4 layers40 × 65 mm
4 layers45 × 19 mm
CTRX
yusuf318/CTRXYeniay Control Telemetry Project
- Size
- 45 × 19 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 51
- Pads
- 181
- Tracks, vias
- 316, 111
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 1 Feb 2025
- Updated
- 29 Jun 2025
Overview
CTRX is an open-source printed circuit board by yusuf318, from the yusuf318/CTRX repository on GitHub. It is a 4-layer board of 45 × 19 mm with 37 parts on 51 nets, routed with 316 tracks and 111 vias.
It is built around the NRF21540-QDAA-R7, ME6211C33M5G-N and USBLC6-2SC6. Its parts include 19 capacitors, 4 resistors, 4 ICs, 4 inductors and 3 connectors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
3
NRF21540-QDAA-R7
QFN-16(4x4)-10dB -12dB -40℃~+105℃ -7dB 1.7V~3.6V 2.36GHz~2.5GHz 21.5dBm 22dBm QFN-16(4x4) RF Front End Circuits ROHSNordic SemiconRF Front End Circuits
ME6211C33M5G-N
SOT-23-5-40℃~+150℃ 1 120mV@(100mA) 3.3V 500mA 50uVrms 60uA 6V 70dB@(1kHz) Fixed Over Current Protection、Enable、Short Circuit Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMICRONEVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
README
README.mdCTRX
Yeniay Control Telemetry Project
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C13, C16, C17 |
| 3 | 100nF | Capacitor_SMD:C_0402_1005Metric | C4, C5, C9 |
| 3 | 1pF | Capacitor_SMD:C_0201_0603Metric | C2, C11, C18 |
| 3 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C3, C6, C19 |
| 2 | 1.5k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 8pF | Capacitor_SMD:C_0402_1005Metric | C12, C15 |
| 2 | LED | LED_SMD:LED_0805_2012Metric | D1, D2 |
| 1 | 0 | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 1.2pF | Capacitor_SMD:C_0201_0603Metric | C7 |
| 1 | 1.9nH | Inductor_SMD:L_0201_0603Metric | L1 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 2.2nH | Inductor_SMD:L_0201_0603Metric | L4 |
| 1 | 2pF | Capacitor_SMD:C_0201_0603Metric | C8 |
| 1 | 3.0nH | Inductor_SMD:L_0201_0603Metric | L2 |
| 1 | 32MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 4.7nH | Inductor_SMD:L_0201_0603Metric | L3 |
| 1 | 50R | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | CON-SMA-EDGE-S | SMA-EDGE:RFSOLUTIONS_CON-SMA-EDGE-S | J1 |
| 1 | Conn_02x05_Odd_Even | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J3 |
| 1 | ME6211C33M5 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | NRF21540-QDAA-R7 | nRF21540:QFN65P400X400X95-17N | U2 |
| 1 | USB-AM-S-X-X-TH | USB-AM-S-X-X-TH:SAMTEC_USB-AM-S-X-X-TH | J4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | nRF52820-QDxx | Package_DFN_QFN:QFN-40-1EP_5x5mm_P0.4mm_EP3.6x3.6mm | U1 |
Questions
How big is the CTRX PCB?
It measures 45 × 19 mm and has 4 copper layers, 1.6 mm thick.
What parts does the CTRX use?
37 parts, built around the NRF21540-QDAA-R7, ME6211C33M5G-N and USBLC6-2SC6. 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 CTRX KiCad files?
From the yusuf318/CTRX repository on GitHub, at the commit this page was made from: the board is CTRX/CTRX.kicad_pcb and its schematic CTRX/CTRX.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CTRX design in my own project?
Its repository states no licence, so its author keeps all rights: ask yusuf318 before reusing the design.
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