{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EE-SX771A","brand":"Omron","brandSlug":"omron","productSlug":"EE-SX771A","canonicalUrl":"https://icboms.com/omron/EE-SX771A","factsUrl":"https://icboms.com/api/mcp/products/EE-SX771A","rawCanonicalId":null},"summary":{"shortDescription":"Omron EE-SX771A through-beam photomicrosensor, 5 mm slot width, NPN open-collector dark-on output, 5 V supply, chassis mount with M3 screws, -25°C to 55°C operating range.","salesMarkdown":"## Omron EE-SX771A — 5 mm through-beam sensor with NPN dark-on output The Omron EE-SX771A is a through-beam photomicrosensor with a 5 mm sensing slot. It uses an NPN open-collector output configured for dark-on operation — meaning the output transistor sinks current when the light path is interrupted. This is the fail-safe wiring choice for edge detection, part-present sensing, or end-of-travel limits on pick-and-place feeders and small assembly machines. The 5 V supply rail matches classic TTL and 5 V PLC inputs directly; no level translator needed. Mounting is via M3 screws to a chassis bracket, with wire leads for the connection. ## Temperature range — indoor and light-industrial only Rated for -25°C to 55°C ambient. That covers most factory floors, warehouse sorters, and office equipment, but not freezers, ovens, or outdoor cabinets in direct sun. If the application sees sustained heat above 55°C — say a motor drive cabinet or a solar-exposed panel — this sensor is not the pick. The EE-SPW311 shares a similar 5 V supply and NPN dark-on output but adds an IP60 rating and adjustable sensing distance up to 39.37 mm, which may suit a wider range of mounting positions. ## Lifecycle and sourcing Listed as Active with no end-of-life notice. That means no rush to stockpile or find a drop-in replacement for existing designs. For new BOMs, it is a stable line item. Sourced and quoted to order through independent distribution; availability and current pricing confirmed at quote time.","metaTitle":"Omron EE-SX771A Through-Beam Sensor, 5 mm Slot, NPN Dark-ON","metaDescription":"Omron EE-SX771A through-beam photomicrosensor, 5 mm sensing slot, NPN open-collector dark-on output, 5 V supply, chassis mount with M3 screws. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"has_mpn":"EE-SX771","output_type":"NPN - Open Collector/Dark-ON","package_type":"Bulk","sensing_type":"Through-Beam","mounting_type":"Chassis Mount, M3 Screw","product_status":"Active","lifecycle_stage":"current","supply_voltage_v":"5.0","switching_current_a":"0.035","sensing_distance_max_mm":"0.197","Operating Temperature High":"-25°C to 55°C(TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$39.74","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.ia.omron.com/data_pdf/cat/ee-sx77_87_ds_e_7_6_csm484.pdf?id=435","sourceUrl":null},"ai":{"faq":[{"question":"What is the datasheet for EE-SX771A?","answer":"The datasheet covers the 5 mm through-beam slot, NPN dark-on output, 5 V supply, and chassis-mount dimensions."},{"question":"What is the closest functional second-source for EE-SX771A?","answer":"The Omron EE-SPX305-W2A is a close functional match — same 5 V supply, NPN dark-on output, 5 mm through-beam slot, and chassis mount with wire leads, though its temperature range is -10°C to 55°C."},{"question":"How to wire EE-SX771A?","answer":"Wire the NPN open-collector output to the PLC input that expects a sinking signal; the output goes low (sinks current) when the beam is blocked. Supply is 5 V DC. The dark-on logic means the transistor is on when the light path is interrupted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/omron/EE-SX771A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/omron/EE-SX771A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}