{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI8651BB-B-IU","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI8651BB-B-IU","canonicalUrl":"https://icboms.com/skyworks/SI8651BB-B-IU","factsUrl":"https://icboms.com/api/mcp/products/SI8651BB-B-IU","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions SI8651BB-B-IU general-purpose digital isolator, capacitive coupling, 5-channel unidirectional, 150 Mbps, 2500 Vrms, 16-SSOP/QSOP, tube.","salesMarkdown":"## Device identity and channel assignment The Skyworks SI8651BB-B-IU is a 5-channel general-purpose digital isolator using capacitive coupling to pass signals across a 2500 Vrms isolation barrier. The channel direction is fixed at 4 inputs on side 1 and 1 input on side 2 — unidirectional, so the data flow is hard-wired at the BOM level, not configurable. Rated for 150 Mbps, the part delivers a 13 ns max propagation delay in either direction, with 4 ns typical rise/fall times and a 4.5 ns max pulse-width distortion. That timing budget keeps the data eye open across the isolation gap for SPI, UART, and general-purpose logic links running at 50-100 MHz clock rates. ## Isolation and transient immunity — what the ratings mean The 2500 Vrms isolation rating is the basic insulation level per UL 1577 — it certifies the part for functional isolation in equipment where the working voltage stays under 300 Vrms. For reinforced isolation applications (motor drives, grid-tied inverters, medical equipment), a 5000 Vrms-rated sibling would be the correct choice. Common-mode transient immunity is specified at 50 kV/µs minimum. In a motor-drive or inverter environment where the IGBT switching edge couples a fast common-mode step across the barrier, a 50 kV/µs CMTI means the output does not glitch or lose data — the isolator rejects the transient rather than propagating it as a bit error. ## Supply rails and temperature grade The -40°C to 125°C operating temperature covers the industrial envelope — outdoor telecom cabinets, factory-floor PLC racks, and engine-bay electronics that see 105°C ambient still have margin. Supplied in a 16-lead SSOP (3.90 mm body width) and also listed with the 16-QSOP supplier device package — these are the same footprint, same 0.635 mm pitch, same 4.4 mm body length.","metaTitle":"Skyworks SI8651BB-B-IU Digital Isolator, 150Mbps, 5Ch","metaDescription":"Skyworks SI8651BB-B-IU general-purpose digital isolator, 5 channels, 150 Mbps, 2500 Vrms, capacitive coupling, -40 to 125°C, 16-QSOP. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Package":"Tube","Data Rate":"150Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.5V ~ 5.5V","Number of Channels":"5","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"4/1","Rise / Fall Time (Typ)":"4ns, 4ns","Supplier Device Package":"16-QSOP","Pulse Width Distortion (Max)":"4.5ns","Propagation Delay tpLH / tpHL (Max)":"13ns, 13ns","Common Mode Transient Immunity (Min)":"50kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.6","stockQuantity":21,"priceTiers":[{"qty":1,"price":"$4.60000","currency":"USD"},{"qty":10,"price":"$4.13500","currency":"USD"},{"qty":96,"price":"$3.38750","currency":"USD"},{"qty":288,"price":"$3.21382","currency":"USD"},{"qty":576,"price":"$2.88375","currency":"USD"},{"qty":1056,"price":"$2.43208","currency":"USD"},{"qty":2592,"price":"$2.31047","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e8d2462427f5d0d56fe8a9bacb8ee344.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will SI8651BB-B-IU drop into a board laid out for SI8650BB-B-IU without a layout change?","answer":"Yes — both parts share the same 16-SSOP/QSOP footprint, same 0.635 mm pitch, same 150 Mbps data rate, same 2500 Vrms isolation, and same supply range. The only difference is the channel-direction split: SI8651BB-B-IU has 4 inputs on side 1 and 1 on side 2, while SI8650BB-B-IU has all 5 inputs on side 1. If the board routes all five channels in the same direction, the SI8650 is the correct fit; if one channel needs to cross the barrier in the opposite direction, the SI8651 is the one."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI8651BB-B-IU","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/skyworks/SI8651BB-B-IU 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}}