{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TYN412RG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TYN412RG","canonicalUrl":"https://icboms.com/stmicroelectronics/TYN412RG","factsUrl":"https://icboms.com/api/mcp/products/TYN412RG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TYN412RG standard recovery SCR, 400 V off-state voltage, 12 A RMS on-state current, 15 mA gate trigger, TO-220-3 through-hole package, -40°C to 125°C operating temperature.","salesMarkdown":"## 12 A RMS SCR for phase-control and AC switching The STMicroelectronics TYN412RG is a standard-recovery SCR (silicon-controlled rectifier) in a TO-220-3 through-hole package, rated for 400 V off-state voltage and 12 A RMS on-state current. It is designed for medium-current phase-control applications such as motor speed controls, lighting dimmers, heating regulators, and AC power switching where a robust, cost-effective thyristor is needed. With an 8 A average on-state current (It(AV)) and a non-repetitive surge capability of 145 A at 60 Hz, the TYN412RG handles continuous loads up to about 1.8 kW on a 230 VAC line while surviving the inrush from incandescent lamps or motor starts. ## Gate drive and thermal headroom The gate trigger current (Igt) is 15 mA maximum, with a maximum gate trigger voltage of 1.3 V. This sensitivity allows direct drive from a standard optocoupler or a low-power transistor without an intermediate driver stage, simplifying the control circuit. Holding current (Ih) is 30 mA maximum, ensuring the SCR latches on once triggered and does not drop out prematurely under light load. The off-state leakage is just 5 µA, minimising power loss in the blocking state. The on-state voltage (Vtm) is 1.6 V maximum at rated current, which sets the conduction loss floor.","metaTitle":"STMicroelectronics TYN412RG SCR, 400V 12A TO-220-3","metaDescription":"STMicroelectronics TYN412RG standard recovery SCR, 400V off-state, 12A RMS, 15mA Igt, TO-220-3. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tube","SCR Type":"Standard Recovery","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"TYN412","Voltage - Off State":"400 V","Operating Temperature":"-40°C~125°C","Supplier Device Package":"TO-220","Current - Hold (Ih) (Max)":"30 mA","Current - Off State (Max)":"5 µA","Voltage - On State (Vtm) (Max)":"1.6 V","Current - Gate Trigger (Igt) (Max)":"15 mA","Current - On State (It (AV)) (Max)":"8 A","Voltage - Gate Trigger (Vgt) (Max)":"1.3 V","Current - On State (It (RMS)) (Max)":"12 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"140A, 145A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6200","priceTiers":[{"qty":1,"price":"$1.62000","currency":"USD"},{"qty":10,"price":"$1.32300","currency":"USD"},{"qty":100,"price":"$1.02890","currency":"USD"},{"qty":500,"price":"$0.87212","currency":"USD"},{"qty":1000,"price":"$0.71043","currency":"USD"},{"qty":2000,"price":"$0.66879","currency":"USD"},{"qty":5000,"price":"$0.63694","currency":"USD"},{"qty":10000,"price":"$0.60754","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4ca144ca88338d5d4b0ab735fb6ba8a8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TYN412RG/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum current rating of the TYN412RG?","answer":"The maximum RMS on-state current (It(RMS)) is 12 A, and the maximum average on-state current (It(AV)) is 8 A. The non-repetitive surge current (Itsm) is 145 A at 60 Hz."},{"question":"What is the gate trigger current (Igt) of the TYN412RG?","answer":"The maximum gate trigger current (Igt) is 15 mA, with a maximum gate trigger voltage (Vgt) of 1.3 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TYN412RG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TYN412RG 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}}