{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HCPL3700SV","brand":"onsemi","brandSlug":"onsemi","productSlug":"HCPL3700SV","canonicalUrl":"https://icboms.com/onsemi/HCPL3700SV","factsUrl":"https://icboms.com/api/mcp/products/HCPL3700SV","rawCanonicalId":null},"summary":{"shortDescription":"onsemi HCPL3700SV AC/DC-to-logic interface optocoupler, 1-channel, 2500Vrms isolation, Darlington output, 8-SMD gull wing, tube.","salesMarkdown":"## AC/DC-to-logic interface optocoupler — 2500 Vrms isolation The onsemi HCPL3700SV is a single-channel optocoupler that accepts both AC and DC input signals and outputs a logic-level signal via a Darlington transistor pair. The 2500 Vrms isolation rating means this part provides galvanic isolation between a high-voltage AC or DC field side and a low-voltage logic controller, protecting the control board from transients and ground loops. Rated for continuous operation from -40°C to 85°C, it suits industrial environments where the optocoupler sits on a PCB inside a panel exposed to temperature swings. The 8-SMD gull-wing package with a surface-mount footprint keeps the assembly compatible with reflow soldering. ## Switching response and output drive Typical turn-on time is 6 µs and turn-off is 25 µs, with rise and fall times of 45 µs and 0.5 µs respectively. The 20 V maximum output rating gives headroom for 12 V or 15 V logic rails. The AC/DC input stage means the LED side accepts a rectified waveform — no external bridge diode needed for AC sensing applications like zero-cross detection or mains monitoring. onsemi has marked the HCPL3700SV as obsolete. No official successor or pin-compatible replacement is recorded from the original manufacturer. For a BOM that requires this exact order code, the only sourcing path is the open market. No stock-holding claim is made here — each lot is sourced per request.","metaTitle":"HCPL3700SV onsemi Optoisolator, 2500Vrms, AC/DC Input","metaDescription":"HCPL3700SV onsemi optoisolator, 2500Vrms isolation, AC/DC input, Darlington output, 8-SMD gull wing. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"AC, DC","Output Type":"Darlington","Mounting Type":"Surface Mount","Package / Case":"8-SMD, Gull Wing","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"HCPL3700","Voltage - Isolation":"2500Vrms","Vce Saturation (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Rise / Fall Time (Typ)":"45µs, 0.5µs","Voltage - Output (Max)":"20V","Supplier Device Package":"8-SMD","Current - Output / Channel":"30mA","Current Transfer Ratio (Max)":"-","Current Transfer Ratio (Min)":"-","Voltage - Forward (Vf) (Typ)":"-","Turn On / Turn Off Time (Typ)":"6µs, 25µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.7100","priceTiers":[{"qty":123,"price":"$2.45000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HCPL3700SV/alternatives.json"},"ai":{"faq":[{"question":"What is the input type of the HCPL3700SV?","answer":"The input stage accepts both AC and DC signals, allowing direct connection to AC mains or DC control lines without an external rectifier."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/HCPL3700SV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/HCPL3700SV when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:17:51.132Z","lastPublished":"2026-07-21T06:17:51.132Z","indexable":true}}