{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS9851-1-F3-AX","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS9851-1-F3-AX","canonicalUrl":"https://icboms.com/renesas/PS9851-1-F3-AX","factsUrl":"https://icboms.com/api/mcp/products/PS9851-1-F3-AX","rawCanonicalId":null},"summary":{"shortDescription":"Renesas NEPOC series PS9851-1-F3-AX, single-channel DC-input optocoupler, 15 Mbps data rate, push-pull/totem-pole output, 2500 Vrms isolation, 10 kV/µs CMTI, 4.5 V to 5.5 V supply, -40°C to 100°C, 8-SOIC surface-mount package.","salesMarkdown":"## Single-channel digital isolator for industrial interface lanes The Renesas PS9851-1-F3-AX is a single-channel, DC-input optocoupler from the NEPOC series with a push-pull / totem-pole output. It is built for isolating digital signals in industrial communication buses — CAN, RS-485, SPI — where 15 Mbps data rate and 2500 Vrms isolation cover the typical line speed and safety barrier requirements. The output type means it can drive a logic gate input directly without an external pull-up, simplifying the receiver side of the isolation channel. The 10 kV/µs common-mode transient immunity (CMTI) rating is the spec that matters when the part sits across a motor-drive or inverter isolation boundary: fast voltage transients from the switching node are suppressed enough to avoid bit errors on the data line. ## 60 ns propagation delay — timing budget for the bus Maximum propagation delay of 60 ns (tpLH / tpHL) sets the timing budget for a closed-loop control loop or a polled SPI transaction. In a 1 MHz SPI link running at 15 Mbps, the 60 ns delay adds roughly one bit-time of latency per isolation crossing — acceptable for most sensor-to-controller links, but something to verify against the system's worst-case jitter budget. Rise and fall times are both 4 ns typical, giving clean edges that keep signal-integrity reflections low on short board traces inside the same enclosure. ROHS3 compliant per the listing, which matches current European and Asian assembly requirements. For dual-sourcing or higher channel count, the NEPOC family includes the two-channel PS9851-2-F3-AX and PS9851-2-V-F3-AX variants with identical 15 Mbps speed, 60 ns propagation delay, and same 8-SOIC footprint — useful if a board spin adds a second isolated channel. ## Supply rail and drive current Each channel delivers 2 mA output current, enough to drive one CMOS load or a high-impedance ADC input; for heavier loads (opto-MOSFET gate, long cable), buffer externally. Forward voltage is 1.6 V typical at the LED input, with a maximum DC forward current of 20 mA. The 1.6 V Vf is compatible with 3.3 V logic if a series resistor limits the LED current to the 20 mA ceiling. ## Package and temperature grade Housed in an 8-SOIC (3.90 mm width) package, also referred to as 8-SSOP in the supplier device package field. Surface-mount, compatible with standard reflow profiles.","metaTitle":"PS9851-1-F3-AX Optoisolator, 15 Mbps, 2500 Vrms","metaDescription":"PS9851-1-F3-AX NEPOC series optocoupler: 15 Mbps data rate, 2500 Vrms isolation, 10 kV/µs CMTI, push-pull output, -40°C to 100°C.","metaKeywords":null},"attributes":{"series":"NEPOC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"NEPOC","Package":"Tape & Reel (TR); Cut Tape (CT)","Data Rate":"15Mbps","Input Type":"DC","Output Type":"Push-Pull, Totem Pole","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Channels":"1","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 100°C","Inputs - Side 1/Side 2":"1/0","Rise / Fall Time (Typ)":"4ns, 4ns","Supplier Device Package":"8-SSOP","Current - Output / Channel":"2 mA","Voltage - Forward (Vf) (Typ)":"1.6V","Current - DC Forward (If) (Max)":"20mA","Propagation Delay tpLH / tpHL (Max)":"60ns, 60ns","Common Mode Transient Immunity (Min)":"10kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.35","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.56000","currency":"USD"},{"qty":10,"price":"$3.22800","currency":"USD"},{"qty":100,"price":"$2.64360","currency":"USD"},{"qty":500,"price":"$2.42150","currency":"USD"},{"qty":1500,"price":"$2.42150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/141eef12d60591abfd9e6f43673b48c1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the data rate of PS9851-1-F3-AX?","answer":"The data rate is 15 Mbps, suitable for isolating CAN, RS-485, and SPI signals up to that line speed."},{"question":"What is a direct replacement or equivalent for PS9851-1-F3-AX?","answer":"For a dual-channel equivalent in the same footprint, the PS9851-2-F3-AX and PS9851-2-V-F3-AX are pin-compatible two-channel variants with identical 15 Mbps speed and 60 ns propagation delay. For a higher-isolation single-channel alternative, the PS9123-F3-AX offers 3750 Vrms isolation and 15 kV/µs CMTI at the same data rate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS9851-1-F3-AX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/PS9851-1-F3-AX 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}}