{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER37HD","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER37HD","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER37HD","factsUrl":"https://icboms.com/api/mcp/products/VIPER37HD","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus series, VIPER37HD, offline flyback switching regulator, 20 W output, 800 V breakdown, 115 kHz fixed frequency, 16-SOIC surface-mount package.","salesMarkdown":"## 20 W isolated flyback with 800 V avalanche-rugged MOSFET The VIPER37HD integrates a 800 V avalanche-rugged power MOSFET and a PWM controller in a single 16-SO package, delivering up to 20 W in an isolated flyback topology. The fixed 115 kHz switching frequency simplifies transformer design and EMI filter component selection. Start-up voltage is 14 V, with a Vcc operating range of 8.5 V to 23.5 V, giving headroom for universal AC input designs. The 80% maximum duty cycle supports wide input-voltage variations without pulse-skipping. ## Fault protection and thermal rating Built-in fault protections cover current limiting, over-temperature, and over-voltage — the over-temperature shutdown uses a junction-temperature sense, not a board-level thermistor. STMicroelectronics lists VIPER37HD as Active product status. The base number VIPER37 covers multiple variants; the HD suffix denotes the 16-SO package. ROHS3 compliant. Sourced per RFQ — confirm the BOM quantity and target delivery window. The package is supplied in tube; reel quantities may require a different suffix. 16-SO narrow body (0.154\" width, 3.90 mm body width) — a standard SOIC footprint. Surface-mount only.","metaTitle":"VIPER37HD STMicroelectronics Offline Flyback Switch 20 W","metaDescription":"VIPER37HD from STMicroelectronics VIPer™ plus series. 20 W isolated flyback, 800 V breakdown, 115 kHz switching, 16-SOIC. Active production.","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":"80%","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, Over Voltage","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER37","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":"$1.6500","priceTiers":[{"qty":1,"price":"$1.65000","currency":"USD"},{"qty":10,"price":"$1.47100","currency":"USD"},{"qty":25,"price":"$1.39640","currency":"USD"},{"qty":100,"price":"$1.14710","currency":"USD"},{"qty":250,"price":"$1.07228","currency":"USD"},{"qty":500,"price":"$0.94760","currency":"USD"},{"qty":1000,"price":"$0.74811","currency":"USD"},{"qty":2500,"price":"$0.69823","currency":"USD"},{"qty":5000,"price":"$0.66332","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d9d552d34ede2c4520f8b1ed5651863f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER37HD/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum power output of VIPER37HD?","answer":"Up to 20 W in an isolated flyback topology, assuming adequate transformer design and thermal management."},{"question":"Is VIPER37HD an isolated flyback converter?","answer":"Yes, the output isolation is listed as Isolated, suitable for offline AC-DC supplies requiring galvanic isolation."},{"question":"What fault protection does VIPER37HD include?","answer":"Current limiting, over-temperature, and over-voltage protection are integrated — no external sense resistors or thermistors needed for these functions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER37HD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER37HD 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}}