{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ALTAIR05T-800","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"ALTAIR05T-800","canonicalUrl":"https://icboms.com/stmicroelectronics/ALTAIR05T-800","factsUrl":"https://icboms.com/api/mcp/products/ALTAIR05T-800","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics ALTAIR05T-800 offline flyback switcher IC, 800V breakdown, isolated output, internal switch, 16-SOIC (3.90mm width), Tray.","salesMarkdown":"## Flyback switcher with 800 V internal MOSFET The STMicroelectronics ALTAIR05T-800 is an offline flyback switching regulator with an integrated 800 V avalanche-rated MOSFET, designed for isolated AC-DC power supplies up to moderate power levels. The 800 V breakdown voltage gives headroom for direct rectified 230 VAC input plus line transients — a common requirement in industrial auxiliary supplies and appliance power stages. The controller operates from a Vcc range of 11.5 V to 23 V and starts up at 13 V, a typical window for offline flyback controllers powered from the bulk capacitor through a start-up resistor. The output is galvanically isolated, meeting safety isolation requirements for applications where primary-to-secondary separation is mandatory. ## Package and procurement fit The operating temperature range of -25°C to 125°C (junction) covers industrial and commercial environments but does not extend to the -40°C low end required for automotive or some outdoor telecom applications. For wider temperature requirements, the VIPER35 series offers -40°C to 150°C with additional fault protection features, though with a different pinout and higher power capability. It is RoHS3 compliant, free from the six original RoHS substances plus the four phthalates, which simplifies compliance for EU-bound products.","metaTitle":"STMicroelectronics ALTAIR05T-800 Flyback Switcher, 800V","metaDescription":"STMicroelectronics ALTAIR05T-800 offline flyback switcher IC with 800V internal MOSFET, isolated output, 16-SOIC. Active production, RoHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tray","Topology":"Flyback","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"13 V","Voltage - Breakdown":"800V","Operating Temperature":"-25°C ~ 125°C (TJ)","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"11.5V ~ 23V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.37000","currency":"USD"},{"qty":10,"price":"$1.22200","currency":"USD"},{"qty":25,"price":"$1.16000","currency":"USD"},{"qty":80,"price":"$0.95300","currency":"USD"},{"qty":230,"price":"$0.89087","currency":"USD"},{"qty":440,"price":"$0.78727","currency":"USD"},{"qty":1000,"price":"$0.68408","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1022cc25ceb0a796eca5d33387beb493.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for ALTAIR05T-800?","answer":"The ALTAIR05T-800TR is the same die in Tape & Reel packaging — identical electricals, same 16-SOIC footprint. For a higher-power alternative with wider temperature range, the VIPER35HDTR or VIPER35LD are options, but they have different pinouts and additional fault protection."},{"question":"What compliance documentation does STMicroelectronics provide for ALTAIR05T-800?","answer":"The part is RoHS3 compliant. No UL, IEC, or AEC-Q100 certification is listed in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/ALTAIR05T-800","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/ALTAIR05T-800 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}}