{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOS628A-3X001T","brand":"Vishay","brandSlug":"vishay","productSlug":"VOS628A-3X001T","canonicalUrl":"https://icboms.com/vishay/VOS628A-3X001T","factsUrl":"https://icboms.com/api/mcp/products/VOS628A-3X001T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOS628A-3X001T, series VOS628A, 1-channel phototransistor optocoupler, 3750Vrms isolation, 100-200% CTR at 1mA, -55°C to 110°C, 4-SOIC surface mount.","salesMarkdown":"## 3750Vrms isolation in a 4-SOIC footprint The VOS628A-3X001T is a Vishay 1-channel phototransistor optocoupler rated for 3750Vrms isolation. That isolation voltage suits industrial control, motor drive feedback, and AC mains sensing where galvanic separation between logic and power domains is mandatory. Input accepts both AC and DC, so it handles bipolar signals or rectified AC without an external bridge — useful in zero-cross detection or line-voltage monitoring. ## CTR range and switching speed Current transfer ratio (CTR) is guaranteed 100% minimum, 200% maximum at 1 mA forward current. This tight band means the output transistor drives a known collector current for a given LED current — no guesswork in the load resistor calculation. Turn-on time is 5 µs typical, turn-off 8 µs typical; rise/fall are 5 µs and 7 µs respectively. At 50 mA output per channel, the part handles moderate-speed digital isolation up to about 50 kHz without pulse-width distortion. ## Temperature grade and package reality Operating temperature spans -55°C to 110°C — wide enough for outdoor telecom cabinets, engine-bay electronics, or cold-chain storage. The 4-SOIC package with 4.40 mm width fits standard SOIC-4 land patterns; the supplier device package is 4-SSOP. Lifecycle status is Active. Vishay continues production. Available in Tape & Reel (TR) or Cut Tape (CT). Sourced per RFQ — confirm lead time and pricing against your BOM quantity at quote time.","metaTitle":"VOS628A-3X001T Vishay Optocoupler, 3750Vrms, CTR 100-200%","metaDescription":"Vishay VOS628A-3X001T optocoupler: 1-channel transistor output, 3750Vrms isolation, CTR 100-200% at 1mA, -55°C to 110°C. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":"VOS628A","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"VOS628A","Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"AC, 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-SSOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 1mA","Current Transfer Ratio (Min)":"100% @ 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":"$1.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.04000","currency":"USD"},{"qty":10,"price":"$0.65600","currency":"USD"},{"qty":100,"price":"$0.48580","currency":"USD"},{"qty":500,"price":"$0.44642","currency":"USD"},{"qty":1000,"price":"$0.36764","currency":"USD"},{"qty":3000,"price":"$0.34926","currency":"USD"},{"qty":6000,"price":"$0.34138","currency":"USD"},{"qty":15000,"price":"$0.33350","currency":"USD"},{"qty":30000,"price":"$0.32825","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/37e665e5289dcf161b29b3f46fb7f53a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is VOS628A-3X001T pin-compatible with VOS628A-3X001?","answer":"The suffix -3X001T indicates Tape & Reel packaging versus the bulk or tube variant. Both share the same die, isolation rating (3750Vrms), CTR range, and 4-SOIC footprint. They are electrically identical; the only difference is the shipping format."},{"question":"Can VOS628A-3X001T replace a PC817 optocoupler?","answer":"The PC817 is a 1-channel phototransistor optocoupler in a DIP-4 package with 5000Vrms isolation. The VOS628A-3X001T is a surface-mount 4-SOIC part with 3750Vrms isolation. They are not pin-compatible; a board redesign is required. For a drop-in SMT replacement, confirm the footprint and isolation voltage against your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOS628A-3X001T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOS628A-3X001T 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}}