{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EE-SX770","brand":"Omron","brandSlug":"omron","productSlug":"EE-SX770","canonicalUrl":"https://icboms.com/omron/EE-SX770","factsUrl":"https://icboms.com/api/mcp/products/EE-SX770","rawCanonicalId":null},"summary":{"shortDescription":"Omron EE-SX770, Through-Beam Optical Sensor, 5 mm sensing distance, NPN Open Collector/Dark-ON output, 5 V supply, -25°C to 55°C, Chassis Mount with M3 screw, Tray package.","salesMarkdown":"## Dark-on output — what it means for your PLC input Dark-on means the NPN transistor pulls the output low (sinks current) when the light beam is blocked. With the beam uninterrupted, the output is off (high-impedance). This is standard for fail-safe detection: a broken wire or lost power leaves the output off, which a PLC can interpret as a blocked condition. The switching current is rated at 35 mA — enough to drive a small relay or PLC digital input directly. ## Temperature range — indoor automation, not the oven Rated for -25°C to 55°C ambient. This covers most factory-floor and warehouse environments but does not extend to hot machine enclosures, paint booths, or freezer applications. If the sensor sits near a motor housing or oven wall, check the local ambient temperature at the mounting point — not the room average. ## Sourcing and lifecycle The EE-SX770 is listed as Active — no end-of-life notice on file, no last-time-buy clock running. It is available through independent distribution and can be quoted to order. For a BOM freeze or long-term supply plan, this part is currently stable; no need to chase an alternate yet.","metaTitle":"Omron EE-SX770 Through-Beam Optical Sensor, 5 mm, NPN Dark-ON","metaDescription":"Omron EE-SX770 through-beam optical sensor, 5 mm slot, NPN open collector dark-on output, 5 V supply, -25°C to 55°C. Active lifecycle, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"output_type":"NPN - Open Collector/Dark-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":"$37.94","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 EE-SX770 datasheet?","answer":"The Omron EE-SX770 datasheet covers the through-beam slot sensor with 5 mm sensing distance, NPN open-collector dark-on output, 5 V supply, and -25°C to 55°C operating temperature. It is available from Omron's documentation portal or through component distributors."},{"question":"What is the EE-SX770 equivalent?","answer":"A close functional peer is the Omron EE-SPX305-W2A, which also uses NPN open-collector dark-on output and a through-beam slot. The EE-SPX305-W2A has a wire-lead mounting instead of M3 screw and a narrower temperature range of -10°C to 55°C. Verify the mounting and temperature requirements before substituting."},{"question":"What does dark-on mean for EE-SX770?","answer":"Dark-on means the NPN output transistor turns on (sinks current to ground) when the light beam is blocked. When the beam is clear, the output is off. This is a fail-safe logic: a blocked beam equals an active output, so a wiring fault or power loss defaults to the blocked state."},{"question":"How to connect EE-SX770 to a PLC?","answer":"Wire the output to a PLC sinking (NPN) digital input. With a 5 V supply, the open-collector output pulls down when the beam is blocked. Use a pull-up resistor on the PLC input if the module expects a voltage signal; otherwise, the NPN transistor sinks the input current directly. The 35 mA switching current is sufficient for most PLC input cards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/omron/EE-SX770","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/omron/EE-SX770 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-13T21:08:28.398Z","lastPublished":"2026-07-13T21:08:28.398Z","indexable":true}}