{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER26HDTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER26HDTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER26HDTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER26HDTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus series, VIPER26HDTR, off-line flyback switcher with 800V avalanche-rugged power MOSFET, 20 W output capability, 115 kHz fixed switching frequency, in a 16-SOIC package.","salesMarkdown":"## 800 V breakdown, 20 W flyback — the design-fit anchor The VIPER26HDTR is an off-line flyback switcher from ST's VIPer™ plus family, integrating a 800 V avalanche-rugged power MOSFET and controller in a single 16-SOIC package. The 20 W output power ceiling tells you the practical design space: auxiliary supplies in appliances, metering, industrial control, and IoT gateways that need an isolated rail from the rectified mains. The 800 V breakdown gives enough headroom for universal input (85–265 VAC) flyback designs without an external clamping snubber on the drain. The 115 kHz fixed switching frequency is a deliberate choice — high enough to shrink the transformer core, low enough to keep switching losses manageable in a SO-16 package. You size the flyback transformer for 115 kHz, not a range. ## Protection set and supply range for the BOM Built-in current limiting and over-temperature shutdown eliminate two external comparators or a supervisor IC. The Vcc operating range is 11.5 V to 23.5 V, with a 13 V startup threshold — the startup resistor and bulk capacitor are sized for that window. The output isolation is configurable as either — you can design a non-isolated buck or an isolated flyback by selecting the feedback winding and optocoupler. The 70% duty cycle limit is typical for flyback in continuous conduction mode; the transformer turns ratio and output voltage set the actual duty. The base product number is VIPER26; the 'H' variant specifies the 20 W / 800 V rating tier within the VIPer™ plus family. Sourced per RFQ — confirm the BOM quantity and preferred distributor channel at quote time.","metaTitle":"VIPER26HDTR ST VIPer plus Off-Line Flyback 800V 20W SO-16","metaDescription":"ST VIPer plus flyback switcher: 800V breakdown, 20W output, 115kHz fixed frequency, current limiting & OTP, active production. SO-16 package.","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":"70%","Mounting Type":"Surface Mount","Power (Watts)":"20 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","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":"16-SO","Voltage - Supply (Vcc/Vdd)":"11.5V ~ 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/4b874ded7660cd395f5453a3691bb931.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER26HDTR/alternatives.json"},"ai":{"faq":[{"question":"What is the output power rating of VIPER26HDTR?","answer":"The VIPER26HDTR is rated for 20 W output power. That is the maximum continuous power in a typical flyback topology with adequate heatsinking; derate for ambient temperature above 25 °C and for higher switching frequencies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER26HDTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER26HDTR 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}}