{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER28HE","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER28HE","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER28HE","factsUrl":"https://icboms.com/api/mcp/products/VIPER28HE","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPer™ plus series, VIPER28HE, flyback PWM switcher, 800V breakdown, 16W output, 115kHz switching, through-hole SDIP-10 package.","salesMarkdown":"## Flyback switcher for 16 W isolated supplies The STMicroelectronics VIPER28HE is a monolithic flyback PWM controller with an integrated 800 V power MOSFET, part of the VIPer™ plus series. It delivers up to 16 W in an isolated topology, switching at 115 kHz. The 80 % duty cycle ceiling and built-in fault protection — current limiting, over-temperature, over-voltage, and short-circuit — suit it for auxiliary and bias supplies in industrial and consumer power converters. ## Sourcing a discontinued part — what to expect The VIPER28HE is listed as obsolete. For BOM lines that cannot migrate to a newer VIPer device, the remaining supply is limited to independent-distributor inventory and surplus channels. ## Ratings that set the design envelope The 800 V breakdown voltage (Vdss) provides margin for universal AC input flyback designs. The 115 kHz fixed switching frequency balances transformer size and switching losses. ## Package and thermal fit Housed in a 10-SDIP (0.300\", 7.62 mm) through-hole package, the VIPER28HE mounts directly into a PCB.","metaTitle":"VIPER28HE STMicro VIPer plus Flyback PWM, 800V 16W SDIP-10","metaDescription":"VIPER28HE is an obsolete STMicro VIPer™ plus flyback PWM with 800V breakdown, 16W output, 115kHz switching.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","Series":"VIPer™ plus","Package":"Tube","Topology":"Flyback","Duty Cycle":"80%","Mounting Type":"Through Hole","Power (Watts)":"16 W","Package / Case":"10-SDIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Fault Protection":"Current Limiting, Over Temperature, Over Voltage, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER28","Voltage - Breakdown":"800V","Frequency - Switching":"115kHz","Operating Temperature":"-40°C~150°C(TJ)","Supplier Device Package":"10-SDIP","Voltage - Supply (Vcc/Vdd)":"8.5V ~ 23.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$71.2500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55b2c8c935ecfad556fe35aa5fbab12b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER28HE/alternatives.json"},"ai":{"faq":[{"question":"What is the power rating of VIPER28HE?","answer":"The VIPER28HE is rated for 16 W output in an isolated flyback topology."},{"question":"What package is VIPER28HE in?","answer":"The VIPER28HE comes in a 10-SDIP (0.300\", 7.62 mm) through-hole package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER28HE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER28HE 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}}