{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HCPL0731","brand":"onsemi","brandSlug":"onsemi","productSlug":"HCPL0731","canonicalUrl":"https://icboms.com/onsemi/HCPL0731","factsUrl":"https://icboms.com/api/mcp/products/HCPL0731","rawCanonicalId":null},"summary":{"shortDescription":"onsemi HCPL0731, dual Darlington optocoupler, 2-channel, 2500Vrms isolation, 8-SOIC surface-mount package, 400%–5000% CTR at 500µA forward current.","salesMarkdown":"## What the high CTR range buys your isolated I/O design The HCPL0731 is a dual-channel Darlington-output optocoupler from onsemi, in an 8-SOIC package. Its current transfer ratio spans 400% minimum to 5000% maximum at 500 µA forward current — that wide gain window means you can pull the LED side with a standard logic-level output and still get a clean logic-level signal on the output side, even over temperature. ## Key parametrics for your BOM review Isolation rating is 2500 Vrms, sufficient for basic functional isolation in industrial control and PLC digital input modules. Turn-on time is 300 ns typical, turn-off 1.6 µs typical; the asymmetry matters if you are counting edges at a few hundred kHz. Forward voltage is 1.35 V typical, with a maximum DC forward current of 20 mA — the input LED is well within the drive capability of a 3.3 V or 5 V microcontroller pin through a series resistor. ## Lifecycle and compliance at a glance The package is 8-SOIC, supplied in Tube.","metaTitle":"HCPL0731 onsemi Optoisolator – 2-Ch Darlington, 2500Vrms","metaDescription":"onsemi HCPL0731 dual Darlington optocoupler. 400%-5000% CTR at 500µA, 2500Vrms isolation, 8-SOIC. Active, ROHS3. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Darlington","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"2","Base Product Number":"HCPL07","Voltage - Isolation":"2500Vrms","Vce Saturation (Max)":"-","Operating Temperature":"-40°C~85°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"18V","Supplier Device Package":"8-SOIC","Current - Output / Channel":"60mA","Current Transfer Ratio (Max)":"5000% @ 500µA","Current Transfer Ratio (Min)":"400% @ 500µA","Voltage - Forward (Vf) (Typ)":"1.35V","Turn On / Turn Off Time (Typ)":"300ns, 1.6µs","Current - DC Forward (If) (Max)":"20 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.4100","priceTiers":[{"qty":1,"price":"$3.41000","currency":"USD"},{"qty":10,"price":"$2.27700","currency":"USD"},{"qty":100,"price":"$1.75190","currency":"USD"},{"qty":500,"price":"$1.58368","currency":"USD"},{"qty":1000,"price":"$1.36098","currency":"USD"},{"qty":2000,"price":"$1.28674","currency":"USD"},{"qty":5000,"price":"$1.25705","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/85c2d059a279eb8719c8e3f2c4a0c7b4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HCPL0731/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between HCPL0731 and HCPL0730?","answer":"The HCPL0730 is a single-channel Darlington optocoupler in the same 8-SOIC package. The HCPL0731 is the dual-channel variant. All other key ratings — isolation voltage, CTR range, output voltage, temperature range — are identical between the two. If your BOM calls for two isolated channels, the HCPL0731 saves board space versus two HCPL0730s."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/HCPL0731","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/HCPL0731 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}