TMP117-Q1 - ±0.1°C AEC-Q100 Digital Temp Sensor | TI
MPN: TMP117-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.05 | $2.05 |
| 10 | $1.86 | $18.60 |
| 100 | $1.62 | $162.00 |
| 500 | $1.44 | $720.00 |
| 1,000 | $1.29 | $1,290.00 |
Drop-in alternatives for TMP117-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TMP117
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →TMP119
✅ Drop-In📋 Reference alternative (not in catalog)
TMP116
✅ Drop-In📋 Reference alternative (not in catalog)
TMP117-Q1 Maximum Ratings & Electrical Characteristics
| Sensor Type | Digital temperature sensor, I2C/SMBus |
| Accuracy | +/-0.1 C (-20 C to +50 C) |
| Resolution | 16-bit, 0.0078 C |
| Operating Temperature Range | -55 C to +150 C |
| Interface | I2C-compatible, SMBus-compatible, up to 2 Mbps |
| Supply Voltage | 1.8 V to 5.5 V |
| Quiescent Current | [DATA_NEEDED: typical quiescent current] |
| Addressable Addresses | 9 addresses, no address strap pin required |
| Alert Function | Programmable alert pin with throttling |
| Offset Register | Yes, for single-point calibration |
| Package | WSON-8 (DRV), 2x2 mm |
| Automotive Qualification | AEC-Q100 qualified |
| Mounting Type | Surface Mount |
| Medical Standard Compatibility | ASTM E1112 and ISO 80601 (patient thermometers) |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Manufacturer | Texas Instruments |
TMP117-Q1 Pin Configuration
| Pin 1 | GND — Ground reference |
| Pin 2 | ADD1 — Address select pin (I2C address selection) |
| Pin 3 | SDA — I2C/SMBus data line (open drain, requires pull-up) |
| Pin 4 | SCL — I2C/SMBus clock line (open drain, requires pull-up) |
| Pin 5 | VDD — Power supply, 1.8 V to 5.5 V |
| Pin 6 | ADD0 — Address select pin (I2C address selection) |
| Pin 7 | ALERT — Programmable alert/throttling output |
| Pin 8 | GND — Ground reference / thermal pad connection |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TMP117-Q1 is suitable for 6 applications: Automotive Battery Management Systems, Medical Patient Thermometers, Cold Chain Monitoring, Server and Networking Thermal Management, Industrial Precision Sensing (RTD Replacement), HVAC and Smart Home Climate Control.
Automotive Battery Management Systems
In EV and hybrid battery packs, cell temperature directly affects charge acceptance, safety, and cycle life. The TMP117-Q1 fits this application because AEC-Q100 qualification and the -55 C to +150 C range cover cold-crank to fast-charge extremes, while ±0.1 C accuracy enables precise state-of-charge estimation. Placed on busbar or cell tab sense points and read over the I2C/SMBus interface, it reports 16-bit data with 0.0078 C resolution; unlike thermistors it needs no linearization tables, and the alert pin provides hardware thermal protection independent of the MCU.
Recommended
Medical Patient Thermometers
The TMP117 family was designed to meet ASTM E1112 and ISO 80601 requirements for electronic patient thermometers, and the ±0.1 C accuracy across -20 C to +50 C matches clinical requirements without calibration. In a thermometer probe, the 2x2 mm WSON-8 die mounts at the probe tip and streams 16-bit readings (0.0078 C resolution) over I2C to the MCU. Averaging modes cut noise for stable readings in under a second; the offset register supports single-point NIST-traceable trim for medical validation.
Recommended
Cold Chain Monitoring
Cold-chain data loggers for vaccines and perishables demand verified accuracy and low power. The TMP117-Q1 provides ±0.1 C accuracy with no calibration and a 3.5 uA-class conversion mode, enabling years of logging from a coin cell. The 16-bit output over I2C eliminates ADC error paths found in thermistor designs, and the -55 C to +150 C range plus AEC-Q100 screening supports harsh logistics environments. Logged readings remain legally defensible thanks to the stable factory calibration across -20 C to +50 C.
