SIL-CM4
About the SIL-CM4 PCB
SIL-CM4 is an open source Raspberry Pi PCB design by raybello, published on GitHub. It is a 4-layer board measuring 110.9 × 143.4 mm, with 74 components from 50 distinct parts.
Its main chip is the COMPUTEMODULE4-CM4, from the Raspberry Pi family. Other key parts include the LD1117S33TR_SOT223, LMR16030SDDAR, FE1.1S, AP2822CKATR-G1 and AP2141D_(Active_Low). By type, the board carries 28 capacitors, 16 connectors, 11 resistors, 8 ICs, 4 diodes and 2 jumpers.
From the project
Repository for KICAD PCB Designs
Main components on the SIL-CM4
SIL-CM4 bill of materials (BOM)
74 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LD1117S33TR_SOT223 | SOT-223-3_TabPin2 | U1 |
| 1 | LMR16030SDDAR | Texas_HSOP-8-1EP_3.9x4.9mm_P1.27mm_ThermalVias | U2 |
| 1 | FE1.1S FE1.1s | SSOP-28_3.9x9.9mm_P0.635mm | U3 |
| 1 | AP2822CKATR-G1 | SOT-23-5 | U5 |
| 1 | AP2141D_(Active_Low) | MSOP-8-1EP_3x3mm_P0.65mm_EP1.68x1.88mm | U7 |
| 2 | 74LVC1G07 | SOT-23-5 | U8, U9 |
| 1 | MPU-6050 | InvenSense_QFN-24_4x4mm_P0.5mm | U14 |
| 1 | DMP3013SFV | Diodes_PowerDI3333-8 | Q1 |
| 1 | 12MHZ 12MHz | Crystal_SMD_TXC_7A-2Pin_5x3.2mm | Y1 |
| 1 | null Power Jumper | PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | C381112 Barrel_Jack | BarrelJack_CUI_PJ-063AH_Horizontal_CircularHoles | J2 |
| 1 | null WiFi_BT_Disable | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | null GLOBAL_EN_RUN_PG | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 2 | C132563 USB_B_Micro | USB_Micro-B_Amphenol_10118194_Horizontal | J5, J9 |
| 1 | THD-02-R | PinHeader_2x02_P2.54mm_Vertical | J6 |
| 2 | HDMI_A_1.4 | EDAC 690-019-298-412 | J7, J8 |
| 1 | PI_20 | PinHeader_2x20_P2.54mm_Vertical | J10 |
| 1 | null ANALOG_BOOT_PINS | PinHeader_2x07_P2.54mm_Vertical | J11 |
| 4 | C591765 USB_A | USB_A_Molex_67643_Horizontal | J13, J15, J16, J17 |
| 1 | Micro_SD_Card | microSD_HC_Wuerth_693072010801 | J14 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 3V3_SEL 3v3_SEL | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | CPU_5V_EN | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | COMPUTEMODULE4-CM4 ComputeModule4-CM4 | Raspberry-Pi-4-Compute-Module | Module1 |
| 1 | C116501 WAKE_BTN | SW_SPST_PTS810 | SW1 |
| 1 | MMBZ5242B | D_SOT-23_ANK | D1 |
| 1 | B340AG | D_SMC | D2 |
| 1 | C264408 LED_GREEN | LED_0402_1005Metric | D3 |
| 1 | C136765 LED_RED | LED_0402_1005Metric | D4 |
| 1 | 8.2UH 8.2uH | L_Bourns_SRP7028A_7.3x6.6mm | L1 |
| 3 | 100NF 100nF | C_0402_1005Metric | C1, C2, C11 |
| 7 | 10UF 10uF | C_0402_1005Metric | C3, C4, C5, C14, C16, C17, C24 |
| 2 | 2.2UF 2.2uF | C_0402_1005Metric | C6, C7 |
| 2 | 47UF 47uF | C_0402_1005Metric | C8, C9 |
| 1 | C2857967 C_SS | C_0402_1005Metric | C10 |
| 2 | 22PF 22pF | C_0402_1005Metric | C12, C21 |
| 1 | 10U 10u | C_0402_1005Metric | C13 |
| 5 | 0.1UF 0.1uF | C_0402_1005Metric | C18, C19, C20, C25, C28 |
| 1 | 10NF 10nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C22 |
| 2 | 0.1UF 0.1uF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C23, C27 |
| 1 | 2.2NF 2.2nF | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C26 |
| 1 | 120UF 120uF | C_0402_1005Metric | C29 |
| 1 | 12K | R_0402_1005Metric | R1 |
| 1 | 100K | R_0402_1005Metric | R2 |
| 1 | 49.9K | R_0402_1005Metric | R3 |
| 1 | 17.8K | R_0402_1005Metric | R4 |
| 2 | 1K | R_0402_1005Metric | R5, R13 |
| 1 | 10K | R_0402_1005Metric | R6 |
| 1 | C2909316 12K 1% | R_0402_1005Metric | R8 |
| 1 | 2.7K | R_0402_1005Metric | R15 |
| 2 | 2.2K | R_0402_1005Metric | R18, R19 |
SIL-CM4 design files
The KiCad project lives in the raybello/KICAD-PCBs repository on GitHub; these links point at the commit this page was built from.
SIL-CM4: common questions
What microcontroller does the SIL-CM4 use?
The SIL-CM4 is built around the COMPUTEMODULE4-CM4, from the Raspberry Pi family.
How big is the SIL-CM4 PCB?
The SIL-CM4 measures 110.9 × 143.4 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the SIL-CM4?
74 components, from 50 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the SIL-CM4 design files?
From the raybello/KICAD-PCBs repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the SIL-CM4 design in my own project?
The repository has no license, so all rights stay with raybello. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the SIL-CM4 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
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