NSI45025AT1G

@@ -0,0 +1,44 @@+# NSI45025AT1G++**onsemi** · LED Drivers · SOD-123++NSI45025AT1G from onsemi, in a SOD-123. 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 | K | passive | Cathode of the constant current regulator. Current flows into the anode and out of the cathode; connect to the low-voltage side of the LED string (for high-side driver) or to ground (for low-side driver). Serves as the primary thermal path (junction-to-cathode-lead RψJL as low as 120 °C/W). |+| 2 | A | passive | Anode of the constant current regulator. Connect to the positive supply side; the device regulates current at 25 mA typical (Ireg(SS)) with Vak up to 45 V max, turning on immediately with only ~0.5 V Vak (~25% of regulation). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | SOD-123 |+| Category | LED-drv |+| Pins | 2 |++## Ordering variants++Same part, different packaging or reel option.++- `NSI45025AT1G`+- `NSI45025AT1GNSV45025AT1G`++## CAD (KiCad official)++- Symbol: `NSI45025AT1G`+- Footprint: `Diode_SMD:D_SOD-123`+- 3D model: SOD-123 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/nsi45025at1-d.pdf) (8 pp, sha256 `42ffd5fa98180e40`, retrieved 2026-08-17, tier: manufacturer)+- **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/nsi45025at1g-datasheet.pdf)

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