2 layers133.4 × 50.8 mm
2 layers27.5 × 0.5 mm
- Size
- 27.5 × 0.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 32
- Pads
- 144
- Tracks, vias
- 437, 23
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 8 Jul 2017
- Updated
- 8 Jul 2017
Overview
Ctree is an open-source printed circuit board by csatti, from the csatti/kicad-ChristmasTree repository on GitHub. It is a 2-layer board of 27.5 × 0.5 mm with 52 parts on 32 nets, routed with 437 tracks and 23 vias.
It is built around the ATMEGA328P-AU, MCP1624-I/MC and IRLML6402, with the BC817, CL31A106KOHNNNE and NOJA226M006RWJ among its other parts. Its parts include 24 diodes, 10 resistors, 4 capacitors, 4 transistors and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
6
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MCP1624-I/MC
DFN-8-EP(2x3)-40℃~+125℃@(TJ) 1 350mV~5.5V 500kHz Boost Boost Built-in Yes DFN-8-EP(2x3) DC-DC Converters ROHSMicrochip TechnologyDC-DC Converters
IRLML6402
SOT-23-55℃~+150℃ 1 P-Channel 1.3W 110pF 12nC 145pF 20V 3.7A 400mV 633pF 65mΩ@4.5V P-Channel SOT-23 MOSFETs ROHSGuangdong HottechMOSFETsBC817
SOT-231 NPN 100nA 150MHz 300mW 40 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
CL31A106KOHNNNE
120610uF 16V X5R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
NOJA226M006RWJ
CASE-A-3216-18(mm)Niobium Oxide CapacitorsKyocera AVX
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | Blue | Attila:LED_0805_milling | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +8 |
| 4 | 100k | Attila:R_0805_milling | R3, R5, R7, R9 |
| 3 | IRLML6402 | Attila:SOT-23_milling | Q1, Q3, Q4 |
| 2 | 39 | Attila:R_0805_milling | R6, R8 |
| 2 | MountingHole | Mounting_Holes:MountingHole_3-5mm | H1, H2 |
| 1 | 10k | Attila:R_0805_milling | R10 |
| 1 | 1206_Unk4.7u25V | Attila:C_1206_milling | C1 |
| 1 | 27 | Attila:R_0805_milling | R1 |
| 1 | 300k | Attila:R_0805_milling | R4 |
| 1 | 4.7uH | Attila:l_choke_6x5.4_H4.5_CD54 | L1 |
| 1 | 510k | Attila:R_0805_milling | R2 |
| 1 | ATMEGA328P-A | Attila:TQFP-32_7x7mm_Pitch0.8mm__milling | IC1 |
| 1 | BC817 | Attila:SOT-23_milling | Q2 |
| 1 | Battery | Attila:CR2032H_milling | BT1 |
| 1 | CL10B104KB8NNNC | Attila:C_0603_milling | C4 |
| 1 | CL31A106KOHNNNE | Attila:C_1206_milling | C2 |
| 1 | CONN_02X03_PROG | Attila:ICSP_6Pin_IDC | P1 |
| 1 | Logo | Attila:Logo | H3 |
| 1 | MCP1624 | Attila:SOT23-6L_milling | U1 |
| 1 | NOJA226M006 | Attila:TantalC_SizeA_EIA-3216_milling | C3 |
| 1 | R_Jumper | Attila:RJ_0805_milling | RJ1 |
| 1 | SMD_5.2x5.2 | Attila:pbutton_5.2x5.2_H2 | SW1 |
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Questions
How big is the Ctree PCB?
It measures 27.5 × 0.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ctree use?
52 parts, built around the ATMEGA328P-AU, MCP1624-I/MC, IRLML6402 and BC817. 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 Ctree KiCad files?
From the csatti/kicad-ChristmasTree repository on GitHub, at the commit this page was made from: the board is ctree.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ctree design in my own project?
Its repository states no licence, so its author keeps all rights: ask csatti before reusing the design.