{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP385(D4Y-TPR,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP385D4Y-TPRE","canonicalUrl":"https://icboms.com/toshiba/TLP385D4Y-TPRE","factsUrl":"https://icboms.com/api/mcp/products/TLP385(D4Y-TPR%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP385(D4Y-TPR,E single-channel transistor optocoupler, DC input, 5000Vrms isolation, 50-150% CTR at 5mA, 80V output, 50mA output, 2µs/3µs rise/fall, -55°C to 110°C, 6-SOIC 4-lead surface-mount package, Tape & Reel.","salesMarkdown":"The Toshiba TLP385(D4Y-TPR,E is a single-channel transistor-output optocoupler in a 6-SOIC 4-lead surface-mount package. It provides 5000Vrms galvanic isolation between a DC input LED and a phototransistor output, with a current transfer ratio (CTR) guaranteed between 50% and 150% at a 5mA forward current. The output transistor is rated for 80V and 50mA continuous, making it a fit for isolated feedback in switch-mode power supplies, motor-drive IGBT gate-drive status feedback, PLC digital input modules, and general-purpose signal isolation in industrial controls. The -55°C to 110°C operating range covers both cold-start and under-hood environments without derating. ## 5000Vrms isolation — what it buys you in a real design A 5000Vrms isolation rating means this part passes a 5kV dielectric withstand test for 60 seconds per the component standard. That is enough headroom for reinforced insulation in mains-connected equipment (250V working voltage) and for basic isolation in 480VAC motor-drive applications where transient overvoltages can exceed 2kV. The 6-SOIC 4-lead package with 4.40mm body width provides the creepage distance needed to maintain the rating across the PCB — no slotting required in most designs. ## CTR range and switching speed — design margin decisions The 50% to 150% CTR window at 5mA If is wide enough that you size the input resistor for the minimum CTR to guarantee the output saturates at the load current. At the 50% floor, 5mA in gives 2.5mA available at the output — enough to drive a 1kΩ pull-up to 5V with margin. The 2µs rise and 3µs fall times (typical) and 3µs turn-on/turn-off times keep this part in the low-speed isolation lane: fine for 10kHz PWM feedback, relay coil monitoring, or 9600-baud serial isolation, but not for high-speed data links. If you need sub-microsecond switching, look at a digital isolator or a logic-output optocoupler. ## Package, footprint, and sourcing posture The 6-SOIC 4-lead footprint is shared across the TLP385 family, so the D4Y-TPL,E (different CTR bin or packaging) is a drop-in alternate if the CTR bin is acceptable. The part is RoHS compliant per the listing. Lifecycle status is active, so no near-term end-of-life concern for new designs.","metaTitle":"TLP385(D4Y-TPR,E Toshiba Transistor Optocoupler, 5000Vrms","metaDescription":"Toshiba TLP385(D4Y-TPR,E single-channel transistor optocoupler with 5000Vrms isolation, 50-150% CTR at 5mA, 80V output, -55°C to 110°C.","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)":"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":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 replacement or equivalent for TLP385(D4Y-TPR,E?","answer":"The TLP385(D4Y-TPL,E is a functional equivalent — same 5000Vrms isolation, same CTR range, same package and pinout. The difference is in the packaging or CTR bin suffix; verify the CTR bin matches your design margin before substituting."},{"question":"Is TLP385(D4Y-TPR,E RoHS compliant?","answer":"Yes, the part is listed as RoHS Compliant."},{"question":"How many channels does TLP385 have?","answer":"It is a single-channel optocoupler — one input LED and one output phototransistor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP385D4Y-TPRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP385D4Y-TPRE 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}}