{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOL628AT","brand":"Vishay","brandSlug":"vishay","productSlug":"VOL628AT","canonicalUrl":"https://icboms.com/vishay/VOL628AT","factsUrl":"https://icboms.com/api/mcp/products/VOL628AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOL628AT, optoisolator/optocoupler, 1-channel, AC/DC input, transistor output, 5000Vrms isolation, 4-SMD gull wing package, surface mount, bulk.","salesMarkdown":"## What this optocoupler does and who needs it The VOL628AT is a Vishay optocoupler with a phototransistor output and an input stage that accepts both AC and DC signals. That AC input capability is the differentiator here — it lets you sense line voltage polarity or zero-cross directly without an external bridge rectifier, which saves board space and BOM cost. Isolation is rated at 5000Vrms, making it suitable for safety-barrier applications in industrial power supplies, motor drives, and PLC digital inputs where reinforced insulation is required. Current transfer ratio is specified from 50% minimum to 600% maximum at a forward current of 1 mA. That wide spread means the same part can vary the output collector current by over a decade — design the input resistor for the minimum CTR to guarantee the output saturates, then verify the maximum does not exceed the 50 mA output current rating at your worst-case supply. Typical turn-on time is 6 µs and turn-off is 5.5 µs, with rise/fall of 3.5 µs and 5 µs respectively. That is fast enough for 10–50 kHz switching or data transmission, but not for high-speed isolated communication — keep it below 100 kHz for reliable edge detection. ## Package, mounting, and sourcing posture Surface-mount assembly with gull-wing leads is straightforward for standard reflow profiles.","metaTitle":"VOL628AT Vishay Optoisolator – 5000Vrms, AC/DC Input","metaDescription":"VOL628AT Vishay optocoupler: 5000Vrms isolation, AC/DC input, transistor output, 50-600% CTR at 1mA, -55°C to 110°C, 4-SMD gull wing. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Bulk","Input Type":"AC, DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"3.5µs, 5µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"600% @ 1mA","Current Transfer Ratio (Min)":"50% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.16V","Turn On / Turn Off Time (Typ)":"6µs, 5.5µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.70000","currency":"USD"},{"qty":10,"price":"$0.46000","currency":"USD"},{"qty":100,"price":"$0.30400","currency":"USD"},{"qty":1000,"price":"$0.23472","currency":"USD"},{"qty":2000,"price":"$0.21210","currency":"USD"},{"qty":5000,"price":"$0.19796","currency":"USD"},{"qty":10000,"price":"$0.19089","currency":"USD"},{"qty":25000,"price":"$0.18806","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c4240fb8a43a782e76f655f3b9438b78.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of the VOL628AT?","answer":"Design for the minimum to guarantee output saturation."},{"question":"Is the VOL628AT obsolete?","answer":"No — the lifecycle status is Active. There is no published end-of-life notice or successor."},{"question":"Can the VOL628AT be used with AC input?","answer":"This allows direct line-voltage sensing without an external bridge rectifier."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOL628AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOL628AT 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}}