{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER114HSTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER114HSTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER114HSTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER114HSTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER™ series VIPER114HSTR, off-line switching regulator, 800V breakdown, 12W output, 120kHz switching frequency, buck/buck-boost/flyback topology, 10-SSOP package.","salesMarkdown":"## 800 V breakdown — the headroom for universal AC The VIPER114HSTR integrates an 800 V avalanche-rated MOSFET and a 120 kHz PWM controller in a single 10-SSOP package, targeting off-line power supplies up to 12 W in buck, buck-boost, or flyback topology. The 800 V breakdown gives enough margin for universal AC input (85–265 VAC) with reflected voltage and leakage spike headroom, so you are not riding the avalanche limit on a 230 V line. Internal soft-start and a full set of protections — current limiting, over-load, over-voltage, and short-circuit — are on-die, meaning fewer external components on the BOM. ## 12 W in a 10-SSOP — thermal reality At 12 W output in a flyback, expect the junction to rise; the 10-SSOP package relies on the PCB copper area for heat sinking. The 125°C Tj rating gives room for a 70–85°C ambient in a ventilated enclosure, but a sealed plastic housing will need a layout with a solid ground-plane island under the IC. The 4.5 V to 30 V Vcc range means the auxiliary winding can drop well below the start-up threshold (16 V) once the converter is running, and the chip stays alive on a lower rail. It is a current-production part in the VIPER family.","metaTitle":"STMicro VIPER114HSTR off-line switcher, 800V, 12W, 120kHz","metaDescription":"VIPER114HSTR from STMicro VIPER™ series: 800V breakdown, 12W output, 120kHz switching, buck/flyback topology, 10-SSOP package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPER™","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Buck, Buck-Boost, Flyback","Duty Cycle":"80%","Mounting Type":"Surface Mount","Power (Watts)":"12 W","Package / Case":"10-SOP (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"Soft Start","Fault Protection":"Current Limiting, Over Load, Over Voltage, Short Circuit","Output Isolation":"Non-Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"16 V","Base Product Number":"VIPER114","Voltage - Breakdown":"800V","Frequency - Switching":"120kHz","Operating Temperature":"-40°C~125°C(TJ)","Supplier Device Package":"10-SSOP","Voltage - Supply (Vcc/Vdd)":"4.5V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/70c47f40c5ce2bff38b9362cfb539e0d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER114HSTR/alternatives.json"},"ai":{"faq":[{"question":"Does the VIPER114HSTR require an external MOSFET?","answer":"No — the VIPER114HSTR integrates the power switch internally (800 V MOSFET). No external MOSFET is needed for the basic converter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER114HSTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER114HSTR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}