{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCT61SD","brand":"onsemi","brandSlug":"onsemi","productSlug":"MCT61SD","canonicalUrl":"https://icboms.com/onsemi/MCT61SD","factsUrl":"https://icboms.com/api/mcp/products/MCT61SD","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MCT61SD, dual-channel transistor-output optocoupler, 5000Vrms isolation, 8-SMD Gull Wing package, 50% min CTR at 5 mA, -55°C to 100°C operating range.","salesMarkdown":"## 5000Vrms isolation – safety margin for industrial barriers The MCT61SD: Rated for 5000Vrms isolation – this exceeds the 3750Vrms common on single-channel peers like the FODM217BR2V. The extra margin matters when designing for reinforced insulation in motor drives, PLC I/O modules, or medical equipment where the safety standard demands a higher isolation voltage than the minimum. Two independent transistor-output channels in a single 8-SMD Gull Wing package let you isolate two signals without doubling the PCB footprint. Each channel sinks up to 30 mA and switches with a typical 2.4 µs turn-on and turn-off time – fast enough for 115 kbps digital isolation or low-speed analog feedback loops. ## Wide temperature range – outdoor and cold-start capable Operating from -55°C to 100°C – the -55°C low end is uncommon for optocouplers and signals suitability for outdoor telecom cabinets, solar inverters, or equipment that must start reliably in freezing conditions. The 100°C ceiling covers most industrial enclosures without forced cooling. Minimum current transfer ratio of 50% at 5 mA forward current ensures the output transistor saturates reliably when the LED is driven at a standard 5 mA. The 400 mV max Vce(sat) keeps the logic-low voltage well within TTL/CMOS thresholds for a direct interface to a microcontroller input. ## Sourcing and package options Available in Tape & Reel (TR) or Cut Tape (CT) for the 8-SMD Gull Wing package. The surface-mount footprint mates with standard reflow profiles – no special handling beyond standard moisture sensitivity level (MSL) bake requirements per J-STD-020. onsemi is the sole manufacturer. The closest single-channel alternative is the FODM217BR2V, but that part offers only 3750Vrms isolation and one channel – a meaningful downgrade if your design requires dual isolation or the higher 5 kV rating.","metaTitle":"MCT61SD onsemi Dual-Channel Optoisolator – 5kV Isolation","metaDescription":"onsemi MCT61SD dual-channel transistor output optocoupler, 5000Vrms isolation, -55°C to 100°C, 8-SMD Gull Wing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"8-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"2","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 100°C","Voltage - Output (Max)":"30V","Supplier Device Package":"8-SMD","Current - Output / Channel":"30mA","Current Transfer Ratio (Min)":"50% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.2V","Turn On / Turn Off Time (Typ)":"2.4µs, 2.4µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.70100","currency":"USD"},{"qty":100,"price":"$0.45920","currency":"USD"},{"qty":1000,"price":"$0.36254","currency":"USD"},{"qty":2000,"price":"$0.33837","currency":"USD"},{"qty":5000,"price":"$0.32629","currency":"USD"},{"qty":10000,"price":"$0.32145","currency":"USD"},{"qty":25000,"price":"$0.31420","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/aa7dd78dc84af1323770a3f8bb269e80.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the input type and output type of the MCT61SD?","answer":"The input is DC – a standard infrared LED. The output is a phototransistor with a maximum collector-emitter voltage of 30 V and continuous output current of 30 mA per channel. This makes it suitable for DC-level signal isolation, not AC line sensing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MCT61SD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MCT61SD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:09:03.318Z","lastPublished":"2026-07-17T20:09:03.318Z","indexable":true}}