
FFB3904
onsemiExtended
-55℃~+150℃ 100 200mA 250MHz 300mW 40V NPN SC-88(SC-70-6) Bipolar (BJT) ROHS
- Part id
- onsemi/FFB3904
- Category
- Bipolar (BJT)
- Package
- SC-88(SC-70-6)
- Pins
- 5
- In stock
- 0 at JLCPCB (C3199360)
- Used on
- 1 open-source board
Overview
The FFB3904 is a bipolar made by onsemi in a SC-88(SC-70-6) package with 6 pins. -55℃~+150℃ 100 200mA 250MHz 300mW 40V NPN SC-88(SC-70-6) Bipolar (BJT) ROHS.
PCBKit's library has its KiCad symbol (Transistor_BJT:FFB3904, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-363_SC-70-6, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3199360). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
6| Pin | Name | Type |
|---|---|---|
| 1 | E1 | Passive |
| 2 | B1 | Input |
| 3 | C2 | Passive |
| 4 | E2 | Passive |
| 5 | B2 | Input |
| 6 | C1 | Passive |
Open-source boards using it
1- 4 layers

Parts like it
8BC857BS
SOT-363-55℃~+150℃ 15nA 2 PNP 200MHz 200mA 300 300mW 45V 5V 650mV PNP SOT-363 Bipolar (BJT) ROHSFUXINSEMIBipolar (BJT)BCM857BS
SOT-36315nA 2 PNP 200MHz 200mA 300mW 420 45V 5V 650mV PNP SOT-363 Bipolar (BJT) ROHSFUXINSEMIBipolar (BJT)MMDT5401DW
SOT-363100MHz 150V 2 PNP 300 300mW 500mV 50nA 5V 600mA PNP SOT-363 Bipolar (BJT) ROHSCBIBipolar (BJT)MMDT5401
SOT-363100MHz 150V 2 PNP 300 300mW 500mV 50nA 5V 600mA PNP Standalone SOT-363 Bipolar (BJT) ROHSGOODWORKBipolar (BJT)LMBT5551DW1T1G
SC-88-55℃~+150℃ 150mV 160V 2 NPN 300mW 50nA 600mA 6V 80 NPN SC-88 Bipolar (BJT) ROHSLeshan Radio (LRC)Bipolar (BJT)MMBT5551DW
SOT-363150mV、200mV 160V 2 NPN 300 300MHz 300mW 50nA 600mA 6V NPN SOT-363 Bipolar (BJT) ROHSCBIBipolar (BJT)DSS4240Y
SOT-363-55℃~+150℃ 1 NPN 100mV 100nA 250MHz 2A 300 40V 5V 625mW NPN SOT-363 Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)BC857BDW
SOT-363-55℃~+150℃ 15nA 2 PNP 200MHz 200mA 300mW 400 45V 5V 650mV PNP SOT-363 Bipolar (BJT) ROHSFUXINSEMIBipolar (BJT)
Questions
Is there a KiCad symbol and footprint for the FFB3904?
Yes. The symbol is Transistor_BJT:FFB3904 and the footprint Package_TO_SOT_SMD:SOT-363_SC-70-6, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the FFB3904?
SC-88(SC-70-6), with 6 pins. Its footprint is drawn on this page.
Where is the FFB3904 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the FFB3904?
JLCPCB lists it as part C3199360, with 0 in stock; the sellers' links on this page open their listings.
What can replace the FFB3904?
Parts like it in the library: the BC857BS by FUXINSEMI, the BCM857BS by FUXINSEMI, the MMDT5401DW by CBI and the MMDT5401 by GOODWORK. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the FFB3904?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.