{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-S3R2","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-S3R2","canonicalUrl":"https://icboms.com/espressif/ESP32-S3R2","factsUrl":"https://icboms.com/api/mcp/products/ESP32-S3R2","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32-S3 series TxRx + MCU, ESP32-S3R2, 2MB PSRAM, 30 GPIO, 21dBm output, 56-QFN.","salesMarkdown":"## What the 2 MB PSRAM buys you on the ESP32-S3R2 The ESP32-S3R2 packs 2 MB of PSRAM alongside the main flash — this is the memory headroom that matters when you are running a web server, camera stream buffer, or BLE mesh stack alongside the application code. Without it, the heap fragments and the OTA update partition shrinks. 30 GPIO lines on a 56-QFN package means most of the peripheral mix (I²C, I²S, SPI, UART, USB) can be wired without a port expander, but the 7x7 mm footprint forces tight fan-out on a two-layer board — the centre pad needs a thermal via array to pull heat from the 21 dBm PA. ## Wireless stack and sensitivity — what the numbers mean on the bench The -98.4 dBm receive sensitivity at the 2.4 GHz band sets the link budget floor — subtract the antenna gain and path loss, and you know whether the device hears a -80 dBm beacon at 50 metres indoors. The 21 dBm transmit power (about 125 mW) pushes the output past the typical +18 dBm ceiling of earlier ESP32s, giving a few extra dB of margin through walls or concrete. Dual-mode Bluetooth v5.0 alongside 802.11b/g/n at up to 150 Mbps means the same chip handles both the high-throughput data pipe and the low-energy beaconing — no second radio for BLE provisioning or firmware-over-the-air.","metaTitle":"ESP32-S3R2 Espressif Systems TxRx + MCU, 2MB PSRAM, WiFi/BLE","metaDescription":"ESP32-S3R2 TxRx + MCU with 2MB PSRAM, 30 GPIO, 21dBm output. Active production, sourced to order. WiFi 802.11b/g/n & Bluetooth v5.0. 56-QFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF & Wireless ICs"],"specifications":{"Mfr":"Espressif Systems","GPIO":"30","Type":"TxRx + MCU","Series":"ESP32-S3","Package":"Strip","Protocol":"802.11b/g/n, Bluetooth v5.0","Frequency":"2.412GHz ~ 2.484GHz","Modulation":"-","Memory Size":"2MB PSRAM","Sensitivity":"-98.4dBm","Mounting Type":"Surface Mount","Package / Case":"56-VFQFN Exposed Pad","Power - Output":"21dBm","Product Status":"Active","Data Rate (Max)":"150Mbps","lifecycle_stage":"eol_hot","Voltage - Supply":"3.3V","Serial Interfaces":"I²C, I²S, SPI, UART, USB","RF Family/Standard":"Bluetooth, WiFi","Base Product Number":"ESP32-S3","Current - Receiving":"-","Operating Temperature":"-40°C~85°C","Current - Transmitting":"-","Supplier Device Package":"56-QFN (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.2200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5dcbf950ad6ae8885e3e61b33ecc6271.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/espressif/ESP32-S3R2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/espressif/ESP32-S3R2 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}}