{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACST1035-8FP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"ACST1035-8FP","canonicalUrl":"https://icboms.com/stmicroelectronics/ACST1035-8FP","factsUrl":"https://icboms.com/api/mcp/products/ACST1035-8FP","rawCanonicalId":null},"summary":{"shortDescription":"ST ACST1035-8FP, Standard Triac, 800 V, 10 A, Through Hole, TO-220-3 Full Pack, -40°C to 150°C (TJ), Tube, Active.","salesMarkdown":"## 800 V / 10 A AC switch for resistive and inductive loads The ST ACST1035-8FP is a standard triac rated at 800 V and 10 A, housed in a TO-220FPAB full-pack package. This through-hole device switches AC loads directly — heaters, motors, lighting ballasts, solenoid valves — where a single triac replaces a relay or contactor. The full-pack isolation means the metal tab is electrically isolated from the die, so you can bolt it to a heatsink without an insulating pad, saving assembly time and improving thermal transfer. Junction temperature spans -40°C to 150°C. ## Standard gate — expect higher gate current than logic-level triacs This is a standard triac, not a logic-level or sensitive-gate type. ## Active production — no LTB risk The ACST1035-8FP is listed as Active and ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect. It can be specified into new designs without obsolescence planning. The TO-220FPAB package is a standard ST footprint, so second-sourcing with a functionally similar triac in the same package is straightforward if supply tightens. ## TO-220FPAB — isolated tab, no mica washer needed The full-pack TO-220-3 has the mounting hole and tab fully encapsulated. No insulating bushings or mica washers are required when bolting to a chassis or heatsink.","metaTitle":"ST ACST1035-8FP TRIAC, 800V 10A TO-220FPAB","metaDescription":"ACST1035-8FP standard triac, 800 V, 10 A, TO-220FPAB full-pack. Active lifecycle, -40°C to 150°C junction temp. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tube","Triac Type":"Standard","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"TO-220FPAB"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.60000","currency":"USD"},{"qty":10,"price":"$1.43000","currency":"USD"},{"qty":100,"price":"$1.11490","currency":"USD"},{"qty":500,"price":"$0.92100","currency":"USD"},{"qty":1000,"price":"$0.80028","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3f5e087abd618628263aa36935690629.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy ACST1035-8FP available via RFQ confirmation?","answer":"The ACST1035-8FP is available to order through independent distribution. Submit an RFQ for current pricing and availability — stock levels and lead times are confirmed at quote time, not published on this page."},{"question":"What is the equivalent of ACST1035-8FP?","answer":"There is no direct second-source listed. The closest functional peer is the Z0410MH (600 V / 4 A, 125°C junction), but that part has lower voltage and current ratings. For a higher-current alternative, the T1635H-8I (800 V / 16 A, 125°C junction) offers more headroom but a lower temperature rating. Neither is a pin-for-pin replacement — verify the gate trigger requirements and thermal budget before substituting."},{"question":"Is ACST1035-8FP suitable for AC load control?","answer":"Yes, this is a standard triac designed for AC line switching. The 800 V blocking voltage covers 240 VAC mains with margin for surges; the 10 A rating handles resistive loads like heaters and lighting, and derated inductive loads like small motors and solenoids. The 150°C junction temperature gives extra thermal margin for inrush or stalled-rotor conditions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/ACST1035-8FP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/ACST1035-8FP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}