# DS18B20T

**XBLW** · Temperature Sensors · TO-92

DS18B20T from XBLW, 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 | GND | power_in | Ground; under parasite-power mode VDD must be floated, not tied to ground. |
| 2 | DQ | bidirectional | Data input/output pin for the 1-Wire bus, pulled up to Vpu (2.6V~5.5V) through a 3kΩ resistor in the block diagram. |
| 3 | VDD | power_in | Power supply pin, 2.6V to 5.5V operating range (absolute maximum 6V); must be left floating, not grounded, in parasite-power mode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XBLW |
| Package | TO-92 |
| Category | Sensors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `DS18B20T`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `ds18b20t-etched.step` / `ds18b20t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ds18b20t.step` / `ds18b20t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XBLW datasheet](docs/ds18b20t-datasheet.pdf) (17 pp, sha256 `e613d32f437addec`, retrieved 2026-10-17, 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/ds18b20t-datasheet.pdf)