5 open source boards using the Si3402-B-GM(QFN-20_5x5mm)
Real designs built with the Si3402-B-GM(QFN-20_5x5mm), from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
ESP32ESP32-PoE Rev E
OLIMEX
28 × 75 mm117 parts2LApache-2.0407
ESP32ESP32-PoE Rev D
28 × 75 mm116 parts2LApache-2.0407
ESP32ESP-PoE-ISO
28 × 93 mm117 parts4LNo license142
ESP32ESP32-PoE Rev C
28 × 75 mm110 parts2LApache-2.0407
ESP32ESP-PoE-ISO
28 × 93 mm116 parts4LNo license142
The Si3402-B-GM(QFN-20_5x5mm) in open source designs
The gallery holds 5 open source boards using the Si3402-B-GM(QFN-20_5x5mm) from 2 GitHub repositories; a typical one measures about 28 × 75 mm and carries around 116 components.
60% are two-layer designs, the rest use four layers or more, and 60% carry an open source license.
The most starred is ESP32-PoE Rev E by OLIMEX.
Parts used alongside the Si3402-B-GM(QFN-20_5x5mm)
Microcontrollers on boards using the Si3402-B-GM(QFN-20_5x5mm)
What boards using the Si3402-B-GM(QFN-20_5x5mm) are built for
Si3402-B-GM(QFN-20_5x5mm): common questions
Where can I find a Si3402-B-GM(QFN-20_5x5mm) reference design?
Each of the 5 boards on this page is a real design using the Si3402-B-GM(QFN-20_5x5mm). Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the Si3402-B-GM(QFN-20_5x5mm)?
The BL4054B-42TPRN(SOT23-5), CH340T(SSOP20W), ESP-WROOM-32, LAN8710A-EZC(QFN32) and SY8089AAAC(SOT23-5) appear in the most repositories here.
Which microcontrollers do boards using the Si3402-B-GM(QFN-20_5x5mm) use?
Most are built on ESP32 (5).
How big is a typical board using the Si3402-B-GM(QFN-20_5x5mm)?
The median is 28 × 75 mm, and 60% are two-layer designs.
What is the most popular open source board using the Si3402-B-GM(QFN-20_5x5mm)?
By GitHub stars, ESP32-PoE Rev E by OLIMEX, with 407 stars.
Can I simulate one of these boards using the Si3402-B-GM(QFN-20_5x5mm) before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.