{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"T405Q-600H","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"T405Q-600H","canonicalUrl":"https://icboms.com/stmicroelectronics/T405Q-600H","factsUrl":"https://icboms.com/api/mcp/products/T405Q-600H","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics T405Q-600H, Triac Type Logic - Sensitive Gate, 600 V Off State, 4 A RMS On State, Through Hole, TO-251-3 (IPAK), Tube.","salesMarkdown":"## Sensitive-gate triac for low-power drive The STMicroelectronics T405Q-600H is a logic-level sensitive-gate triac rated for 600 V off-state voltage and 4 A RMS on-state current. The 5 mA maximum gate trigger current (Igt) lets a microcontroller GPIO or a low-voltage logic output fire the triac directly, eliminating the driver transistor and its associated bias resistors. That saves roughly three components per phase on a BOM for a small appliance control or a solid-state relay front-end.","metaTitle":"STMicroelectronics T405Q-600H TRIAC","metaDescription":"T405Q-600H sensitive-gate triac from STMicroelectronics, 600V off-state, 4A RMS, 5mA Igt. Active, ROHS3. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Triac Type":"Logic - Sensitive Gate","Configuration":"Single","Mounting Type":"Through Hole","Package / Case":"TO-251-3 Short Leads, IPak, TO-251AA","lifecycle_stage":"eol_hot","Voltage - Off State":"600 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"I-PAK","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)":"35A, 38A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90500","currency":"USD"},{"qty":100,"price":"$0.70530","currency":"USD"},{"qty":500,"price":"$0.58266","currency":"USD"},{"qty":1000,"price":"$0.50628","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1fcce439fc992ec5d7ae1dde1142442d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/T405Q-600H/alternatives.json"},"ai":{"faq":[{"question":"Is T405Q-600H obsolete?","answer":"No, the T405Q-600H is Active in production with no end-of-life notice. It remains a current catalog item from STMicroelectronics."},{"question":"What is the gate trigger current of T405Q-600H?","answer":"The maximum gate trigger current (Igt) is 5 mA, making it a sensitive-gate triac suitable for direct drive from a logic-level output."},{"question":"Can T405Q-600H be used for DC switching?","answer":"A triac is a bidirectional AC switch; once triggered it conducts until the current falls below the holding current (10 mA). For DC loads, the triac will not commutate off because the current never crosses zero, so it is not suitable for DC switching. Use a MOSFET or an IGBT for DC applications."},{"question":"What is the pinout of T405Q-600H?","answer":"The I-PAK (TO-251) package pinout from left to right when the tab faces away: MT2 (main terminal 2), gate, MT1 (main terminal 1). The tab is internally connected to MT2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/T405Q-600H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/T405Q-600H 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}}