{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP385(D4-BL,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP385D4-BLE","canonicalUrl":"https://icboms.com/toshiba/TLP385D4-BLE","factsUrl":"https://icboms.com/api/mcp/products/TLP385(D4-BL%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP385(D4-BL,E transistor output optocoupler, 1-channel DC input, 5000Vrms isolation, 200-600% CTR at 5mA, 80V output, 50mA output, -55 to 110°C, 6-SOIC package, Tube.","salesMarkdown":"## 5000Vrms isolation — the barrier rating that decides fit The Toshiba TLP385(D4-BL,E is a single-channel transistor-output optocoupler in a 4-lead 6-SOIC package, designed for galvanic isolation between a DC input and a transistor output. The headline rating is 5000Vrms of isolation voltage, which sets the reinforced insulation barrier for applications like industrial PLC I/O modules, motor-drive feedback, and isolated sensor interfaces. The current transfer ratio (CTR) is specified at 200% minimum and 600% maximum at a forward current of 5mA, giving the designer a predictable current gain for driving the output transistor — wide enough to absorb LED aging and temperature drift without losing logic-level integrity. A CTR floor of 200% at 5mA means the output transistor can sink at least 10mA when the LED is driven at 5mA, which is more than enough to pull a 5V logic input low through a 470Ω pull-up. The 600% ceiling ensures the part does not saturate too hard, keeping turn-off time predictable. Rise and fall times are 2µs and 3µs typical, and turn-on/turn-off times are both 3µs typical — fast enough for 100 kHz switching or isolated serial data at 115.2 kbps. The 80V output rating and 50mA per-channel output current cover most low-side switching and logic-level translation tasks. The 300mV Vce saturation at the output keeps power dissipation low when driving a relay coil or a small DC load. ## Temperature range and deployment context The 6-SOIC package with 4 leads is a compact surface-mount footprint, saving board area compared to DIP-4 optocouplers while maintaining the same isolation rating. The surface-mount mounting suits automated assembly lines.","metaTitle":"Toshiba TLP385(D4-BL,E Optocoupler, 5000Vrms, 1-Ch DC Input","metaDescription":"Toshiba TLP385(D4-BL,E transistor output optocoupler. 5000Vrms isolation, 200-600% CTR at 5mA, -55 to 110°C. Active, RoHS.","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)":"600% @ 5mA","Current Transfer Ratio (Min)":"200% @ 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 CTR of TLP385?","answer":"The current transfer ratio is 200% minimum and 600% maximum, measured at a forward current of 5mA. This wide range ensures consistent logic-level drive across temperature and LED aging."},{"question":"Is TLP385 compatible with 5V logic?","answer":"Yes. With a minimum CTR of 200% at 5mA, the output can sink over 10mA — enough to pull a 5V logic input low through a standard pull-up resistor. The 80V output rating also allows direct interface to 5V, 12V, or 24V logic families."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP385D4-BLE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP385D4-BLE 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}}