{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-S2-SOLO-N4R2","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-S2-SOLO-N4R2","canonicalUrl":"https://icboms.com/espressif/ESP32-S2-SOLO-N4R2","factsUrl":"https://icboms.com/api/mcp/products/ESP32-S2-SOLO-N4R2","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32 series, WiFi module, 2.4GHz, 150Mbps, 4MB Flash + 2MB PSRAM, 19.5dBm output, -97dBm sensitivity, 40-SMD module, surface mount.","salesMarkdown":"The ESP32-S2-SOLO-N4R2 is a single-core WiFi module from the ESP32 series, built around the ESP32-S2R2 IC. It integrates a 2.4 GHz 802.11b/g/n radio with a data rate of 150 Mbps, a PCB trace antenna plus an IPEX connector for an external antenna, and a 40-SMD module package for surface-mount reflow assembly. With 4 MB flash and 2 MB PSRAM on-chip, plus 128 kB ROM and 336 kB SRAM, this module handles larger application images and data buffers than the base ESP32-S2 — the PSRAM is useful for frame buffers in camera or display applications, or for TLS session data in secure IoT endpoints. The serial interface set includes ADC, GPIO, I²C, I²S, SPI, PWM, UART, and USB — enough to connect sensors, displays, audio codecs, and external flash without a separate host MCU. The USB peripheral enables direct programming and CDC-ACM virtual COM port for debug or data streaming. ## RF link budget and power supply planning Transmit power is 19.5 dBm, and receive sensitivity hits -97 dBm — a link budget of roughly 116 dB at the lowest data rate, which in open air translates to several hundred metres of range. The 71–75 mA receive current and 165–310 mA transmit current mean the 3.0–3.6 V supply rail must deliver peaks near 1.1 W during a TX burst; a local LDO or DC-DC with at least 400 mA headroom keeps the rail from drooping. The module is not AEC-Q100 graded, so it is not qualified for under-hood or powertrain applications.","metaTitle":"ESP32-S2-SOLO-N4R2 WiFi Module, 2.4GHz, 150Mbps, 4MB Flash","metaDescription":"Espressif Systems ESP32-S2-SOLO-N4R2 WiFi module, 2.4GHz 802.11b/g/n, 150Mbps, 4MB Flash + 2MB PSRAM, -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-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-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}}