TMP126DCKR Texas Instruments Integrated Circuit (SOT23 (6-Pin)) In Stock
The TMP126DCKR is a high-accuracy SPI temperature sensor from Texas Instruments rated up to 175°C operation with 0.3°C maximum accuracy. It delivers 14-bit resolution, built-in CRC error detection, and a slew-rate alert output for fast thermal event detection in a 6-pin SOT-23 package (2 mm × 1.25 mm). Available on tape and reel with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- TMP126DCKR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4900(MOQ 100)
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.3°C maximum accuracy with 14-bit resolution across a measurement range including up to 175°C, enabling precise thermal monitoring for industrial and high-temperature embedded systems
- Integrated CRC error checking on the SPI interface prevents data corruption in electrically noisy PCB environments near switching power stages or motor drives
- Programmable slew-rate alert output notifies the host MCU when temperature change rate exceeds threshold, enabling pre-fault thermal protection before absolute limits are reached
Applications
The TMP126DCKR is suited for industrial embedded systems, server board thermal management, and power converter monitoring where reliable temperature sensing up to 175°C with SPI communication and 14-bit resolution is required. Its slew-rate alert is particularly valuable in power module and motor drive applications where detecting fast thermal ramps allows protective action before an over-temperature shutdown occurs. The miniature 6-pin SOT-23 package enables placement close to heat-generating components such as FETs, inductors, and transformer cores for accurate localized thermal monitoring.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Accuracy-Max (Cel) | 0.3Cel |
| 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 maximum temperature can the TMP126DCKR measure, and what accuracy does it guarantee?
The TMP126DCKR supports operation up to 175°C and guarantees a maximum accuracy of 0.3°C. This combination of high-temperature range and tight accuracy is critical for industrial power converters, motor drives, and server power supplies where standard sensors limited to 125°C or with 1°C accuracy are insufficient for reliable thermal management.
How does the TMP126DCKR's slew-rate alert output improve thermal protection compared to a simple over-temperature threshold?
A simple over-temperature threshold only triggers after temperature has already exceeded a set point, which can be too late to prevent damage in fast thermal events. The slew-rate alert of the TMP126DCKR fires whenever temperature rises faster than a configured rate in degrees Celsius per second, allowing the host MCU to take protective action such as reducing load current tens of milliseconds before the absolute trip threshold is reached.
What is the resolution of the TMP126DCKR's temperature measurement output?
The TMP126DCKR provides a 14-bit digital output over SPI, which corresponds to a resolution of approximately 0.03°C per LSB. This fine resolution supports gradient detection and tight closed-loop thermal control in precision heating, cooling, and test systems where coarser 12-bit or 8-bit sensors would introduce quantization errors that degrade regulation performance.
How does the TMP126DCKR compare to the automotive-qualified TMP126EDCKRQ1 for non-automotive industrial designs?
The TMP126DCKR is the commercial/industrial grade variant, offering 0.3°C maximum accuracy versus 0.25°C for the TMP126EDCKRQ1, but both share the same 14-bit SPI output, 175°C maximum temperature, CRC checking, and 6-pin SOT-23 package. For designs that do not require AEC-Q100 automotive qualification, the TMP126DCKR is cost-optimized while retaining the same core feature set.
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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+ | $1.6800 | $168.00 |
| 500+ | $1.5900 | $795.00 |
| 3000+ | $1.5100 | $4530.00 |
| 6000+ | $1.4900 | $8939.76 |
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