{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IL222AT","brand":"Vishay","brandSlug":"vishay","productSlug":"IL222AT","canonicalUrl":"https://icboms.com/vishay/IL222AT","factsUrl":"https://icboms.com/api/mcp/products/IL222AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay IL222AT, 1-channel optocoupler, DC input, Darlington with base output, 4000Vrms isolation, 200% min CTR at 1mA, 8-SOIC surface mount, -55°C to 100°C, ROHS3 compliant.","salesMarkdown":"## 4000Vrms isolation with Darlington gain The Vishay IL222AT is a single-channel optocoupler that combines a DC-input LED with a photodarlington output transistor plus a base-access pin. The 4000Vrms isolation rating makes it a fit for applications where galvanic isolation is required between a low-voltage control side and a higher-voltage power or sensor side—think industrial PLC I/O modules, motor-drive feedback, or isolated switching power supplies. The Darlington output delivers a 200% minimum current transfer ratio at only 1 mA forward current, meaning the LED side draws minimal current while the output side can switch up to 30V with a Vce saturation of 1V max. That gain is what lets you drive a relay coil or a logic input from a microcontroller pin through a single resistor. The 8-SOIC package is a common 3.90mm-wide footprint that reflows easily and keeps board area tight. Surface-mount assembly is standard for volume production, and the ROHS3 compliance avoids the REACH paperwork hassle. ROHS3 compliant.","metaTitle":"IL222AT Optocoupler, 4000Vrms Darlington Output, 8-SOIC","metaDescription":"IL222AT optocoupler: 4000Vrms isolation, Darlington with base output, 200% min CTR at 1mA, -55°C to 100°C, 8-SOIC. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Darlington with Base","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"4000Vrms","Vce Saturation (Max)":"1V","Operating Temperature":"-55°C ~ 100°C","Voltage - Output (Max)":"30V","Supplier Device Package":"8-SOIC","Current Transfer Ratio (Min)":"200% @ 1mA","Voltage - Forward (Vf) (Typ)":"1V","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1","priceTiers":[{"qty":1,"price":"$1.10000","currency":"USD"},{"qty":10,"price":"$0.69700","currency":"USD"},{"qty":100,"price":"$0.51570","currency":"USD"},{"qty":500,"price":"$0.47390","currency":"USD"},{"qty":1000,"price":"$0.39026","currency":"USD"},{"qty":2000,"price":"$0.37075","currency":"USD"},{"qty":6000,"price":"$0.36239","currency":"USD"},{"qty":10000,"price":"$0.35403","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/54fc3daa814d84b7d0f4e1217f40e7a0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IL222AT/alternatives.json"},"ai":{"faq":[{"question":"Does IL222AT have a base resistor?","answer":"The IL222AT output is a Darlington pair with a base-access pin, not an integrated base resistor. An external base resistor can be added if needed for switching speed or noise immunity, but the part is designed to operate with the base pin either connected to a control signal or left open for standard photodarlington operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/IL222AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/IL222AT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}