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2 layers190.5 × 121.9 mmBMW i3-adapter, the printed circuit board in 3D

Eagle schematics of inverter main board, sensor boards and gate drivers

Size
190.5 × 121.9 mm
Copper layers
2
Thickness
1.6 mm
Parts
35
Nets
69
Pads
221
Tracks, vias
421, 45
Pours
2
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
21 Oct 2018
Updated
17 Oct 2026

Overview

BMW i3-adapter is an open-source printed circuit board by jsphuebner, from the jsphuebner/inverter-hardware repository on GitHub. It is a 2-layer board of 190.5 × 121.9 mm with 35 parts on 69 nets, routed with 421 tracks and 45 vias.

It is built around the 74AHC1G125GW. Its parts include 12 capacitors, 5 ICs, 5 connectors, 4 resistors and 2 transistors. It belongs with the interfaces and adapters boards of this library.

Main components

1

README

README.md

inverter-hardware

Eagle schematics of inverter main board, sensor boards and gate drivers

License

Attribution-ShareAlike 4.0 International https://creativecommons.org/licenses/by-sa/4.0/legalcode

You musn't change the copyright info (J. Huebner and openinverter.org) on the silkscreen in size location or content.

Parts

35
QtyValueFootprintReferences
84.7uFCapacitor_SMD:C_1206_3216MetricC1, C3, C7, C8, C9, C10, C11, C12
374AHC1G125Package_TO_SOT_SMD:SOT-353_SC-70-5U3, U4, U5
21uFCapacitor_SMD:C_0603_1608MetricC2, C4
2Conn_01x20Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_VerticalJ1, J3
2Q_NMOS_GDSPackage_TO_SOT_SMD:TO-263-3_TabPin2Q1, Q2
1mainboard-mini:OI_LOGOU$2
1270kResistor_SMD:R_0603_1608MetricR3
12k2Resistor_SMD:R_0603_1608MetricR2
13.3kResistor_SMD:R_0603_1608MetricR4
133nFCapacitor_SMD:C_0603_1608MetricC6
133uHInductor_SMD:L_10.4x10.4_H4.8L1
147nFCapacitor_SMD:C_0603_1608MetricC5
156kResistor_SMD:R_0603_1608MetricR1
1776228-1Harwin:TE_776228-1J5
1AP1117-33Package_TO_SOT_SMD:SOT-223-3_TabPin2U1
1Conn_02x05_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_HorizontalJ2
1Conn_02x20_Top_BottomHarwin:M55-7104042RJ4
1D_SchottkyDiode_SMD:D_SMBD1
1TPS61175PWPRHarwin:IC_TPS27S100BPWPRU2

The 31 most common of 35 parts.

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Questions

How big is the BMW i3-adapter PCB?

It measures 190.5 × 121.9 mm and has 2 copper layers, 1.6 mm thick.

What parts does the BMW i3-adapter use?

35 parts, built around the 74AHC1G125GW. 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 BMW i3-adapter KiCad files?

From the jsphuebner/inverter-hardware repository on GitHub, at the commit this page was made from: the board is BMW-i3-adapter/BMW-i3-adapter.kicad_pcb and its schematic BMW-i3-adapter/BMW-i3-adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the BMW i3-adapter design in my own project?

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