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4 layers67 × 38 mmBiosemicard, the printed circuit board in 3D

Biosemicard

bcbergmanuu/biosemicard

Expansion card for biosemi

Open in PCBKitView on GitHub.kicad_pcb
Size
67 × 38 mm
Copper layers
4
Thickness
1.6 mm
Parts
144
Nets
174
Pads
518
Tracks, vias
1,042, 234
Pours
2
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
26 May 2025
Updated
2 Jun 2025

Overview

Biosemicard is an open-source printed circuit board by bcbergmanuu, from the bcbergmanuu/biosemicard repository on GitHub. It is a 4-layer board of 67 × 38 mm with 144 parts on 174 nets, routed with 1,042 tracks and 234 vias.

It is built around the OPA2188AIDR-MS, ADS1254E and 74HC151D. Its parts include 65 resistors, 51 capacitors, 17 ICs and 1 connector.

Main components

3

README

readme.md

biosemi expansion card

alt text alt text alt text alt text v2: alt text alt text v2: alt text alt text

Opamp OPA2188: Datasheet. ADC: Datasheet.

Parts

144
QtyValueFootprintReferences
3210uCapacitor_SMD:C_0603_1608MetricC1, C10, C11, C12, C13, C14, C16, C17, C18, C19, C21, C22, C23, C24, C26, C27 +16
241kResistor_SMD:R_0402_1005MetricR3, R10, R14, R15, R17, R21, R22, R24, R28, R29, R31, R35, R36, R38, R42, R43 +8
10FerriteBeadInductor_SMD:L_0402_1005MetricFB1, FB2, FB3, FB4, FB5, FB6, FB7, FB8, FB9, FB10
8100nCapacitor_SMD:C_0402_1005MetricC44, C45, C46, C47, C48, C49, C50, C51
81500Resistor_SMD:R_0402_1005MetricR58, R59, R60, R61, R62, R63, R64, R65
820500Resistor_SMD:R_0402_1005MetricR4, R11, R18, R25, R32, R39, R46, R53
820nCapacitor_SMD:C_0402_1005MetricC2, C8, C15, C20, C25, C30, C35, C40
823700Resistor_SMD:R_0402_1005MetricR6, R13, R20, R27, R34, R41, R48, R55
83010Resistor_SMD:R_0402_1005MetricR5, R12, R19, R26, R33, R40, R47, R54
83300Resistor_SMD:R_0402_1005MetricR2, R9, R16, R23, R30, R37, R44, R51
8ADS1254EPackage_SO:QSOP-20_3.9x8.7mm_P0.635mmU3, U5, U7, U9, U11, U13, U15, U17
8OPA2188AIDRPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU1, U4, U6, U8, U10, U12, U14, U16
21uCapacitor_SMD:C_0603_1608MetricC3, C43
12.2uCapacitor_SMD:C_0603_1608MetricC42
124.9Resistor_SMD:R_0402_1005MetricR1
174HC151DPackage_SO:SOIC-16_3.9x9.9mm_P1.27mmU2
1Conn_01x26_PinConnector_PinHeader_2.54mm:PinHeader_1x26_P2.54mm_VerticalJ1

Questions

How big is the Biosemicard PCB?

It measures 67 × 38 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Biosemicard use?

144 parts, built around the OPA2188AIDR-MS, ADS1254E and 74HC151D. 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 Biosemicard KiCad files?

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

Can I use the Biosemicard design in my own project?

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

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