{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TYN208RG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TYN208RG","canonicalUrl":"https://icboms.com/stmicroelectronics/TYN208RG","factsUrl":"https://icboms.com/api/mcp/products/TYN208RG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TYN208RG, Standard Recovery SCR, Through Hole TO-220-3, 200 V Off State, 5 A Average / 8 A RMS On State, 80 A / 84 A Surge, -40°C to 125°C.","salesMarkdown":"## SCR for phase-control and power-switching — what the ratings mean The STMicroelectronics TYN208RG is a standard-recovery SCR (silicon-controlled rectifier) in a TO-220 through-hole package, rated for 200 V off-state blocking and 5 A average / 8 A RMS on-state conduction. It is designed for medium-current phase-control applications such as AC motor speed controllers, lighting dimmers, heater controls, and inrush current limiters where a simple gate-triggered latch is needed. The 45 mA maximum hold current (Ih) means the SCR will stay latched once triggered as long as the load current stays above that threshold — useful for inductive loads where current may ring near zero. The 25 mA maximum gate trigger current (Igt) and 1.5 V gate trigger voltage (Vgt) are compatible with standard logic-level or optocoupler gate drives, though a series resistor and snubber are typical in AC line designs. ## Sourcing an obsolete SCR — lifecycle and replacement path The TYN208RG is listed as obsolete. For a BOM that requires a TO-220 standard-recovery SCR with 200 V / 5 A average ratings, the buyer should evaluate pin-compatible alternatives from the broader TYN208 family (base product number TYN208) or from other manufacturers' 8 A RMS SCR lines in the same package. ## Thermal and surge handling in the TO-220 package The TO-220 case allows mounting to a heatsink via the metal tab — the 5 A average rating assumes adequate heatsinking; without a heatsink, derate the current significantly. The 5 µA maximum off-state leakage is typical for a standard-recovery SCR at rated voltage and 25°C; leakage doubles roughly every 10°C rise, so at 125°C it can be a factor in standby power budgets.","metaTitle":"STMicroelectronics TYN208RG SCR, 5 A avg / 8 A RMS, 200 V","metaDescription":"Standard recovery SCR, 5 A average / 8 A RMS on-state, 200 V off-state, TO-220 package. Key specs: 45 mA hold current, 25 mA gate trigger, 80 A surge.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tube","SCR Type":"Standard Recovery","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"TYN208","Voltage - Off State":"200 V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"TO-220","Current - Hold (Ih) (Max)":"45 mA","Current - Off State (Max)":"5 µA","Voltage - On State (Vtm) (Max)":"1.6 V","Current - Gate Trigger (Igt) (Max)":"25 mA","Current - On State (It (AV)) (Max)":"5 A","Voltage - Gate Trigger (Vgt) (Max)":"1.5 V","Current - On State (It (RMS)) (Max)":"8 A","Current - Non Rep. Surge 50, 60Hz (Itsm)":"80A, 84A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f28c64118d6d09098ea49e046a7c5422.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TYN208RG/alternatives.json"},"ai":{"faq":[{"question":"Is TYN208RG obsolete and what is a suitable replacement?","answer":"Yes, the TYN208RG is obsolete. No official successor is listed by STMicroelectronics. A pin-compatible replacement should be a TO-220 standard-recovery SCR rated for at least 200 V off-state and 8 A RMS on-state. Candidates include other members of the TYN208 base series or equivalent SCRs from manufacturers like ON Semiconductor, Littelfuse, or WeEn Semiconductors — verify gate trigger and hold current specs against your circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TYN208RG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TYN208RG when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}