{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HCPL2531SM","brand":"onsemi","brandSlug":"onsemi","productSlug":"HCPL2531SM","canonicalUrl":"https://icboms.com/onsemi/HCPL2531SM","factsUrl":"https://icboms.com/api/mcp/products/HCPL2531SM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi HCPL2531SM dual-channel optocoupler, DC input, transistor output, 5000Vrms isolation, 19%-50% CTR, 8-SMD gull wing package, surface mount.","salesMarkdown":"## Dual-channel isolation with 5000Vrms barrier The onsemi HCPL2531SM is a dual-channel optocoupler in an 8-SMD gull-wing package, designed for galvanic isolation in logic-level and low-power signal paths. The 5000Vrms isolation rating covers reinforced insulation requirements per IEC 60950-1 for safety barriers between primary and secondary circuits. Each channel uses a DC-driven LED (1.45V typical forward voltage) coupled to a phototransistor output rated for 20V maximum and 8mA per channel. The current transfer ratio spans 19% to 50% at 16mA forward current, giving the designer a known gain window for logic-level translation across the isolation barrier. ## Switching speed and temperature range for industrial control Turn-on and turn-off times are 250ns and 260ns typical respectively, which suits PLC digital input modules, fieldbus interface isolation, and motor-drive feedback paths where propagation delay must stay below a microsecond. The 25mA absolute maximum forward current per channel sets the LED drive limit; staying below 16mA for nominal operation keeps the CTR within the specified 19%-50% band and avoids accelerated LED degradation over the product lifetime.","metaTitle":"onsemi HCPL2531SM Optoisolator, 2-Ch DC Input, 5000Vrms","metaDescription":"onsemi HCPL2531SM dual-channel optocoupler, 5000Vrms isolation, 19%-50% CTR at 16mA, 250ns switching. Active production, surface-mount 8-SMD gull wing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Bulk","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"8-SMD, Gull Wing","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"2","Base Product Number":"HCPL2531","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":"$1.1800","priceTiers":[{"qty":254,"price":"$1.18000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a11e6da3da17d1eee2b2215b815ab1b5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HCPL2531SM/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/HCPL2531SM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/HCPL2531SM 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}}