{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS108-8TN-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"ACS108-8TN-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/ACS108-8TN-TR","factsUrl":"https://icboms.com/api/mcp/products/ACS108-8TN-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics ACS108-8TN-TR, ACS™/A.S.D® series, Logic-Level Sensitive-Gate TRIAC, Single, 800 V Off-State, 800 mA RMS On-State, Surface Mount SOT-223, -40°C to 125°C.","salesMarkdown":"## What this 800 V, 800 mA sensitive-gate TRIAC is for The STMicroelectronics ACS108-8TN-TR is a logic-level sensitive-gate TRIAC from the ACS™/A.S.D® series, designed for AC load switching where a microcontroller or logic output directly fires the gate. Its 800 V off-state voltage and 800 mA RMS on-state current suit it for low-power mains-voltage applications: small fans, solenoid valves, incandescent lamp dimmers, and resistive heating elements in appliances or industrial controls. ## SOT-223 package — board space vs thermal management The SOT-223 surface-mount package (TO-261-4 variant) is a compact three-lead power package with a large tab for heat sinking. For a production BOM, this part can be qualified without planning for a forced redesign cycle. The ACS™/A.S.D® series has been a stable ST product line for years, and the active status suggests continued manufacturing support.","metaTitle":"ST ACS108-8TN-TR TRIAC, 800V, 800mA, SOT-223","metaDescription":"STMicroelectronics ACS108-8TN-TR logic-level sensitive-gate TRIAC. 800V off-state, 800mA RMS, SOT-223. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"ACS™/A.S.D®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"ACS™/A.S.D®","Package":"Tape & Reel (TR); Cut Tape (CT)","Triac Type":"Logic - Sensitive Gate","Configuration":"Single","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","lifecycle_stage":"eol_hot","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"SOT-223","Current - Hold (Ih) (Max)":"10 mA","Current - Gate Trigger (Igt) (Max)":"5 mA","Voltage - Gate Trigger (Vgt) (Max)":"1 V","Current - On State (It (RMS)) (Max)":"800 mA","Current - Non Rep. Surge 50, 60Hz (Itsm)":"13A, 13.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.57","priceTiers":[{"qty":1,"price":"$0.57000","currency":"USD"},{"qty":10,"price":"$0.49000","currency":"USD"},{"qty":100,"price":"$0.36570","currency":"USD"},{"qty":500,"price":"$0.28730","currency":"USD"},{"qty":1000,"price":"$0.22201","currency":"USD"},{"qty":2000,"price":"$0.21560","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5c01051eb6ef0c6f2216e7c00cf1a303.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ACS108-8TN-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest second-source or equivalent for ACS108-8TN-TR?","answer":"The ACS108-8SN-TR is a near-identical sibling from the same ACS™/A.S.D® series — same 800 V off-state, same 800 mA RMS, same SOT-223 package, same sensitive gate. The difference is the temperature range: the -8SN is rated -30°C to 125°C, while the -8TN covers -40°C to 125°C. For indoor or mild-climate builds the -8SN is a functional drop-in; for cold environments or wide-temperature specs, the -8TN is the correct choice."},{"question":"What are the key technical specifications of ACS108-8TN-TR?","answer":"It is a logic-level sensitive-gate TRIAC rated for 800 V off-state voltage and 800 mA RMS on-state current. Gate trigger is 5 mA max at 1 V max, so a microcontroller GPIO can drive it directly. The hold current is 10 mA max. It can handle a non-repetitive surge of 13 A at 50 Hz or 13.7 A at 60 Hz."},{"question":"What package does ACS108-8TN-TR come in?","answer":"It is supplied in a surface-mount SOT-223 package (TO-261-4, TO-261AA). The TR suffix means it ships in Tape & Reel; it is also available in Cut Tape for smaller quantities."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/ACS108-8TN-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/ACS108-8TN-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}}