

SFduino UNO S2
SF32LB52 Devkit
- Size
- 68.6 × 53.3 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 133
- Nets
- 137
- Pads
- 514
- Tracks, vias
- 1,026, 188
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Dec 2024
- Updated
- 15 Dec 2024
Overview
SFduino UNO S2 is an open-source printed circuit board by HalfSweet, from the HalfSweet/SFduino-UNO-S2 repository on GitHub. It is a 4-layer board of 68.6 × 53.3 mm with 133 parts on 137 nets, routed with 1,026 tracks and 188 vias.
It is built around the FM8625H, CH343P and MT3608, with the NS4150B, PY25Q128HA-WXH-IR and MT9700 among its other parts. Its parts include 62 capacitors, 27 resistors, 12 ICs, 7 connectors and 4 diodes.
Main components
12FM8625H
DFN-6(0.7x1.1)-40℃~+90℃ 0.45dB 1.62V~3.3V 100MHz~6GHz 30dB 38dBm Integrated control logic SPDT DFN-6(0.7x1.1) RF Switches ROHSShenzhen Fuman ElecRF SwitchesCH343P
TQFN-16-EP(3x3)-40℃~+85℃ 3.3V、5V 3mA 6Mbps 90uA USB 2.0 USB to UART TQFN-16-EP(3x3) USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB ConvertersMT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC ConvertersNS4150B
MSOP-8-40℃~+85℃ -80dB 0.1% 1 Pair Differential Inputs 1-Channel 3V~5.25V 3Wx1@4Ω 4mA 88%、90% Automatic mute/no-noise switch、Enable/shutdown function、Filterless architecture、ESD protection Class D MSOP-8 Audio Amplifiers ROHSShenzhen Nsiway TechAudio AmplifiersPY25Q128HA-WXH-IR
WSON-8-40℃~+85℃ 100,000 cycles 128Mbit 133MHz 15uA 2.4ms 2.7V~3.6V 20 Years SPI WSON-8 NOR FLASH ROHSPUYANOR FLASHMT9700
SOT-23-5-40℃~+85℃ 1 2.4V~5.5V 2A 80mΩ Active High High Side Switch Short-Circuit Protection(SCP)、Overcurrent Protection(OCP)、Over Temperature Protection SOT-23-5 Power Distribution Switches ROHS西安航天民芯Power Distribution SwitchesCH334P
QFN-16(3x3)-40℃~+85℃ 0.4mA 3.3V 4 480Mbps 85mA Hub USB 2.0 QFN-16(3x3) USB HUB Controllers ROHSWCH (Nanjing Qinheng Microelectronics)USB HUB ControllersME6211C33M5G-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) RegulatorsTPS563201
UncategorisedTexas InstrumentsDSS34
SOD-123FL-50℃~+125℃ 1 Independent 3A 40V 500uA@40V 550mV@3A SOD-123FL Schottky Diodes ROHSBORNSchottky DiodesSI2305
SOT-23-55℃~+150℃ 1 P-Channel 12V 15nC@4.5V 290pF 350mW 4.1A 45mΩ@4.5V 740pF 900mV SOT-23 MOSFETs ROHSGuangdong HottechMOSFETsAO3407
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 1V 260pF 30V 37pF 4.1A 75mΩ@4.5V P-Channel ±20V SOT-23 MOSFETs ROHSBORNMOSFETs
README
README.mdSFduino-UNO-S2
Parts
133| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C15, C20, C23, C27, C30, C33, C36, C39, C48, C50, C52, C53, C58, C59, C62 |
| 10 | 1u | Capacitor_SMD:C_0402_1005Metric | C6, C7, C28, C29, C42, C43, C45, C49, C51, C57 |
| 8 | 10u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C18, C19, C54, C55, C56 |
| 6 | 22u | Capacitor_SMD:C_0603_1608Metric | C24, C25, C26, C31, C32, C47 |
| 6 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C4, C5, C8, C9, C14, C34 |
| 5 | 2.2u | Capacitor_SMD:C_0402_1005Metric | C11, C12, C13, C38, C44 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R7, R11, R27 |
| 4 | 4.7k | Resistor_SMD:R_0402_1005Metric | R5, R19, R21, R22 |
| 4 | MountingHole_3.2mm | Arduino_MountingHole:MountingHole_3.2mm | MH1, MH2, MH3, MH4 |
| 4 | TBD | Capacitor_SMD:C_0402_1005Metric | C16, C17, C60, C61 |
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R8, R20, R23 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R3, R15, R16 |
| 3 | 330p | Capacitor_SMD:C_0402_1005Metric | C35, C37, C40 |
| 3 | DSS34 | Diode_SMD:D_SOD-123F | D1, D2, D3 |
