Qsbc
About the Qsbc PCB
Qsbc is an open source PCB design by qfreiman, published on GitHub under the GPL-3.0 license. It is a 8-layer board measuring 80 × 80 mm, with 409 components from 82 distinct parts.
Other key parts include the MIMX8MM6DVTLZAA, MT53D1024M32D4DT-046 WT:D, BD71847AMWV-E2, SN74LVC2G04DCKR and NX5P3363UKZ. By type, the board carries 220 capacitors, 117 resistors, 40 ICs, 10 connectors, 8 diodes and 6 inductors.
From the project
Single Board Computer based on the i.MX8M Mini
- i.MX8M Mini 4x 1.8GHz ARM Cortex-A53 - 4GB LPDDR4 - 4MB QSPI Flash - 64GB eMMC - M.2 2230 Slot - MicroSD card slot - 2x USB Type-C DRP - USB Type-C Power in - USB Type-C debug port - 10/100/1000 Ethernet - Displayport output
- USB-UART ICs need to have VDDIO derived from USB VBUS so they do not reset on board reset (or find a different ic)
- USB VBUS fault pins need to be connected to usb phy oc pads, not gpio pins
Main components on the Qsbc
Qsbc bill of materials (BOM)
409 components, 82 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MIMX8MM6DVTLZAA | SOT1967-1 | U1 |
| 1 | MT53D1024M32D4DT-046 WT:D MT53D1024M32D4DT | BGA-200_10.0x14.5mm_Layout12x22_P0.80x0.65mm | U2 |
| 1 | BD71847AMWV-E2 BD71847MWV | UQFN56BV7070 | U3 |
| 1 | SN74LVC2G04DCKR 74LVC2G04 | SOT-363_SC-70-6 | U4 |
| 2 | NX5P3363UKZ NX5P3363 | WLCSP-16_2.225x2.17mm_P0.5mm | U5, U7 |
| 2 | TUSB320LIRWBR TUSB320LI | Texas_X2QFN-12_1.6x1.6mm_P0.4mm | U6, U8 |
| 5 | D5V0H1B2LP-7B D5V0H1B2LP | DFN100X60X45-2N | U9, U10, U15, U17, U28 |
| 11 | TPD4E02B04DQAR TPD4E02B04 | USON-10_2.5x1.0mm_P0.5mm | U11, U12, U18, U19, U23, U24, U25, U27 +3 |
| 1 | INA231AIYFFR INA231 | DSBGA-12 | U13 |
| 4 | 74LVC2G07FZ4-7 74LVC2G07 | SOT-886 | U14, U20, U30, U35 |
| 2 | CH343P | QFN-16-1EP_3x3mm_P0.5mm_EP1.45x1.45mm_ThermalVias | U16, U21 |
| 1 | RTL8211FD-CG RTL8211FD | QFN-40-1EP_5x5mm_P0.4mm_EP3.6x3.6mm_ThermalVias | U22 |
| 1 | W25Q32JWZPIQ W25Q32JWZP | WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U26 |
| 1 | SIP32431DR3-T1GE3 SiP32431DR3 | SOT-363_SC-70-6 | U29 |
| 1 | FSEIASLD-64G EMMC | FBGA-153 | U31 |
| 1 | SN74AXCH4T245RSVR 74AXCH4T245 | UQFN-16_1.6x2.4_Pitch0.4mm | U32 |
| 1 | TCA9803DGKR TCA9803 | VSSOP-8_3.0x3.0mm_P0.65mm | U33 |
| 1 | SI52112-B5-GM2 | DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm | U34 |
| 1 | LP5912-1.2DRVR LP5912-1.2DRV | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_ThermalVias | U36 |
| 1 | SN65DSI86ZXHR SN65DSI86 | BGA-64 | U37 |
