
Overview
The 7409B is a MOSFET made by TF in a PDFN-8L(3x3) package with 9 pins. -55℃~+150℃ 1 P-Channel 1.6nF 1.7V 10A 14mΩ@10V、25mΩ@4.5V 3.1W 300pF 30V 30nC@10V P-Channel PDFN-8L(3x3) MOSFETs ROHS.
PCBKit's library has its KiCad symbol (Pinmap_Generic:Q_PMOS_1S_2S_3S_4G_5D_6D_7D_8D_9D, from PCBKit's generic symbols) and its footprint (EasyEDA_Cloud:PDFN-8_L3.3-W3.3-P0.65-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2681873).
Symbol
Footprint
Parameters
11- Current - Continuous Drain(Id)
- 10A
- Drain to Source Voltage
- 30V
- Gate Charge(Qg)
- 30nC@10V
- Gate Threshold Voltage (Vgs(th))
- 1.7V@250uA
- Input Capacitance(Ciss)
- 1.6nF@15V
- Number
- 1 P-Channel
- Operating Temperature
- -55℃~+150℃
- Pd - Power Dissipation
- 3.1W
- RDS(on)
- 14mΩ@10V;25mΩ@4.5V
- Reverse Transfer Capacitance (Crss@Vds)
- 300pF@15V
- Type
- P-Channel
Order codes
1- 7409BLCSC C2681873
Pinout
9| Pin | Name | Type |
|---|---|---|
| 1 | S | Passive |
| 2 | S | Passive |
| 3 | S | Passive |
| 4 | G | Input |
| 5 | D | Passive |
| 6 | D | Passive |
| 7 | D | Passive |
| 8 | D | Passive |
| 9 | D | Passive |
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<iframe src="https://pcbkit.io/embed/parts/tf/7409B" title="7409B 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/7409B.jpg" alt="7409B" width="1200" height="900">[](https://pcbkit.io/parts/tf/7409B)Questions
Is there a KiCad symbol and footprint for the 7409B?
Yes. The symbol is Pinmap_Generic:Q_PMOS_1S_2S_3S_4G_5D_6D_7D_8D_9D and the footprint EasyEDA_Cloud:PDFN-8_L3.3-W3.3-P0.65-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 7409B?
PDFN-8L(3x3), with 9 pins. Its footprint is drawn on this page.
Where is the 7409B datasheet?
TF publishes it: the Datasheet link on this page opens it.
Where can I order the 7409B?
JLCPCB lists it as part C2681873, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 7409B?
Parts like it in the library: the SM3331PSQGC-TRG by Sinopower Semicon, the SM3419NHQAC-TRG by Sinopower Semicon, the SM3439NHQAC-TRG by Sinopower Semicon and the 7506 by TF. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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