4 layers48 × 84 mm
FanControlHW
mrspieb/HW-FanControl
Everything required to build the PCB and case of the ventilation fan controller
84 partsGPL-3.0
4 layers75.5 × 78 mm
Current loop gen
andrzejkasica/CO-sensorProject based on ME2-CO gas sensor with current loop and 2 relays output.
- Size
- 75.5 × 78 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 126
- Nets
- 107
- Pads
- 375
- Tracks, vias
- 778, 196
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 2 Jun 2025
- Updated
- 2 Jun 2025
Overview
Current loop gen is an open-source printed circuit board by andrzejkasica, from the andrzejkasica/CO-sensor repository on GitHub. It is a 4-layer board of 75.5 × 78 mm with 126 parts on 107 nets, routed with 778 tracks and 196 vias.
It is built around the AMS1117-3.3, TPS54302 and USBLC6-2SC6, with the DMN65D8L-7(ES), SMAJ40CA and 2N2907AU among its other parts. Its parts include 34 capacitors, 33 resistors, 12 diodes, 7 connectors and 6 ICs. It belongs with the STM32 boards of this library.
Main components
10
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TPS54302
UncategorisedTexas InstrumentsUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
DMN65D8L-7(ES)
SOT-23SOT-23 MOSFETs ROHSElecSuperMOSFETs
SMAJ40CA
DO-214AC(SMA)ESD And Surge Protection (TVS/ESD)hongjiacheng
2N2907AU
SOT-89Bipolar (BJT)CBI
B340
SMC(DO-214AB)-55℃~+150℃ 1 Independent 100A 3A 40V 500mV@3A 500uA@40V SMC(DO-214AB) Schottky Diodes ROHSDiodes IncorporatedSchottky Diodes
BSP170P
SOT-223-55℃~+150℃ 1 P-Channel 160pF 170mΩ@10V 1W 2.25V 28pF 3A 60V SOT-223 MOSFETs ROHSJSMSEMIMOSFETsSS16
SMA(DO-214AC)-55℃~+150℃ 100uA@60V 1A 60V 700mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSFUXINSEMISchottky DiodesZXMP6A13FTA
SOT-23-55℃~+150℃ 1 P-Channel 1.5W 1.6A 11.3nC@10V 17.9pF 2.6V 240mΩ@4.5V 444.2pF 60V SOT-23 MOSFETs ROHSTECH PUBLICMOSFETs
README
README.mdCO-sensor
Project based on ME2-CO gas sensor with current loop and 2 relays output.
Parts
126| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C5, C6, C8, C9, C10, C11, C18, C27, C28, C34 |
| 5 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R26, R29, R30, R33 |
| 5 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R11, R15, R16, R22 |
| 5 | 22u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15, C16, C21, C22, C33 |
| 4 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R12, R13, R14 |
| 4 | GND | TestPoint:TestPoint_Keystone_5015_Micro-Minature | TP3, TP7, TP8, TP9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C23, C24, C25 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13, C14, C29 |
| 2 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R9 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R27 |
| 2 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C26, C32 |
| 2 | 10p | Capacitor_SMD:C_0402_1005Metric | C19, C20 |
| 2 | 120R | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB1, L1 |
| 2 | 15 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19, R21 |
| 2 | 150k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R18 |
| 2 | 1N4148 | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D10, D11 |
| 2 | 3k3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24, R28 |
| 2 | Conn_01x03 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type011_RT05503HBWC_1x03_P5.00mm_Horizontal | J5, J6 |
| 2 | DMN65D8L-7 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 2 | G5V-1 | Relay_THT:Relay_SPDT_Omron_G5V-1 | K1, K2 |
| 2 | RED | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | D5, D8 |
| 2 | SMAJ40CA | Diode_SMD:D_SMA | D2, D13 |
| 2 | SX33L_R1 | Diode_SMD:D_SMC | D3, D4 |
| 1 | 100 @ 100MHz | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | FB2 |
| 1 | 105k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | 10u | Inductor_SMD:L_Taiyo-Yuden_NR-80xx_HandSoldering | L2 |
| 1 | 10u | Capacitor_SMD:C_1210_3225Metric | C4 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric | C30 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7 |
| 1 | 13k3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 20k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R23 |
| 1 | 24V_XTR | TestPoint:TestPoint_Pad_D1.5mm | TP4 |
| 1 | 2N2907AU | Package_TO_SOT_SMD:SOT-89-3 | Q1 |
| 1 | 33k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_D1.5mm | TP12 |
| 1 | 40K | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 47u | Capacitor_SMD:C_1210_3225Metric | C31 |
| 1 | 49.9 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 50K | Resistor_SMD:R_0603_1608Metric | R32 |
| 1 | 511k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 5V | TestPoint:TestPoint_Pad_D1.5mm | TP5 |
| 1 | 75p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C17 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | B340 | Diode_SMD:D_SMC | D1 |
| 1 | BLUE | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | D6 |
| 1 | BSP170P | MyLibrary:SOT-223 | Q5 |
| 1 | Buck5V | TestPoint:TestPoint_Pad_D1.5mm | TP6 |
| 1 | CO Sensor connector | MyLibrary:ME2-CO sensor | J7 |
| 1 | CO_Vout | TestPoint:TestPoint_Pad_D1.5mm | TP13 |
| 1 | Current loop out | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J4 |
| 1 | Fuse_Small | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 1 | GREEN | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | D7 |
| 1 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Power 24V | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J1 |
| 1 | RotaryEncoder_Switch_MP | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW3 |
| 1 | SS16 | Diode_SMD:D_SMA | D9 |
| 1 | STM32L433CCTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U4 |
| 1 | SWD Debug | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J3 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | TPS54302 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | Thermistor_NTC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | TH1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10118194-0001LF_Horizontal | J2 |
| 1 | WSH-10451 | MyLibrary:wsh-10451 | U5 |
| 1 | XTR111AxDGQ | Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP2.2x3.1mm_Mask1.83x1.89mm_ThermalVias | U7 |
| 1 | XTR_Vin | TestPoint:TestPoint_Pad_D1.5mm | TP11 |
| 1 | XTR_Vout | TestPoint:TestPoint_Pad_D1.5mm | TP10 |
| 1 | XTR_Vout_IS | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | ZXMP6A13FTA | Package_TO_SOT_SMD:SOT-23 | Q4 |
Questions
How big is the Current loop gen PCB?
It measures 75.5 × 78 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Current loop gen use?
126 parts, built around the AMS1117-3.3, TPS54302, USBLC6-2SC6 and DMN65D8L-7(ES). 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 Current loop gen KiCad files?
From the andrzejkasica/CO-sensor repository on GitHub, at the commit this page was made from: the board is Current_loop_gen.kicad_pcb and its schematic Current_loop_gen.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Current loop gen design in my own project?
Its repository states no licence, so its author keeps all rights: ask andrzejkasica before reusing the design.
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