{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER100ASPTR-E","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER100ASPTR-E","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER100ASPTR-E","factsUrl":"https://icboms.com/api/mcp/products/VIPER100ASPTR-E","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER™ series VIPER100ASPTR-E, flyback switching regulator, 100 W output, 700 V breakdown, 8 V to 15 V supply, up to 200 kHz switching, PowerSO-10 exposed pad, surface mount.","salesMarkdown":"## 100 W flyback in a PowerSO-10 — what it takes The STMicroelectronics VIPER100ASPTR-E is a monolithic flyback switching regulator from the VIPER™ series, integrating the power MOSFET and control logic in a single PowerSO-10 Exposed Bottom Pad package. It delivers up to 100 W in an isolated flyback topology — a dense power stage for offline AC-DC converters, auxiliary supplies, and industrial bias rails. The controller runs from an 8 V to 15 V supply rail, with an 11 V startup threshold. ## Switching frequency and control features Switching frequency goes up to 200 kHz, letting the designer shrink the transformer and output filter compared to a 65 kHz flyback. The trade-off is higher switching losses in the MOSFET — the thermal pad on the PowerSO-10 needs a good copper pour and vias to the ground plane to keep the junction temperature under control at full load. Control features include an enable pin, frequency control, and soft start — enough flexibility to synchronise with an external clock or implement burst-mode at light load. Fault protection covers current limiting and over-temperature shutdown, both built-in without external sense resistors.","metaTitle":"STMicro VIPER100ASPTR-E Flyback Switching Regulator, 100 W","metaDescription":"Obsolete STMicro VIPER100ASPTR-E flyback switching regulator, 100 W output, 700 V breakdown, PowerSO-10 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPER™","Package":"Tape & Reel (TR) Cut Tape (CT)","Topology":"Flyback","Duty Cycle":"-","Mounting Type":"Surface Mount","Power (Watts)":"100 W","Package / Case":"PowerSO-10 Exposed Bottom Pad","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"EN, Frequency Control, Soft Start","Fault Protection":"Current Limiting, Over Temperature","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"11 V","Base Product Number":"VIPER100","Voltage - Breakdown":"700V","Frequency - Switching":"Up to 200kHz","Operating Temperature":"-","Supplier Device Package":"10-PowerSO","Voltage - Supply (Vcc/Vdd)":"8V ~ 15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/81c8fe18993a005daa1cccf8222897b1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER100ASPTR-E/alternatives.json"},"ai":{"faq":[{"question":"Is VIPER100ASPTR-E obsolete?","answer":"Yes, the VIPER100ASPTR-E is listed as Obsolete. It is not recommended for new designs, and existing BOM lines should plan for a replacement or secure final inventory through the surplus channel."},{"question":"What is the replacement for VIPER100ASPTR-E?","answer":"Later VIPER™ series parts (such as the VIPER26 or VIPER35 families) operate in similar power ranges, but pin compatibility and control feature alignment are not documented — expect a board-level redesign to migrate."},{"question":"What is the operating power of VIPER100ASPTR-E?","answer":"The VIPER100ASPTR-E is rated for 100 W output in a flyback topology."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER100ASPTR-E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER100ASPTR-E 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}}