reverse Leakage @ Vr":"90 µA @ 25 V","Voltage - DC Reverse (Vr) (Max)":"25 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"490 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/40376c1e59537cdaa39b8b27fdd3b873.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS3L25S/alternatives.json"},"ai":{"faq":[{"question":"Is STPS3L25S obsolete?","answer":"Yes, the STPS3L25S is listed as obsolete. STMicroelectronics has discontinued production, so new stock is only available through independent surplus distribution. Plan for a replacement qualification if you need ongoing supply."},{"question":"What is the replacement for STPS3L25S?","answer":"No official replacement is listed on the record. You will need to cross-reference a Schottky diode with the same ratings: 3 A average rectified current, 25 V reverse voltage, and a DO-214AB SMC package. Look at other ST Schottky series or vendors like ON Semiconductor or Diodes Inc for a pin-compatible alternative."},{"question":"Can I use STPS3L25S in a 5V circuit?","answer":"Yes, the 25 V reverse voltage rating comfortably covers a 5 V rail with plenty of headroom. The 490 mV forward drop at 3 A means you lose under half a volt, which is acceptable for most 5 V designs. Just watch the junction temperature — the maximum is 150°C, so size the PCB copper accordingly if you are pushing the full 3 A."},{"question":"What package is STPS3L25S?","answer":"It comes in a DO-214AB SMC surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS3L25S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS3L25S 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}}