4 layers160 × 185.5 mm
4 layers45 × 34.8 mm
ClockV2 osc
Raphael-Tibbits/ClockV2Crystal oscilator clock project
- Size
- 45 × 34.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 20
- Pads
- 89
- Tracks, vias
- 98, 174
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 27 Oct 2025
- Updated
- 25 Oct 2026
Overview
ClockV2 osc is an open-source printed circuit board by Raphael-Tibbits, from the Raphael-Tibbits/ClockV2 repository on GitHub. It is a 4-layer board of 45 × 34.8 mm with 28 parts on 20 nets, routed with 98 tracks and 174 vias.
It is built around the LMV358, 74LVC1GX04GV and 1N4148WS, with the IRLR024NTR among its other parts. Its parts include 10 resistors, 8 capacitors, 2 ICs, 2 diodes and 2 connectors. It belongs with the lEDs and displays boards of this library.
Main components
4
LMV358
SOP-8-40℃~+125℃ 10pA 10pA 1MHz 2 2.5V~5.5V 20mA 20nV/√Hz@10kHz 2uV/℃ 40uA 5mV 600V/ms 65dB EMI filtering/RF suppression Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSTECH PUBLICOperational Amplifier
74LVC1GX04GV
SC-74SC-74 Specialty Logic ROHSNexperiaSpecialty Logic
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
IRLR024NTR
TO-252-55℃~+175℃ 1 N-channel 2.3V 21nC@10V 30A 40mΩ@4.5V 44W 60V N-Channel TO-252 MOSFETs ROHSMinosMOSFETs
README
V2_0/README.mdClockV2
Crystal oscilator clock project
This project aims to create a 1s/year accurate clock, this is done with an ovenated crystal oscilator.
There are two versions of the hardware, one with a discrete XO, which can be trimmed; and the other with a TCXO module that cant be trimmed
The hardware is made to be IEEE1101.3 compliant form factor as a 3U x 160 deep eurocard that occoupies 4HP. Mechanical stuff like a front panel is in progress
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 47k | Resistor_SMD:R_0805_2012Metric | R201, R208, R209, R210 |
| 3 | 1k | Resistor_SMD:R_0805_2012Metric | R202, R203, R207 |
| 2 | 10n | Capacitor_SMD:C_0603_1608Metric | C201, C208 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric | C206, C207 |
| 2 | Conn_02x04_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical | J201, J202 |
| 1 | 0.02R | Resistor_SMD:R_2512_6332Metric | R206 |
| 1 | 0.1-2p | Capacitor_SMD:C_Trimmer_Voltronics_JZ | C202 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3266W_Vertical | RV201 |
| 1 | 150p | Capacitor_SMD:C_0603_1608Metric | C203 |
| 1 | 16MHz | Crystal:Crystal_SMD_HC49-SD | Y201 |
| 1 | 1N4148WS | Diode_SMD:D_SOD-323 | D201 |
| 1 | 22p C0G | Capacitor_SMD:C_0805_2012Metric | C205 |
| 1 | 3-30p | Capacitor_SMD:C_Trimmer_Voltronics_JZ | C204 |
| 1 | 470R | Resistor_SMD:R_0805_2012Metric | R205 |
| 1 | 5M | Resistor_SMD:R_0805_2012Metric | R204 |
| 1 | 74LVC1GX04 | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U201 |
| 1 | IRLR024N | PCM_Package_TO_SOT_SMD_AKL:TO-252-2 | Q201 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D202 |
| 1 | LMV358 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U202 |
| 1 | Thermistor_NTC | Resistor_SMD:R_0805_2012Metric | TH201 |
Questions
How big is the ClockV2 osc PCB?
It measures 45 × 34.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ClockV2 osc use?
28 parts, built around the LMV358, 74LVC1GX04GV, 1N4148WS and IRLR024NTR. 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 ClockV2 osc KiCad files?
From the Raphael-Tibbits/ClockV2 repository on GitHub, at the commit this page was made from: the board is V2_0/ClockV2_osc.kicad_pcb and its schematic Clock_Panel/Clock_Panel.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ClockV2 osc design in my own project?
Its repository states no licence, so its author keeps all rights: ask Raphael-Tibbits before reusing the design.
More from Raphael-Tibbits/ClockV2
5- 2 layers160 × 100 mm
- 4 layers160 × 100 mm
- 4 layers61 × 23 mm
- 4 layers45 × 34.8 mm
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