TMP126EDCKRQ1 Texas Instruments Integrated Circuit (SOT23 (6-Pin)) In Stock
The TMP126EDCKRQ1 is an AEC-Q100 automotive-qualified SPI temperature sensor from Texas Instruments with 0.25°C maximum accuracy and 175°C maximum operating temperature. It provides 14-bit resolution, integrated CRC error checking, and a slew-rate alert output in a 6-pin SOT-23 package measuring 2 mm × 1.25 mm. Available on tape and reel for automated automotive assembly.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- TMP126EDCKRQ1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.25°C maximum accuracy with 14-bit resolution enabling precise temperature monitoring up to 175°C for automotive powertrain and battery management systems
- Integrated CRC error detection on SPI communication bus guards against data corruption in electrically noisy automotive ECU environments
- Slew-rate alert output triggers an interrupt when temperature changes faster than a programmable threshold, enabling rapid thermal event detection in motor drives and power modules
Applications
The TMP126EDCKRQ1 is designed for automotive applications such as battery management systems, motor controllers, and powertrain ECUs where continuous temperature monitoring up to 175°C with 0.25°C accuracy is required. Its SPI interface with CRC error checking integrates directly with automotive microcontrollers operating in electrically noisy environments, ensuring data integrity over long PCB traces. The slew-rate alert feature also makes it suitable for thermal protection in IGBT gate drivers, DC-DC converters, and inverter modules where rapid thermal events must be detected and reported within milliseconds.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Accuracy-Max (Cel) | 0.25Cel |
| 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 |
| Output Voltage-Max | 2.9V |
| Output Voltage-Min | 0.4V |
| Package Equivalence Code | TSSOP6,.08 |
| Package Shape/Style | RECTANGULAR |
| Screening Level | AEC-Q100 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How accurate is the TMP126EDCKRQ1 temperature reading and what is the maximum operating temperature?
The TMP126EDCKRQ1 achieves a maximum accuracy of 0.25°C across its calibrated range and supports operation up to 175°C, enabling reliable temperature measurement in high-temperature automotive environments such as under-hood battery modules and power semiconductor junction monitoring where standard sensors rated to 125°C are insufficient.
What digital interface does the TMP126EDCKRQ1 use, and how does CRC improve system reliability?
The TMP126EDCKRQ1 communicates via SPI and includes integrated CRC error checking on every data frame. In automotive applications where SPI buses may span several centimeters across noisy PCBs near motor drive circuits, CRC detects single-bit and multi-bit transmission errors that would otherwise cause the host microcontroller to act on a false 14-bit temperature value.
What is the slew-rate alert function of the TMP126EDCKRQ1 and when should designers use it?
The slew-rate alert triggers a hardware interrupt when the measured temperature changes by more than a programmable rate threshold in degrees Celsius per second. This is particularly useful in motor drive inverters and battery packs where a sudden thermal event such as a short circuit or overload causes temperature to rise faster than 10°C/s, requiring immediate protective action before an absolute over-temperature threshold is exceeded.
Does the TMP126EDCKRQ1 meet automotive qualification standards, and what package size does it use?
Yes, the TMP126EDCKRQ1 carries AEC-Q100 automotive qualification (Q1 suffix) and is housed in a 6-pin SOT-23 package with a 2 mm × 1.25 mm × 0.9 mm body. This miniature surface-mount footprint is compatible with standard automotive reflow profiles at 260°C peak, and the lead-free e4 JESD-609 code confirms RoHS compliance for global automotive supply chains.
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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.
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