{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HCPL4503SM","brand":"onsemi","brandSlug":"onsemi","productSlug":"HCPL4503SM","canonicalUrl":"https://icboms.com/onsemi/HCPL4503SM","factsUrl":"https://icboms.com/api/mcp/products/HCPL4503SM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi HCPL4503SM optoisolator, 1-channel DC input, transistor with base output, 5000Vrms isolation, 8-SMD gull wing surface mount, tube.","salesMarkdown":"## 5000Vrms isolation and 250ns switching for high-speed signal isolation The onsemi HCPL4503SM is a single-channel optoisolator with a transistor-with-base output, rated for 5000Vrms isolation — enough for reinforced insulation in mains-connected circuits like PLC digital inputs, motor drive feedback, and medical patient-interface barriers. Typical turn-on and turn-off times of 250 ns and 260 ns respectively make it fast enough to pass 1 MHz logic signals cleanly, suiting it for high-speed data isolation in industrial fieldbus couplers or gate-drive feedback paths. ## CTR range and output drive — design margin for aging Current transfer ratio spans 19% minimum to 50% maximum at a forward current of 16 mA — the wide guard band between min and max lets the designer account for LED degradation over temperature and lifetime without losing logic threshold. Output is rated for 8 mA continuous at 20 V max, which drives standard TTL or 5 V CMOS loads directly; the base terminal allows external pull-up or speed-up networks for custom switching thresholds. ## Surface-mount package and industrial temperature grade Housed in an 8-pin SMD gull-wing package (8-SMD), the HCPL4503SM reflows with standard lead-free profiles and requires no through-hole staking — a drop-in for automated assembly lines. ## Active lifecycle and compliance — no obsolescence risk No stock-holding claim — availability verified per request.","metaTitle":"onsemi HCPL4503SM Optoisolator, 5000Vrms, 8-SMD Gull Wing","metaDescription":"onsemi HCPL4503SM optoisolator: 1-channel, 5000Vrms isolation, 250ns switching, transistor with base output, 8-SMD gull wing. Active, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"8-SMD, Gull Wing","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"HCPL4503","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"-","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"20V","Supplier Device Package":"8-SMD","Current - Output / Channel":"8mA","Current Transfer Ratio (Max)":"50% @ 16mA","Current Transfer Ratio (Min)":"19% @ 16mA","Voltage - Forward (Vf) (Typ)":"1.45V","Turn On / Turn Off Time (Typ)":"250ns, 260ns","Current - DC Forward (If) (Max)":"25 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9800","priceTiers":[{"qty":1,"price":"$2.98000","currency":"USD"},{"qty":10,"price":"$1.98400","currency":"USD"},{"qty":100,"price":"$1.52650","currency":"USD"},{"qty":500,"price":"$1.37990","currency":"USD"},{"qty":1000,"price":"$1.18585","currency":"USD"},{"qty":2000,"price":"$1.12117","currency":"USD"},{"qty":5000,"price":"$1.09530","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/755a87ef05b8a59d6251e4dd0d139dc6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HCPL4503SM/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for HCPL4503SM — FODM1009?","answer":"FODM1009 is a parametric peer with the same 1-channel DC-input transistor output and surface-mount package, but its 5000 Vrms isolation matches HCPL4503SM while offering a higher CTR (50% min vs 19% min) at the cost of slower switching (5.7 µs rise/fall vs 250 ns). For high-speed applications, HCPL4503SM is the faster choice; for slower logic with more LED-drive margin, FODM1009 is a viable cross-shop."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/HCPL4503SM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/HCPL4503SM 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}}