
Overview
The AS3423B is a MOSFET made by FMS in a SOT-23-3L package with 3 pins. -55℃~+150℃ 1 P-Channel 1.5V 1W 20V 3A 500pF 90mΩ@4.5V SOT-23-3L MOSFETs ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_PMOS_1G_2S_3D, from PCBKit's generic symbols) and its footprint (Package_TO_SOT_SMD:SOT-23-3, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C341542).
Symbol
Footprint
Parameters
11- Current - Continuous Drain(Id)
- 3A
- Drain to Source Voltage
- 20V
- Gate Threshold Voltage (Vgs(th))
- 1.5V
- Input Capacitance(Ciss)
- 500pF
- Number
- 1 P-Channel
- Operating Temperature
- -55℃~+150℃
- Output Capacitance(Coss)
- 100pF
- Pd - Power Dissipation
- 1W
- RDS(on)
- 90mΩ@4.5V
- Type
- P-Channel
- Vgs
- ±10V
Order codes
1- AS3423BLCSC C341542
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/fms/AS3423B" title="AS3423B in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/fms/AS3423B.jpg" alt="AS3423B" width="1200" height="900">[](https://pcbkit.io/parts/fms/AS3423B)Questions
Is there a KiCad symbol and footprint for the AS3423B?
Yes. The symbol is Pinmap_Generic:Q_PMOS_1G_2S_3D and the footprint Package_TO_SOT_SMD:SOT-23-3, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the AS3423B?
SOT-23-3L, with 3 pins. Its footprint is drawn on this page.
Where is the AS3423B datasheet?
FMS publishes it: the Datasheet link on this page opens it.
Where can I order the AS3423B?
JLCPCB lists it as part C341542, with 0 in stock; the sellers' links on this page open their listings.
What can replace the AS3423B?
Parts like it in the library: the SI2301 by YONGYUTAI, the AO3400A by ElecSuper, the AO3400-HXY by HXY MOSFET and the AP2317A by ALLPOWER. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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