{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TYN1212RG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TYN1212RG","canonicalUrl":"https://icboms.com/stmicroelectronics/TYN1212RG","factsUrl":"https://icboms.com/api/mcp/products/TYN1212RG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TYN1212RG, Standard Recovery SCR, 1.2 kV off-state voltage, 12 A RMS on-state current, 120 A surge at 50 Hz, TO-220-3 through-hole package, -40°C to 125°C junction temperature.","salesMarkdown":"## 1.2 kV off-state — where this SCR fits The STMicroelectronics TYN1212RG is a standard-recovery SCR rated for 1.2 kV off-state voltage and 12 A RMS on-state current, housed in a TO-220AB through-hole package. This voltage class puts it squarely in 240 VAC line applications with healthy margin — the 1.2 kV Vdrm covers rectified mains up to 400 VDC bus rails and handles the voltage spikes common in motor-start and power-supply circuits without derating anxiety. ## Current handling and surge capability At 12 A RMS continuous, the TYN1212RG handles load currents typical of medium-power phase-control circuits — heater elements, small motor drives, and battery-charger front ends. The non-repetitive surge rating of 120 A at 50 Hz tells you the die can absorb the inrush from a capacitive input filter or a cold-filament load without failing on the first half-cycle. The 30 mA holding current (Ih) is moderate; the gate will drop out cleanly when the load current falls below that threshold, which matters for zero-cross switching circuits that need reliable turn-off at light load. ## Gate drive and thermal design The gate trigger current is 15 mA max, with a trigger voltage of 1.5 V max — a standard logic-level gate driver or a simple resistor from a 5 V or 12 V supply will fire it without a dedicated driver IC. The TO-220AB tab is the thermal path — bolt it to a heatsink with thermal compound; the junction-to-case thermal resistance is the number to budget for the heatsink selection. The 10 µA max off-state leakage at 125°C is low enough that it won't push the gate drive into false triggering on a hot day. The base product number is TYN1212; the RG suffix indicates the tube-packaged variant in TO-220AB.","metaTitle":"STMicroelectronics TYN1212RG SCR, 1.2 kV, 12 A RMS, TO-220-3","metaDescription":"Standard recovery SCR, 1.2 kV off-state voltage, 12 A RMS on-state current, 120 A surge at 50 Hz. Active production, industrial temp range -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"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":"TYN1212","Voltage - Off State":"1.2 kV","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"TO-220AB","Current - Hold (Ih) (Max)":"30 mA","Current - Off State (Max)":"10 µA","Voltage - On State (Vtm) (Max)":"1.6 V","Current - Gate Trigger (Igt) (Max)":"15 mA","Voltage - Gate Trigger (Vgt) (Max)":"1.5 V","Current - On State (It (RMS)) (Max)":"12 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"120A @ 50Hz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0203","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cee7747edc94331274a2a57239f31d4e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TYN1212RG/alternatives.json"},"ai":{"faq":[{"question":"Can TYN1212RG handle 240V AC?","answer":"Yes — the 1.2 kV off-state voltage provides over 5× margin on a 240 VAC peak (339 V). The part is well suited for phase-control and switching applications on 240 VAC lines."},{"question":"What is the difference between TYN1212RG and TYN1212?","answer":"The TYN1212 is the base product number; the RG suffix on TYN1212RG denotes the specific packaging variant — tube packaging in a TO-220AB package. The electrical ratings (1.2 kV, 12 A RMS, 120 A surge) are identical across the base number."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TYN1212RG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TYN1212RG 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}}