{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER28HDTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER28HDTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER28HDTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER28HDTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus, VIPER28HDTR, 16 W flyback offline switcher, 800 V breakdown, 115 kHz switching, 16-SOIC surface-mount package, active production","salesMarkdown":"The VIPER28HDTR is a monolithic offline flyback switcher from ST's VIPer™ plus family, rated for 16 W output with an 800 V breakdown internal switch. That 800 V rating is the headroom you need for universal AC input (85–265 VAC) without derating through the line surges — a common gotcha in 230 V designs where 650 V parts run tight. Switching at 115 kHz, it lands in the sweet spot between transformer size and EMI filter complexity. The 80% duty cycle ceiling gives the controller room to regulate through deep brownout conditions. ## Protection set and supply range Built-in fault protection covers current limiting, over-temperature, over-voltage, and short circuit — four guards that reduce the external component count in a typical charger or auxiliary supply. The VCC range of 8.5 V to 23.5 V and a 14 V start-up threshold mean it powers up cleanly from a bulk cap without an auxiliary winding pre-bias. The 16-SOIC package is a standard footprint, and the Tape & Reel option (Cut Tape also available) matches pick-and-place feeders without a changeover.","metaTitle":"VIPER28HDTR – ST VIPer™ plus 16 W Flyback, 800 V, 115 kHz","metaDescription":"VIPER28HDTR from STMicroelectronics: 16 W flyback offline switcher, 800 V breakdown, 115 kHz switching, 16-SOIC package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"VIPer™ plus","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPer™ plus","Package":"Tape & Reel (TR) Cut Tape (CT)","Topology":"Flyback","Duty Cycle":"80%","Mounting Type":"Surface Mount","Power (Watts)":"16 W","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Fault Protection":"Current Limiting, Over Temperature, Over Voltage, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER28","Voltage - Breakdown":"800V","Frequency - Switching":"115kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"8.5V ~ 23.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4000","priceTiers":[{"qty":1,"price":"$1.40000","currency":"USD"},{"qty":10,"price":"$1.24900","currency":"USD"},{"qty":25,"price":"$1.18560","currency":"USD"},{"qty":100,"price":"$0.97400","currency":"USD"},{"qty":250,"price":"$0.91052","currency":"USD"},{"qty":500,"price":"$0.80464","currency":"USD"},{"qty":1000,"price":"$0.63524","currency":"USD"},{"qty":2500,"price":"$0.59289","currency":"USD"},{"qty":5000,"price":"$0.56325","currency":"USD"},{"qty":12500,"price":"$0.54207","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e0a19c5dbb3cef73062225c3c9e63431.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER28HDTR/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum output power of the VIPER28HDTR?","answer":"The datasheet rates it for 16 W in a flyback topology. That figure assumes adequate heatsinking and airflow; in a sealed, convection-cooled enclosure you should derate by 20–30% depending on ambient temperature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER28HDTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER28HDTR 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}}