FDS8840NZ-VB

@@ -0,0 +1,49 @@+# FDS8840NZ-VB++**VBsemi Elec** · MOSFETs · SO-8++FDS8840NZ-VB from VBsemi Elec, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | S | passive | Source (S) of the N-channel MOSFET. Pins 1, 2, and 3 are internally connected together as the source terminal; carries the load current back to the return path (up to 18 A continuous at TC = 25 °C). |+| 2 | S | passive | Source (S) of the N-channel MOSFET. Tied in parallel with pins 1 and 3 to reduce package resistance and improve current handling. |+| 3 | S | passive | Source (S) of the N-channel MOSFET. Tied in parallel with pins 1 and 2; connect all three source pins together on the PCB. |+| 4 | G | input | Gate (G) of the N-channel MOSFET. High-impedance control input; VGS(th) = 1.0 to 3.0 V, absolute maximum VGS = ±20 V. Drive with 4.5 V or 10 V for full enhancement. |+| 5 | D | passive | Drain (D) of the N-channel MOSFET. Pins 5, 6, 7, and 8 are internally connected together as the drain terminal; VDS max = 40 V. |+| 6 | D | passive | Drain (D) of the N-channel MOSFET. Tied in parallel with pins 5, 7, and 8 to reduce package resistance and improve thermal performance (drain acts as the primary heat-sinking terminal). |+| 7 | D | passive | Drain (D) of the N-channel MOSFET. Tied in parallel with pins 5, 6, and 8; connect all four drain pins together on the PCB with a large copper pour for heat spreading. |+| 8 | D | passive | Drain (D) of the N-channel MOSFET. Tied in parallel with pins 5, 6, and 7 to share the drain current (ID up to 18 A continuous at TC = 25 °C). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | VBsemi Elec |+| Package | SO-8 |+| Category | Transistors/Thyristors |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `FDS8840NZ-VB`++## CAD (KiCad official)++- Symbol: `FDS8840NZ-VB`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SO-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [VBsemi Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603004138855026688) (None pp, sha256 `da6bb2f6e17cb1ec`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/fds8840nz-vb-datasheet.pdf)

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