
Overview
The 3420 is a MOSFET made by TF in a SOT-23 package with 3 pins. 1 N-channel 1.25W 16mΩ@10V 20V 6A 742pF@15V 78pF@15V 800mV@250uA 9nC@4.5V N-Channel SOT-23 MOSFETs ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_NMOS_1G_2S_3D, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2681863).
Symbol
Footprint
Parameters
10- Current - Continuous Drain(Id)
- 6A
- Drain to Source Voltage
- 20V
- Gate Charge(Qg)
- 9nC@4.5V
- Gate Threshold Voltage (Vgs(th))
- 800mV@250uA
- Input Capacitance(Ciss)
- 742pF@15V
- Number
- One N-channel
- Pd - Power Dissipation
- 1.25W
- RDS(on)
- 16mΩ@10V
- Reverse Transfer Capacitance (Crss@Vds)
- 78pF@15V
- Type
- N-Channel
Order codes
1- 3420LCSC C2681863
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | G | Input |
| 2 | S | Passive |
| 3 | D | Passive |
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<iframe src="https://pcbkit.io/embed/parts/tf/3420" title="3420 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/tf/3420.jpg" alt="3420" width="1200" height="900">[](https://pcbkit.io/parts/tf/3420)Questions
Is there a KiCad symbol and footprint for the 3420?
Yes. The symbol is Pinmap_Generic:Q_NMOS_1G_2S_3D and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 3420?
SOT-23, with 3 pins. Its footprint is drawn on this page.
Where is the 3420 datasheet?
TF publishes it: the Datasheet link on this page opens it.
Where can I order the 3420?
JLCPCB lists it as part C2681863, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 3420?
Parts like it in the library: the TF2300 by TF, the CMN3400M by Cmos, the SI2323CDS by Vishay Intertechnology and the SM2320NSAC-TRG by Sinopower Semicon. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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