

Overview
The US1KFA is a fast Recovery , High Efficiency Diode made by onsemi in a SOD-123FL package with 2 pins. -55℃~+150℃ 1 Independent 1.7V@1A 1A 5uA@800V 75ns 800V SOD-123FL Fast Recovery / High Efficiency Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123F, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C894759). 3 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
7- Current - Rectified
- 1A
- Diode Configuration
- 1 Independent
- Operating Junction Temperature Range
- -55℃~+150℃
- Reverse Leakage Current (Ir)
- 5uA@800V
- Reverse Recovery Time (trr)
- 75ns
- Voltage - DC Reverse(Vr)
- 800V
- Voltage - Forward(Vf@If)
- 1.7V@1A
Order codes
1- US1KFALCSC C894759
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 3- 2 layers48 × 62 mm

- 2 layers66.8 × 60 mm

- 2 layers66.8 × 60 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/US1KFA" title="US1KFA 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/US1KFA.jpg" alt="US1KFA" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/US1KFA)Questions
Is there a KiCad symbol and footprint for the US1KFA?
Yes. The symbol is Device:D and the footprint Diode_SMD:D_SOD-123F, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the US1KFA?
SOD-123FL, with 2 pins. Its footprint is drawn on this page.
Where is the US1KFA datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the US1KFA?
JLCPCB lists it as part C894759, with 0 in stock; the sellers' links on this page open their listings.
What can replace the US1KFA?
Parts like it in the library: the F7 by GOODWORK, the FR107W by hongjiacheng, the SOD1F7 by MDD and the US1MW by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the US1KFA?
3 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8F7
SOD-123FL-65℃~+150℃ 1 Independent 1.3V@1A 1A 1kV 500ns 5uA@1kV SOD-123FL Fast Recovery / High Efficiency Diodes ROHSGOODWORKFast Recovery / High Efficiency DiodesFR107W
SOD-123FLFast Recovery / High Efficiency DiodeshongjiachengSOD1F7
SOD-123FL-50℃~+150℃ 1 Independent 1.3V@1A 1A 1kV 30A 500ns 5uA@1kV SOD-123FL Fast Recovery / High Efficiency Diodes ROHSMDDFast Recovery / High Efficiency DiodesUS1MW
SOD-123FLFast Recovery / High Efficiency DiodeshongjiachengFR107
SOD-123FL-55℃~+150℃ 1.3V@1A 1A 1kV 30A 500ns 5uA@1kV SOD-123FL Fast Recovery / High Efficiency Diodes ROHSBORNFast Recovery / High Efficiency DiodesFR107
SOD-123FL-55℃~+150℃ 1 Independent 1.3V@1A 1A 1kV 500ns 5uA@1kV SOD-123FL Fast Recovery / High Efficiency Diodes ROHSSlkorFast Recovery / High Efficiency DiodesFR107W
SOD-123F-55℃~+150℃ 1 Independent 1.3V@1A 1A 1kV 30A 500ns 5uA@1kV SOD-123F Fast Recovery / High Efficiency Diodes ROHSShandong Jingdao MicroelectronicsFast Recovery / High Efficiency DiodesUS1MW
SOD-123FL-55℃~+150℃ 1 Independent 1.65V@1A 1A 1kV 30A 5uA@1kV 75ns SOD-123FL Fast Recovery / High Efficiency Diodes ROHSShandong Jingdao MicroelectronicsFast Recovery / High Efficiency Diodes