I386sx socket
About the I386sx socket PCB
I386sx socket is an open source PCB design by skiselev, published on GitHub. It is a 2-layer board measuring 38.7 × 38.7 mm, with 14 components from 10 distinct parts.
Other key parts include the 80386SX/TI486SXLC/Cx486SLC and NCP1117-3.3. By type, the board carries 5 capacitors, 4 connectors, 3 jumpers and 2 ICs.
From the project
386SX Universal Socket Adapter
Schematic - Version 1.0 PCB Layout - Version 1.0
Position | Description -----------------|-------------------------------------------------------------------------------------------------- Closed (default) | 5V CPU: 5V from the socket is connected to the CPU VCC pins, bypassing the 3.3V voltage regulator Open | 3.3V CPU: CPU VCC pins are connected to the 3.3V voltage regulator
Main components on the I386sx socket
I386sx socket bill of materials (BOM)
14 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 80386SX/TI486SXLC/Cx486SLC | PQFP-100_19x19mm_P0.635mm_i386sx | U1 |
| 1 | NCP1117-3.3 | TO-252-2 | U2 |
| 1 | CPU 1-25 | PinHeader_2x13_P2.00mm_Vertical | J1 |
| 1 | CPU 26-50 | PinHeader_2x13_P2.00mm_Vertical | J2 |
| 1 | CPU 51-75 | PinHeader_2x13_P2.00mm_Vertical | J3 |
| 1 | CPU 76-100 | PinHeader_2x13_P2.00mm_Vertical | J4 |
| 2 | 5V/3.3V | SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 5V/3.3V | SolderJumper-3_P1.3mm_Bridged2Bar12_RoundedPad1.0x1.5mm_NumberLabels | JP3 |
| 3 | 100nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3 |
| 2 | 10uF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C4, C5 |
I386sx socket design files
The KiCad project lives in the skiselev/i386sx-socket repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad/i386sx-socket.kicad_pcb
- SchematicKiCad/i386sx-socket.kicad_sch
I386sx socket: common questions
How big is the I386sx socket PCB?
The I386sx socket measures 38.7 × 38.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the I386sx socket?
14 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the I386sx socket design files?
From the skiselev/i386sx-socket repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the I386sx socket design in my own project?
The repository has no license, so all rights stay with skiselev. Use it as a reference, and ask the author before reusing the design.