{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI8645BB-B-IS1","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI8645BB-B-IS1","canonicalUrl":"https://icboms.com/skyworks/SI8645BB-B-IS1","factsUrl":"https://icboms.com/api/mcp/products/SI8645BB-B-IS1","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions Si864x series digital isolator, SI8645BB-B-IS1, 4-channel unidirectional, 2500Vrms isolation, 150Mbps data rate, capacitive coupling, 16-SOIC package, tube.","salesMarkdown":"The SI8645BB-B-IS1: It supports a data rate of 150Mbps with a typical propagation delay of 13 ns max in both directions, and pulse width distortion is held to 4.5 ns max — tight enough for high-speed SPI or UART links where skew between channels matters. The input-side configuration is 4/0 — all four channels face Side 1, so this variant is suited for isolating a bank of downstream signals from a single microcontroller domain. ## Environmental ruggedness and transient immunity Operating temperature spans -40°C to 125°C, covering industrial and some automotive under-hood environments — the 125°C ceiling means the part can sit near a hot power stage or in an engine bay without derating the isolation barrier. Common-mode transient immunity is rated at 35 kV/µs minimum, which is the key spec for motor-drive or inverter applications where fast-switching IGBTs couple large dV/dt onto the isolation barrier; a 35 kV/µs rating ensures the output does not glitch during a hard commutation event. Rise and fall times are 2.5 ns typical, which combined with the 13 ns propagation delay keeps the total channel latency under 18 ns — important for closed-loop control loops where every nanosecond of delay adds phase lag. ## Package, mounting, and compliance The part is supplied in tube packaging. Lifecycle status is Active, and the part is ROHS3 compliant. No isolated power is provided on-chip — the device requires separate supply rails on each side.","metaTitle":"Skyworks SI8645BB-B-IS1 Digital Isolator, 2500Vrms, 150Mbps","metaDescription":"Skyworks SI8645BB-B-IS1 digital isolator, 4-channel, 2500Vrms isolation, 150Mbps data rate, 16-SOIC. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":"Si864x","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Series":"Si864x","Package":"Tube","Data Rate":"150Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.5V ~ 5.5V","Number of Channels":"4","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"4/0","Rise / Fall Time (Typ)":"2.5ns, 2.5ns","Supplier Device Package":"16-SOIC","Pulse Width Distortion (Max)":"4.5ns","Propagation Delay tpLH / tpHL (Max)":"13ns, 13ns","Common Mode Transient Immunity (Min)":"35kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.88","stockQuantity":14,"priceTiers":[{"qty":1,"price":"$3.88000","currency":"USD"},{"qty":10,"price":"$3.48600","currency":"USD"},{"qty":25,"price":"$3.29520","currency":"USD"},{"qty":100,"price":"$2.85580","currency":"USD"},{"qty":250,"price":"$2.70932","currency":"USD"},{"qty":500,"price":"$2.43108","currency":"USD"},{"qty":1000,"price":"$2.05030","currency":"USD"},{"qty":2500,"price":"$1.94778","currency":"USD"},{"qty":5000,"price":"$1.87456","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/be2be0cd247effc5bbc93f4ca5c7a629.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will SI8645BB-B-IS1 drop into a board designed for SI8645BC-B-IS1?","answer":"The SI8645BC-B-IS1 is the same pinout and package (16-SOIC) with a higher isolation rating of 3750Vrms. The SI8645BB-B-IS1 at 2500Vrms is a drop-in replacement for boards where the lower isolation is sufficient — no board spin is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI8645BB-B-IS1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/skyworks/SI8645BB-B-IS1 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}}