

Overview
The MMBF5103 is a RF Switche made by onsemi in a SOT-23-3L package with 3 pins. -55℃~+150℃ SOT-23-3L RF Switches ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:MMBFJ108, from EasyEDA) and its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C463551). 3 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
1- operating temperature
- -55℃~+150℃
Order codes
1- MMBF5103LCSC C463551
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | D | Unspecified |
| 2 | S | Unspecified |
| 3 | G | Unspecified |
Open-source boards using it
All 3- 2 layers32 × 68.5 mm

- 2 layers30 × 62 mm

Compressor
cuteboy0323/1590A
These are not at all useful, but having done guitar pedal board kit builds, I decided I should try to make something from scratch.
36 partsGPL-2.0 - 2 layers30 × 55 mm

Octaver
cuteboy0323/1590A
These are not at all useful, but having done guitar pedal board kit builds, I decided I should try to make something from scratch.
25 partsGPL-2.0
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<iframe src="https://pcbkit.io/embed/parts/onsemi/MMBF5103" title="MMBF5103 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/MMBF5103.jpg" alt="MMBF5103" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/MMBF5103)Questions
Is there a KiCad symbol and footprint for the MMBF5103?
Yes. The symbol is EasyEDA_Cloud:MMBFJ108 and the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the MMBF5103?
SOT-23-3L, with 3 pins. Its footprint is drawn on this page.
Where is the MMBF5103 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the MMBF5103?
JLCPCB lists it as part C463551, with 0 in stock; the sellers' links on this page open their listings.
What can replace the MMBF5103?
Parts like it in the library: the MMBFJ108 by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the MMBF5103?
3 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.