# TMP303BDRLR

**Texas Instruments** · Thermostat Switches · SOT-563

TMP303BDRLR from Texas Instruments, in a SOT-563. 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 | HYSTSET0 | input | Digital input that sets the thermal hysteresis together with HYSTSET1; tie to GND or VS per Table 1 (GND/GND 1°C, GND/VS 2°C, VS/GND 5°C, VS/VS 10°C). |
| 2 | GND | power_in | Ground reference for the device supply, which must be specified between VS and GND in the range 1.4 V to 3.6 V. |
| 3 | OUT | output | Active-high push-pull output that goes high when the trip point is crossed and does not require a pullup resistor to VS; the absolute maximum output current is -55 mA to 8 mA. |
| 4 | SOH | input | Set output high pin with an internal 100 kΩ pulldown to ground; when pulled high it forces OUT high regardless of temperature, and when grounded or floating it has no effect. |
| 5 | VS | power_in | Power supply input, specified from 1.4 V to 3.6 V (absolute maximum VS − GND is 4 V). |
| 6 | HYSTSET1 | input | Digital input that sets the thermal hysteresis together with HYSTSET0; tie to GND or VS per Table 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-563 |
| Category | Sensors |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TMP303BDRLR`
- Footprint: `Package_TO_SOT_SMD:SOT-563`
- 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files: `tmp303bdrlr-etched.step` / `tmp303bdrlr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmp303bdrlr.step` / `tmp303bdrlr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tmp303) (25 pp, sha256 `49900406e93c9481`, retrieved 2026-10-10, 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/tmp303bdrlr-datasheet.pdf)