TMP126NDCKR Texas Instruments Integrated Circuit (SOT23 (6-Pin)) In Stock
TMP126NDCKR is a high-accuracy SPI digital temperature sensor from Texas Instruments offering ±0.25 °C accuracy and 14-bit resolution up to 175 °C operation. It features CRC error checking and a slew-rate alert output in a 6-pin SOT-23 package measuring 2 mm × 1.25 mm. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- TMP126NDCKR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7379(MOQ 100)
- Temp Range
- -55.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ±0.25 °C typical accuracy with 14-bit resolution supporting precise thermal monitoring up to 175 °C
- Integrated CRC and slew-rate alert output enabling fault-safe temperature reporting in safety-critical systems
- Ultra-compact 6-pin SOT-23 package (2 mm × 1.25 mm) with SPI interface for easy integration in space-constrained designs
Applications
TMP126NDCKR is used in motor drives, industrial inverters, and power modules where junction or heatsink temperature must be tracked with ±0.25 °C accuracy up to 175 °C to trigger protection thresholds and thermal derating algorithms. Its slew-rate alert output lets a host microcontroller respond to rapid temperature excursions faster than polling, making it valuable in battery management systems and server thermal management circuits. The device's SPI interface and CRC error detection also suit it for safety-relevant medical and automotive sensor nodes requiring reliable digital temperature readout.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Accuracy-Max (Cel) | 0.8Cel |
| Body Breadth | 1.25mm |
| Body Height | 0.9mm |
| Body Length or Diameter | 2mm |
| Housing | PLASTIC |
| JESD-609 Code | e4 |
| Mounting Feature | SURFACE MOUNT |
| Number of Bits | 14 |
| Operating Current-Max | 0.0012mA |
| Output Interface Type | 3-WIRE INTERFACE |
| Package Equivalence Code | TSSOP6,.08 |
| Package Shape/Style | RECTANGULAR |
| Sensors/Transducers Type | TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.62V |
| Surface Mount | YES |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Termination Type | SOLDER |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What accuracy and resolution does TMP126NDCKR achieve, and up to what temperature does it operate?
TMP126NDCKR offers ±0.25 °C typical accuracy with 14-bit resolution, providing approximately 0.03125 °C per LSB, and is rated for continuous operation up to 175 °C junction temperature, making it well suited for hot-side thermal monitoring in power electronics.
How does TMP126NDCKR's slew-rate alert differ from a conventional threshold alert in thermal protection circuits?
A conventional threshold alert triggers only after temperature crosses a set limit; TMP126NDCKR's slew-rate alert fires when the rate of temperature rise exceeds a programmed slope, giving the host controller an early warning typically 5 °C to 10 °C before the absolute limit is reached, enabling proactive current reduction rather than hard shutdown.
What SPI interface speed does TMP126NDCKR support, and does it include error detection?
TMP126NDCKR communicates over SPI at up to 10 MHz and includes a built-in CRC-8 checksum on the temperature data frame, allowing the host MCU to verify data integrity across noisy board environments without adding external error-detection logic.
For a 48 V GaN power stage requiring temperature sensing at the FET case, why is TMP126NDCKR preferred over an NTC thermistor?
TMP126NDCKR delivers a calibrated ±0.25 °C digital reading without the nonlinearity, self-heating offset, and 5 % to 10 % component tolerance that affect NTC thermistors; its 14-bit SPI output eliminates the ADC channel and linearization table the MCU would otherwise need, reducing firmware complexity in 48 V GaN converter designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.9379 | $93.79 |
| 500+ | $0.8531 | $426.54 |
| 1000+ | $0.8216 | $821.55 |
| 3000+ | $0.7769 | $2330.55 |
| 6000+ | $0.7517 | $4509.90 |
| 9000+ | $0.7379 | $6641.01 |
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