{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP385(Y,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP385YE","canonicalUrl":"https://icboms.com/toshiba/TLP385YE","factsUrl":"https://icboms.com/api/mcp/products/TLP385(Y%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP385(Y,E transistor output optocoupler, 1-channel DC input, 5000Vrms isolation, 50-150% CTR at 5mA, 80V output max, 50mA output per channel, 6-SOIC 4-lead package, -55°C to 110°C, Tube.","salesMarkdown":"## What the 5000Vrms isolation rating means for your BOM The TLP385(Y,E is a single-channel transistor-output optocoupler from Toshiba, built for galvanic isolation between a DC input and a transistor output. Its 5000Vrms isolation voltage qualifies it for safety-barrier applications in industrial power supplies, motor drives, and PLC I/O modules where reinforced isolation is required between the control and load sides. The 80V output maximum gives headroom for driving 24V or 48V logic rails directly, and the 50mA per-channel output is sized for small relays, solenoids, or level-shifting into a downstream gate driver. ## CTR range — the design margin you need to budget The current transfer ratio is specified at 50% minimum to 150% maximum, measured at 5mA forward current. That 3:1 spread means the driven-side collector current can vary from 2.5mA to 7.5mA with a 5mA LED drive. In a production BOM, you size the pull-up resistor and the downstream input threshold for the minimum CTR case; the maximum just means the output saturates faster. The 300mV Vce saturation at the rated output current keeps the logic-low voltage well within TTL or CMOS thresholds. ## Switching speed and timing Rise and fall times are 2µs and 3µs typical, and turn-on/turn-off times are both 3µs typical. That puts the practical switching frequency around 100 kHz or lower — fine for isolating status signals, fault flags, or PWM at a few tens of kHz, but not for high-speed data or fast-switching power supplies. The 1.25V typical forward voltage is standard for an IR LED, and the 50mA absolute-max forward current gives a safe ceiling for pulsed drive. ## Package and footprint Housed in a 6-SOIC package with 4 leads, the TLP385(Y,E uses the standard 4-pin SOIC footprint for single-channel optocouplers. The 0.173-inch body width and 4.40mm height fit the common SOIC-4 land pattern. Surface-mount assembly with Tube handling — no tape-and-reel option on this suffix, so plan for tube-fed pick-and-place or manual loading. ## Temperature range and environment Rated for -55°C to 110°C operating temperature, this optocoupler covers the full industrial range and extends into cold-start environments like outdoor telecom cabinets or engine-bay electronics. The 110°C upper limit is below the 125°C military-grade threshold, but it handles the typical industrial enclosure ambient plus self-heating margin. ## Lifecycle and compliance Listed as Active with RoHS compliance. The RoHS status clears it for EU and most global regulatory requirements without an exemption.","metaTitle":"TLP385(Y,E Optocoupler, 5000Vrms Isolation, 50-150% CTR","metaDescription":"TLP385(Y,E transistor output optocoupler from Toshiba. 5000Vrms isolation, 50-150% CTR at 5mA, 80V output, -55°C to 110°C. Active, RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"6-SOIC (0.173\\\", 4.40mm Width), 4 Leads","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"2µs, 3µs","Voltage - Output (Max)":"80V","Supplier Device Package":"6-SO, 4 Lead","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":"$0.54","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.54000","currency":"USD"},{"qty":10,"price":"$0.35500","currency":"USD"},{"qty":100,"price":"$0.23450","currency":"USD"},{"qty":1000,"price":"$0.18107","currency":"USD"},{"qty":2000,"price":"$0.16362","currency":"USD"},{"qty":5000,"price":"$0.15271","currency":"USD"},{"qty":10000,"price":"$0.14726","currency":"USD"},{"qty":25000,"price":"$0.14508","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/331d269fb9551bcaaac5f6b0e0ad3456.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of TLP385(Y,E?","answer":"That range defines the coupling efficiency between the LED and the phototransistor."},{"question":"What are the best alternatives or equivalents to TLP385(Y,E?","answer":"The TLP385(YH,E and TLP385(GB,E are functionally identical in isolation voltage, output current, and switching speed, differing only in CTR binning or packaging suffix. For a drop-in replacement, check the CTR grade you need — the Y suffix covers 50-150% at 5mA."},{"question":"Is TLP385(Y,E RoHS compliant?","answer":"Yes, the TLP385(Y,E is RoHS compliant, meeting the EU directive for restricted hazardous substances."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP385YE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP385YE 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}}