{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AQY221N2M","brand":"Panasonic Electric Works","brandSlug":"panasonic-electric-works","productSlug":"AQY221N2M","canonicalUrl":"https://icboms.com/panasonic-electric-works/AQY221N2M","factsUrl":"https://icboms.com/api/mcp/products/AQY221N2M","rawCanonicalId":null},"summary":{"shortDescription":"Panasonic Electric Works PhotoMOS™ AQY series, SPST-NO (1 Form A) solid-state relay, 120 mA load current, 0 V ~ 40 V load voltage, 12.5 Ohms on-resistance, 4-SMD (0.116\", 2.95mm) surface mount, 4-SON package.","salesMarkdown":"## PhotoMOS relay for RF and low-level signal switching The Panasonic AQY221N2M is a solid-state relay from the PhotoMOS AQY series, designed for switching AC or DC signals, including RF paths, in instrumentation and telecom boards. Rated for 120 mA continuous load current at up to 40 V, with a maximum on-state resistance of 12.5 Ohms — the resistance figure matters for signal attenuation in low-level analog paths, where a 12.5 Ohm series element adds a voltage divider with the downstream input impedance. ## Package and board-fit for the 4-SON footprint Housed in a 4-SON package (4-SMD, 0.116\" x 0.116\", 2.95 mm body), the AQY221N2M mounts on a standard surface-mount land pattern — the small footprint suits dense mixed-signal boards where relay height and board area are constrained. The SMD (SMT) Tab termination style means the load-side pads carry the signal current; the thermal path through the tab is minimal at 120 mA, so no special copper spreading is needed for this load level.","metaTitle":"Panasonic AQY221N2M PhotoMOS Relay, 120 mA, 40 V, SPST-NO","metaDescription":"Panasonic AQY221N2M PhotoMOS AQY series solid-state relay, SPST-NO, 120 mA load, 40 V, 12.5 Ohm on-resistance, 4-SON SMD. Obsolete — sourced to order.","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":"Strip","Output Type":"AC, DC (RF)","Load Current":"120 mA","Mounting Type":"Surface Mount","Package / Case":"4-SMD (0.116\\\", 2.95mm)","Product Status":"Obsolete","Voltage - Load":"0 V ~ 40 V","Voltage - Input":"1.14VDC","lifecycle_stage":"unknown","Termination Style":"SMD (SMT) Tab","Base Product Number":"AQY221","Supplier Device Package":"4-SON","On-State Resistance (Max)":"12.5 Ohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.8200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfa3ce0aa62b7049328f9acbc11e0395.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the on-state resistance of the AQY221N2M and why does it matter?","answer":"The maximum on-state resistance is 12.5 Ohms. For a 120 mA load, this adds a 1.5 V drop across the relay at full current — acceptable for 40 V load circuits, but significant for low-voltage analog signals where the series resistance forms a voltage divider with the load impedance."},{"question":"What package does the AQY221N2M use?","answer":"It comes in a 4-SON surface-mount package (4-SMD, 0.116\" body width, 2.95 mm square). The termination style is SMD (SMT) Tab, compatible with standard reflow soldering profiles for small-outline no-lead packages."},{"question":"Can I drive the AQY221N2M input from a 1.8 V logic GPIO?","answer":"Yes — the specified input voltage is 1.14 VDC, so a 1.8 V logic high provides sufficient margin above the threshold. No external level-shifting resistor is needed, but the input current drawn at 1.8 V should be within the GPIO source capability (typically 4-8 mA for most MCUs)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/panasonic-electric-works/AQY221N2M","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/AQY221N2M 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}}