{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLP388(D4-TPR,E","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TLP388D4-TPRE","canonicalUrl":"https://icboms.com/toshiba/TLP388D4-TPRE","factsUrl":"https://icboms.com/api/mcp/products/TLP388(D4-TPR%2CE","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba TLP388(D4-TPR,E transistor output optocoupler, DC input, single channel, 5000Vrms isolation, 350V VCEO max, 50% to 600% CTR at 5mA, 2µs/3µs rise/fall, -55°C to 125°C, 6-SOIC 4-lead package, Surface Mount.","salesMarkdown":"## 350V VCEO in a 4-lead SOIC — what it buys you The Toshiba TLP388(D4-TPR,E is a single-channel DC-input transistor-output optocoupler in a 6-SOIC package with only 4 leads populated. Its headline rating is a 350V collector-emitter breakdown (VCEO max) — that puts it in the high-voltage opto class, capable of switching 48V telecom rails, 110V DC bus voltages in industrial controls, or driving the gate of a high-side MOSFET through a bootstrap circuit. The 5000Vrms isolation rating qualifies it for reinforced insulation in mains-referenced feedback paths, motor drive IGBT gate drive, and medical equipment where patient protection is a regulatory requirement. ## Switching speed and CTR — design boundaries Typical turn-on and turn-off times are both 3µs, with rise and fall at 2µs and 3µs respectively. ## Temperature range and environment Operating temperature range is -55°C to 125°C. ## Package and mounting Housed in a 6-SOIC body with a 4.40mm width and 0.173\" pitch, but only 4 leads are electrically connected — the two centre pins are omitted, leaving a 4-lead footprint that matches the standard SOIC-6 land pattern. Surface-mount only.","metaTitle":"TLP388(D4-TPR,E optocoupler, 5000Vrms, 350V VCEO","metaDescription":"Toshiba TLP388(D4-TPR,E transistor output optocoupler, DC input, 5000Vrms isolation, 350V max output, 50-600% CTR at 5mA, -55°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 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)":"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":"$0.78","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":"Where can I buy TLP388(D4-TPR,E and what is the current price?","answer":"The TLP388(D4-TPR,E is available to order through independent distribution."},{"question":"Is TLP388(D4-TPR,E a direct replacement for TLP385?","answer":"The evidence does not confirm a direct cross-reference between TLP388(D4-TPR,E and TLP385. The TLP388 series shares the same package and ratings across its suffix variants (D4GB-TR,E, GB-TPL,E, TPR,E), but a pin-to-pin or functional replacement for the TLP385 should be verified against the specific TLP385 datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TLP388D4-TPRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TLP388D4-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}}