{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOL628A","brand":"Vishay","brandSlug":"vishay","productSlug":"VOL628A","canonicalUrl":"https://icboms.com/vishay/VOL628A","factsUrl":"https://icboms.com/api/mcp/products/VOL628A","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOL628A optocoupler, transistor output, 5000Vrms isolation, 50mA output, 4-SMD gull wing package, -55°C to 110°C.","salesMarkdown":"## 5000Vrms isolation and CTR range The VOL628A: That isolation voltage qualifies it for reinforced insulation in mains-connected circuits — think AC line monitoring, motor drive feedback, or industrial PLC digital inputs where the field side and logic side must be galvanically separated. Its current transfer ratio spans 50% to 600% at 1 mA forward current. The wide spread means the input LED drive must be sized for the 50% minimum to guarantee the output transistor saturates across all temperature and aging conditions. At 1 mA forward, the output can sink up to 50 mA continuous per channel. ## Package and reflow fit The gull wing leads provide good coplanarity and self-centering during reflow — no tombstoning risk on a well-profiled oven. Operating temperature range of -55°C to 110°C covers industrial enclosures and under-hood automotive environments. The 400 mV max Vce saturation at rated current keeps the power dissipation low enough that no external heatsink is needed in most logic-level loads. ## Switching speed and drive capability Rise and fall times are 3.5 µs and 5 µs typical, with turn-on and turn-off times of 6 µs and 5.5 µs. This limits the practical switching frequency to about 10 kHz — fine for relay drivers, DC motor PWM, or sensor debouncing, but not for high-speed data or isolated serial links. The output transistor can handle up to 80 V across its collector-emitter, and the LED forward current max is 60 mA. The AC and DC input type means the internal LED is back-to-back or has a bridge — the optocoupler conducts regardless of input polarity. This simplifies board layout when the input signal polarity is unknown or can reverse, such as in AC mains detection circuits.","metaTitle":"Vishay VOL628A Optocoupler, 5000Vrms, 4-SMD, Active","metaDescription":"Vishay VOL628A optocoupler, 5000Vrms isolation, 50-600% CTR at 1mA, 50mA output, 4-SMD gull wing. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$0.69","priceTiers":[{"qty":1,"price":"$0.69000","currency":"USD"},{"qty":10,"price":"$0.44800","currency":"USD"},{"qty":100,"price":"$0.29360","currency":"USD"},{"qty":1000,"price":"$0.23175","currency":"USD"},{"qty":3000,"price":"$0.21630","currency":"USD"},{"qty":6000,"price":"$0.20858","currency":"USD"},{"qty":15000,"price":"$0.20549","currency":"USD"},{"qty":30000,"price":"$0.20085","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c4240fb8a43a782e76f655f3b9438b78.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VOL628A/alternatives.json"},"ai":{"faq":[{"question":"What package does the VOL628A use?","answer":"It comes in a 4-SMD gull wing package (4-SOP supplier device package), a standard surface-mount footprint suitable for reflow soldering with good coplanarity."},{"question":"Can the VOL628A handle AC input signals?","answer":"Yes, the input type is listed as AC and DC, meaning the internal LED conducts regardless of polarity. This makes it suitable for AC mains detection circuits without needing an external bridge rectifier."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOL628A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOL628A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}