{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"T1635H-8I","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"T1635H-8I","canonicalUrl":"https://icboms.com/stmicroelectronics/T1635H-8I","factsUrl":"https://icboms.com/api/mcp/products/T1635H-8I","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics ECOPACK®2 series, Standard Triac, Single, 800 V Off State, 16 A RMS On-State, Through Hole, TO-220-3, -40°C ~ 125°C.","salesMarkdown":"## Standard triac for AC power switching The STMicroelectronics T1635H-8I is a standard triac in the ECOPACK®2 series, rated for 800 V off-state voltage and 16 A RMS on-state current. It comes in a through-hole TO-220AB insulated package, making it a direct fit for AC power control in industrial and commercial equipment — motor speed drives, heater banks, lighting dimmers, and solid-state relay front-ends. The junction temperature range of -40°C to 125°C covers outdoor enclosures and engine-bay environments without derating concerns. ## Lifecycle and sourcing The T1635H-8I carries an Active lifecycle status with ROHS3 compliance. No last-time-buy or end-of-life notice is in effect. The ECOPACK®2 series designation means the package meets ST's halogen-free and antimony-free requirements. Sourced and quoted to order through independent distribution. ## Package and mounting The TO-220AB insulated package (supplier device package TO-220AB Insulated) eliminates the need for an external insulating washer when bolting to a heatsink. Through-hole mounting suits point-to-point wiring.","metaTitle":"STMicroelectronics T1635H-8I Triac","metaDescription":"Standard triac, 800 V off-state, 16 A RMS on-state, 35 mA gate trigger. TO-220AB insulated package, -40 to 125°C. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"ECOPACK®2","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"ECOPACK®2","Package":"Tube","Triac Type":"Standard","Configuration":"Single","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","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)":"16 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"160A, 168A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.61","priceTiers":[{"qty":1,"price":"$1.61000","currency":"USD"},{"qty":10,"price":"$1.44400","currency":"USD"},{"qty":100,"price":"$1.16100","currency":"USD"},{"qty":500,"price":"$0.95384","currency":"USD"},{"qty":1000,"price":"$0.89985","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/faf76fec62e8dfd21f9910adcd29fb3c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/T1635H-8I/alternatives.json"},"ai":{"faq":[{"question":"What is the lifecycle status of T1635H-8I?","answer":"The T1635H-8I is Active in production with ROHS3 compliance. No end-of-life or last-time-buy notice is in effect, so it remains available for new designs and production runs."},{"question":"What is the gate trigger current for T1635H-8I?","answer":"The maximum gate trigger current (Igt) is 35 mA, and the maximum gate trigger voltage (Vgt) is 1.3 V. This is a standard-gate triac, not a sensitive-gate type."},{"question":"Is T1635H-8I suitable for AC switching?","answer":"Yes, the T1635H-8I is a standard triac rated for 800 V off-state and 16 A RMS on-state, designed for AC power control in applications like motor drives, lighting dimmers, and heater control."},{"question":"What is the equivalent or replacement for T1635H-8I?","answer":"The T1635T-8FP is a Snubberless™ alternistor in the same TO-220 footprint with 800 V / 16 A ratings and a wider junction temperature range of -40°C to 150°C. The T1610T-8FP is a sensitive-gate logic triac with the same voltage and current ratings. Neither is a direct pin-for-pin substitute without reviewing the gate drive and snubber requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/T1635H-8I","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/T1635H-8I 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}}