{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACST410-8BTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"ACST410-8BTR","canonicalUrl":"https://icboms.com/stmicroelectronics/ACST410-8BTR","factsUrl":"https://icboms.com/api/mcp/products/ACST410-8BTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics ACS™/A.S.D® series, Logic - Sensitive Gate TRIAC, ACST410-8BTR, 800 V off-state, 4 A RMS on-state, DPAK surface-mount package, Tape & Reel.","salesMarkdown":"## Active production, 800 V / 4 A sensitive-gate TRIAC The ACST410-8BTR from STMicroelectronics is an active-production, logic-level sensitive-gate TRIAC rated for 800 V off-state and 4 A RMS on-state continuous current. Holding current is 20 mA maximum, which means the TRIAC latches on once triggered and stays conducting until the load current drops below that threshold — relevant for low-wattage loads that might not sustain conduction through a full half-cycle. ## DPAK footprint and thermal budget The junction temperature range spans -40 °C to 125 °C, covering industrial enclosures and warm-ambient environments where the self-heating from 4 A RMS conduction plus ambient heat must stay under the 125 °C ceiling. Surface-mount assembly on standard reflow profiles; the DPAK tab is the thermal path — copper-pour area on the PCB landing pad sets the effective thermal resistance, not the package alone. ## Surge capability and load type Non-repetitive surge current is 30 A at 50 Hz and 32 A at 60 Hz — this is the inrush the TRIAC can clear once without damage, relevant for capacitive loads (power supplies, LED drivers) or incandescent lamp cold-filament surges. The sensitive-gate classification means the gate is more susceptible to dV/dt false-triggering from line transients than a standard-gate TRIAC — a snubber across the MT1-MT2 terminals is good practice when switching inductive loads like small motors or solenoids. ## Compliance and sourcing posture ROHS3 compliant — no restricted substances in the bill of materials, covering EU RoHS directive exemptions through 2024.","metaTitle":"STMicroelectronics ACST410-8BTR TRIAC, 800V 4A DPAK","metaDescription":"Active STMicroelectronics ACST410-8BTR TRIAC, 800 V off-state, 4 A RMS, logic-level sensitive gate in DPAK. ROHS3 compliant. Quoted to order.","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-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"DPAK","Current - Hold (Ih) (Max)":"20 mA","Current - Gate Trigger (Igt) (Max)":"10 mA","Voltage - Gate Trigger (Vgt) (Max)":"1 V","Current - On State (It (RMS)) (Max)":"4 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"30A, 32A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.84","priceTiers":[{"qty":1,"price":"$0.84000","currency":"USD"},{"qty":10,"price":"$0.68600","currency":"USD"},{"qty":100,"price":"$0.53340","currency":"USD"},{"qty":500,"price":"$0.45214","currency":"USD"},{"qty":1000,"price":"$0.36832","currency":"USD"},{"qty":2500,"price":"$0.34673","currency":"USD"},{"qty":5000,"price":"$0.33022","currency":"USD"},{"qty":12500,"price":"$0.31498","currency":"USD"},{"qty":25000,"price":"$0.31438","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5fa7cd4a6e8e4f75f692194dbffcb3e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ACST410-8BTR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to ACST410-8BTR?","answer":"The ACST310-8BTR is the closest functional sibling: same 800 V off-state voltage, same logic-level sensitive gate, same DPAK package, and same temperature range. The difference is the on-state current rating — 3 A RMS for the ACST310 versus 4 A for the ACST410. If the load draws under 3 A RMS, the ACST310-8BTR drops into the same PCB footprint and gate-drive circuit without changes."},{"question":"Will ACST410-8BTR drop into a board laid out for ACST310-8BTR?","answer":"Yes — both parts share the same TO-252-3 DPAK package and pinout. The ACST410-8BTR is a direct footprint replacement for the ACST310-8BTR, with the same gate sensitivity and voltage rating. No PCB layout change is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/ACST410-8BTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/ACST410-8BTR 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}}