{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI8641BD-B-IS2","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI8641BD-B-IS2","canonicalUrl":"https://icboms.com/skyworks/SI8641BD-B-IS2","factsUrl":"https://icboms.com/api/mcp/products/SI8641BD-B-IS2","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions Si864x series, General Purpose Digital Isolator, SI8641BD-B-IS2, 4-channel, 150Mbps, 5000Vrms, Capacitive Coupling, 16-SOIC, Tube.","salesMarkdown":"The SI8641BD-B-IS2 comes in a 16-SOIC wide-body (0.295-inch, 7.50 mm width) package. The 7.50 mm body width is the standard for reinforced isolation — the creepage distance across the package sidewall meets the 5000 Vrms isolation rating, so the board layout does not need additional slotting or potting for basic reinforced isolation. Surface-mount assembly with a standard SOIC-16 footprint; the wide-body variant requires a larger pad pattern than the narrow 3.9 mm SOIC, so confirm the PCB land pattern before tape-out. ## What the isolation and speed ratings mean for your design 5000 Vrms isolation voltage — this is the reinforced isolation class per IEC 60747-5-5, meaning the part can withstand a 5 kV RMS potential between the two sides for 60 seconds. For a motor-drive or grid-tied inverter where the high-voltage side sits at 400 VDC bus, this provides the safety margin required for operator-accessible interfaces. 150 Mbps data rate with 13 ns typical propagation delay — the 150 Mbps ceiling is set by the 13 ns max propagation delay (tpLH/tpHL). At 150 Mbps, the bit period is 6.67 ns, so the 13 ns delay is roughly two bit periods; the part will pass data at that rate, but the output lags the input by two clock edges. For SPI clock lines at 50 MHz (20 ns period), the 13 ns delay adds roughly 65 % of a clock period — budget this into the timing closure. 50 kV/µs common-mode transient immunity — this is the slew rate of a voltage transient that the isolator can reject without corrupting the output. In a motor-drive application where the IGBT switching node swings 600 V in 100 ns (6 kV/µs), the 50 kV/µs rating gives 8× margin. The part will not glitch on the gate-drive edges. ## Channel configuration and supply flexibility Four unidirectional channels with a 3/1 input-side/side-2 split — three channels drive from side 1 to side 2, one channel drives from side 2 to side 1. This is the common SPI isolator map: three forward (SCLK, MOSI, CS) and one reverse (MISO). The unidirectional channel type means each channel has a dedicated input and output; no bidirectional data lines. The 4 ns typical rise/fall time and 4.5 ns max pulse-width distortion keep the signal integrity clean across the full supply range.","metaTitle":"Skyworks SI8641BD-B-IS2 Digital Isolator, 5000Vrms, 150Mbps","metaDescription":"Skyworks SI8641BD-B-IS2 digital isolator, 4-channel, 5000Vrms isolation, 150Mbps data rate, 13ns propagation delay, -40°C to 125°C. Active, ROHS3 compliant.","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 (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.5V ~ 5.5V","Number of Channels":"4","Voltage - Isolation":"5000Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"3/1","Rise / Fall Time (Typ)":"4ns, 4ns","Supplier Device Package":"16-SOIC","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":"$4.68","stockQuantity":18,"priceTiers":[{"qty":1,"price":"$4.68000","currency":"USD"},{"qty":10,"price":"$4.20700","currency":"USD"},{"qty":25,"price":"$3.97680","currency":"USD"},{"qty":100,"price":"$3.44660","currency":"USD"},{"qty":250,"price":"$3.26988","currency":"USD"},{"qty":500,"price":"$2.93404","currency":"USD"},{"qty":1000,"price":"$2.47450","currency":"USD"},{"qty":2500,"price":"$2.35078","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/be2be0cd247effc5bbc93f4ca5c7a629.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for SI8641BD-B-IS2?","answer":"Submit an RFQ — the part is sourced through independent distribution with full lot traceability."},{"question":"Will SI8641BD-B-IS2 drop into a board designed for SI8641BD-B-IS?","answer":"The SI8641BD-B-IS2 and SI8641BD-B-IS share the same 16-SOIC wide-body package, 150 Mbps data rate, 5000 Vrms isolation, and 3/1 channel configuration. The SI8641BD-B-IS2 has a higher common-mode transient immunity (50 kV/µs vs 35 kV/µs) and faster rise/fall time (4 ns vs 2.5 ns). It is a drop-in replacement for the SI8641BD-B-IS without board changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI8641BD-B-IS2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/skyworks/SI8641BD-B-IS2 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}}