
Keepsake keychain
ericmcdaniel/wedding-keepsake
The full design files and source code of the RGB LED matrix on a PCB keychain given as a keepsake party favor at my wedding.

The RMCF0603JT120R is a chip Resistor Surface Mount made by Stackpole Electronics (SEI) in a 0603 package with 2 pins. -55℃~+155℃ 100mW 120Ω 75V Thick Film Resistor ±200ppm/℃ ±5% 0603 Chip Resistor - Surface Mount ROHS.
PCBKit's library has its KiCad symbol (Device:R, from KiCad's library) and its footprint (Resistor_SMD:R_0603_1608Metric, from KiCad's library), ready for a KiCad board. 4,211 are in stock at JLCPCB (part C3995226). 4 open-source boards in 2 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | — | Passive |
| 2 | — | Passive |

ericmcdaniel/wedding-keepsake
The full design files and source code of the RGB LED matrix on a PCB keychain given as a keepsake party favor at my wedding.



<iframe src="https://pcbkit.io/embed/parts/stackpole/RMCF0603JT120R" title="RMCF0603JT120R in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/stackpole/RMCF0603JT120R.jpg" alt="RMCF0603JT120R" width="1200" height="900">[](https://pcbkit.io/parts/stackpole/RMCF0603JT120R)Yes. The symbol is Device:R and the footprint Resistor_SMD:R_0603_1608Metric, both drawn on this page. PCBKit places them on a board for you when you design with it.
0603, with 2 pins. Its footprint is drawn on this page.
Stackpole Electronics (SEI) publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C3995226, with 4,211 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the 0603WAF1200 by UNI-ROYAL, the FRC0603F1200TS by FOJAN, the RCA03120RFLF by HKR and the RC0603FR-120RL by YAGEO. Check their datasheets: a part that fits the footprint may still differ in its ratings.
4 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.