| 2 | 100R | Resistor_SMD:R_0402_1005Metric | R24, R25 |
| 2 | 10u | Capacitor_SMD:C_0603_1608Metric | C21, C22 |
| 2 | 120R@100M | Inductor_SMD:L_0402_1005Metric | FB1, FB2 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R10, R12 |
| 2 | 43.2k | Resistor_SMD:R_0402_1005Metric | R13, R14 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R17, R18 |
| 2 | MT9700 | Package_TO_SOT_SMD:SOT-23-5 | U3, U10 |
| 2 | SI2305 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | TBD_R | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 0524P | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U11 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R26 |
| 1 | 1.5n | Capacitor_SMD:C_0402_1005Metric | C46 |
| 1 | 10n | Capacitor_SMD:C_0402_1005Metric | C41 |
| 1 | 12M | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y2 |
| 1 | 2.2uH | Inductor_SMD:L_Sunlord_SWPA4020S | L2 |
| 1 | 4.7uH | Inductor_SMD:L_Sunlord_SWPA4020S | L3 |
| 1 | 4.7uH | Inductor_SMD:L_Murata_DFE201610P | L1 |
| 1 | 470n | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 48M | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 54.9k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 73.2k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | AO3407 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | Analog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | Antenna_Shield | Connector_Coaxial:U.FL_Molex_MCRF_73412-0110_Vertical | AE2 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | CA-C03 | CrossAir ANT:CA-C03 | AE1 |
| 1 | CH334P | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm | U8 |
| 1 | CH343P | Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm | U9 |
| 1 | CX90M | My USB Connector:USB-C-SMD_CX90M-16P | J6 |
| 1 | DC050-T | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | DC1 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | FM8625H | Package_LGA:Infineon_PG-TSNP-6-10_0.7x1.1mm_0.7x1.1mm_P0.4mm | U12 |
| 1 | FPC 16p 0.5mm | Connector_FFC-FPC:Hirose_FH12-16S-0.5SH_1x16-1MP_P0.50mm_Horizontal | J5 |
| 1 | FSM42A3729 | micphone:MIC-SMD_4P-L3.8-W3.0 | MIC1 |
| 1 | ME6211C33M5 | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | MT3608 | Package_TO_SOT_SMD:SOT-23-6 | U7 |
| 1 | MX1.25 2P | Connector_JST:JST_GH_SM02B-GHS-TB_1x02-1MP_P1.25mm_Horizontal | J7 |
| 1 | NS4150B | Package_SO:MSOP-8_3x3mm_P0.65mm | U6 |
| 1 | PY25Q128HA-WXH-IR | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U2 |
| 1 | Power | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | SF32LB527UD6 | Package_DFN_QFN:ArtInChip_QFN-68-1EP_7x7mm_P0.35mm_EP5.49x5.49mm | U1 |
| 1 | SK-3293S | My Switch:SW-SMD_SK-3293S_mini_7P | SW2 |
| 1 | SKHMQLE010 | My Switch:KEY-SMD_4P-L6.2-W6.5-P4.50-LS8.0_SKHMXX | SW1 |
| 1 | Speaker | speak:FUET-1818-1.8x1.8mm-H6.1mm | LS1 |
| 1 | TPS563201 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
Questions
How big is the SFduino UNO S2 PCB?
It measures 68.6 × 53.3 mm and has 4 copper layers, 1.6 mm thick.
What parts does the SFduino UNO S2 use?
133 parts, built around the FM8625H, CH343P, MT3608 and NS4150B. 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 SFduino UNO S2 KiCad files?
From the HalfSweet/SFduino-UNO-S2 repository on GitHub, at the commit this page was made from: the board is SFduino-UNO-S2.kicad_pcb and its schematic Audio.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SFduino UNO S2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask HalfSweet before reusing the design.
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