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2 layers15.2 × 20.3 mmSTP220 Polulu, the printed circuit board in 3D

this is the one and only TCP

Size
15.2 × 20.3 mm
Copper layers
2
Thickness
1.6 mm
Parts
20
Nets
24
Pads
71
Tracks, vias
135, 42
Pours
3
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
5 Jan 2023
Updated
13 Feb 2025

Overview

STP220 Polulu is an open-source printed circuit board by theBrutzler, from the theBrutzler/TinyCorePrinter repository on GitHub. It is a 2-layer board of 15.2 × 20.3 mm with 20 parts on 24 nets, routed with 135 tracks and 42 vias.

It is built around the STSPIN220, BC817 and BC817W. Its parts include 10 resistors, 3 connectors, 2 capacitors, 2 transistors and 1 IC.

Main components

3

README

README.md

Image 1

Parts

20
QtyValueFootprintReferences
510KResistor_SMD:R_0603_1608MetricR1, R5, R8, R9, R10
31KResistor_SMD:R_0603_1608MetricR2, R3, R4
2200mResistor_SMD:R_0603_1608MetricR6, R7
2Conn_01x08_MaleConnector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalJ1, J2
110KPotentiometer_SMD:Potentiometer_Bourns_TC33X_VerticalRV1
122nCapacitor_SMD:C_0603_1608MetricC1
14,7µCapacitor_SMD:C_0603_1608MetricC2
1BC817Package_TO_SOT_SMD:SOT-23Q1
1BC817WPackage_TO_SOT_SMD:SOT-323_SC-70Q2
1Conn_01x01_FemaleTestPoint:TestPoint_Pad_2.0x2.0mmJ3
1LOGOtheBrutzler:thebrutzler_10mm_modG***
1STSPIN220Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.8x1.8mmU1

Questions

How big is the STP220 Polulu PCB?

It measures 15.2 × 20.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the STP220 Polulu use?

20 parts, built around the STSPIN220, BC817 and BC817W. 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 STP220 Polulu KiCad files?

From the theBrutzler/TinyCorePrinter repository on GitHub, at the commit this page was made from: the board is DEV_BOARDS/STP220_Polulu/STP220_Polulu.kicad_pcb and its schematic DEV_BOARDS/STP220_Polulu/STP220_Polulu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the STP220 Polulu design in my own project?

Its repository states no licence, so its author keeps all rights: ask theBrutzler before reusing the design.

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