{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TS110-8UF","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TS110-8UF","canonicalUrl":"https://icboms.com/stmicroelectronics/TS110-8UF","factsUrl":"https://icboms.com/api/mcp/products/TS110-8UF","rawCanonicalId":null},"summary":{"shortDescription":"ST TS110-8UF sensitive-gate SCR, 800 V off-state voltage, 1.25 A RMS on-state current, 100 µA max gate trigger, SMBflat-3L surface-mount package, -40°C to 125°C operating temperature.","salesMarkdown":"## 800 V sensitive-gate SCR in a low-profile SMBflat-3L package The ST TS110-8UF is a sensitive-gate silicon controlled rectifier (SCR) rated for 800 V off-state voltage and 1.25 A RMS on-state current, housed in a SMBflat-3L surface-mount package. The sensitive-gate characteristic — 100 µA maximum gate trigger current at 800 mV maximum gate trigger voltage — allows direct drive from a microcontroller I/O pin, an optocoupler output, or a low-power sensor circuit without an intermediate driver transistor. The 800 V off-state voltage (Vdrm/Vrrm) gives you a comfortable derating margin for 230 VAC mains applications — the peak line voltage is about 325 V, so the 800 V rating covers transients and ring-wave events without needing a higher-voltage (and larger) device. The 1.25 A RMS on-state current (It(RMS)) is the continuous current the SCR can carry when fully conducting; the 800 mA average rating (It(AV)) is the more conservative figure for DC or half-wave loads. For a 230 VAC resistive load, 1.25 A RMS corresponds to roughly 290 W — a typical ceiling fan motor, a small pump, or a resistive heater element. The non-repetitive surge rating of 20 A at 50 Hz and 21 A at 60 Hz (Itsm) covers inrush from a motor start or a capacitor charge cycle, but the part is not intended for crowbar or high-energy pulse applications. ## SMBflat-3L footprint and thermal considerations The SMBflat-3L package is a low-profile, three-lead surface-mount package with flat leads — no gull-wing, no J-bend. The flat leads reduce the package height, which suits slim enclosures and single-sided PCB assemblies. The thermal path is through the leads and the small pad area; at 1.25 A RMS continuous, the junction temperature rise will be significant, so a copper pour on the cathode and anode pads is recommended. The part is ROHS3 compliant.","metaTitle":"ST TS110-8UF SCR, 800 V, 1.25 A, Sensitive Gate, SMBflat-3L","metaDescription":"ST TS110-8UF sensitive-gate SCR: 800 V off-state, 1.25 A RMS, 100 µA gate trigger. SMBflat-3L surface-mount package, -40°C to 125°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","SCR Type":"Sensitive Gate","Mounting Type":"Surface Mount","Package / Case":"DO-221AA, SMB Flat Leads","lifecycle_stage":"eol_hot","Voltage - Off State":"800 V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"SMBflat-3L","Current - Hold (Ih) (Max)":"12 mA","Voltage - On State (Vtm) (Max)":"1.6 V","Current - Gate Trigger (Igt) (Max)":"100 µA","Current - On State (It (AV)) (Max)":"800 mA","Voltage - Gate Trigger (Vgt) (Max)":"800 mV","Current - On State (It (RMS)) (Max)":"1.25 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"20A, 21A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.89","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.89000","currency":"USD"},{"qty":10,"price":"$0.78600","currency":"USD"},{"qty":100,"price":"$0.60230","currency":"USD"},{"qty":500,"price":"$0.47616","currency":"USD"},{"qty":1000,"price":"$0.39305","currency":"USD"},{"qty":5000,"price":"$0.39305","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/76f16bf0158fd975c23b0bc8302ceb90.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key electrical ratings of TS110-8UF?","answer":"Key ratings: 800 V off-state voltage, 1.25 A RMS on-state current (800 mA average), 100 µA maximum gate trigger current, 800 mV maximum gate trigger voltage, 12 mA maximum holding current, and a non-repetitive surge current of 20 A at 50 Hz / 21 A at 60 Hz."},{"question":"Is TS110-8UF RoHS compliant?","answer":"Yes, the TS110-8UF is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TS110-8UF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TS110-8UF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T11:34:20.371Z","lastPublished":"2026-07-16T11:34:20.371Z","indexable":true}}