{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"T1620T-8I","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"T1620T-8I","canonicalUrl":"https://icboms.com/stmicroelectronics/T1620T-8I","factsUrl":"https://icboms.com/api/mcp/products/T1620T-8I","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics Snubberless™ series, T1620T-8I, Alternistor - Snubberless Triac, Single, 800 V off-state, 16 A RMS, TO-220-3 through-hole, -40°C to 150°C junction.","salesMarkdown":"The STMicroelectronics T1620T-8I is a Snubberless™ Alternistor triac in a TO-220-3 through-hole package. It switches AC loads up to 16 A RMS with an 800 V off-state voltage rating, and it is designed to commutate inductive loads — motors, solenoids, transformers — without the external RC snubber that standard triacs need. ## 16 A RMS and 800 V — what the ratings mean on the panel The 16 A RMS current rating is the continuous load this triac can handle when properly heatsunk. For a resistive heater drawing 12 A continuous, you have headroom. For a motor with a 15 A locked-rotor inrush, the 120 A / 126 A non-repetitive surge rating covers the start-up event. The 800 V off-state voltage gives margin on a 480 VAC line (peak ~679 V) and handles mains transients without avalanche failure. Gate trigger is specified at 20 mA max with a 1.3 V max gate trigger voltage — standard logic-level drive from a microcontroller or optocoupler will fire it directly. ## Active production — no LTB worry The Snubberless™ series remains a current product line from ST.","metaTitle":"ST T1620T-8I Snubberless Triac, 16 A RMS, 800 V, TO-220","metaDescription":"ST T1620T-8I Snubberless Alternistor triac, 16 A RMS, 800 V off-state, TO-220-3. Active production.","metaKeywords":null},"attributes":{"series":"Snubberless™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"Snubberless™","Package":"Tube","Triac Type":"Alternistor - Snubberless","Configuration":"Single","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"TO-220","Current - Hold (Ih) (Max)":"25 mA","Current - Gate Trigger (Igt) (Max)":"20 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"16 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"120A, 126A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.43","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.43000","currency":"USD"},{"qty":10,"price":"$1.27400","currency":"USD"},{"qty":100,"price":"$0.99320","currency":"USD"},{"qty":500,"price":"$0.82050","currency":"USD"},{"qty":1000,"price":"$0.71295","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0fb19625a0d8091b2ab346489d6f52bf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum RMS current of T1620T-8I?","answer":"The T1620T-8I is rated for 16 A RMS continuous on-state current. Non-repetitive surge current is 120 A at 50 Hz and 126 A at 60 Hz."},{"question":"Is T1620T-8I suitable for AC switching applications?","answer":"Yes. It is an Alternistor - Snubberless triac rated for 800 V off-state and 16 A RMS, designed for AC load switching including inductive loads without an external snubber. Typical applications include motor drives, heating elements, and lighting control."},{"question":"What is the equivalent or alternative for T1620T-8I?","answer":"Within the same Snubberless™ series, the T1635T-8FP is a functional alternative with the same 800 V and 16 A rating but in a TO-220FP insulated package. The T1235T-8FP is a lower-current (12 A) option in the same series. No direct pin-compatible second source from another manufacturer is listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/T1620T-8I","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/T1620T-8I when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T11:22:47.947Z","lastPublished":"2026-07-16T11:22:47.947Z","indexable":true}}