{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-S2-SOLO-U-N4R2","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-S2-SOLO-U-N4R2","canonicalUrl":"https://icboms.com/espressif/ESP32-S2-SOLO-U-N4R2","factsUrl":"https://icboms.com/api/mcp/products/ESP32-S2-SOLO-U-N4R2","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32-S2-SOLO-U-N4R2, ESP32 series, WiFi module, 802.11b/g/n, 150Mbps, 2.4GHz, 4MB Flash, 2MB PSRAM, 40-SMD module, PCB Trace + IPEX antenna.","salesMarkdown":"## Module integration and memory budget The ESP32-S2-SOLO-U-N4R2 is a surface-mount WiFi module from the ESP32 series, integrating an ESP32-S2R2 IC with 4MB flash and 2MB PSRAM in a 40-SMD package. The 2MB PSRAM gives you room for frame buffers or larger data structures without eating into the 336kB internal SRAM — useful when handling camera or display data alongside the WiFi stack. With a 2.4GHz radio supporting 802.11b/g/n at up to 150Mbps and a transmit power of 19.5dBm, this module covers the common IoT WiFi band with enough link margin for indoor deployments through walls and ceilings. ## Antenna options and receiver performance The module offers both a PCB trace antenna and an IPEX connector for an external antenna — the PCB trace saves a BOM line for close-range applications, while the IPEX port lets you attach a higher-gain antenna when the module sits inside a metal enclosure. Receiver sensitivity is rated at -97dBm, which means the module can decode a signal at that level — useful for maintaining a connection at the edge of the access point's range or through obstructions. ## Supply rails and temperature grade Operates from 3V to 3.6V, drawing 71mA to 75mA while receiving and 165mA to 310mA while transmitting — the transmit current varies with output power setting, so budget the 310mA peak for the 19.5dBm case.","metaTitle":"ESP32-S2-SOLO-U-N4R2 WiFi Module, 4MB Flash, 2MB PSRAM","metaDescription":"Espressif Systems ESP32-S2-SOLO-U-N4R2 WiFi module with 4MB Flash, 2MB PSRAM, 150Mbps data rate, -97dBm sensitivity. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF & Wireless ICs"],"specifications":{"Mfr":"Espressif Systems","Series":"ESP32","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"802.11b/g/n","Data Rate":"150Mbps","Frequency":"2.4GHz","Modulation":"-","Memory Size":"4MB Flash, 2MB PSRAM, 128kB ROM, 336kB SRAM","Sensitivity":"-97dBm","Antenna Type":"PCB Trace + IPEX","Mounting Type":"Surface Mount","Package / Case":"40-SMD Module","Power - Output":"19.5dBm","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Serial Interfaces":"ADC, GPIO, I²C, I²S, SPI, PWM, UART, USB","RF Family/Standard":"WiFi","Utilized IC / Part":"ESP32-S2R2","Current - Receiving":"71mA ~ 75mA","Operating Temperature":"-40°C~85°C(TA)","Current - Transmitting":"165mA ~ 310mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6bf4d9e814ff72b06259e949c58b1913.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/espressif/ESP32-S2-SOLO-U-N4R2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/espressif/ESP32-S2-SOLO-U-N4R2 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}}