{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTA12-800CWRG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BTA12-800CWRG","canonicalUrl":"https://icboms.com/stmicroelectronics/BTA12-800CWRG","factsUrl":"https://icboms.com/api/mcp/products/BTA12-800CWRG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Snubberless™ series, BTA12-800CWRG, Alternistor TRIAC, Single, 800 V off-state, 12 A RMS on-state, 35 mA Igt, TO-220AB Insulated, -40°C to 125°C.","salesMarkdown":"## Alternistor Snubberless — no RC snubber needed for inductive loads The ST BTA12-800CWRG is an Alternistor-Snubberless TRIAC rated for 800 V off-state voltage and 12 A RMS on-state current. The Snubberless™ construction means it commutates inductive loads — motors, solenoids, transformers — without the external RC snubber that standard triacs need, saving two components and a chunk of board area. It lives in a TO-220AB insulated package (the tab is electrically isolated, so you can bolt it to a shared heatsink without an insulating pad). ## 800 V off-state and 12 A RMS — sizing the load and the heatsink The 800 V Vdrm gives you headroom on a 240 VAC line (peak ~340 V) or even a 480 VAC line-to-line (peak ~680 V) with margin. The 12 A RMS continuous rating sets the load power: at 240 VAC that is roughly 2880 W resistive, but inductive loads need derating for power factor and inrush. Gate trigger current is 35 mA max, gate trigger voltage 1.3 V max — a standard logic-level optocoupler or a small-signal transistor can drive it directly. Holding current is also 35 mA max, so it stays latched once triggered unless the load current drops below that threshold. Non-repetitive surge current is 120 A at 50 Hz, 126 A at 60 Hz — that is the peak the die can survive for one half-cycle. Useful for capacitive loads or motor start where the inrush can be 10× the steady-state current. ## Active production, ROHS3, through-hole package The tab is electrically isolated, which simplifies heatsinking in a metal enclosure — no mica washer needed, just thermal compound.","metaTitle":"ST BTA12-800CWRG TRIAC, 800V 12A Snubberless, TO-220AB","metaDescription":"STMicroelectronics BTA12-800CWRG Alternistor Snubberless TRIAC, 800V off-state, 12A RMS, TO-220AB insulated. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":"Snubberless™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"Snubberless™","Package":"Tube","Triac Type":"Alternistor - Snubberless","Configuration":"Single","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"BTA12","Voltage - Off State":"800 V","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"TO-220AB Insulated","Current - Hold (Ih) (Max)":"35 mA","Current - Gate Trigger (Igt) (Max)":"35 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"12 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"120A, 126A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0200","priceTiers":[{"qty":1,"price":"$2.02000","currency":"USD"},{"qty":10,"price":"$1.67700","currency":"USD"},{"qty":100,"price":"$1.33490","currency":"USD"},{"qty":500,"price":"$1.12956","currency":"USD"},{"qty":1000,"price":"$0.95841","currency":"USD"},{"qty":2000,"price":"$0.91049","currency":"USD"},{"qty":5000,"price":"$0.87626","currency":"USD"},{"qty":10000,"price":"$0.84725","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5ef651cdc3141726518fd3e56c11b109.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BTA12-800CWRG/alternatives.json"},"ai":{"faq":[{"question":"Is BTA12-800CWRG a snubberless triac?","answer":"Yes. The BTA12-800CWRG is classified as an Alternistor - Snubberless type. It is designed to commutate inductive loads without an external RC snubber network."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BTA12-800CWRG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BTA12-800CWRG 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}}