{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI83408BDA-IF","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI83408BDA-IF","canonicalUrl":"https://icboms.com/skyworks/SI83408BDA-IF","factsUrl":"https://icboms.com/api/mcp/products/SI83408BDA-IF","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions SI83408BDA-IF Digital Isolator, SPI Type, Magnetic Coupling, 4-Channel Unidirectional, 1500Vrms Isolation, 100kV/µs CMTI, Surface Mount 32-VFDFN Exposed Pad, Tray.","salesMarkdown":"## SPI-controlled isolated smart switch with integrated power The SI83408BDA-IF: It integrates isolated power on the secondary side, eliminating the need for a separate isolated DC-DC converter in the BOM. All four channels are configured as inputs on side 1 (4/0), making this part a downstream switch controller rather than a bidirectional data isolator — it receives SPI commands from a host MCU and drives isolated outputs on the field side. ## Isolation and transient immunity for motor-drive environments Rated at 1500 Vrms isolation voltage, this device provides basic insulation for industrial equipment operating within the IEC 60950-1 reinforced isolation framework when used with proper PCB creepage distances. Common-mode transient immunity of 100 kV/µs minimum means the isolator maintains data integrity when a motor drive or inverter switches at high dV/dt — a 600 V bus switching in 100 ns generates a 6 kV/µs transient, well within this part's margin. Propagation delay is 3.5 µs (tpLH) and 4.5 µs (tpHL) maximum — adequate for relay actuation, valve control, or PLC digital outputs, but not for high-speed data links or encoder feedback. ## Active production and compliance documentation The part is ROHS3 compliant, meaning it contains no restricted substances above the exemption thresholds under EU Directive 2011/65/EU, and is suitable for global shipments without additional compliance paperwork. Surface-mount assembly with a tray shipping format — no tape-and-reel, so pick-and-place feeders require tray handling or a tube-to-tape conversion for high-volume lines. ## Sourcing and cross-reference note The closest functional peer in the same family is the SI83404AAA-IF, which shares the same 4-channel unidirectional SPI architecture and 1500 Vrms isolation but has a slower rise/fall time (3 µs typ vs 2 µs typ) and different propagation delay characteristics.","metaTitle":"Skyworks SI83408BDA-IF Digital Isolator, SPI, 1500Vrms","metaDescription":"Skyworks SI83408BDA-IF digital isolator with SPI interface, 1500Vrms isolation, 100kV/µs CMTI, -40°C to 125°C. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"SPI","Package":"Tray","Technology":"Magnetic Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"Yes","Package / Case":"32-VFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 5.5V, 9V ~ 32V","Number of Channels":"4","Voltage - Isolation":"1500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"4/0","Rise / Fall Time (Typ)":"2µs, -","Supplier Device Package":"32-DFN (9x9)","Propagation Delay tpLH / tpHL (Max)":"3.5µs, 4.5µs","Common Mode Transient Immunity (Min)":"100kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.55","stockQuantity":15,"priceTiers":[{"qty":1,"price":"$7.55000","currency":"USD"},{"qty":10,"price":"$6.81900","currency":"USD"},{"qty":25,"price":"$6.50120","currency":"USD"},{"qty":80,"price":"$5.64513","currency":"USD"},{"qty":260,"price":"$5.39138","currency":"USD"},{"qty":520,"price":"$4.91567","currency":"USD"},{"qty":1040,"price":"$4.28139","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fa86358d15f3b20df9c5b489a04a7b1b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to SI83408BDA-IF?","answer":"The closest functional peer is the SI83404AAA-IF, which shares the same 4-channel unidirectional SPI architecture, 1500 Vrms isolation, and 100 kV/µs CMTI. The main difference is a slower rise/fall time (3 µs typ vs 2 µs typ) and slightly different propagation delay specs. No official second-source exists from another manufacturer."},{"question":"What compliance documentation does Skyworks provide for SI83408BDA-IF?","answer":"The part is ROHS3 compliant under EU Directive 2011/65/EU. Skyworks provides a RoHS certificate of compliance and material declaration upon request. No UL or IEC certification is explicitly listed in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI83408BDA-IF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/skyworks/SI83408BDA-IF 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}}