2 layers69 × 112.2 mm
UltraPCB KiCAD
enliktjioe/three-workshops
HfK Bremen - Three Workshops course from Ralf Baecker
52 partsGPL-3.0
2 layers85 × 123.8 mm
ISCAS25 Blinker
juamonsan/ISCAS25_PCBPCB that also serves as a pen holder in conmemoration of ISCAS 2025
- Size
- 85 × 123.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 21
- Pads
- 115
- Tracks, vias
- 188, 30
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 4 May 2025
- Updated
- 6 Oct 2025
Overview
ISCAS25 Blinker is an open-source printed circuit board by juamonsan, from the juamonsan/ISCAS25_PCB repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 85 × 123.8 mm with 55 parts on 21 nets, routed with 188 tracks and 30 vias.
It is built around the NE555D, 156125RB73000 and BC846, with the BC857 among its other parts. Its parts include 9 resistors, 4 diodes, 2 capacitors, 2 transistors and 1 IC.
Main components
4
NE555D
SOIC-80℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / Counters
156125RB73000
SMD-4P,3.2x1.2mm120° 20mA 2V、3.3V 45mcd、70mcd 468nm、632nm 470nm、624nm Red, Blue Water Clear SMD-4P,3.2x1.2mm LED Indication - Discrete ROHSWürth ElektronikLight Emitting Diodes (LED)
BC846
SOT-23-65℃~+150℃ 1 NPN 100mA 110 15nA 250mW 400mV 65V 6V 770MHz NPN SOT-23 Bipolar (BJT) ROHSNexperiaBipolar (BJT)BC857
SOT-231 PNP 100MHz 100mA 15nA 200mW 45V 5V 650mV 800 PNP SOT-23 Bipolar (BJT) ROHSSTMicroelectronicsBipolar (BJT)
README
README.mdISCAS25_PCB
PCB that also serves as a pen holder in conmemoration of ISCAS 2025. Made with KiCAD, Inkscape and Gingerbread.
Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | Graphics | , , , , , , , , , , , , , , , +8 | |
| 8 | 470 | PCM_Resistor_SMD_AKL:R_0603_1608Metric | R1, R2, R4, R5, R6, R7, R8, R9 |
| 4 | DrillHole | , , , | |
| 4 | Red & Blue, 120° | Library:WL-SBRW_1205_reverse mount | D1, D2, D3, D4 |
| 4 | VAL** | mouse-bite:mouse-bite-3mm-6mm | mouse-bite-3mm-6mm, mouse-bite-3mm-6mm, mouse-bite-3mm-6mm, mouse-bite-3mm-6mm |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1k | PCM_Resistor_SMD_AKL:R_0603_1608Metric | R3 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | BC846 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BC857 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | NE555D | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | QR | LOGO | QR |
| 1 | SLW-1277545-3A-RA-N-D | Library:SW_SLW-1277545-3A-RA-N-D | S1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J1 |
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Questions
How big is the ISCAS25 Blinker PCB?
It measures 85 × 123.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ISCAS25 Blinker use?
55 parts, built around the NE555D, 156125RB73000, BC846 and BC857. 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 ISCAS25 Blinker KiCad files?
From the juamonsan/ISCAS25_PCB repository on GitHub, at the commit this page was made from: the board is ISCAS25_Blinker/ISCAS25_Blinker.kicad_pcb and its schematic ISCAS25_Blinker/ISCAS25_Blinker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ISCAS25 Blinker design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).