{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS9121-V-F3-AX","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS9121-V-F3-AX","canonicalUrl":"https://icboms.com/renesas/PS9121-V-F3-AX","factsUrl":"https://icboms.com/api/mcp/products/PS9121-V-F3-AX","rawCanonicalId":null},"summary":{"shortDescription":"Renesas NEPOC PS9121-V-F3-AX, single-channel optocoupler, 15Mbps data rate, open collector output, 3750Vrms isolation, 2.7V–3.6V supply, -40°C to 85°C, 5-SO surface mount.","salesMarkdown":"## 15 Mbps isolation that holds the bus The Renesas NEPOC PS9121-V-F3-AX is a single-channel optocoupler with an open-collector output, designed for galvanic isolation in industrial communication links. It switches at 15Mbps — fast enough for standard fieldbus interfaces like RS-485 and CAN isolators, or for isolating encoder and PLC I/O signals. The 3750Vrms isolation rating provides basic insulation for equipment operating in 250 Vrms mains environments, typical for motor drives, servo controllers, and industrial power supplies. ## Open collector output — flexible level translation The open collector output lets you pull up to a different supply voltage than the input side, which is useful when the controller runs at 3.3 V but the receiving logic is 5 V tolerant. Rise and fall times are 20 ns and 5 ns typical, keeping the pulse shape clean at 15 Mbps. Propagation delay is symmetrical at 75 ns max for both low-to-high and high-to-low transitions, which simplifies timing budget calculations in half-duplex links. ## Common-mode transient immunity for noisy environments Rated at 15 kV/µs minimum common-mode transient immunity, the PS9121-V-F3-AX can reject fast voltage transients that couple across the isolation barrier in motor-drive or inverter applications. This rating is measured with the output loaded at 25 mA and the supply at 3.3 V — a realistic condition for industrial gate drives and power-stage feedback. If your system sees higher dV/dt from SiC or GaN switching edges, the RV1S9161 peer offers 100 kV/µs, but for IGBT-based drives below 20 kHz this part's margin is adequate. The input forward voltage is 1.65 V typical, compatible with 3.3 V logic outputs driving the LED through a series resistor sized for 30 mA max. ## Package and footprint Housed in a 5-pin 6-SOIC package with 4.40 mm body width, it shares the same footprint as the standard SOIC-5 optocoupler layout. Surface-mount assembly is standard for reflow soldering; the part is ROHS3 compliant. ## Active lifecycle with no immediate end-of-life risk For a BOM line requiring a 15 Mbps open-collector optocoupler with 3750 Vrms isolation, this part can be qualified for production without an imminent second-sourcing push — though a forward-looking design review should confirm the 5-SO package remains available across the product's expected life.","metaTitle":"PS9121-V-F3-AX NEPOC Optocoupler, 15Mbps, 3750Vrms Isolation","metaDescription":"Renesas PS9121-V-F3-AX NEPOC optocoupler: 15Mbps data rate, 3750Vrms isolation, open collector output, -40°C to 85°C. Active, ROHS3 compliant.","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":"Open Collector","Mounting Type":"Surface Mount","Package / Case":"6-SOIC (0.173\\\", 4.40mm Width), 5 Leads","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 3.6V","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Operating Temperature":"-40°C ~ 85°C","Inputs - Side 1/Side 2":"1/0","Rise / Fall Time (Typ)":"20ns, 5ns","Supplier Device Package":"5-SO","Current - Output / Channel":"25 mA","Voltage - Forward (Vf) (Typ)":"1.65V","Current - DC Forward (If) (Max)":"30mA","Propagation Delay tpLH / tpHL (Max)":"75ns, 75ns","Common Mode Transient Immunity (Min)":"15kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.45","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.45000","currency":"USD"},{"qty":10,"price":"$2.30000","currency":"USD"},{"qty":100,"price":"$1.76980","currency":"USD"},{"qty":500,"price":"$1.59984","currency":"USD"},{"qty":1000,"price":"$1.37486","currency":"USD"},{"qty":2500,"price":"$1.29987","currency":"USD"},{"qty":5000,"price":"$1.26987","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6f1ab5f7afe4c04d0dd20c1b8b3e033e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the data rate of PS9121-V-F3-AX?","answer":"The PS9121-V-F3-AX is rated for a data rate of 15 Mbps, which suits industrial fieldbus isolation up to that speed."},{"question":"Is PS9121-V-F3-AX RoHS compliant?","answer":"Yes, the PS9121-V-F3-AX is ROHS3 compliant per the manufacturer's status."},{"question":"What is the equivalent or replacement for PS9121-V-F3-AX?","answer":"Peer parts with similar 15 Mbps data rate include the RV1S9161ACCSP-100C#KC0 (push-pull output, 125°C temp range) and RV1S9062ACCSP-10YV#KC0 (5000 Vrms isolation, push-pull output). These differ in output type and isolation voltage, so verify pin compatibility for a direct replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS9121-V-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/PS9121-V-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}}