
Screen supply and regulator
thorpej/Electronics
thorpej's electronics projects repository. Tube audio, other tube stuff, and stuff with computers in it.
The STP18N55M5 is a MOSFET made by STMicroelectronics in a TO-220 package with 3 pins. -55℃~+150℃ 1 N-channel 1.26nF 110W 16A 192mΩ@10V 3.6pF 31nC@10V 42pF 550V 5V N-Channel TO-220 MOSFETs ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NMOS_1G_2D_3S, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2688573). 1 open-source board in 1 repository on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | G | Input |
| 2 | D | Passive |
| 3 | S | Passive |

thorpej/Electronics
thorpej's electronics projects repository. Tube audio, other tube stuff, and stuff with computers in it.
<iframe src="https://pcbkit.io/embed/parts/st/STP18N55M5" title="STP18N55M5 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/st/STP18N55M5.jpg" alt="STP18N55M5" width="1200" height="900">[](https://pcbkit.io/parts/st/STP18N55M5)Yes. The symbol is Pinmap_Generic:Q_NMOS_1G_2D_3S and the footprint EasyEDA_Cloud:TO-220-3_L10.0-W4.5-P2.54-L-1, both drawn on this page. PCBKit places them on a board for you when you design with it.
TO-220, with 3 pins. Its footprint is drawn on this page.
STMicroelectronics publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C2688573, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the STP34NM60N by STMicroelectronics, the NCE65T180 by Wuxi NCE Power Semiconductor, the IPP60R190C6 by Infineon Technologies and the IXFP34N65X2 by Littelfuse/IXYS. Check their datasheets: a part that fits the footprint may still differ in its ratings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.