
Overview
The US3DB-HF is a switching Diode made by Comchip in a SMB(DO-214AA) package with 2 pins. -55℃~+150℃ 1V@3A 200V 3A 50ns 5uA@200V SMB(DO-214AA) Switching Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D, from KiCad's library) and its footprint (Diode_SMD:D_SMB, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C17393302).
Symbol
Footprint
Parameters
6- Current - Rectified
- 3A
- Operating Junction Temperature Range
- -55℃~+150℃
- Reverse Leakage Current (Ir)
- 5uA@200V
- Reverse Recovery Time (trr)
- 50ns
- Voltage - DC Reverse(Vr)
- 200V
- Voltage - Forward(Vf@If)
- 1V@3A
Order codes
1- US3DB-HFLCSC C17393302
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
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<iframe src="https://pcbkit.io/embed/parts/comchip/US3DB-HF" title="US3DB-HF in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/comchip/US3DB-HF.jpg" alt="US3DB-HF" width="1200" height="900">[](https://pcbkit.io/parts/comchip/US3DB-HF)Questions
Is there a KiCad symbol and footprint for the US3DB-HF?
Yes. The symbol is Device:D and the footprint Diode_SMD:D_SMB, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the US3DB-HF?
SMB(DO-214AA), with 2 pins. Its footprint is drawn on this page.
Where is the US3DB-HF datasheet?
Comchip publishes it: the Datasheet link on this page opens it.
Where can I order the US3DB-HF?
JLCPCB lists it as part C17393302, with 0 in stock; the sellers' links on this page open their listings.
What can replace the US3DB-HF?
Parts like it in the library: the FR3MB-TP by Micro Commercial Components, the RS3MB by WPMtek, the PU6DBH by Taiwan Semiconductor and the ES3JB by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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