4 layers60 × 118 mm
Module
vd-rd/sbc_allwinner_D1
Open Hardware SBC with Allwinner D1 RISC-V CPU and 512MB DDR3 RAM
153 parts1
4 layers66 × 55 mm
Module
vd-rd/sbc_allwinner_a332- Size
- 66 × 55 mm
- Copper layers
- 4
- Thickness
- 1.19 mm
- Parts
- 168
- Nets
- 440
- Pads
- 1,203
- Tracks, vias
- 4,430, 509
- Pours
- 27
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Jan 2026
- Updated
- 17 Aug 2026
Overview
Module is an open-source printed circuit board by vd-rd, from the vd-rd/sbc_allwinner_a33 repository on GitHub. It is a 4-layer board of 66 × 55 mm with 168 parts on 440 nets, routed with 4,430 tracks and 509 vias.
It is built around the A33, AP6255 and W25Q128JVSIQ, with the AXP223, MX52LM04A11XSI and USBLC6-2P6 among its other parts. Its parts include 109 capacitors, 24 resistors, 8 ICs, 7 inductors and 4 connectors.
Main components
7
A33
TFBGA-282-20℃~+75℃ 32 Bit 6bit ARM Cortex-A7 Built-in+External External TFBGA-282 Microcontrollers (MCU/MPU/SOC) ROHSAllwinner TechMicrocontrollers (MCU/MPU/SOC)
AP6255
SMD,12x12mm-30℃~+85℃ -86dBm 14dBm 2.4GHz 3.3V Bluetooth4.2、IEEE802.11a/b/g/n/ac Integrated Bluetooth function On-board PCB Antenna SMD,12x12mm WiFi Modules ROHSAMPAK TechWiFi Modules
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASHAXP223
QFN-68-EP(8x8)-20℃~+80℃ 2.9V~5V 2.9V~6.3V Dynamic voltage scaling、Overcurrent Protection、Operating status indication、Adjustable current limiting、Power-on timing control QFN-68-EP(8x8) Power Management - Specialized ROHSX-Powers TechPower Management - SpecializedMX52LM04A11XSI
FBGA-153(11.5x13)-40℃~+85℃ 4GB MLC eMMC 5.1 FBGA-153(11.5x13) eMMC ROHSMXICUncategorised
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
CSD25302Q2
SON-6(2x2)SON-6(2x2) MOSFETs ROHSTexas InstrumentsMOSFETs
README
README.mdsbc_allwinner_a33
Parts
168| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | 100nF | Capacitor_SMD:C_0402_1005Metric | C10, C11, C13, C14, C201, C202, C203, C204, C205, C206, C207, C209, C211, C212, C213, C214 +26 |
| 33 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C6, C21, C27, C28, C29, C31, C33, C43, C46, C47, C48, C57, C60, C61 +17 |
| 12 | 1uF | Capacitor_SMD:C_0402_1005Metric | C16, C18, C22, C26, C36, C42, C49, C50, C77, C78, C82, C83 |
| 12 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C1, C15, C17, C19, C64, C65, C67, C68, C73, C74, C75, C84 |
| 6 | 1.5uH | Inductor_SMD:L_APV_ANR252010 | L1, L2, L3, L4, L5, L6 |
| 6 | 22pF | Capacitor_SMD:C_0402_1005Metric | C3, C7, C90, C91, C107, C108 |
| 5 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5_DIN965 | H1, H2, H3, H4, H5 |
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R14, R17, R19 |
| 3 | 180 | Resistor_SMD:R_0402_1005Metric | R6, R7, R8 |
| 3 | 2.2k | Resistor_SMD:R_0402_1005Metric | R12, R200, R201 |
| 3 | 240 | Resistor_SMD:R_0402_1005Metric | R1, R4, R5 |
| 2 | 10m | Resistor_SMD:R_0805_2012Metric | R10, R11 |
| 2 | 22uF | Capacitor_Tantalum_SMD:CP_EIA-2012-15_AVX-P | C210, C217 |
| 2 | 33 | Resistor_SMD:R_0402_1005Metric | R3, R15 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R24, R26 |
| 2 | DDR3L-x8 | winbond:BGA-78_9x13_9.0x10.5mm | U3, U5 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_EVQP7C | SW1, SW2 |
| 1 | 10M | Resistor_SMD:R_0402_1005Metric | R101 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 1nF | Capacitor_SMD:C_0402_1005Metric | C54 |
| 1 | 2.2K | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 200k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 24MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | 4.7uH | Inductor_SMD:L_APV_ANR252010 | L8 |
| 1 | 47k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 6.8k | Resistor_SMD:R_0402_1005Metric | R20 |
| 1 | A33 | allwinner:BGA-282_17x17_14.0x14.0mm | U2 |
| 1 | AP6255 | sdio:lga44_12x12mm_P0.9 | U4 |
| 1 | AXP223 | xpowers:QFN-68-1EP_8x8mm_P0.4mm_EP5.5x5.5mm_ThermalVias | U6 |
| 1 | Antenna_Shield | Connector_Coaxial:U.FL_Hirose_U.FL-R-SMT-1_Vertical | AE1 |
| 1 | CSD25302Q2 | Package_SON:Texas_DQK | Q2 |
| 1 | Conn_02x18_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x18_P2.54mm_Vertical | J3 |
| 1 | Conn_02x22_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x22_P1.27mm_Vertical | J2 |
| 1 | Crystal_GND24_Small | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | Crystal_Small | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y100 |
| 1 | LED_BAGR | led:LED_RGB_Optosupply_OSTB0805C1E-A-0.8T | D4 |
| 1 | LED_Small | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | MX52LM04A11XSI | mxic:BGA153C50P14X14_1150X1300X80 | IC1 |
| 1 | Micro_SD_Card_Det | gct:MEM20610118800A | J1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP913 |
| 1 | Thermistor | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J5 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U7 |
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Questions
How big is the Module PCB?
It measures 66 × 55 mm and has 4 copper layers, 1.19 mm thick.
What parts does the Module use?
168 parts, built around the A33, AP6255, W25Q128JVSIQ and AXP223. 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 Module KiCad files?
From the vd-rd/sbc_allwinner_a33 repository on GitHub, at the commit this page was made from: the board is hardware/module.kicad_pcb and its schematic hardware/cpu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Module design in my own project?
Its repository states no licence, so its author keeps all rights: ask vd-rd before reusing the design.