# CJ78L12-TA

**Changjiang Electronics Tech (CJ)** · Linear Voltage Regulators (LDO) · TO-92-2.54mm

CJ78L12-TA from Changjiang Electronics Tech (CJ), in a TO-92-2.54mm. 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.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | power_out | Regulated 12V output (Vo 11.5V min to 12.5V max at 25°C), maximum output current 0.1A, with a 0.1µF bypass capacitor recommended close to the regulator. |
| 2 | GND | power_in | Ground reference pin, common to the input and output bypass capacitors. |
| 3 | IN | power_in | Unregulated input voltage, absolute maximum 35V, with a 0.33µF bypass capacitor recommended close to the regulator. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjiang Electronics Tech (CJ) |
| Package | TO-92-2.54mm |
| Category | Power Management ICs |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `CJ78L12-TA`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-2.54mm (KiCad packages3D, STEP)
- 3D model files: `cj78l12-ta-etched.step` / `cj78l12-ta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cj78l12-ta.step` / `cj78l12-ta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjiang Electronics Tech (CJ) datasheet](docs/cj78l12-ta-datasheet.pdf) (5 pp, sha256 `f0e0f44257281103`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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/cj78l12-ta-datasheet.pdf)