# TMP411BQDGKRQ1

**Texas Instruments** · Temperature Sensors · VSSOP-8-0.65mm

TMP411BQDGKRQ1 from Texas Instruments, in a VSSOP-8-0.65mm. 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 | V+ | power_in | Positive supply, 2.7 V to 5.5 V for the TMP411-Q1 (recommended operating range 2.7 V to 5.5 V, typical 3.3 V). |
| 2 | D+ | input | Analog input connected to the positive terminal of the remote temperature sensor (diode-connected or transistor-connected BJT); absolute maximum for pins 2 and 3 is -0.5 V to (V+) + 0.5 V on the older die and -0.5 V to 2 V on the newer die. |
| 3 | D− | input | Analog input connected to the negative terminal of the remote temperature sensor; absolute maximum for pins 2 and 3 is -0.5 V to (V+) + 0.5 V on the older die and -0.5 V to 2 V on the newer die. |
| 4 | THERM | output | Active-low open-drain thermal flag that requires a pull-up resistor to V+; input voltage absolute maximum is -0.5 V to 6 V on the newer die and sink current is 6 mA at 0.4 V. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | ALERT/THERM2 | output | Active-low open-drain alert output (reconfigurable as a second THERM flag) that requires a pull-up resistor to V+; sink current is 6 mA at 0.4 V. |
| 7 | SDA | bidirectional | Open-drain SMBus/I2C serial data line that requires a pull-up resistor to V+; input voltage absolute maximum is -0.5 V to 6 V on the newer die. |
| 8 | SCL | input | Open-drain SMBus/I2C serial clock input that requires a pull-up resistor to V+; input voltage absolute maximum is -0.5 V to 6 V on the newer die. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TMP411BQDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files: `tmp411bqdgkrq1-etched.step` / `tmp411bqdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmp411bqdgkrq1.step` / `tmp411bqdgkrq1.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/tmp411-q1) (59 pp, sha256 `7d27d12a62253e80`, retrieved 2026-10-11, 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/tmp411bqdgkrq1-datasheet.pdf)