{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER319HDTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER319HDTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER319HDTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER319HDTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER™ series VIPER319HDTR offline switching regulator, 800V breakdown, 1W output, multi-topology (flyback, buck, boost, buck-boost), 16-SOIC surface-mount package.","salesMarkdown":"## Offline switcher for compact 1 W rails The VIPER319HDTR from STMicroelectronics is a monolithic offline switching regulator that integrates an 800 V avalanche-rugged power MOSFET and a PWM controller. It delivers up to 1 W of output power across flyback, buck, boost, and buck-boost topologies — a single BOM line for non-isolated or isolated auxiliary supplies in appliances, metering, and industrial control. ## Switching frequency and protection set Fixed 132 kHz switching frequency lets you size the transformer or inductor for a compact footprint while keeping switching losses manageable at the 1 W power level. The part includes cycle-by-cycle current limiting, over-voltage, over-temperature, and short-circuit protection — it shuts down before the winding saturates or the junction exceeds 150°C. Start-up voltage is 8 V, and the supply range (Vcc) spans 4.5 V to 30 V, giving headroom for auxiliary winding regulation. Soft-start is built in, so the output ramps without overshoot into a capacitive load. ## 16-SOIC footprint and sourcing posture","metaTitle":"VIPER319HDTR STMicroelectronics Offline Switcher, 800V, 1W","metaDescription":"STMicroelectronics VIPER319HDTR offline switching regulator, 800V breakdown, 1W output, multi-topology (flyback/buck/boost). Active, ROHS3, 16-SOIC.","metaKeywords":null},"attributes":{"series":"VIPER™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPER™","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Boost, Buck, Buck-Boost, Flyback","Duty Cycle":"-","Mounting Type":"Surface Mount","Power (Watts)":"1 W","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Soft Start","Fault Protection":"Over Load, Over Temperature, Over Voltage, Short Circuit","Output Isolation":"Non-Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"8 V","Base Product Number":"VIPER319","Voltage - Breakdown":"800V","Frequency - Switching":"132kHz","Operating Temperature":"-40°C~150°C(TJ)","Supplier Device Package":"16-SO","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7300","priceTiers":[{"qty":1,"price":"$1.73000","currency":"USD"},{"qty":10,"price":"$1.54400","currency":"USD"},{"qty":25,"price":"$1.46560","currency":"USD"},{"qty":100,"price":"$1.20390","currency":"USD"},{"qty":250,"price":"$1.12536","currency":"USD"},{"qty":500,"price":"$0.99452","currency":"USD"},{"qty":1000,"price":"$0.86415","currency":"USD"},{"qty":2500,"price":"$0.86415","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/19a0c69ed7a551ae486ae64c508726b7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER319HDTR/alternatives.json"},"ai":{"faq":[{"question":"How can I order VIPER319HDTR or check availability?","answer":"The VIPER319HDTR is active and ROHS3 compliant. We source it per RFQ — submit your target quantity and we confirm current pricing and lead time from our supply chain. No stock-holding claim; availability confirmed at quote time."},{"question":"Is VIPER319HDTR suitable for a flyback converter design?","answer":"Yes — flyback is one of the listed topologies, and the 800 V breakdown gives margin for universal AC input (85–265 VAC) with standard reflected-voltage snubbing. The 1 W output limit means it fits auxiliary or bias supplies, not main power stages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER319HDTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER319HDTR 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}}