{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SI83418BDA-IF","brand":"Skyworks Solutions","brandSlug":"skyworks","productSlug":"SI83418BDA-IF","canonicalUrl":"https://icboms.com/skyworks/SI83418BDA-IF","factsUrl":"https://icboms.com/api/mcp/products/SI83418BDA-IF","rawCanonicalId":null},"summary":{"shortDescription":"Skyworks Solutions SI83418BDA-IF SPI digital isolator, magnetic coupling, 4-channel unidirectional, 1500Vrms isolation, 32-VFDFN exposed pad, tray.","salesMarkdown":"## SPI Isolated Smart Switch with Integrated Power The SI83418BDA-IF is a 4-channel SPI digital isolator from Skyworks Solutions using magnetic coupling technology, designed as an isolated smart switch with integrated isolated power. Rated for 1500Vrms isolation voltage with a minimum common mode transient immunity of 100kV/µs, this part maintains signal integrity across the isolation barrier in motor drive and inverter applications where fast voltage transients are present on the power stage. ## Supply Rails and Timing at Temperature The device operates from a dual supply: 2.25V to 5.5V on the logic side and 9V to 32V on the power side, covering both 3.3V/5V logic interfaces and industrial 24V field supplies without external level shifting. Propagation delay is 3.7µs max for both tpLH and tpHL, and the rise/fall time is 3µs typical — the SPI clock rate must be constrained so that data settles within this window, particularly when daisy-chaining multiple isolators on the same bus. All four channels are unidirectional with all inputs on side 1 (4/0 configuration), meaning this part handles downstream signalling from a controller to isolated loads — no return channel for status feedback on the same die, so a separate upstream isolator is needed for bidirectional SPI (MISO).","metaTitle":"Skyworks SI83418BDA-IF Digital Isolator, SPI, 1500Vrms","metaDescription":"Skyworks SI83418BDA-IF 4-channel SPI digital isolator with magnetic coupling, 1500Vrms isolation, 100kV/µs CMTI, active production. Request quote.","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)":"-, 3µs","Supplier Device Package":"32-DFN (9x9)","Propagation Delay tpLH / tpHL (Max)":"3.7µs, 3.7µs","Common Mode Transient Immunity (Min)":"100kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.55","stockQuantity":19,"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":"Will SI83418BDA-IF drop into a board designed for SI83404AAA-IF without rewiring?","answer":"Both parts share the same 4-channel unidirectional SPI interface, 4/0 input configuration, and 100kV/µs common mode transient immunity, but the SI83404AAA-IF has different propagation delay specs (2.3µs/2.9µs typical vs 3.7µs max for the SI83418BDA-IF) — verify the SPI timing budget allows the longer delay before direct substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/skyworks/SI83418BDA-IF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/skyworks/SI83418BDA-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}}