{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP388(GB-TPR,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP388GB-TPRE","canonicalUrl":"https://icboms.com/toshiba/TLP388GB-TPRE","factsUrl":"https://icboms.com/api/mcp/products/TLP388(GB-TPR%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP388(GB-TPR,E transistor output optocoupler, DC input, single channel, 5000Vrms isolation, 350V VCEO max, 100-600% CTR at 5mA, 6-SOIC 4-lead package, -55°C to 125°C.","salesMarkdown":"## 5000Vrms isolation in a 6-SOIC 4-lead package The Toshiba TLP388(GB-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 rated for 350V collector-emitter voltage and 50mA continuous current. The current transfer ratio spans 100% to 600% at a 5mA forward current, giving the designer headroom to accommodate LED degradation over temperature and operating life. Typical rise and fall times are 2µs and 3µs respectively, with symmetrical 3µs turn-on and turn-off times — adequate for 10kHz-class PWM and relay-drive applications in industrial controls, motor drives, and isolated power-supply feedback loops. ## Temperature range and output voltage — fit for harsh environments The 350V output maximum allows direct interface to 277VAC line-monitoring circuits, 48V telecom rails, and 400V-class DC bus voltage sensing when paired with an appropriate input resistor. The 400mV Vce saturation at 50mA keeps power dissipation low in the output transistor, reducing self-heating in the 6-SOIC package.","metaTitle":"TLP388(GB-TPR,E Optocoupler, 5000Vrms, 350V Output","metaDescription":"Toshiba TLP388(GB-TPR,E transistor output optocoupler, 5000Vrms isolation, 350V VCEO, 100-600% CTR at 5mA, -55°C to 125°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)":"400mV","Operating Temperature":"-55°C ~ 125°C","Rise / Fall Time (Typ)":"2µs, 3µs","Voltage - Output (Max)":"350V","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":"$0.78","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.50700","currency":"USD"},{"qty":100,"price":"$0.33200","currency":"USD"},{"qty":1000,"price":"$0.26210","currency":"USD"},{"qty":3000,"price":"$0.24462","currency":"USD"},{"qty":6000,"price":"$0.23589","currency":"USD"},{"qty":15000,"price":"$0.23239","currency":"USD"},{"qty":30000,"price":"$0.22715","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/312d4169544f072d9d6f6356098f22f3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is TLP388(GB-TPR,E obsolete?","answer":"No. It remains suitable for new designs."},{"question":"What is the closest functional equivalent to TLP388(GB-TPR,E?","answer":"The TLP388(GB-TPL,E is a functional equivalent with identical DC input, single-channel transistor output, 5000Vrms isolation, 350V VCEO, and the same 100-600% CTR range. The difference is in the packaging and reel format — the TPR suffix denotes Tape & Reel with Cut Tape option, while TPL adds Digi-Reel® availability. Both are active and RoHS compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP388GB-TPRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP388GB-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}}