Xtal filter
About the Xtal filter PCB
Xtal filter is an open source PCB design by F6ITU, published on GitHub. It is a 2-layer board measuring 50 × 25 mm, with 19 components from 6 distinct parts.
By type, the board carries 11 capacitors, 4 crystals, 2 connectors and 2 inductors.
From the project
A simple 4th order 10 MHz xtal filter for Grehack 2018 Workshop
A simple 4th order 10 MHz xtal filter for Grehack 2018 Workshop
A Kicad project for GreHack 2018 workshop
This repository contains a easy to build-easy to reproduce 4th order filter using low cost 10 MHz crystal device in HC49 form factor.
This filter has been designed for educational purpose, and could be the perfect companion for a 10 MHz harmonic-free reference clock (gps-do, ocxo or any kind of digitaly generated square wave RF source)
Xtal filter bill of materials (BOM)
19 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 10M | Crystal_HC49-U-3Pin_Vertical | Y1, Y2, Y3, Y4 |
| 2 | Conn_Coaxial | SMA_EDGE_NRW | J1, J2 |
| 2 | L_Small | C_2220_5650Metric_Pad2.02x5.50mm_HandSolder | L1, L2 |
| 5 | C_Small | C_0805_2012Metric_Pad1.15x1.50mm_HandSolder | C1, C2, C3, C4, C5 |
| 4 | C_Small | C_1210_3225Metric_Pad1.24x2.70mm_HandSolder | C6, C7, C8, C11 |
| 2 | C_Small | C_2220_5650Metric_Pad2.02x5.50mm_HandSolder | C9, C10 |
Xtal filter design files
The KiCad project lives in the F6ITU/Xtal_filter repository on GitHub; these links point at the commit this page was built from.
- Layoutxtal_filter.kicad_pcb
Xtal filter: common questions
How big is the Xtal filter PCB?
The Xtal filter measures 50 × 25 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Xtal filter?
19 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the Xtal filter design files?
From the F6ITU/Xtal_filter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Xtal filter design in my own project?
The repository has no license, so all rights stay with F6ITU. Use it as a reference, and ask the author before reusing the design.