{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"T835T-8G","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"T835T-8G","canonicalUrl":"https://icboms.com/stmicroelectronics/T835T-8G","factsUrl":"https://icboms.com/api/mcp/products/T835T-8G","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Snubberless™ series, T835T-8G, Alternistor - Snubberless Triac, Single, 800 V Off State, 8 A RMS On State, Surface Mount, TO-263-3 / D²PAK, -40°C ~ 125°C.","salesMarkdown":"## What the 800 V / 8 A rating means on the board The STMicroelectronics T835T-8G is an 800 V off-state, 8 A RMS on-state Alternistor triac in the Snubberless™ series, housed in a D²PAK surface-mount package. It is designed for AC load switching where inductive kickback would otherwise demand an external RC snubber — the device's internal structure commutates cleanly without one for many motor, valve, and transformer loads. The 800 V blocking rating covers 240 VAC mains with healthy margin and handles 480 VAC line-to-line in three-phase systems. The 8 A continuous rating suits resistive heaters, small motors, and lighting banks up to about 2 kW on 240 VAC. ## Snubberless™ — what it saves on the BOM The Alternistor – Snubberless construction means the triac can switch inductive loads without the usual RC snubber network across the main terminals. That eliminates a resistor and a capacitor per phase — roughly $0.10–0.20 BOM savings per device, plus the board area and assembly cost. The trade-off is a higher gate trigger current (35 mA max) and hold current (40 mA max) compared to a standard triac, so the gate drive needs to source that current reliably. For a microcontroller-driven optocoupler or pulse transformer, check that the drive circuit can deliver the 35 mA Igt peak at the 1.3 V Vgt threshold. For 8 A RMS continuous, a 1 oz copper pad of at least 6 cm² is typical to keep junction temperature under 125 °C in a 50 °C ambient.","metaTitle":"STMicroelectronics T835T-8G Triac, 800 V, 8 A, D²PAK","metaDescription":"STMicroelectronics T835T-8G Alternistor triac, 800 V off-state, 8 A RMS, Snubberless™, D²PAK surface mount, -40 to 125 °C. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"Snubberless™","Package":"Tube","Triac Type":"Alternistor - Snubberless","Configuration":"Single","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"T835","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"D²PAK","Current - Hold (Ih) (Max)":"40 mA","Current - Gate Trigger (Igt) (Max)":"35 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"8 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"60A, 63A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3674","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d035367b57f6fcb0222b6b8119972f19.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between T835T-8G and T835T-6G?","answer":"The T835T-8G is rated for 800 V off-state voltage; the T835T-6G is rated for 600 V off-state voltage. All other ratings — 8 A RMS on-state current, 35 mA Igt, 40 mA Ih, D²PAK package — are identical. Choose the 800 V version for 480 VAC line-to-line applications or where higher voltage margin is needed."},{"question":"Does T835T-8G require a snubber circuit?","answer":"The T835T-8G is an Alternistor – Snubberless triac. For most inductive loads — motors, solenoids, transformers — it commutates without an external RC snubber, as long as the load current stays within the device's rated 8 A RMS and the dV/dt does not exceed the device's capability. In extreme cases with very high dV/dt (e.g., switching a highly capacitive load), a small snubber may still be needed, but the Snubberless design eliminates it for typical AC motor and heater loads."},{"question":"Can I use T835T-8G for AC motor control?","answer":"Yes, the T835T-8G is suitable for AC motor control — its 800 V off-state rating and 8 A RMS on-state current cover fractional-horsepower single-phase motors on 120 VAC or 240 VAC lines. The Snubberless feature simplifies the drive circuit for inductive motor loads. For larger motors or three-phase drives, consider a higher-current triac or a solid-state relay module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/T835T-8G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/T835T-8G 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}}