2 layers44.5 × 46.9 mm
OSO SWAT B1-jig
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
31 parts2.1k
2 layers65 × 38 mm
Filters
OregonIons/LC-Filter-PCBs1LC filter board PCB designs
- Size
- 65 × 38 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 10
- Pads
- 56
- Tracks, vias
- 152, 8
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 5 Feb 2020
- Updated
- 7 Jan 2026
Overview
Filters is an open-source printed circuit board by OregonIons, from the OregonIons/LC-Filter-PCBs repository on GitHub. It is a 2-layer board of 65 × 38 mm with 31 parts on 10 nets, routed with 152 tracks and 8 vias.
README
README.mdLC-Filter-PCBs
LC filter board PCB designs.
Allows for a wide variety of LC filters (up to 5-pole) to be rapidly prototyped.
Capacitor pads are 0805, but 0603 and 1208 will fit if hand-soldering. Pads are doubled up to allow fine-tuning by adding a second, smaller capacitor. Use of low ESR/ESL C0G type recommended.
Inductors pads are custom pads that allow any of the following to be installed from convenient Coilcraft deigner kits:
Coilcraft 1812LS - Ferrite core chip inductors 12-1000uH
Coilcraft 1812CS - Ceramic core chip inductors 1-33uH
Coilcraft 1515SQ, 2222Q, 2929Q - Air core inductors 47-500nH
Filters can be designed using the iFilter feature of AWR Design Environment, for which free educational licenses are available. Elsie is a simpler, but somewhat outdated, alternative.
Boards designed using Altium Designer 19. Pdf files can be found in releases.
An enclosure design is forthcoming. In the mean time, edge mount SMAs can be used for testing.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | UC | Filters_PcbLib.PcbLib:Capacitor | , C1, C2, C3, C4, C5, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19 +4 |
| 5 | UI | Filters_PcbLib.PcbLib:Inductor Universal | L1, L2, L3, L4, L5 |
| 4 | , , , | ||
| 2 | Comment | C__Users_Public_Documents_Altium_Projects_Filters_Filters_PcbLib.PcbLib:Edge Connector | In, Out |
Questions
How big is the Filters PCB?
It measures 65 × 38 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Filters use?
31 parts. 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 Filters KiCad files?
From the OregonIons/LC-Filter-PCBs repository on GitHub, at the commit this page was made from: the board is Filters.kicad_pcb and its schematic Filters.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Filters design in my own project?
Its repository states no licence, so its author keeps all rights: ask OregonIons before reusing the design.
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