{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EE-SX870A","brand":"Omron","brandSlug":"omron","productSlug":"EE-SX870A","canonicalUrl":"https://icboms.com/omron/EE-SX870A","factsUrl":"https://icboms.com/api/mcp/products/EE-SX870A","rawCanonicalId":null},"summary":{"shortDescription":"Omron EE-SX870A, Through-Beam Photomicrosensor, NPN Open Collector/Light-ON, 5 V supply, 5 mm sensing distance, Chassis Mount with M3 screw, -25°C to 55°C operating temperature.","salesMarkdown":"## What this slot sensor is and where it fits The Omron EE-SX870A is a through-beam photomicrosensor — a U-shaped slot sensor with an emitter and receiver facing each other across a 5 mm gap. When an opaque object breaks the beam, the NPN open-collector output pulls low (Light-ON logic: output is ON when the beam is uninterrupted). It runs on a regulated 5 V supply and switches up to 35 mA, sized for direct connection to a PLC digital input or a logic-level load. The housing mounts with M3 screws to a chassis or bracket, and the wire leads are brought out for termination at a terminal block or connector. Typical deployment is edge detection, position verification, or part-present sensing on small assembly fixtures, pick-and-place feeders, and lab automation where the 5 mm slot matches the part thickness. ## 5 mm gap — what it means for mounting The 5 mm sensing distance is the physical slot width. The object passing through must be opaque and thick enough to block the beam — thin films or transparent materials may not trigger reliably. Mounting tolerance matters: the emitter and receiver are fixed inside the slot, so alignment is built-in, but vibration or bracket flex that moves the target out of the beam path causes false triggers. The M3 screw mounting gives a rigid attachment point; use a lock washer or thread-locker if the machine cycles fast. ## NPN Light-ON output — wiring and PLC compatibility Output is NPN open-collector, Light-ON: the transistor sinks current when the beam is uninterrupted, and turns off (high-impedance) when the beam is broken. This mates directly with sinking (NPN) PLC input modules — common on Omron, Mitsubishi, and Keyence controllers. The open-collector output also drives a 5 V relay coil or a logic gate input. Maximum switching current is 35 mA; keep the load current within that limit or use an external transistor to drive higher loads. Pull-up resistor to 5 V is needed if the downstream input expects a voltage signal. ## Temperature range and operating environment Rated for -25°C to 55°C ambient. That covers most indoor factory and lab environments but not outdoor, freezer, or oven-adjacent locations. The sensor is not sealed against dust or moisture — no IP rating is listed, so keep it inside a control cabinet or away from coolant splash. The -25°C low end is fine for unheated warehouse storage; operation below that risks LED output droop and brittle wire insulation.","metaTitle":"Omron EE-SX870A Through-Beam Sensor, NPN Light-ON, 5 V, 5 mm","metaDescription":"Omron EE-SX870A through-beam photomicrosensor with NPN open-collector Light-ON output, 5 V supply, 5 mm sensing distance. Active lifecycle, chassis mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"has_mpn":"EE-SX870","output_type":"NPN - Open Collector/Light-ON","package_type":"Tray","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":"Is EE-SX870A NPN or PNP output?","answer":"EE-SX870A has an NPN open-collector output with Light-ON logic — the output sinks current when the beam is uninterrupted."},{"question":"What is the sensing distance of EE-SX870A?","answer":"The EE-SX870A has a 5 mm through-beam sensing distance — the physical gap between emitter and receiver."},{"question":"What voltage does EE-SX870A require?","answer":"The EE-SX870A requires a regulated 5 V supply."},{"question":"What is the operating temperature range of EE-SX870A?","answer":"The EE-SX870A is rated for -25°C to 55°C ambient."},{"question":"Where can I buy EE-SX870A and how is it quoted?","answer":"EE-SX870A is sourced through independent distribution and quoted to order against an RFQ; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/omron/EE-SX870A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/omron/EE-SX870A 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}}