Show 62 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ECS-2520MV-260-CN-TR 26Mhz | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | ECS-.327-12.5-12R-C-TR 32.768Khz | Crystal_SMD_2012-2Pin_2.0x1.2mm | Y1 |
| 2 | ECS-250-10-33B-CWN-TR 25MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2, Y4 |
| 1 | ECS-240-10-33B-7KM-TR 24Mhz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y3 |
| 3 | USB4105-GF-A USB_C_Receptacle_USB2.0 | USB_C_Receptacle_USB4105-GF-A | J1, J2, J4 |
| 1 | KUSBX-SL-CS1N14-B USB_C_Receptacle_USB2.0 | KUSBX-SL-CS1N14-B | J3 |
| 1 | ARJM11D7-502-AB-EW2 | ARJM11D7-502-AB-EW2 | J5 |
| 1 | MEM2051-00-195-00-A Micro_SD_Card_Det1 | GCT_MEM2051-00-195-00-A_REVC | J6 |
| 1 | M20-8890645 Conn_01x06_Male | Harwin_M20-89006xx_1x06_P2.54mm_Horizontal | J8 |
| 1 | PRT-14417 Conn_01x04_MountingPin | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J9 |
| 1 | 1-2199119-6 | 1-2199230-6 | J10 |
| 1 | 47272-0001 Connector_Displayport_Source | Connector_Displayport_Molex_472720001 | J11 |
| 1 | 9774015243R MountingHole_Pad | Mounting_Wuerth_WA-SMSI-M2_H1.5mm_9774015243 | H5 |
| 1 | EVQ-P7A01P SW_Push | SW_SPST_EVQP7A | SW1 |
| 1 | DHN-02-V-T/R SW_DIP_x02 | DHN-02 | SW2 |
| 3 | SML-E12Y8WT86 LED_Yellow | LED_0603_1608Metric | D1, D3, D8 |
| 2 | SML-E12D8WT86 LED_Orange | LED_0603_1608Metric | D2, D4 |
| 1 | SML-E12M8WT86 LED_Green | LED_0603_1608Metric | D5 |
| 1 | 150060BS55040 LED_Blue | LED_0603_1608Metric | D6 |
| 1 | BAT54XV2T1G | D_SOD-523 | D7 |
| 5 | DFE252012P-R47M=P2 0.47uH | L_1008_2520Metric | L1, L2, L3, L5, L6 |
| 1 | DFE252012P-1R0M=P2 1uH | L_1008_2520Metric | L4 |
| 25 | GRM033R60J105MEA2D 1uF | C_0201_0603Metric | C1, C5, C7, C8, C11, C12, C14, C16 +17 |
| 29 | GRM155R60J106ME44D 10uF | C_0402_1005Metric | C2, C3, C4, C9, C10, C13, C34, C37 +21 |
| 42 | GRM033R60J224ME15D 0.22uF | C_0201_0603Metric | C6, C15, C32, C35, C36, C39, C41, C42 +34 |
| 1 | GCM033R71C222KA55D 2200pF | C_0201_0603Metric | C33 |
| 11 | CL05A475MP5NRNC 4.7uF | C_0402_1005Metric | C38, C60, C61, C62, C73, C74, C75, C76 +3 |
| 3 | GRM155R61A225KE95D 2.2uF | C_0402_1005Metric | C57, C58, C59 |
| 11 | CL10A106KP8NNNC 10uF | C_0603_1608Metric | C63, C64, C65, C66, C67, C68, C69, C70 +3 |
| 11 | CL05A105KP5NNNC 1uF | C_0402_1005Metric | C71, C72, C92, C93, C105, C107, C111, C113 +3 |
| 12 | CL10A226MP8NUNE 22uF | C_0603_1608Metric | C78, C79, C80, C81, C82, C83, C84, C85 +4 |
| 3 | GRM0335C1H180JA01D 18pF | C_0201_0603Metric | C89, C91, C128 |
| 34 | CL05A104KA5NNNC 0.1uF | C_0402_1005Metric | C94, C95, C96, C99, C100, C106, C108, C109 +26 |
| 2 | GRM1555C1H102JA01D 1000pF | C_0402_1005Metric | C97, C98 |
