{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"XL0840","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"XL0840","canonicalUrl":"https://icboms.com/stmicroelectronics/XL0840","factsUrl":"https://icboms.com/api/mcp/products/XL0840","rawCanonicalId":null},"summary":{"shortDescription":"XL0840, Sensitive Gate SCR, 400 V Off State, 800 mA RMS On State, 200 µA Gate Trigger, TO-92-3 Through Hole, -40°C to 125°C.","salesMarkdown":"## What this SCR is and where it fits The XL0840 is a sensitive-gate silicon controlled rectifier in a TO-92-3 through-hole package, rated for 400 V off-state and 800 mA RMS on-state continuous current. The 200 µA maximum gate trigger current lets it switch directly from a microcontroller GPIO, a comparator output, or a low-side sensor — no separate driver transistor needed. ## Lifecycle and sourcing The XL0840 carries an Active product status and ROHS3 compliance. No end-of-life notice or last-time-buy window is published. It is sourced through independent distribution and quoted to order against an RFQ — availability and current pricing confirmed at quote time.","metaTitle":"XL0840 SCR, Sensitive Gate, 400 V, 800 mA, TO-92-3","metaDescription":"XL0840 sensitive-gate SCR, 400 V off-state, 800 mA RMS, 200 µA gate trigger. TO-92-3 through-hole. Active, ROHS3. 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":"Bag","SCR Type":"Sensitive Gate","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","lifecycle_stage":"eol_hot","Voltage - Off State":"400 V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"TO-92-3","Current - Hold (Ih) (Max)":"5 mA","Current - Off State (Max)":"1 µA","Voltage - On State (Vtm) (Max)":"1.95 V","Current - Gate Trigger (Igt) (Max)":"200 µA","Current - On State (It (AV)) (Max)":"500 mA","Voltage - Gate Trigger (Vgt) (Max)":"800 mV","Current - On State (It (RMS)) (Max)":"800 mA","Current - Non Rep. Surge 50, 60Hz (Itsm)":"7A, 8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.55","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.44200","currency":"USD"},{"qty":100,"price":"$0.30090","currency":"USD"},{"qty":500,"price":"$0.22566","currency":"USD"},{"qty":1000,"price":"$0.16924","currency":"USD"},{"qty":2500,"price":"$0.15522","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/454322757ad0954ef45a290a983e0fc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the gate trigger current of the XL0840?","answer":"The maximum gate trigger current (Igt) is 200 µA. This low threshold lets the SCR be driven directly from a logic output or a low-current sensor without an intermediate driver stage."},{"question":"What is the closest functional second-source for the XL0840?","answer":"The X00602MA 1AA2 is a sensitive-gate, through-hole, TO-92 SCR with a 600 V off-state rating. It is a functional alternative for designs that can accept the higher voltage headroom."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/XL0840","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/XL0840 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-12T05:49:25.841Z","lastPublished":"2026-07-12T05:49:25.841Z","indexable":true}}