

Overview
The BCR421UFDQ is a LED Driver made by Diodes Incorporated in a UDFN-6-EP(2x2) package with 7 pins. -55℃~+150℃ 1 10% 350mA 40V External Over-Temperature Protection (OTP) PWM UDFN-6-EP(2x2) LED Drivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:BCR421UFDQ-7, from EasyEDA) and its footprint (EasyEDA_Cloud:U-DFN2020-6_L2.0-W2.0-P0.65-BL-EP, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2678624). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
9- Constant Current Accuracy
- 10%
- Dimming
- PWM
- Features
- Over-Temperature Protection (OTP)
- Number of Channels
- 1
- Operating temperature
- -55℃~+150℃
- Output Current
- 350mA
- Output Voltage
- 40V
- Switch Tube (Built-In/External)
- External
- Type
- DC-DC
Order codes
1- BCR421UFDQ-7LCSC C2678624
Pinout
7| Pin | Name | Type |
|---|---|---|
| 1 | N/C | Unspecified |
| 2 | OUT | Unspecified |
| 3 | N/C | Unspecified |
| 4 | EN | Unspecified |
| 5 | Rext | Unspecified |
| 6 | GND | Unspecified |
| 7 | OUT | Unspecified |
Open-source boards using it
All 2- 2 layers16 × 35.2 mm

- 2 layers312.7 × 85.8 mm

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<iframe src="https://pcbkit.io/embed/parts/diodes/BCR421UFDQ" title="BCR421UFDQ in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/diodes/BCR421UFDQ.jpg" alt="BCR421UFDQ" width="1200" height="900">[](https://pcbkit.io/parts/diodes/BCR421UFDQ)Questions
Is there a KiCad symbol and footprint for the BCR421UFDQ?
Yes. The symbol is EasyEDA_Cloud:BCR421UFDQ-7 and the footprint EasyEDA_Cloud:U-DFN2020-6_L2.0-W2.0-P0.65-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BCR421UFDQ?
UDFN-6-EP(2x2), with 7 pins. Its footprint is drawn on this page.
Where is the BCR421UFDQ datasheet?
Diodes Incorporated publishes it: the Datasheet link on this page opens it.
Where can I order the BCR421UFDQ?
JLCPCB lists it as part C2678624, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BCR421UFDQ?
Parts like it in the library: the BCR420UFDQ by Diodes Incorporated, the BCR421UW6Q by Diodes Incorporated, the BCR420UW6 by Diodes Incorporated and the LM3404MRX by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BCR421UFDQ?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
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