

Kapula
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
12EFR32FG14P233F256GM48-B
QFN-48-EP(7x7)-126.2dBm -40℃~+85℃ 1.8V~3.8V 169MHz~956MHz、2.4GHz~2.4835GHz 1Mbps 2.4GHz 20dBm 8.4mA 8.5mA 802.15.4 SPI、USART、UART、I2C、I2S Supports software reset、Supports RSSI function、Supports FEC function、CRC check function、Input sync word detection function、Manchester decoding function、Automatic response function、DMA function transceiver QFN-48-EP(7x7) RF Transceiver ICs ROHSSilicon LabsRF Transceiver ICsXA213-G4J
SOT-363-40℃~+85℃ 0.4dB 22dB 500MHz~3GHz 8V SOT-363 RF Switches ROHSXINLUDARF SwitchesFM8002A
SOP-8-40℃~+85℃ 0.2% 1-Channel 2.5V~5.5V 2Wx1@4Ω 4.4mA 63dB Automatic mute/no-noise switch、Enable/shutdown function、Analog voltage gain SOP-8 Audio Amplifiers ROHSFMAudio AmplifiersDW01+G
SOT-23-6Battery ManagementFortune SemiconTP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery ManagementXC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsBW21S7511A01TF
SMD-4P,2x1.2mm-40℃~+85℃ 1.2mm 1dB 20dB 2mm 45MHz~870MHz 75Ω:75Ω SMD-4P,2x1.2mm Balun ROHSSunlordBalunAO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsAO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsGZ1608D601TF
0603-55℃~+125℃ 1 200mA 450mΩ 600Ω@100MHz ±25% 0603 Ferrite Beads ROHSSunlordFerrite BeadsGZ2012D101TF
08051 100Ω@100MHz 150mΩ 800mA ±25% 0805 Ferrite Beads ROHSSunlordFerrite BeadsBSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
README
hardware_v2/pcb/README.mdCircuit 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:
- How to generate Gerber and Drill files in KiCad 7
- How to generate the BOM and Centroid file from KiCAD
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| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 0 | Resistor_SMD:R_0402_1005Metric | R15, R17, R20, R31, R32, R36, R37, R40, R42, R43, R71, R72, R73, R75 |
| 13 | 220n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C11, C23, C32, C35, C36, C38, C40, C42, C43, C52, C77 |
| 10 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5, R13, R35, R44, R45, R46, R47, R48, R78 |
| 9 | 1u | Capacitor_SMD:C_0603_1608Metric | C1, C4, C5, C13, C16, C37, C39, C46, C47 |
| 9 | 220p | Capacitor_SMD:C_0402_1005Metric | C14, C24, C25, C26, C27, C28, C29, C80, C81 |
| 8 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad | H2, H3, H4, H5, H6, H7, H8, H9 |
| 7 | 1M | Resistor_SMD:R_0402_1005Metric | R24, R38, R39, R41, R49, R74, R79 |
| 6 | 1n | Capacitor_SMD:C_0402_1005Metric | C22, C53, C72, C73, C78, C79 |
| 5 | 10u | Capacitor_SMD:C_0805_2012Metric | C6, C7, C31, C41, C45 |
| 5 | ~ | kapula:Pad_1mm | TP1, TP2, TP5, TP6, TP7 |
| 4 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C17, C21, C33, C34 |
| 4 | BW21S7511A01TF | kapula:BW21S | T1, T2, T3, T4 |
| 4 | U.FL | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | J3, J4, J5, J6 |
| 4 | ~ | kapula:ToolingHole | H10, H11, H12, H13 |
| 3 | 2k2 | Resistor_SMD:R_0402_1005Metric | R14, R21, R23 |
| 3 | 470 | Resistor_SMD:R_0402_1005Metric | R3, R76, R77 |
| 3 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4 |
| 2 | 15n | Inductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolder | L76, L77 |
| 2 | 1n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C74, C82 |
| 2 | 3n9 | Inductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolder | L74, L75 |
| 2 | 47n | Inductor_SMD:L_0402_1005Metric_Pad0.77x0.64mm_HandSolder | L71, L72 |
| 2 | 6p8 | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C83, C85 |
| 2 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1, Q5 |
| 2 | Conn_02x10_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J1, J2 |
| 2 | DNP | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C75, C76 |
| 2 | GZ1608D601TF | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB31, FB32 |
| 2 | GZ2012D101TF | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB11, FB12 |
| 2 | ~ | kapula:Pad_0402_1005Metric | TP3, TP4 |
| 1 | 0 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | F1 |
| 1 | 1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R33 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R34 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R12 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C12 |
| 1 | 10p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C84 |
| 1 | 15p | Capacitor_SMD:C_0402_1005Metric | C44 |
| 1 | 1k5 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 1k5 | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 220n | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C15 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 32768 Hz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 330k | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 330k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R11 |
| 1 | 47k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 1 | 4k7 | Resistor_SMD:R_0402_1005Metric | R22 |
| 1 | 4u7 | Inductor_SMD:L_1206_3216Metric | L31 |
| 1 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q6 |
| 1 | DNP | kapula:L_0402_to_0603_HandSolder | L73 |
| 1 | DNP | Capacitor_SMD:C_0402_1005Metric | C71 |
| 1 | DW01+G | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U2 |
| 1 | EFR32FG14P233F256GM48-B | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.3x5.3mm | U5 |
| 1 | FM8002A | Package_SO:SOP-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | SM4007PL | Diode_SMD:D_SOD-123F | D1 |
| 1 | TG2016SMN 38.4000M-MCGNNM3 | kapula:TG2016SMN | U6 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | XA213-G4J | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U7 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J7 |
| 1 | ~ | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J9 |
| 1 | ~ | kapula:NetTie-2_SMD_Pad0.3mm | NT71 |
| 1 | ~ | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J10 |
| 1 | ~ | kapula:NetTie-2_SMD_Pad0.2mm | NT72 |
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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.