{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOS618A-8T","brand":"Vishay","brandSlug":"vishay","productSlug":"VOS618A-8T","canonicalUrl":"https://icboms.com/vishay/VOS618A-8T","factsUrl":"https://icboms.com/api/mcp/products/VOS618A-8T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOS618A-8T, transistor output optocoupler, 1-channel, 3750Vrms isolation, 130-260% CTR at 1mA, 80V output, 4-SOIC package, surface mount, -55°C to 110°C.","salesMarkdown":"## 3750Vrms isolation in a compact 4-SOIC The Vishay VOS618A-8T is a single-channel transistor-output optocoupler designed for galvanic isolation in DC-coupled signal paths. It packs 3750Vrms of isolation into a 4-SOIC package measuring 4.40mm wide, making it a space-efficient choice for breaking ground loops or level-shifting logic signals on densely populated boards. The current transfer ratio spans 130% to 260% at a forward current of 1mA, which means the phototransistor can sink between 1.3mA and 2.6mA of collector current with only 1mA through the LED. That range gives you predictable drive margin for TTL or CMOS inputs without overdriving the LED. The 80V output rating and 50mA per-channel current handle most logic-level and low-power load switching. ## Temperature range and switching speed Rated from -55°C to 110°C, this optocoupler suits environments where the board sees temperature extremes — think outdoor telecom, industrial motor drives, or engine-bay-adjacent electronics. ## Package and mounting Supplied in a 4-SOIC (0.173\", 4.40mm width) surface-mount package, the VOS618A-8T fits standard pick-and-place assembly.","metaTitle":"VOS618A-8T Optoisolator, 3750Vrms, 130-260% CTR, 4-SOIC","metaDescription":"VOS618A-8T transistor output optocoupler with 3750Vrms isolation, 130-260% CTR at 1mA, -55°C to 110°C range. Active, RoHS3 compliant.","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":"4-SOIC (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"5µs, 7µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"260% @ 1mA","Current Transfer Ratio (Min)":"130% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"5µs, 8µs","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.38400","currency":"USD"},{"qty":100,"price":"$0.22070","currency":"USD"},{"qty":1000,"price":"$0.17271","currency":"USD"},{"qty":3000,"price":"$0.15832","currency":"USD"},{"qty":6000,"price":"$0.14393","currency":"USD"},{"qty":15000,"price":"$0.13433","currency":"USD"},{"qty":30000,"price":"$0.12953","currency":"USD"},{"qty":75000,"price":"$0.12473","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9e18ade64f7506aeda7401d719d8a650.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of VOS618A-8T?","answer":"The CTR is specified as a minimum of 130% and a maximum of 260% at a forward current of 1mA."},{"question":"Is VOS618A-8T RoHS compliant?","answer":"Yes, the VOS618A-8T is ROHS3 compliant."},{"question":"What is the closest pin-compatible alternative to VOS618A-8T?","answer":"A common cross-shop candidate is the TLP185 from Toshiba, which is also a single-channel transistor output optocoupler in a 4-SOIC package with similar isolation and CTR ranges. Verify pin compatibility and CTR bin against your specific drive requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOS618A-8T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOS618A-8T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}