2 layers61.2 × 61.2 mm
OpenBCI Wifi Shield
nestorufpe/OpentDCS-Hardware
All design files made with KiCad PCB design software. http://kicad-pcb.org/
35 parts1
2 layers30 × 13 mm
Discrete Opamp
electricalhog/Discrete_OpampOff-the-shelve based FET input opamp designed in ECE5204 and brought to PCB
- Size
- 30 × 13 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 18
- Pads
- 99
- Tracks, vias
- 179, 29
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Aug 2024
- Updated
- 8 Aug 2024
Overview
Discrete Opamp is an open-source printed circuit board by electricalhog, from the electricalhog/Discrete_Opamp repository on GitHub. It is a 2-layer board of 30 × 13 mm with 28 parts on 18 nets, routed with 179 tracks and 29 vias.
It is built around the REF200AU, BSS84AK and 2N7002KQ, with the 2N2222A and 2N2907A among its other parts. Its parts include 18 transistors, 5 capacitors, 3 resistors, 1 IC and 1 connector.
Main components
5
REF200AU
SOIC-8-25℃~+85℃ 100uA 2.5V~40V Current Source ±0.25% SOIC-8 Current Source / Constant Current Source ROHSTexas InstrumentsCurrent Source / Constant Current Source
BSS84AK
SOT-231 P-Channel 13.5Ω@10V 180mA 350pC@5V 36pF 420mW 50V P-Channel SOT-23 MOSFETs ROHSNexperiaMOSFETs2N7002KQ
SOT-23-55℃~+150℃ 1 N-channel 2.5V 25pF 300pC@10V 380mA 3Ω@5V 50pF 540mW 5pF 60V N-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFET
2N2222A
TO-92-55℃~+150℃ 1 NPN 100MHz 100nA 400 40V 5V 600mA 600mV 625mW NPN TO-92 Bipolar (BJT) ROHSSlkorBipolar (BJT)2N2907A
TO-921 PNP 1.6V 100 100nA 200MHz 5V 600mA 60V 625mW PNP TO-92 Bipolar (BJT) ROHSFoshan Blue Rocket ElecBipolar (BJT)
README
README.mdDiscrete Opamp
Designed using off-the-shelf components
https://github.com/user-attachments/assets/8ae4dc66-9749-4e35-9709-75ff86e5063c
Real-world testing demonstrated its basic functionality but fell short of optimistic simulation data.
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | BSS84AK | Library:SOT8015 | Q1, Q3, Q4, Q5, Q6, Q7, Q11, Q17, Q18 |
| 5 | 2N7002KQ | Library:SOT8015 | Q2, Q8, Q12, Q15, Q16 |
| 4 | 1u | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C5 |
| 2 | 2N2222A | Package_TO_SOT_SMD:SOT-883 | Q9, Q13 |
| 2 | 2N2907A | Package_TO_SOT_SMD:SOT-883 | Q10, Q14 |
| 2 | 33.2k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 1 | 100p | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 18.7k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | Conn_01x07_Pin | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J1 |
| 1 | REF200AU | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
Questions
How big is the Discrete Opamp PCB?
It measures 30 × 13 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Discrete Opamp use?
28 parts, built around the REF200AU, BSS84AK, 2N7002KQ and 2N2222A. 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 Discrete Opamp KiCad files?
From the electricalhog/Discrete_Opamp repository on GitHub, at the commit this page was made from: the board is Board/Discrete_Opamp.kicad_pcb and its schematic Board/Discrete_Opamp.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Discrete Opamp design in my own project?
Its repository states no licence, so its author keeps all rights: ask electricalhog before reusing the design.
Similar boards
- 2 layers89.3 × 50 mm
MM58167-ISA RTC
jensma-de/MM58167-ISA-RTC
RTC module for the ISA slot. With schematics, project files in kicad and open source software to drive the clock.
29 parts9 - 2 layers97.6 × 76.8 mm
- 2 layers
WiFi VirtDisk WemosD1mini
welzel-online/WiFi-VirtDisk
The WiFi-VirtDisk is a network-based storage solution that replaces or supplements the classic SD card approach. The hardware consists of an ESP8266 (D1 mini), which is connected to the SPI port (SD card).
14 parts5GPL-2.0 - 2 layers59.7 × 62.2 mm
IBolit ngo kicad
MCMarcusAntony/iBOLIT-1.5
Tools added to this board are: - Logic probe included on Top three pin connector. - Lighting and acoustic signals to identify HIGH and LOW status.
38 parts2 - 2 layers100 × 100 mm
Mod2Arinc
morris6/Modulo-Two_ARINC-429_Converter
Converting a Modulo-Two Serial Stream to Arinc-429 Serial Words
105 parts1 - 2 layers77.6 × 78.1 mm
SCRController
UAA-F14/PCBs-Design
Power electronics PCB coursework — SCR controller, buck converter, Class D amplifier, DC-AC inverter, and a protected power supply Resources
43 parts1 - 2 layers
