{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VIPER53ESP-E","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"VIPER53ESP-E","canonicalUrl":"https://icboms.com/stmicroelectronics/VIPER53ESP-E","factsUrl":"https://icboms.com/api/mcp/products/VIPER53ESP-E","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics VIPER™ series, VIPER53ESP-E, flyback AC-DC switcher, 65 W, 620 V avalanche-rated MOSFET, up to 300 kHz, PowerSO-10 exposed pad, -40 to 150 °C.","salesMarkdown":"## 65 W flyback with an avalanche-rated 620 V MOSFET The STMicroelectronics VIPER53ESP-E is a monolithic flyback switcher from the VIPER™ series that integrates a 620 V avalanche-rated power MOSFET and a PWM controller in a single PowerSO-10 package with an exposed bottom pad. ## Thermal and protection envelope for industrial environments The junction temperature range spans -40 to 150 °C, which covers industrial outdoor and enclosed power supplies where ambient temperatures can push 70 °C and self-heating adds another 40-50 °C. The part includes built-in fault protection — current limiting, overload, over-temperature, and short-circuit — so the supply shuts down autonomously on a fault without requiring a supervisor IC or external sense resistor network. ## Switching frequency and control flexibility The internal oscillator runs up to 300 kHz, which lets the designer shrink the flyback transformer core size compared to a 100 kHz design. Control features include an enable pin, frequency control, and soft start — the soft start ramps the duty cycle on power-up to prevent output overshoot and inrush stress on the output capacitor. The supply voltage range is 8.4 to 19 V, with a start-up threshold of 11.5 V.","metaTitle":"VIPER53ESP-E STMicro VIPER Flyback, 65 W, 620 V, PowerSO-10","metaDescription":"VIPER53ESP-E STMicro VIPER series flyback switcher: 65 W, 620 V internal MOSFET, up to 300 kHz, -40 to 150 °C, PowerSO-10. Active lifecycle.","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":"Tube","Topology":"Flyback","Duty Cycle":"-","Mounting Type":"Surface Mount","Power (Watts)":"65 W","Package / Case":"PowerSO-10 Exposed Bottom Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"EN, Frequency Control, Soft Start","Fault Protection":"Current Limiting, Over Load, Over Temperature, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"11.5 V","Base Product Number":"VIPER53","Voltage - Breakdown":"620V","Frequency - Switching":"Up to 300kHz","Operating Temperature":"-40°C ~ 150°C (TC)","Supplier Device Package":"10-PowerSO","Voltage - Supply (Vcc/Vdd)":"8.4V ~ 19V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.6726","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b3dfce6af4449f0679f85a7162e6be0b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/VIPER53ESP-E/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between VIPER53ESP-E and VIPER53ESPTR-E?","answer":"The two parts are electrically identical — same 65 W rating, 620 V MOSFET, and PowerSO-10 package. The difference is the shipping medium: VIPER53ESP-E ships in tube, while VIPER53ESPTR-E ships in tape-and-reel. Choose the reel variant for automated pick-and-place assembly lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/VIPER53ESP-E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/VIPER53ESP-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}}