{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AQY221N1SX","brand":"Panasonic Electric Works","brandSlug":"panasonic-electric-works","productSlug":"AQY221N1SX","canonicalUrl":"https://icboms.com/panasonic-electric-works/AQY221N1SX","factsUrl":"https://icboms.com/api/mcp/products/AQY221N1SX","rawCanonicalId":null},"summary":{"shortDescription":"Panasonic Electric Works PhotoMOS™ AQY series, Signal Relay, SPST-NO (1 Form A), Surface Mount, 4-SOP, 120 mA, 40 V, Gull Wing.","salesMarkdown":"The AQY221N1SX is listed as obsolete by Panasonic Electric Works, meaning the manufacturer no longer produces this exact order code (cites:). For a BOM that already carries this relay, the 120 mA load current at 40 V and the 1.14 VDC input threshold are the fit-critical parameters — the SPST-NO circuit and 4-SOP footprint are the mechanical constraints (cites:,). ## Parametric profile — 120 mA, 12.5 Ohm on-state Rated for 120 mA continuous load current across 0 V to 40 V AC or DC — the RF output type means it handles RF signal switching without adding significant distortion (cites:,). On-state resistance is 12.5 Ohms maximum, which sets the voltage drop at full load to about 1.5 V — relevant for low-voltage signal paths where the relay's own drop must stay below the logic threshold (cites:,). ## Sourcing an obsolete relay No official successor order code is recorded in the lifecycle data — a pin-compatible replacement within the PhotoMOS AQY family would need to match the 4-SOP footprint, SPST-NO circuit, and 1.14 V input threshold (cites:,).","metaTitle":"AQY221N1SX Panasonic PhotoMOS Relay, SPST-NO, 120 mA, 40 V","metaDescription":"Obsolete Panasonic AQY221N1SX PhotoMOS relay, SPST-NO, 120 mA load, 40 V, 4-SOP package. Sourced to order against RFQ through independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Signal Relays"],"specifications":{"Mfr":"Panasonic Electric Works","Series":"PhotoMOS™ AQY","Circuit":"SPST-NO (1 Form A)","Package":"Tape & Reel (TR)","Output Type":"AC, DC (RF)","Load Current":"120 mA","Mounting Type":"Surface Mount","Package / Case":"4-SOP (0.173\\\", 4.40mm)","Product Status":"Obsolete","Voltage - Load":"0 V ~ 40 V","Voltage - Input":"1.14VDC","lifecycle_stage":"unknown","Termination Style":"Gull Wing","Base Product Number":"AQY22","Supplier Device Package":"4-SOP","On-State Resistance (Max)":"12.5 Ohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/35c529f187256195b63c75f746558a30.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to AQY221N1SX?","answer":"No official successor is recorded in the lifecycle data. A functional replacement within the PhotoMOS AQY family must match the 4-SOP footprint, SPST-NO circuit, 1.14 V input threshold, and 120 mA / 40 V load rating — verify the pinout and drive voltage before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/panasonic-electric-works/AQY221N1SX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/panasonic-electric-works/AQY221N1SX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}