{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER38LDTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER38LDTR","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER38LDTR","factsUrl":"https://icboms.com/api/mcp/products/VIPER38LDTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER38LDTR, VIPer™ plus series, offline flyback switching regulator, 20 W output, 800 V breakdown, 60 kHz fixed frequency, 16-SOIC package, surface mount.","salesMarkdown":"## 20 W flyback with 800 V MOSFET for universal-input supplies The VIPER38LDTR integrates a 800 V avalanche-rugged power MOSFET and a PWM controller, delivering up to 20 W in a flyback topology without an external power switch. The 60 kHz fixed switching frequency keeps transformer design straightforward, while the 80% maximum duty cycle supports wide input-voltage ranges typical of offline AC-DC converters. ## Parametric deep-dive: protection, supply, and thermal range On-chip fault protection includes current limiting, over-voltage, over-temperature, and short-circuit — reducing the need for external sensing and latch-off circuitry. The Vcc supply range of 8.5 V to 23.5 V and a 14 V start-up threshold allow direct operation from the rectified bulk capacitor without an auxiliary winding pre-regulator in many designs. ## Sourcing and lifecycle: active production, 16-SOIC on tape-and-reel","metaTitle":"VIPER38LDTR – STMicro VIPer™ plus Flyback Switcher, 20 W","metaDescription":"STMicroelectronics VIPER38LDTR offline flyback switcher, 20 W output, 800 V breakdown MOSFET, 60 kHz fixed frequency, 16-SOIC. Active production. Request quote.","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":"Tape & Reel (TR) Cut Tape (CT)","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, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"14 V","Base Product Number":"VIPER38","Voltage - Breakdown":"800V","Frequency - Switching":"60kHz","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"},{"qty":12500,"price":"$0.63838","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a696cf0acaadb5ba91932b998396a995.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER38LDTR/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum power output of VIPER38LDTR?","answer":"The rated power is 20 W in a flyback topology. Actual deliverable power depends on thermal management — the 16-SOIC package requires adequate PCB copper area for heat dissipation."},{"question":"Is VIPER38LDTR an isolated flyback converter?","answer":"Yes, the output isolation is listed as Isolated, making it suitable for offline AC-DC supplies requiring galvanic isolation between primary and secondary."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER38LDTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER38LDTR 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}}