{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP385(GB-TPR,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP385GB-TPRE","canonicalUrl":"https://icboms.com/toshiba/TLP385GB-TPRE","factsUrl":"https://icboms.com/api/mcp/products/TLP385(GB-TPR%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP385(GB-TPR,E transistor output optocoupler, 1-channel, DC input, 5000Vrms isolation, 100-600% CTR at 5mA, 80V output, 50mA output current, 6-SOIC 4-lead package, surface mount, -55°C to 110°C.","salesMarkdown":"## What this optocoupler does in the assembly The Toshiba TLP385(GB-TPR,E is a single-channel transistor-output optocoupler in a compact 4-lead SOIC-6 package. It provides 5000Vrms of galvanic isolation between a DC input LED and a phototransistor output, making it a straightforward choice for breaking ground loops, translating logic levels across an isolation barrier, or driving low-side loads in industrial and power-conversion circuits. The 5000Vrms isolation voltage is the defining spec for this optocoupler. It qualifies the part for reinforced insulation in mains-connected equipment — think AC-DC power supplies, motor drives, and industrial sensors that need to keep the low-voltage control side electrically separate from the high-voltage power stage. For a designer, this rating means the TLP385 can sit across a safety barrier without needing a separate isolation transformer or a more expensive digital isolator, as long as the data rate stays within its switching limits. ## CTR range and switching speed — design margin callouts The current transfer ratio spans 100% minimum to 600% maximum at a forward current of 5mA. That wide spread means the output transistor can sink anywhere from 5mA to 30mA for the same 5mA input — the designer must bias the output pull-up for the worst-case minimum CTR, not the typical mid-point. The rise and fall times are 2µs and 3µs respectively, with turn-on and turn-off both at 3µs typical. This is a slow optocoupler suited for DC signal isolation, 50/60Hz zero-crossing detection, or low-speed digital interfaces up to a few tens of kilohertz — not for high-speed comms like SPI or CAN. ## Output ratings and package The output transistor is rated for 80V maximum collector-emitter voltage and 50mA continuous output current per channel, with a typical Vce(saturation) of 300mV. That gives enough headroom to drive a small relay, a logic gate input, or a low-side MOSFET gate through a resistor. The package is a 6-SOIC body with only 4 leads populated — a 4.40mm wide SOIC footprint that hand-solders easily. The forward voltage is a typical 1.25V, and the LED can take up to 50mA continuous DC forward current. ## Lifecycle and sourcing It is RoHS compliant per the listing.","metaTitle":"Toshiba TLP385(GB-TPR,E Optocoupler, 5000Vrms Isolation","metaDescription":"Toshiba TLP385(GB-TPR,E transistor output optocoupler with 5000Vrms isolation, 100-600% CTR at 5mA, -55°C to 110°C range.","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)":"100% @ 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":"Can TLP385 replace PC817?","answer":"The TLP385 and PC817 are both single-channel transistor-output optocouplers in similar SOIC-4 packages, but they are not guaranteed pin-compatible without checking the specific footprint. The TLP385 offers a higher isolation voltage (5000Vrms) and a wider CTR range (100-600% at 5mA). Verify the pinout and CTR requirements against your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP385GB-TPRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP385GB-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}}