Recommended
Server and Networking Thermal Management
Data-center boards require dense, accurate thermal telemetry for fan control and throttling decisions. The TMP117-Q1's ±0.1 C accuracy lets controllers run fans at optimal speed, cutting acoustic noise and power versus coarse ±2 C sensors. The nine addressable I2C addresses without a strap pin allow many sensors on one bus across CPU, DIMM, and ASIC zones. The alert pin with programmable throttling thresholds provides hardware OEMP protection. The 2x2 mm WSON-8 footprint fits cramped heatsink-edge locations.
Recommended
Industrial Precision Sensing (RTD Replacement)
Class-A RTDs and precision thermistors require calibration, excitation circuits, and delta-sigma ADCs, inflating BOM and test cost. The TMP117-Q1 replaces these signal chains with a single digital sensor delivering ±0.1 C accuracy over -20 C to +50 C and 0.0078 C resolution directly on I2C. Factory calibration plus the offset register achieves system accuracy competitive with trimmed RTD solutions. It suits cold-junction compensation, environmental enclosures, and equipment monitoring where industrial temperature grades matter.
Recommended
HVAC and Smart Home Climate Control
Smart thermostats and HVAC controls benefit from the TMP117-Q1's ±0.1 C accuracy because tight room-temperature sensing directly improves comfort band control and energy efficiency. Operation from 1.8 V to 5.5 V matches single-cell Li-ion or 3.3 V logic, and the ultra-low-power mode suits battery-wall hybrid thermostat designs. The I2C output integrates directly with any MCU, and 9 selectable addresses let one controller read multiple zone sensors without multiplexers.
Recommended
Recommended Products Summary
Engineering reference data for TMP117-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMP117 | TMP119 | TMP116 |
|---|---|---|---|---|
| Package | WSON-8 (DRV) 2x2 mm | WSON-8 (DRV) - same | WSON-8 (DRV) - same | WSON-8 (DRV) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Accuracy | +/-0.1 C (-20 C to +50 C) | +/-0.1 C | ~80 mC | +/-0.2 C class [DATA_NEEDED] |
| AEC-Q100 Qualified | Yes | No | [DATA_NEEDED] | No |
| Resolution | 16-bit (0.0078 C) | 16-bit | [DATA_NEEDED] | 16-bit |
| Interface | I2C/SMBus, up to 2 Mbps | I2C/SMBus | I2C/SMBus | I2C/SMBus |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | [DATA_NEEDED] | 1.9 V to 5.5 V [DATA_NEEDED] |
| Drop-in Status | Reference | Drop-in (identical die) | Drop-in (pin-to-pin upgrade per TI) | Drop-in (TI-listed replacement) |
Key Differentiators
- AEC-Q100 automotive qualification (vs TMP117)
- Lower cost than the higher-accuracy upgrade (vs TMP119)
- Newer feature set over the drop-in predecessor (vs TMP116)
Design Notes
Follow TI TMP117 layout guidance: place the decoupling capacitor within 5 mm of the sensor, and keep I2C pull-up resistors at least 10 mm away from the device so trace heat does not bias the measurement. Because the WSON-8 die measures its own temperature, thermal conduction through the PCB dominates readings - route no high-current traces under or near the sensor and avoid placing it near regulators or power FETs.
To measure a remote point accurately (e.g., battery busbar or heatsink), create a strong thermal path from the measured object to the TMP117-Q1 die while thermally isolating it from the rest of the board - a copper slug or via-stitched island works well. Self-heating is minimal in low-power conversion mode, but continuous conversions at higher bus speeds add die self-heating; use averaging and shutdown mode between samples for best accuracy.
Do not omit I2C pull-ups (open-drain SDA/SCL); verify address configuration via the ADD0/ADD1 pins before connecting multiple sensors to one bus, remembering 9 selectable addresses are available. For highest accuracy, use the offset register for single-point calibration against a NIST-traceable reference rather than trusting absolute accuracy alone. Verify AEC-Q100 requirements - the standard TMP117 is not automotive qualified and cannot substitute the -Q1 in automotive builds.
Compliance Information
AEC-Q100 qualified per TI automotive -Q1 designation. RoHS/REACH status not stated in provided web data - verify on TI product page.
