2 layers47 × 44 mm
Reflow example
hackclub/reflow
A YSWS for the northern hemisphere's summer and the aussie's winter. Run by @pmnlla, with love and loads of carrots.
56 parts2
2 layers47 × 44 mm
Reflow example
tobycm/r- Size
- 47 × 44 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 50
- Pads
- 177
- Tracks, vias
- 609, 141
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241228)
- Created
- 15 Sep 2025
- Updated
- 25 Apr 2026
Overview
Reflow example is an open-source printed circuit board by tobycm, from the tobycm/r repository on GitHub, published under the MIT licence. It is a 2-layer board of 47 × 44 mm with 57 parts on 50 nets, routed with 609 tracks and 141 vias.
It is built around the CD4511BNSR and NE555D. Its parts include 28 diodes, 18 resistors, 4 ICs and 1 capacitor.
Main components
2
CD4511BNSR
SO-16-208mil-55℃~+125℃ 25mA 300ns@15V,50pF 3V~18V 4/7 5uA 6.8mA Decoder Single Supply SO-16-208mil Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders
NE555D
SOIC-80℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / Counters
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 470R | Capacitor_SMD:C_1206_3216Metric | R4, R4, R4, R4, R4, R4, R4, R4, R4, R4, R4, R4, R4, R4 |
| 7 | LED | Diode_SMD:D_0402_1005Metric | D3, D4 X7, D5, D7, D9, D11, D13 |
| 7 | LED | Diode_SMD:D_0805_2012Metric | D2, D2, D2, D17, D19, D23, D25 |
| 7 | LED | Diode_SMD:D_0603_1608Metric | D3, D3, D3, D4, D6, D10, D12 |
| 7 | LED | Diode_SMD:D_1206_3216Metric | D1, D1, D1, D18, D20, D24, D26 |
| 2 | 5k1 | Capacitor_SMD:C_1206_3216Metric | R3, R3 |
| 2 | CD4511BNSR | KiCad:SOIC127P780X200-16N | U3, U3 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 1k | Capacitor_SMD:C_1206_3216Metric | R2 |
| 1 | 4518 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | 47k | Capacitor_SMD:C_1206_3216Metric | R1 |
| 1 | NE555D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4110 | JUSBC |
The 52 most common of 57 parts.
Questions
How big is the Reflow example PCB?
It measures 47 × 44 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Reflow example use?
57 parts, built around the CD4511BNSR and NE555D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Reflow example KiCad files?
From the tobycm/r repository on GitHub, at the commit this page was made from: the board is reflow-example.kicad_pcb and its schematic reflow-example.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Reflow example design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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