4 layers256.1 × 170.6 mm
4 layers100 × 60 mm
Simple just sensor
williamlin108/USAYPT2026_FlashSensor_MLWGS110kHz cutoff bandwidth; TO-5 Package Si-photodiode with TIA amplifier (G:2k)
- Size
- 100 × 60 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 78
- Nets
- 57
- Pads
- 242
- Tracks, vias
- 289, 235
- Pours
- 10
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 10 Jan 2026
- Updated
- 17 Jan 2026
Overview
Simple just sensor is an open-source printed circuit board by williamlin108, from the williamlin108/USAYPT2026_FlashSensor_MLWGS repository on GitHub. It is a 4-layer board of 100 × 60 mm with 78 parts on 57 nets, routed with 289 tracks and 235 vias.
It is built around the AD4008BCPZ-RL7, OP1177AR and LM27761DSG, with the MAX1044ESA+, 1N4148W and BSS138 among its other parts. Its parts include 31 capacitors, 14 resistors, 9 ICs, 5 diodes and 4 connectors. It belongs with the sensors and measurement boards of this library.
Main components
7
AD4008BCPZ-RL7
LFCSP-10(3x3)-40℃~+125℃ 1 1.71V~1.89V 16 1LSB 500kHz 93dB External Multiplexers Not supported SAR SPI Yes LFCSP-10(3x3) Analog to Digital Converters (ADC) ROHSAnalog DevicesAnalog To Digital Converters (ADC)
OP1177AR
SOIC-8-40℃~+125℃ 0.7V/us 1 1.3MHz 10mA 120dB 1nA 2nA 400uA 60uV 700nV/℃ 8nV/√Hz@1kHz Built-in compensation、Overvoltage Protection、Reverse-phase input protection SOIC-8 Precision Op Amps ROHSAnalog DevicesOperational Amplifier
LM27761DSG
WFDFN-8-EP(2x2)-40℃~+85℃ -5V~-1.5V 2.7V~5.5V 250mA 2MHz 2Ω 370uA 80% Inverted Support WFDFN-8-EP(2x2) Charge Pumps ROHSTexas InstrumentsCharge PumpsMAX1044ESA+
SOIC-8SOIC-8 Charge Pumps ROHSMaxim Integrated (Analog Devices)Charge Pumps
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
SMAJ15A
DO-214AC(SMA)-65℃~+150℃ 15V 16.4A@10/1000us 18.5V 1uA 24.4V 400W@10/1000us TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
README
README.mdUSAYPT2026_FlashSensor_MLWGS
10kHz cutoff bandwidth; TO-5 Package Si-photodiode with TIA amplifier (G:2k)
Parts
78| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 10uF | Capacitor_SMD:C_0805_2012Metric | C4, C5, C10, C12, C13, C19, C20, C21, C23, C24, C25, C26, C27, C28, C29, C30 +3 |
| 4 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4 |
| 3 | 330 | Resistor_SMD:R_0603_1608Metric | R8, R12, R14 |
| 3 | 47uF | Capacitor_SMD:CP_Elec_6.3x4.9 | C1, C2, C9 |
| 3 | 50 | Resistor_SMD:R_0603_1608Metric | R1, R9, R11 |
| 2 | 1nF | Capacitor_SMD:C_0603_1608Metric | C14, C15 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C11, C31 |
| 2 | 330pF | Capacitor_SMD:C_0603_1608Metric | C17, C18 |
| 2 | ADA4077-1xR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6, U7 |
| 2 | R_20mA | LED_SMD:LED_0805_2012Metric | D4, D5 |
| 1 | +5V | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP1 |
| 1 | -3V | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 1 | -5V | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP5 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | 11k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 130k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 18k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D3 |
| 1 | 27k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 330pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C22 |
| 1 | 3A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 47uF | Capacitor_Tantalum_SMD:CP_EIA-6032-15_Kemet-U_HandSolder | C3 |
| 1 | 4k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10 |
| 1 | 75k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 820pF | Capacitor_SMD:C_0603_1608Metric | C16 |
| 1 | 9.1k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | AD4008BCPZ-RL7 | Library:CP_10_9_ADI | U2 |
| 1 | ADC+ | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP3 |
| 1 | BNC_V | Connector_Coaxial:BNC_TEConnectivity_1478204_Vertical | J3 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BXL | Library:BNX022-01L_MUR | FL1 |
| 1 | Barrel_Jack_MountingPin | Library:BarrelJack_Horizontal_N | J1 |
| 1 | Conn_01x07_MountingPin | Connector_JST:JST_ZH_B7B-ZR-SM4-TF_1x07-1MP_P1.50mm_Vertical | J2 |
| 1 | D_Photo | Library:TO99_BPW20RF_VIS | D2 |
| 1 | G5V-1 | Relay_THT:Relay_SPDT_Omron_G5V-1 | K1 |
| 1 | GND | TestPoint:TestPoint_Keystone_5019_Miniature | TP6 |
| 1 | LD1117S18TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U9 |
| 1 | LM1084-5.0 | Package_TO_SOT_SMD:TO-263-3_TabPin2 | U3 |
| 1 | LM27761 | Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm | U4 |
| 1 | Logo_Open_Hardware_Small | Library:MLWGS_LOGO_F | SYM1 |
| 1 | MAX1044 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | OP1177AR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | REF | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP4 |
| 1 | REF5040AD | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | RFShield_TwoPieces | Library:Laird_Technologies_BMI-S-210-F_44.00x30.50mm_N | J4 |
| 1 | SMAJ15A | Diode_SMD:D_SMA | D1 |
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Questions
How big is the Simple just sensor PCB?
It measures 100 × 60 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Simple just sensor use?
78 parts, built around the AD4008BCPZ-RL7, OP1177AR, LM27761DSG and MAX1044ESA+. 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 Simple just sensor KiCad files?
From the williamlin108/USAYPT2026_FlashSensor_MLWGS repository on GitHub, at the commit this page was made from: the board is Sensor_Kicad9.0/simple_just_sensor/simple_just_sensor.kicad_pcb and its schematic Sensor_Kicad9.0/simple_just_sensor/simple_just_sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Simple just sensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask williamlin108 before reusing the design.