{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ESP32-C3-MINI-1-H4","brand":"Espressif Systems","brandSlug":"espressif","productSlug":"ESP32-C3-MINI-1-H4","canonicalUrl":"https://icboms.com/espressif/ESP32-C3-MINI-1-H4","factsUrl":"https://icboms.com/api/mcp/products/ESP32-C3-MINI-1-H4","rawCanonicalId":null},"summary":{"shortDescription":"Espressif Systems ESP32-C3 series, ESP32-C3-MINI-1-H4, 53-SMD module, WiFi 802.11b/g/n + Bluetooth v5.0, 150 Mbps PHY, PCB trace antenna, 4 MB flash, 384 kB ROM, 408 kB SRAM, 20.5 dBm TX power, -40°C to 105°C","salesMarkdown":"## Active production – no end-of-life notice The ESP32-C3-MINI-1-H4: The ESP32-C3 series remains in volume production at Espressif, and the -H4 variant (with 4 MB embedded flash) is the current standard build. The module is listed under the ESP32-C3 series, which shares the same RISC-V single-core MCU architecture and pinout across the MINI-1 family. If a future BOM revision requires a different flash density, the -H1 (2 MB flash) variant is the same package and footprint. ## Memory budget and firmware headroom With 4 MB on-chip flash, 384 kB ROM, and 408 kB SRAM, the ESP32-C3-MINI-1-H4 can run a full WiFi stack and BLE 5.0 host simultaneously while leaving enough SRAM for a real-time application heap. The 408 kB SRAM is split between data and cache; typical firmware builds using the ESP-IDF v5.x SDK consume ~180 kB for the protocol stacks, leaving ~220 kB for application buffers and sensor fusion. The 20.5 dBm transmit power at the module antenna port is the conducted output; the PCB trace antenna adds ~2 dB of mismatch and board-dependent loss. For designs that need a regulated link budget exceeding +18 dBm EIRP, the module's RF pin can be routed to an external U.FL connector by selecting the -U variant — but the -H4 variant ships with the PCB antenna only. The supply voltage range is 3.0 V to 3.6 V; the internal LDOs produce 3.3 V and 1.8 V rails. A 3.3 V rail with 500 mA peak capability is sufficient for the module plus a few external sensors — the module itself draws 82–84 mA in receive and 290–350 mA in transmit at 20.5 dBm. ## Sourcing posture and ordering For volume production, the TR option is standard; CT is suited for prototyping or small-run builds.","metaTitle":"ESP32-C3-MINI-1-H4 WiFi/BLE Module – Active, -40°C to 105°C","metaDescription":"ESP32-C3-MINI-1-H4: 2.4 GHz WiFi 4 + BLE 5.0 module, 4 MB flash, 408 KB SRAM, 20.5 dBm TX power, industrial temp. Active production – sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF & Wireless ICs"],"specifications":{"Mfr":"Espressif Systems","Series":"ESP32-C3","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"802.11b/g/n, Bluetooth v5.0","Data Rate":"150Mbps","Frequency":"2.412GHz ~ 2.484GHz","Modulation":"-","Memory Size":"4MB Flash, 384kB ROM, 408kB SRAM","Sensitivity":"-104dBm","Antenna Type":"PCB Trace","Mounting Type":"Surface Mount","Package / Case":"53-SMD Module","Power - Output":"20.5dBm","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V","Serial Interfaces":"ADC, GPIO, I²C, I²S, JTAG, PWM, SPI, UART, USB","RF Family/Standard":"Bluetooth, WiFi","Utilized IC / Part":"ESP32-C3FH4","Current - Receiving":"82mA ~ 84mA","Operating Temperature":"-40°C~105°C(TA)","Current - Transmitting":"290mA ~ 350mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c12b9af2c3e3ac5c34e94ba852fe2000.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ESP32-C3-MINI-1-H4/alternatives.json"},"ai":{"faq":[{"question":"Is ESP32-C3-MINI-1-H4 compatible with my existing ESP32-C3 design?","answer":"The -H4 variant uses the same ESP32-C3FH4 IC and same 53-pin module footprint as the other MINI-1 variants. The only difference is the embedded flash size — 4 MB here versus 2 MB on the -H1. If your firmware image fits within 2 MB, the -H1 is a drop-in alternative; if you need the full 4 MB, the -H4 is the correct choice."},{"question":"What is the closest pin-compatible alternative to ESP32-C3-MINI-1-H4?","answer":"Within the same ESP32-C3 MINI-1 family, the ESP32-C3-MINI-1-H1 uses the same 53-SMD package and pinout but has 2 MB flash instead of 4 MB. Both are active and share the same RISC-V MCU core. If you need more flash (8 MB), the -H2 variant exists but is less widely stocked — confirm availability before a BOM swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/espressif/ESP32-C3-MINI-1-H4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/espressif/ESP32-C3-MINI-1-H4 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}}