{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCT2ESR2VM","brand":"onsemi","brandSlug":"onsemi","productSlug":"MCT2ESR2VM","canonicalUrl":"https://icboms.com/onsemi/MCT2ESR2VM","factsUrl":"https://icboms.com/api/mcp/products/MCT2ESR2VM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MCT2ESR2VM single-channel optocoupler, 7500Vpk isolation, DC input, transistor with base output, 6-SMD Gull Wing, Bulk.","salesMarkdown":"## 7500Vpk isolation barrier — where it fits The MCT2ESR2VM from onsemi is a single-channel optocoupler with a transistor-with-base output, rated for 7500Vpk isolation between input and output. That peak isolation voltage qualifies it for reinforced isolation in mains-referenced circuits — think industrial AC line monitoring, motor-drive feedback, or power-supply error amplifiers where the safety barrier must hold off transient surges without breakdown. ## CTR and switching speed — the real design constraints That floor sets the LED drive budget: with 10 mA in, the output transistor can sink at least 2 mA, which is enough to pull a logic input low or drive a low-current relay coil. The 50 mA continuous output current and 30 V output voltage ceiling mean it drives loads, not just signal lines. Rise and fall times are 2 µs and 1.5 µs typical, with turn-on and turn-off both at 2 µs typical. That gives a practical switching ceiling around 100 kHz — fine for 50/60 Hz line sync, zero-cross detection, or slow digital isolation, but not for high-speed data buses like I²C or SPI without careful derating. ## Base access — what the third terminal buys you Unlike a simple phototransistor optocoupler, the MCT2ESR2VM brings out the base of the output transistor as a separate pin. That lets you bias the base for faster switching, configure it as a photodarlington by connecting an external transistor, or add a base-emitter resistor to improve noise immunity. In practice, it gives the circuit designer flexibility the 4N25 family is known for, but in a surface-mount Gull Wing package.","metaTitle":"onsemi MCT2ESR2VM Optoisolator, 7500Vpk","metaDescription":"onsemi MCT2ESR2VM single-channel optocoupler, 7500Vpk isolation, transistor with base output, 20% CTR min, 6-SMD Gull Wing. Active lifecycle, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Bulk","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"7500Vpk","Vce Saturation (Max)":"400mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"2µs, 1.5µs","Voltage - Output (Max)":"30V","Supplier Device Package":"6-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Min)":"20% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.25V","Turn On / Turn Off Time (Typ)":"2µs, 2µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.88","stockQuantity":22,"priceTiers":[{"qty":1229,"price":"$0.27000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dc1dc2c6b74d0c9f0a5609f9ab73d517.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to MCT2ESR2VM?","answer":"The 4N25SR2M is the closest peer — same single-channel transistor-with-base output, same 2 µs switching speed, and same surface-mount Gull Wing package. The main difference is isolation voltage: 4N25SR2M is rated 4170 Vrms, while MCT2ESR2VM is rated 7500 Vpk. If your application needs the higher isolation peak rating, stick with the MCT2ESR2VM; for lower isolation requirements, the 4N25SR2M is a drop-in alternative on the same footprint."},{"question":"What package does MCT2ESR2VM come in?","answer":"It is supplied in Bulk packaging (tube or tray) in a 6-SMD Gull Wing package (6-SMD as the supplier device package). This is the surface-mount version of the classic 6-pin DIP optocoupler footprint, compatible with many standard 6-pin optocoupler layouts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MCT2ESR2VM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MCT2ESR2VM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}