{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTB24-800CWRG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BTB24-800CWRG","canonicalUrl":"https://icboms.com/stmicroelectronics/BTB24-800CWRG","factsUrl":"https://icboms.com/api/mcp/products/BTB24-800CWRG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Snubberless™ series, BTB24-800CWRG, Alternistor Triac, 800 V off-state, 25 A RMS on-state, TO-220-3 through-hole, -40°C to 125°C.","salesMarkdown":"## 25 A RMS, 800 V — sizing the triac for the load The BTB24-800CWRG is an STMicroelectronics Snubberless™ Alternistor triac rated for 800 V off-state voltage and 25 A RMS on-state current. It handles the full-wave AC load in applications like motor speed controllers, industrial heaters, and professional lighting dimmers where the load current peaks well above the continuous rating. The non-repetitive surge current rating is 250 A at 50 Hz and 260 A at 60 Hz — this covers inrush from incandescent lamps or motor start-up without exceeding the device's SOA. ## Snubberless™ — no RC network needed The Alternistor construction with Snubberless™ technology means the triac can commutate inductive loads — fans, pumps, transformer-coupled loads — without an external snubber RC network. This saves two passives per phase and reduces PCB area. Gate trigger current is 35 mA max, gate trigger voltage 1.3 V max — compatible with standard optocoupler or microcontroller-driven gate drive circuits. The 50 mA max holding current ensures the device latches on through the zero-cross of a typical AC mains cycle. ROHS3 compliant. ## TO-220 package — thermal design Through-hole TO-220-3 package with the tab as the thermal path. Heatsink selection depends on the RMS load current and ambient — the 25 A rating assumes a properly sized heatsink; at lower currents a clip-on or PCB-mount heatsink may suffice.","metaTitle":"STMicro BTB24-800CWRG Triac, 800V 25A TO-220, Snubberless™","metaDescription":"STMicroelectronics BTB24-800CWRG Alternistor triac, 800 V off-state, 25 A RMS on-state. Snubberless™ for inductive loads. 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":"BTB24","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"TO-220","Current - Hold (Ih) (Max)":"50 mA","Current - Gate Trigger (Igt) (Max)":"35 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"25 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"250A, 260A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.7400","priceTiers":[{"qty":1,"price":"$2.87000","currency":"USD"},{"qty":10,"price":"$2.58100","currency":"USD"},{"qty":100,"price":"$2.11450","currency":"USD"},{"qty":500,"price":"$1.80008","currency":"USD"},{"qty":1000,"price":"$1.79025","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a7ec6eb92d98eec8dda3a7a4bfd76262.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BTB24-800CWRG/alternatives.json"},"ai":{"faq":[{"question":"Is the BTB24-800CWRG a snubberless triac?","answer":"Yes, the BTB24-800CWRG is an STMicroelectronics Snubberless™ Alternistor triac. It is designed to commutate inductive loads without an external snubber RC network."},{"question":"What is the recommended heatsink for the BTB24-800CWRG?","answer":"At the full 25 A RMS rating, a substantial forced-air or large extruded heatsink is required to keep the junction below 125°C. For lower currents, a smaller clip-on or bolt-on heatsink may be adequate. Refer to the thermal resistance data in the datasheet for your specific load condition."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BTB24-800CWRG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BTB24-800CWRG 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}}