{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER26HN","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER26HN","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER26HN","factsUrl":"https://icboms.com/api/mcp/products/VIPER26HN","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus series, VIPER26HN offline flyback switcher, 800 V breakdown, 20 W output, 115 kHz switching, 7-DIP through-hole package.","salesMarkdown":"## 20 W flyback with 800 V avalanche-rated MOSFET The VIPER26HN integrates a 800 V avalanche-rated power MOSFET and a PWM controller in a single 7-lead DIP package, targeting off-line flyback supplies up to 20 W. The 115 kHz switching frequency lets you shrink the transformer core without pushing the MOSFET into excessive turn-off losses — a solid middle ground for auxiliary and bias supplies. ## Start-up, supply range, and protection Start-up happens at 13 V on the Vcc pin; the operating supply range spans 11.5 V to 23.5 V, giving you room to ride through bus ripple on the bias winding. On-chip fault protection includes cycle-by-cycle current limiting and thermal shutdown — the 150 °C junction rating means the thermal foldback kicks in before the silicon sees danger. ## Flyback topology and duty-cycle headroom Rated for flyback topology with output isolation configurable as either isolated or non-isolated. The 70 % maximum duty cycle gives enough headroom for universal AC input designs where the reflected voltage and leakage spike demand a wide on-time window. STMicroelectronics lists the VIPER26HN as Active. The through-hole 7-DIP package keeps it compatible with legacy designs and hand-assembly lines. ROHS3 compliant. ## Sourcing through distribution The 7-DIP through-hole package is widely inventoried across the distribution channel — confirm the exact reel or tube quantity with your quote request.","metaTitle":"VIPER26HN STMicroelectronics 20 W Flyback Switcher 7-DIP","metaDescription":"VIPER26HN active ST VIPer plus offline flyback switcher, 800 V MOSFET, 20 W, 115 kHz, 7-DIP through-hole. Sourced per RFQ.","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":"Tube","Topology":"Flyback","Duty Cycle":"70%","Mounting Type":"Through Hole","Power (Watts)":"20 W","Package / Case":"8-DIP (0.300\\\", 7.62mm), 7 Leads","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Fault Protection":"Current Limiting, Over Temperature","Output Isolation":"Either","Internal Switch(s)":"Yes","Voltage - Start Up":"13 V","Base Product Number":"VIPER26","Voltage - Breakdown":"800V","Frequency - Switching":"115kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"7-DIP","Voltage - Supply (Vcc/Vdd)":"11.5V ~ 23.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4700","priceTiers":[{"qty":1,"price":"$1.47000","currency":"USD"},{"qty":10,"price":"$1.31700","currency":"USD"},{"qty":25,"price":"$1.24960","currency":"USD"},{"qty":100,"price":"$1.02650","currency":"USD"},{"qty":250,"price":"$0.95960","currency":"USD"},{"qty":500,"price":"$0.84800","currency":"USD"},{"qty":1000,"price":"$0.66948","currency":"USD"},{"qty":2500,"price":"$0.62485","currency":"USD"},{"qty":5000,"price":"$0.59360","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4b874ded7660cd395f5453a3691bb931.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER26HN/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum output power of VIPER26HN?","answer":"Rated for 20 W output in a flyback topology. The actual power you can deliver depends on the transformer design, ambient temperature, and heatsinking — the 150 °C junction limit is the hard thermal ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER26HN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER26HN 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}}