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4 layers50 × 59 mmKapula, the printed circuit board in 3D

EFR32-based handheld transceiver

Size
50 × 59 mm
Copper layers
4
Thickness
1.61 mm
Parts
166
Nets
120
Pads
466
Tracks, vias
1,054, 461
Pours
51
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
26 Nov 2017
Updated
14 Aug 2024

Overview

Kapula is an open-source printed circuit board by tejeez, from the tejeez/geckokapula repository on GitHub. It is a 4-layer board of 50 × 59 mm with 166 parts on 120 nets, routed with 1,054 tracks and 461 vias.

It is built around the EFR32FG14P233F256GM48-B, XA213-G4J and FM8002A, with the DW01+G, TP4054 and XC6206P332MR among its other parts. Its parts include 57 capacitors, 47 resistors, 9 connectors, 8 inductors and 7 ICs. It belongs with the Silicon Labs (EFR32, EFM) boards of this library.

Main components

12

README

hardware_v2/pcb/README.md

Circuit and PCB design for hardware version 2.2

The PCB is designed so that all SMD components can be placed by JLCPCB.

Tutorials for ordering:

Make sure each component gets placed in the right orientation. Pin 1 of each IC is marked with a dot on the silkscreen.

Settings for JLCPCB Standard PCB/PCBA

  • PCB Qty: 30
  • Surface Finish: LeadFree HASL
  • Specify Layer Sequence: Yes, F / In1 / In2 / B
  • Impedance Control: Yes, JLC046161H-7628 (Prepreg thickness 0.2104 mm)
  • Remove Order Number: Specify a location
  • PCB Assembly: Yes
  • Tooling holes: Added by Customer

Component placement corrections

  • U.FLs: Rotate right, move 4 steps
  • U1: Rotate (forgot how much)
  • U4: Rotate right
  • U2, U3, U7, Q1, Q2, Q3, Q4, Q5, Q6: Rotate 180°

Parts

166
QtyValueFootprintReferences
140Resistor_SMD:R_0402_1005MetricR15, R17, R20, R31, R32, R36, R37, R40, R42, R43, R71, R72, R73, R75
13220nCapacitor_SMD:C_0402_1005MetricC2, C3, C11, C23, C32, C35, C36, C38, C40, C42, C43, C52, C77
100Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR1, R5, R13, R35, R44, R45, R46, R47, R48, R78
91uCapacitor_SMD:C_0603_1608MetricC1, C4, C5, C13, C16, C37, C39, C46, C47
9220pCapacitor_SMD:C_0402_1005MetricC14, C24, C25, C26, C27, C28, C29, C80, C81
8M3MountingHole:MountingHole_3.2mm_M3_PadH2, H3, H4, H5, H6, H7, H8, H9
71MResistor_SMD:R_0402_1005MetricR24, R38, R39, R41, R49, R74, R79
61nCapacitor_SMD:C_0402_1005MetricC22, C53, C72, C73, C78, C79
510uCapacitor_SMD:C_0805_2012MetricC6, C7, C31, C41, C45
5~kapula:Pad_1mmTP1, TP2, TP5, TP6, TP7
44u7Capacitor_SMD:C_0805_2012MetricC17, C21, C33, C34
4BW21S7511A01TFkapula:BW21ST1, T2, T3, T4
4U.FLConnector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_VerticalJ3, J4, J5, J6
4~kapula:ToolingHoleH10, H11, H12, H13
32k2Resistor_SMD:R_0402_1005MetricR14, R21, R23
3470Resistor_SMD:R_0402_1005MetricR3, R76, R77
3AO3400APackage_TO_SOT_SMD:SOT-23Q2, Q3, Q4
215nInductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolderL76, L77
21nCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC74, C82
23n9Inductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolderL74, L75
247nInductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolderL71, L72
26p8Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC83, C85
2AO3401APackage_TO_SOT_SMD:SOT-23Q1, Q5
2Conn_02x10_Odd_EvenConnector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_VerticalJ1, J2
2DNPCapacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolderC75, C76
2GZ1608D601TFInductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolderFB31, FB32
2GZ2012D101TFInductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolderFB11, FB12
2~kapula:Pad_0402_1005MetricTP3, TP4
10Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolderF1
11Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR33
1100Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR34
1100kResistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolderR12
110nCapacitor_SMD:C_0402_1005MetricC12
110pCapacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolderC84
115pCapacitor_SMD:C_0402_1005MetricC44
11k5Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR2
11k5Resistor_SMD:R_0603_1608MetricR4
1220nCapacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolderC15
122kResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR18
132768 HzCrystal:Crystal_SMD_3215-2Pin_3.2x1.5mmY1
1330kResistor_SMD:R_0402_1005MetricR16
1330kResistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolderR11
147kResistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolderR19
14k7Resistor_SMD:R_0402_1005MetricR22
14u7Inductor_SMD:L_1206_3216MetricL31
1BSS84Package_TO_SOT_SMD:SOT-23Q6
1DNPkapula:L_0402_to_0603_HandSolderL73
1DNPCapacitor_SMD:C_0402_1005MetricC71
1DW01+GPackage_TO_SOT_SMD:SOT-23-6_HandsolderingU2
1EFR32FG14P233F256GM48-BPackage_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.3x5.3mmU5
1FM8002APackage_SO:SOP-8_3.9x4.9mm_P1.27mmU4
1SM4007PLDiode_SMD:D_SOD-123FD1
1TG2016SMN 38.4000M-MCGNNM3kapula:TG2016SMNU6
1TP4054Package_TO_SOT_SMD:SOT-23-5_HandSolderingU1
1XA213-G4JPackage_TO_SOT_SMD:SOT-363_SC-70-6U7
1XC6206P332MRPackage_TO_SOT_SMD:SOT-23U3
1~Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_VerticalJ7
1~Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_VerticalJ9
1~kapula:NetTie-2_SMD_Pad0.3mmNT71
1~Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ10
1~kapula:NetTie-2_SMD_Pad0.2mmNT72

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Questions

How big is the Kapula PCB?

It measures 50 × 59 mm and has 4 copper layers, 1.61 mm thick.

What parts does the Kapula use?

166 parts, built around the EFR32FG14P233F256GM48-B, XA213-G4J, FM8002A and DW01+G. 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 Kapula KiCad files?

From the tejeez/geckokapula repository on GitHub, at the commit this page was made from: the board is hardware_v2/pcb/kapula.kicad_pcb and its schematic hardware_v2/connections/connections.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Kapula design in my own project?

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