| 4 | GRM033R61A224KE90D 0.22uF | C_0201_0603Metric | C103, C104, C154, C155 |
| 6 | 04025U140FAT2A 14pF | C_0402_1005Metric | C123, C125, C144, C145, C152, C153 |
| 1 | GCM188R72A103KA37D 0.01uF | C_0603_1608Metric | C127 |
| 23 | CL03A104KP3NNNC 0.1uF | C_0201_0603Metric | C190, C194, C195, C198, C199, C200, C201, C203 +15 |
| 1 | GRM033R61E103KA12D 0.01uF | C_0201_0603Metric | C191 |
| 1 | C1210C102KGRACTU 1000pF | C_1210_3225Metric | C220 |
| 1 | RC0201FR-0710KL 10K | R_0201_0603Metric | R1 |
| 3 | RC0201FR-07240RL 240R | R_0201_0603Metric | R2, R7, R10 |
| 2 | RC0201FR-07150RL 150R | R_0201_0603Metric | R3, R4 |
| 17 | RC0402FR-07100KL 100K | R_0402_1005Metric | R11, R15, R16, R17, R18, R21, R22, R23 +9 |
| 20 | RC0402FR-070RL 0R | R_0402_1005Metric | R13, R25, R26, R40, R41, R42, R43, R52 +12 |
| 22 | RC0402FR-0710KL 10K | R_0402_1005Metric | R19, R20, R83, R85, R87, R88, R91, R94 +14 |
| 4 | RC0201FR-0730KL 30K | R_0201_0603Metric | R29, R30, R35, R36 |
| 4 | RC0402FR-071ML 1M | R_0402_1005Metric | R31, R32, R153, R154 |
| 2 | RC0402FR-07200RL 200R | R_0402_1005Metric | R33, R34 |
| 1 | ERJ8CWFR010V 10m | R_1206_3216Metric | R44 |
| 4 | RC0402FR-075K1L 5.1K | R_0402_1005Metric | R45, R47, R49, R50 |
| 6 | RC0402FR-072K2L 2.2K | R_0402_1005Metric | R46, R51, R56, R58, R93, R137 |
| 6 | RC0201FR-074K7L 4.7K | R_0201_0603Metric | R59, R60, R62, R64, R65, R66 |
| 14 | RC0402JR-074K7L 4.7K | R_0402_1005Metric | R68, R69, R77, R78, R80, R108, R109, R110 +6 |
| 1 | RC0402FR-071K5L 1.5K | R_0402_1005Metric | R70 |
| 1 | RC0402FR-072K49L 2.49K | R_0402_1005Metric | R76 |
| 2 | RC0402FR-07470RL 470R | R_0402_1005Metric | R81, R82 |
| 3 | RC0201FR-070RL 0R | R_0201_0603Metric | R84, R86, R90 |
| 1 | RC0402FR-07510KL 510K | R_0402_1005Metric | R98 |
| 1 | RC0402FR-078K2L 8.2K | R_0402_1005Metric | R133 |
| 1 | RC0402FR-0751KL 51K | R_0402_1005Metric | R150 |
| 1 | RC1206FR-071ML 1M | R_1206_3216Metric | R156 |
Qsbc design files
The KiCad project lives in the qfreiman/qsbc repository on GitHub; these links point at the commit this page was built from.
- Layoutqsbc.kicad_pcb
- Schematicqsbc.kicad_sch
Qsbc: common questions
How big is the Qsbc PCB?
The Qsbc measures 80 × 80 mm, has 8 copper layers and is 1.3 mm thick.
How many components are on the Qsbc?
409 components, from 82 distinct parts. The full bill of materials is listed on this page.
Where can I download the Qsbc design files?
From the qfreiman/qsbc repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Qsbc design in my own project?
Yes, under the terms of its GPL-3.0 license, which qfreiman chose for the repository.