# Mean Well N7812-1PV

Non-isolated step-down switching regulator module, 12 V 1 A output, 16-36 V input, SIP-3 vertical (PV).

| | |
|---|---|
| Manufacturer | Mean Well |
| MPN | N7812-1PV |
| Category | power (DC/DC switching regulator module (78xx replacement)) |
| Package | SIP-3 vertical open frame, 2.54 mm pitch, 10.5 x 7.5 x 16 mm |
| DigiKey | [1866-N7812-1PV-ND](https://www.digikey.com/en/products/detail/mean-well-usa-inc/N7812-1PV/22119034) |
| Mouser | [709-N7812-1PV](https://www.mouser.com/ProductDetail/709-N7812-1PV) |
| Datasheet | [N78-SPEC.PDF](https://www.meanwell.com/Upload/PDF/N78/N78-SPEC.PDF) |

Distributor numbers and stock from the LEDster-TI BOM, checked 2026-11-02: DigiKey 1866-N7812-1PV-ND (stock 18), Mouser 709-N7812-1PV (stock 528), LCSC none (stock n/a).

## Files

- `n7812-1pv.kicad_mod` footprint (KiCad)
- `n7812-1pv.kicad_sym` symbol (KiCad)
- `n7812-1pv.step` 3D model (STEP, Z-up, envelope seated on z = 0, pins below the board, origin = pin 1)
- `n7812-1pv.lbr` Fusion / EAGLE library part (adom-lbr from the files above with this page's metadata; no embedded 3D, bind the STEP)

## Provenance

- `n7812-1pv.kicad_mod`: pads (THT, drill 1.0 / dia 1.5 mm, pad 1 square, 2.54 mm pitch, pin 1 at the origin, pins 2 and 3 toward -x), silkscreen and body outline copied exactly from the EAGLE package `N78121PV` in the LEDster-TI board (`survey/LEDster-TI.brd`, sha256/16 d805b7a21df47b82), EAGLE y-up converted to KiCad y-down. The 1 mm larger outline on EAGLE layer 51 became the courtyard. The 1.0 mm drill matches the Mean Well recommended hole (Ø1.0 +0.2/-0, datasheet p.4).
- `n7812-1pv.step`: AI-created from the Mean Well N78 datasheet (N78-SPEC, file date 2024-08-02, https://www.meanwell.com/Upload/PDF/N78/N78-SPEC.PDF, sha256/16 fd905376983fc0f6) p.4 "Mechanical Specification, PV type" and the p.3 "open frame size 10.5*7.5*16mm". Mean Well publishes no STEP that could be fetched here. Envelope model: one box 10.5 (W) x 7.5 (max depth) x 16.0 (H) mm, centred on the pin row in x, with the pin centre 5.48 mm from the back (PCB) face (side view: 5.80 mm to the pin edge, 0.64 mm pin) and 2.02 mm from the component-side envelope; three 0.64 x 0.64 mm pins 5.08 mm below the seating plane. Written directly in the footprint frame by a small B-rep box writer (adom boxstep.py) and checked on the step2glb OCCT service. Not a manufacturer model: the real part is an open-frame PCB with an inductor, so the box is a keep-out envelope.
- Upstream terms: KiCad symbol: KiCad official library (gitlab.com/kicad/libraries/kicad-footprints, kicad-packages3D and kicad-symbols, master, fetched 2026-11-02). License: CC-BY-SA 4.0 with the KiCad libraries exception (using these files in a design, and distributing the design or its manufacturing output, does not require the design to be licensed under CC-BY-SA).
- `n7812-1pv.kicad_sym`: KiCad `Regulator_Linear:L7812` (extends `L7805`, resolved) used as a generic 3-pin regulator symbol: pins 1 VI, 2 GND, 3 VO (renamed from IN / OUT), renamed to the MPN. Mean Well pinout (+output use, p.4): 1 +Vin, 2 GND, 3 +Vout.

## Notes

- DIFFERENCE: the EAGLE package outline puts the module 1.0 mm in front of the pin row and 6.5 mm behind it; the datasheet side view (5.80 mm from the back face to the pin edge, 7.50 mm max depth) gives 2.02 mm / 5.48 mm. The STEP follows the datasheet; the footprint silk/fab/courtyard follow the EAGLE package (as instructed). The datasheet top-view grid sketch is closer to the EAGLE reading, so the true envelope is uncertain by about 1 mm in depth: leave that margin in the case.

## License

Adom-authored content CC-BY-4.0; third-party files keep their upstream terms (see `LICENSE`).