{"product_id":"5x7cm-double-sided-prototype-pcb-board-esp12e-esp12f-esp32-arduino","title":"5×7cm Double-Sided Prototype PCB Board — ESP-12E\/F, ESP32, Arduino Compatible","description":"\u003ch2\u003e5×7cm Double-Sided Prototype PCB Board — ESP-12E\/F, ESP32, Arduino Compatible\u003c\/h2\u003e\u003cp\u003eThis 5×7cm double-sided prototype PCB features copper pads on both top and bottom layers with plated through-holes, enabling more complex circuit routing than single-sided perfboard. With 2.54mm (0.1\") hole pitch and 1.6mm FR4 substrate, it is compatible with ESP-12E\/F module footprints, ESP32 module breakouts, Arduino Nano\/Pro Mini, and standard DIP through-hole components. Ideal for building permanent ESP8266\/ESP32 breakout boards and custom IoT sensor nodes.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Size\u003c\/td\u003e\n\u003ctd\u003e5 × 7cm (50 × 70mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Pitch\u003c\/td\u003e\n\u003ctd\u003e2.54mm (0.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter\u003c\/td\u003e\n\u003ctd\u003e1.0mm (plated through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper Layers\u003c\/td\u003e\n\u003ctd\u003eDouble-sided (top + bottom, plated through-holes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eFR4 fiberglass, 1.6mm thickness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper Finish\u003c\/td\u003e\n\u003ctd\u003eTin-plated (HASL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Modules\u003c\/td\u003e\n\u003ctd\u003eESP-12E, ESP-12F, ESP32-WROOM, Arduino Nano\/Pro Mini\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eSingle-Sided vs Double-Sided — Why Double-Sided?\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSingle-Sided\u003c\/th\u003e\n\u003cth\u003eDouble-Sided (this listing)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCopper layers\u003c\/td\u003e\n\u003ctd\u003e1 (bottom only)\u003c\/td\u003e\n\u003ctd\u003e2 (top + bottom, plated vias)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRouting\u003c\/td\u003e\n\u003ctd\u003eJumper wires for crossings\u003c\/td\u003e\n\u003ctd\u003eTop\/bottom traces, no jumpers needed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eESP-12E\/ESP32 breakout\u003c\/td\u003e\n\u003ctd\u003eDifficult\u003c\/td\u003e\n\u003ctd\u003eIdeal — route power and signals on separate layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSimple circuits\u003c\/td\u003e\n\u003ctd\u003eESP8266\/ESP32 breakout, Arduino shields, complex circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose This Double-Sided PCB?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlated through-holes\u003c\/strong\u003e — electrical connection between top and bottom copper layers at every hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP-12E\/F compatible layout\u003c\/strong\u003e — 2mm pitch castellated pads of ESP-12 modules align with 2.54mm grid for breakout routing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFR4 1.6mm substrate\u003c\/strong\u003e — standard PCB thickness, fits most enclosures and connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-sided routing\u003c\/strong\u003e — route power on bottom, signals on top for cleaner layouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.54mm pitch\u003c\/strong\u003e — compatible with all standard DIP ICs, headers, and connectors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP-12E\/F breakout board\u003c\/strong\u003e: Solder ESP-12E module and add 3.3V regulator, USB-UART, and GPIO headers for a custom NodeMCU-style board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESP32 custom board\u003c\/strong\u003e: ESP32-WROOM-32 module breakout with power supply and sensor connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino Nano shield\u003c\/strong\u003e: Custom sensor and relay shield for Arduino Nano (fits Nano header spacing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT sensor node\u003c\/strong\u003e: ESP8266 + DHT22 + BME280 permanent sensor board for Home Assistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay control board\u003c\/strong\u003e: ESP32 + optocoupler + relay circuit for smart home switching\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I solder ESP-12E directly onto this board?\u003c\/strong\u003e\u003cbr\u003eA: ESP-12E has 2mm pitch castellated pads, while this board has 2.54mm pitch holes. You cannot plug ESP-12E directly into the holes, but you can solder it flat onto the board surface using the castellated pads, or use a 2mm-to-2.54mm adapter. Many builders solder ESP-12E onto the board edge and route traces to 2.54mm headers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are the through-holes plated (connected top to bottom)?\u003c\/strong\u003e\u003cbr\u003eA: Yes — this is a key advantage over single-sided boards. All holes are plated through, meaning a component lead soldered on the bottom also connects to the top copper pad. This allows top-layer traces to connect to bottom-layer traces through any hole.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the maximum trace current for this prototype PCB?\u003c\/strong\u003e\u003cbr\u003eA: The copper thickness is typically 35μm (1oz). A 1mm wide trace can carry approximately 1A continuously. For power traces (5V, 3.3V), use multiple parallel traces or solder additional wire on top of the trace for higher current capacity.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1× 5×7cm Double-Sided Prototype PCB Board (FR4, plated through-holes)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991462334699,"sku":"\u003cnone\u003e","price":9.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/5x7cm-double-sided-prototype-pcb-board-breadboard-protoshield-arduino-esp8266-esp32.webp?v=1761794091","url":"https:\/\/keszoox.com\/products\/5x7cm-double-sided-prototype-pcb-board-esp12e-esp12f-esp32-arduino","provider":"Keszoox","version":"1.0","type":"link"}