RabidUsb costar
SeanCline·RabidKeyboard·usb_costar/RabidUsb_costar.kicad_pcb
About the RabidUsb costar PCB
RabidUsb costar is an open source PCB design by SeanCline, published on GitHub under the MIT license. It is a 2-layer board measuring 50 × 18 mm, with 9 components from 7 distinct parts.
Other key parts include the C85364. By type, the board carries 2 inductors, 2 resistors, 1 IC, 1 connector, 1 fuse and 1 diode.
It belongs with the keyboards designs in this gallery.
From the project
A replacement PCB and plate for the old CM Storm QuickFireRapid and Filco Majestouch TKL keyboards.
This project is an ode to the old-school Cooler Master QuickFire Rapid TKL keyboard -- a board that introduced many people to the mechanical keyboard hobby years ago.
Over time, upgrade parts for these old mechanical keyboards have become hard to find. This project attempts to solve that by providing PCB designs that can be manufactured by services like JLCPCB or PCBWay.

Main components on the RabidUsb costar
RabidUsb costar bill of materials (BOM)
9 components, 7 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C85364 SRV05-4 | SOT-23-6 | U1 |
| 1 | C319148 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J1 |
| 1 | C12559 500mA | Fuse_1812_4532Metric | F1 |
| 1 | C8598 D_Schottky | D_SOD-123 | D1 |
| 2 | FerriteBead_Small | L_0805_2012Metric | FB1, FB2 |
| 1 | C14663 100nF | C_0603_1608Metric | C1 |
| 2 | C23186 5.1K | R_0603_1608Metric | R1, R2 |
RabidUsb costar design files
The KiCad project lives in the SeanCline/RabidKeyboard repository on GitHub; these links point at the commit this page was built from.
RabidUsb costar: common questions
How big is the RabidUsb costar PCB?
The RabidUsb costar measures 50 × 18 mm, has 2 copper layers and is 1.09 mm thick.
How many components are on the RabidUsb costar?
9 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the RabidUsb costar design files?
From the SeanCline/RabidKeyboard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the RabidUsb costar design in my own project?
Yes, under the terms of its MIT license, which SeanCline chose for the repository.
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