{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP385(D4GL-TR,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP385D4GL-TRE","canonicalUrl":"https://icboms.com/toshiba/TLP385D4GL-TRE","factsUrl":"https://icboms.com/api/mcp/products/TLP385(D4GL-TR%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP385(D4GL-TR,E, single-channel transistor-output optocoupler, 5000Vrms isolation, 50% to 600% CTR at 5 mA, 80 V output, 2 µs/3 µs rise/fall, -55°C to 110°C, 4-lead 6-SOIC package, Tape & Reel.","salesMarkdown":"## 5000 Vrms isolation — the safety barrier spec The Toshiba TLP385(D4GL-TR,E is a single-channel, DC-input, transistor-output optocoupler in a compact 4-lead 6-SOIC package (4.40 mm width). Its headline rating is 5000 Vrms of isolation between input and output — the figure that decides whether this part can sit on a mains-referenced secondary side, in a medical patient-contact interface, or across an industrial 24 V to 480 V barrier. The 5000 Vrms rating puts it in the reinforced-isolation class for many applications, though the system-level creepage and clearance still need a PCB layout review. ## CTR spread: 50% to 600% at 5 mA — budgeting the LED drive The current transfer ratio spans 50% minimum to 600% maximum, both specified at a forward current of 5 mA. That 12:1 spread is the single biggest design variable. For the BOM engineer: the minimum CTR of 50% at 5 mA means the output transistor can sink at least 2.5 mA when the LED is driven at 5 mA — that sets the pull-up resistor and the minimum load the output side can drive. The 600% maximum means at the same 5 mA input, the output could sink up to 30 mA, so the collector resistor must be sized to keep Vce below 300 mV saturation at the worst-case high CTR. The 80 V output rating gives headroom for 24 V or 48 V industrial rails. ## Temperature range: -55°C to 110°C — industrial and cold-start environments Rated for -55°C to 110°C operating, this optocoupler covers cold-crank conditions in outdoor telecom cabinets, unheated enclosures in northern climates, and the internal ambient of a motor drive or power supply where the board runs hot. The 110°C upper limit is a practical ceiling for industrial control without stepping to a 125°C-rated part. The 50 mA absolute-maximum forward current and 50 mA output current per channel are typical for a signal-level isolator — not a power relay driver, but fine for PLC digital inputs, isolated I2C, and status LED feedback. ## Switching speed and timing Rise time is 2 µs typical, fall time 3 µs typical; turn-on and turn-off times are both 3 µs typical. These numbers tell you this is a general-purpose optocoupler for 50/60 Hz line synchronization, relay coil driving, and low-speed digital isolation up to maybe 100 kbps. It is not intended for isolated SPI, CAN, or Ethernet — those need a digital isolator or a high-speed optocoupler with sub-microsecond timing. ## Package and mounting The 6-SOIC package uses only 4 leads — the two unused pins are typically no-connects or are removed for creepage distance. ## Lifecycle and compliance Listed as Active with RoHS compliance. The Tape & Reel variant (D4GL suffix) is the standard ordering option for volume pick-and-place; the Cut Tape option suits prototype or low-volume builds.","metaTitle":"Toshiba TLP385(D4GL-TR,E Optocoupler, 5000Vrms, 4-pin SOIC","metaDescription":"Toshiba TLP385(D4GL-TR,E transistor output optocoupler. 5000Vrms isolation, 50-600% CTR at 5mA, 80V output, -55 to 110°C. Active, RoHS.","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":"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)":"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":3000,"price":"$0.16362","currency":"USD"},{"qty":6000,"price":"$0.15271","currency":"USD"},{"qty":15000,"price":"$0.14726","currency":"USD"},{"qty":30000,"price":"$0.14508","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/331d269fb9551bcaaac5f6b0e0ad3456.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the CTR range for TLP385(D4GL-TR,E?","answer":"The current transfer ratio is specified at 5 mA forward current: minimum 50%, maximum 600%. The wide spread means the input drive circuit must be designed for the minimum CTR, while the output load must handle the maximum collector current without saturating the transistor beyond the 300 mV Vce(sat) limit."},{"question":"What is the equivalent or replacement for TLP385(D4GL-TR,E?","answer":"The TLP385(D4GL-TL,E and TLP385(D4GR-TL,E are functionally identical parts from the same TLP385 family — same isolation, CTR, package, and temperature range. The suffix differences (D4GL vs D4GL vs D4GR) indicate tape-and-reel packaging variants or lead-forming options. Any of these can be used as a drop-in replacement in most designs, but verify the specific suffix against your BOM's packaging code before ordering."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP385D4GL-TRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP385D4GL-TRE 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}}