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4 layers89 × 51 mmPCBusiness card, the printed circuit board in 3D

A pocket sized multimedia macropad, memory storage device, sd card reader, nRF devkit and bluetooth transceiver all in the size of a business card

Size
89 × 51 mm
Copper layers
4
Thickness
1.6 mm
Parts
104
Nets
103
Pads
427
Tracks, vias
999, 184
Pours
6
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
4 Nov 2025
Updated
20 Feb 2026

Overview

PCBusiness card is an open-source printed circuit board by Aryan-G4, from the Aryan-G4/PCBusiness_card repository on GitHub. It is a 4-layer board of 89 × 51 mm with 104 parts on 103 nets, routed with 999 tracks and 184 vias.

It is built around the RP2040, NRF24L01 and LM2596S-3.3, with the BQ24090DGQR, TPS2116DRL and MMBT3904 among its other parts. Its parts include 32 resistors, 19 capacitors, 9 ICs, 8 diodes and 6 connectors. It belongs with the keyboards and input and radio and wireless boards and the RP2040 boards of this library.

Main components

7

README

README.md

PCBusiness card: small compact nRF52 based media storage, bluetooth trancieve and macropad in a business card form factor

Parts

104
QtyValueFootprintReferences
91uCapacitor_SMD:C_0603_1608MetricC2, C3, C4, C7, C8, C9, C10, C11, C32
710kResistor_SMD:R_0603_1608MetricR12, R13, R14, R15, R16, R21, R22
5400Resistor_SMD:R_0402_1005MetricR18, R30, R31, R32, R33
5LED_SmallLED_SMD:LED_0805_2012MetricD8, D9, D10, D11, D12
5MMBT3904Package_TO_SOT_SMD:SOT-23Q1, Q2, Q3, Q4, Q5
5TestPointTestPoint:TestPoint_Keystone_5010-5014_MultipurposeTP1, TP2, TP3, TP4, TP5
4MountingHole_PadMountingHole:MountingHole_2.2mm_M2_Pad_ViaH1, H2, H3, H4
4SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mmJP1, JP2, JP3, JP4
31.3kResistor_SMD:R_0402_1005MetricR27, R28, R29
31.5kResistor_SMD:R_0603_1608MetricR8, R11, R20
3100Resistor_SMD:R_0402_1005MetricR1, R3, R4
324AA025E-OTPackage_TO_SOT_SMD:SOT-23-6U2, U3, U4
21300Resistor_SMD:R_0402_1005MetricR19, R26
21pCapacitor_SMD:C_0402_1005MetricC17, C18
222Resistor_SMD:R_0603_1608MetricR7, R17
222pCapacitor_SMD:C_0402_1005MetricC12, C13
24.7kResistor_SMD:R_0603_1608MetricR5, R6
25.1KResistor_SMD:R_0603_1608MetricR23, R24
2Conn_01x04_PinConnector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_VerticalJ6, J7
2LED_SmallLED_THT:LED_D5.0mmD5, D6
11ScottoKeebs_MX:MX_PCB_1.00uSW3
110nCapacitor_SMD:C_0402_1005MetricC16
110uCapacitor_SMD:C_0603_1608MetricC6
112MHzCrystal:Crystal_SMD_5032-2Pin_5.0x3.2mmY1
11kResistor_SMD:R_0603_1608MetricR10
11nCapacitor_SMD:C_0402_1005MetricC15
12ScottoKeebs_MX:MX_PCB_1.00uSW4
12.7nInductor_SMD:L_0402_1005MetricL4
122kResistor_SMD:R_0603_1608MetricR25
12kResistor_SMD:R_0603_1608MetricR9
13.9nInductor_SMD:L_0402_1005MetricL1
133nFCapacitor_SMD:C_0402_1005MetricC14
133uInductor_SMD:L_0402_1005MetricL2
14.7pFCapacitor_SMD:C_0402_1005MetricC5
14.7uCapacitor_SMD:C_0603_1608MetricC1
18.2nInductor_SMD:L_0402_1005MetricL3
1BQ24090DGQPackage_SO:HVSSOP-10-1EP_3x3mm_P0.5mm_EP1.57x1.88mm_ThermalViasU5
1Conn_01x03Connector_JST:JST_ZH_B3B-ZR_1x03_P1.50mm_VerticalJ4
1Conn_ST_STDC14Connector:Tag-Connect_TC2070-IDC-FP_2x07_P1.27mm_VerticalJ5
1CrystalCrystal:Crystal_SMD_HC49-SDY2
1ESCScottoKeebs_MX:MX_PCB_1.00uSW1
1LM2596S-3.3Package_TO_SOT_SMD:TO-263-5_TabPin3U12
1MCP1700x-330xxTTPackage_TO_SOT_SMD:SOT-23U8
1Micro_SD_CardConnector_Card:microSD_HC_Molex_47219-2001J2
1NRF24L01Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mmU10
1RP2040Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mmU1
1SS34Diode_SMD:D_SMAD1
1SW_Nidec_CAS-120A1Button_Switch_SMD:Nidec_Copal_CAS-120ASW5
1SW_PushScottoKeebs_Miscellaneous:SW_DIP_SPSTx01_Slide_6.7x4.1mm_W6.73mm_P2.54mm_LowProfile_JPinSW98
1TPS2116DRLPackage_TO_SOT_SMD:SOT-583-8U9
1USB_C_Receptacle_USB2.0Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12J10
1~RF_Antenna:Texas_SWRA117D_2.4GHz_RightIFA1

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Questions

How big is the PCBusiness card PCB?

It measures 89 × 51 mm and has 4 copper layers, 1.6 mm thick.

What parts does the PCBusiness card use?

104 parts, built around the RP2040, NRF24L01, LM2596S-3.3 and BQ24090DGQR. 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 PCBusiness card KiCad files?

From the Aryan-G4/PCBusiness_card repository on GitHub, at the commit this page was made from: the board is Hardware/pcbusinesscard.kicad_pcb and its schematic Hardware/pcbusinesscard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the PCBusiness card design in my own project?

Its repository states no licence, so its author keeps all rights: ask Aryan-G4 before reusing the design.