{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP290(Y-TP,SE","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP290Y-TPSE","canonicalUrl":"https://icboms.com/toshiba/TLP290Y-TPSE","factsUrl":"https://icboms.com/api/mcp/products/TLP290(Y-TP%2CSE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP290(Y-TP,SE optocoupler, 1-channel transistor output, 3750Vrms isolation, 50-150% CTR at 5mA, AC/DC input, 80V output max, 4-SOIC surface-mount package, -55°C to 110°C.","salesMarkdown":"## Isolation and CTR — the two numbers that decide the fit The TLP290(Y-TP,SE is a single-channel transistor-output optocoupler from Toshiba, rated for 3750Vrms isolation between input and output. That isolation voltage is the primary safety spec — it determines whether the part meets basic insulation requirements for mains-referenced circuits or reinforced insulation in a 250Vrms environment. The current transfer ratio (CTR) is specified as 50% minimum and 150% maximum at a forward current of 5mA. This range tells you the gain spread you must budget for: at the low end, the output transistor pulls only 2.5mA collector current for 5mA LED drive; at the high end, it pulls 7.5mA. If your downstream logic threshold needs a guaranteed collector current at a given LED current, you design around the 50% floor, not the typical. ## AC/DC input — one part for both polarities The input side accepts both AC and DC drive, which means the LED conducts on both half-cycles of an AC waveform. This is useful when the signal source is a bipolar AC line (e.g., zero-crossing detection from a mains transformer) or when you want to avoid a polarity-sensitive assembly step. The forward voltage is 1.25V typical, and the maximum continuous forward current is 50mA — derate for pulse operation if driving from a higher-voltage rail through a series resistor. ## Switching speed and output ratings Rise and fall times are 2µs and 3µs typical; turn-on and turn-off times are both 3µs typical. This puts the part in the general-purpose speed class — fine for 10 kHz to maybe 50 kHz switching, but not for high-speed digital isolation above 100 kHz. The output transistor is rated for 80V collector-emitter voltage and 50mA continuous current. Saturation voltage is 300mV maximum at the rated drive, which is low enough to interface with 3.3V or 5V logic without a pull-up resistor adjustment. ## Temperature range and package Operating temperature spans -55°C to 110°C, which covers industrial, automotive cabin, and some military/aerospace applications. The 4-SOIC package (4.55mm body width) is a compact surface-mount footprint. For 3750Vrms isolation in a 4-pin SOIC, the creepage distance is typically around 4mm — verify against your required clearance for the working voltage. ## Lifecycle and sourcing For dual-sourcing consideration, the TLP292(TPL,E is a functional peer with the same 3750Vrms isolation, transistor output, and AC/DC input, but its operating temperature extends to 125°C — a difference worth noting if your thermal budget pushes past 110°C.","metaTitle":"TLP290(Y-TP,SE Optocoupler, 3750Vrms, 50-150% CTR, 4-SOIC","metaDescription":"TLP290(Y-TP,SE optocoupler from Toshiba: 3750Vrms isolation, transistor output, 50-150% CTR at 5mA, AC/DC input, -55°C to 110°C, 4-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"AC, DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SOIC (0.179\\\", 4.55mm Width)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"2µs, 3µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SO","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"150% @ 5mA","Current Transfer Ratio (Min)":"50% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.25V","Turn On / Turn Off Time (Typ)":"3µs, 3µs","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.50000","currency":"USD"},{"qty":10,"price":"$0.32800","currency":"USD"},{"qty":100,"price":"$0.21720","currency":"USD"},{"qty":1000,"price":"$0.16766","currency":"USD"},{"qty":2500,"price":"$0.15150","currency":"USD"},{"qty":5000,"price":"$0.14140","currency":"USD"},{"qty":12500,"price":"$0.13635","currency":"USD"},{"qty":25000,"price":"$0.13433","currency":"USD"},{"qty":62500,"price":"$0.12878","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e51270ae728885d2476c4b6c0c53a59c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of TLP290(Y-TP,SE?","answer":"This means the output collector current ranges from 2.5mA to 7.5mA for a 5mA LED drive. Design the input resistor and output pull-up around the 50% minimum to guarantee logic-level switching across all units."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP290Y-TPSE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP290Y-TPSE 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}}