{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"T405-700B-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"T405-700B-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/T405-700B-TR","factsUrl":"https://icboms.com/api/mcp/products/T405-700B-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics T405-700B-TR, Logic - Sensitive Gate TRIAC, Single, 700 V Off State, 4 A RMS On State, Surface Mount DPAK, -40°C to 125°C.","salesMarkdown":"## Logic-level sensitive-gate TRIAC for 230 VAC loads The STMicroelectronics T405-700B-TR is a single-channel logic-level sensitive-gate TRIAC rated for 700 V off-state voltage and 4 A RMS on-state current, housed in a surface-mount DPAK (TO-252) package. Its 5 mA maximum gate trigger current lets it switch directly from a microcontroller GPIO or optocoupler output without an intermediate driver transistor, simplifying the BOM on AC load-control boards. ## Gate drive and hold current margins Maximum gate trigger voltage is 1.3 V, so a logic output can drive it through a current-limiting resistor. The 10 mA maximum holding current means the TRIAC stays latched once triggered as long as the load current stays above that threshold.","metaTitle":"STMicroelectronics T405-700B-TR TRIAC","metaDescription":"ST T405-700B-TR logic-level sensitive-gate TRIAC, 700V off-state, 4A RMS, DPAK surface mount. Active production, ROHS3. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Triac Type":"Logic - Sensitive Gate","Configuration":"Single","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Voltage - Off State":"700 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"DPAK","Current - Hold (Ih) (Max)":"10 mA","Current - Gate Trigger (Igt) (Max)":"5 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"4 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"30A, 31A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.29","priceTiers":[{"qty":1,"price":"$1.29000","currency":"USD"},{"qty":10,"price":"$1.15600","currency":"USD"},{"qty":100,"price":"$0.90110","currency":"USD"},{"qty":500,"price":"$0.74438","currency":"USD"},{"qty":1000,"price":"$0.64680","currency":"USD"},{"qty":2500,"price":"$0.64680","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/48084296574f91b045b9c46f17354319.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/T405-700B-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent part for T405-700B-TR?","answer":"The closest functional peer is the T405-600B, which shares the same 4 A RMS rating and DPAK footprint but is rated for 600 V off-state instead of 700 V. For a higher-current alternative, the ACST610-8GTR offers 6 A RMS at 800 V in a similar surface-mount package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/T405-700B-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/T405-700B-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}