# TX1812CWBA-F01

**TCWIN** · RGB LEDs(Built-In IC) · SMD5050-4P

TX1812CWBA-F01 from TCWIN, in a SMD5050-4P. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.


::adom-states{src="/adom/tx1812cwba-f01/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Logic supply pin, with the absolute maximum logic supply voltage stated as 3.5 to 5.5 V. |
| 2 | DO | output | Data output that retransmits the received control data to the next cascaded pixel, with a typical DO source current (IDOH) of 15 mA and sink current (IDOL) of 30 mA. |
| 3 | GND | power_in | Common ground for both signal and power, as stated in the pin function table. |
| 4 | DIN | input | Control data input, with high-level input VIH of 0.7VDD to VDD, low-level input VIL of 0 to 0.3VDD, and logic input voltage rated -0.5 to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TCWIN |
| Package | SMD5050-4P |
| Category | Optoelectronics |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `TX1812CWBA-F01`
- Footprint: `LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm`
- 3D model: SMD5050-4P (KiCad packages3D, STEP)
- 3D model files: `tx1812cwba-f01-etched.step` / `tx1812cwba-f01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tx1812cwba-f01.step` / `tx1812cwba-f01.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TCWIN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603373436127223808) (14 pp, sha256 `7e56f98ff89fc2e9`, retrieved 2026-10-07, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tx1812cwba-f01-datasheet.pdf)