{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI8661BB-B-IU","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI8661BB-B-IU","canonicalUrl":"https://icboms.com/skyworks/SI8661BB-B-IU","factsUrl":"https://icboms.com/api/mcp/products/SI8661BB-B-IU","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions SI8661BB-B-IU general-purpose digital isolator, capacitive coupling, 6 unidirectional channels, 150Mbps data rate, 2500Vrms isolation, 16-SSOP package, tube.","salesMarkdown":"## 150 Mbps capacitive isolator with 5/1 channel split The Skyworks SI8661BB-B-IU is a 6-channel general-purpose digital isolator using capacitive coupling technology, rated for 150 Mbps data rate and 2500 Vrms isolation voltage. The channel configuration is 5 inputs on side 1 and 1 input on side 2, all unidirectional — a layout suited for isolating a wide data bus with a single feedback or enable signal crossing the barrier in the opposite direction. Propagation delay is 13 ns max (tpLH / tpHL), with a pulse-width distortion of 4.5 ns max and rise/fall times of 4 ns typical. These timing specs mean the part can carry a 150 Mbps serial stream with minimal skew between channels — important for parallel data buses where lane-to-lane timing margin is tight. Common-mode transient immunity is 50 kV/µs minimum. In a motor-drive or inverter application where the ground plane jumps several hundred volts in a few nanoseconds, that CMTI rating keeps the output from glitching — the isolator holds its state through the transient. No separate VDDIO or level-shifting is needed as long as both sides stay within that window. The 125°C upper limit is the junction temperature — the package thermal resistance (not stated here) will derate the maximum ambient in a high-power system, but for a low-power isolator drawing a few milliamps, the full 125°C ambient is usable. Packaged in a 16-SSOP (3.90 mm width) with the supplier device package designated 16-QSOP. ROHS3 compliant, with no restricted substances above the threshold limits. The part ships in tube packaging — for reel or cut-tape quantities, the sibling order code SI8661BB-B-IS1R uses the same die and package but in tape-and-reel format.","metaTitle":"Skyworks SI8661BB-B-IU Digital Isolator, 150Mbps, 2500Vrms","metaDescription":"Skyworks SI8661BB-B-IU general-purpose digital isolator: 150Mbps data rate, 2500Vrms isolation, 6 unidirectional channels, 16-SSOP.","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":"6","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"5/1","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":"$5.33","stockQuantity":17,"priceTiers":[{"qty":1,"price":"$5.33000","currency":"USD"},{"qty":10,"price":"$4.78400","currency":"USD"},{"qty":25,"price":"$4.52240","currency":"USD"},{"qty":100,"price":"$3.91930","currency":"USD"},{"qty":250,"price":"$3.71832","currency":"USD"},{"qty":500,"price":"$3.33644","currency":"USD"},{"qty":1000,"price":"$2.81386","currency":"USD"},{"qty":2500,"price":"$2.67317","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d0fd34ad18bd716c3bfaa7fe80e62960.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between SI8661BB-B-IU and SI8661BB-B-IS1R?","answer":"The two parts share the same die, package (16-SSOP/16-QSOP), and all electrical ratings — 150 Mbps data rate, 2500 Vrms isolation, 5/1 channel split, 50 kV/µs CMTI. The only difference is packaging: SI8661BB-B-IU ships in a tube, while SI8661BB-B-IS1R ships in tape-and-reel. A board designed for one will accept the other without any layout or BOM change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI8661BB-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/SI8661BB-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}}