# 78L05 TB

**YFW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92

78L05 TB from YFW, in a TO-92. 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 5 V output (4.8 V min, 5.2 V max at IO = 1 mA to 40 mA) delivering up to 100 mA, with a 0.1 µF output capacitor used in the test circuit. |
| 2 | Gnd | power_in | Ground reference pin shared by input and output. |
| 3 | In | power_in | Unregulated input voltage, absolute maximum 30 V for the 3.3 V to 10 V output versions, with a 0.33 µF input capacitor used in the test circuit. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | TO-92 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `78L05 TB`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `78l05-tb-etched.step` / `78l05-tb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `78l05-tb.step` / `78l05-tb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YFW datasheet](docs/78l05-tb-datasheet.pdf) (8 pp, sha256 `e03fa34e0f02e679`, retrieved 2026-10-19, 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/78l05-tb-datasheet.pdf)