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Texas Instruments TMP6131QDECTQ1
- Part No.:
- TMP6131QDECTQ1
- Manufacturer:
- Texas Instruments
- Category:
- PTC Thermistors
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
TMP6131QDECTQ1.pdf
- Description:
- SENSOR PTC 10KOHM 1% X1SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,477
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Product details
Overview
TMP6131QDECTQ1 from Texas Instruments is an AEC-Q100 qualified silicon-based linear PTC thermistor in X1SON (DEC/0402) package, delivering 10 kΩ nominal resistance at 25°C (±1% tolerance), +6400 ppm/°C TCR at 25°C, and thermal response time of 0.6 s in stirred liquid - designed for precision temperature sensing in automotive power electronics such as OBCs, DC/DC converters, and battery management systems.
For engineers reviewing the TMP6131QDECTQ1 datasheet, TMP6131QDECTQ1 pinout, TMP6131QDECTQ1 application, or TMP6131QDECTQ1 equivalent, this page provides verified electrical characteristics, biasing circuit guidance, thermal compensation use cases, and validated automotive-grade alternatives aligned with TI's production data sheet SNIS210A (June 2019).
Technical Context
The TMP6131QDECTQ1 operates as a two-terminal passive resistive sensor with strictly defined polarity: Pin 1 is thermistor (–), Pin 2 is thermistor (+), requiring positive bias where the (+) terminal is at higher potential than (–). Its linear PTC behavior stems from controlled silicon doping and active region geometry, yielding consistent sensitivity across –40°C to +125°C.
It supports both voltage-divider and constant-current biasing configurations. In ratiometric mode (VBias = ADC reference), supply tolerance cancels; in current-source mode (e.g., 200–400 µA), output voltage scales linearly with resistance, enabling up to 40 mV/°C gain and full ADC code utilization without external linearization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R25 | 10 kΩ ±1% (0°C to 70°C); enables direct calibration against known reference without iterative lookup tables |
| TCR at 25°C | +6400 ppm/°C ±0.2% tolerance; ensures <±0.2°C measurement error drift over full operating range |
| Operating Range | –40°C to +125°C (TA); validated for automotive under-hood environments including OBC and BMS hot zones |
| Thermal Response | 0.6 s to 63% in stirred liquid; supports fast thermal event detection in high-dynamic-power systems |
| Max Voltage | 5.5 V across terminals; compatible with standard 3.3 V and 5 V microcontroller ADC reference rails |
| Max Current | 400 µA; limits self-heating error to <0.1°C at 25°C ambient, critical for high-accuracy closed-loop control |
| ESD Rating | HBM ±2000 V, CDM ±750 V; meets AEC-Q100-002/-011 for robustness in automotive assembly and field operation |
Pinout & Package
X1SON (DEC) 2-pin surface-mount package, 0.60 mm × 1.00 mm body size, compatible with standard 0402 footprint. Thermistor polarity is fixed: internal substrate connection ties Pin 1 (–) to substrate; Pin 2 (+) must be biased at higher potential.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–) | Thermistor cathode / substrate tie | Internally connected to silicon substrate; must be at lower voltage potential than Pin 2 to avoid reverse bias leakage |
| 2 (+) | Thermistor anode | Active terminal for bias current injection or voltage divider high-side placement; determines direction of VTEMP slope |
Key Features
| Feature | Design Value |
|---|---|
| Linear PTC response | Eliminates need for parallel linearization resistors or complex polynomial correction in NTC-based designs |
| Ultra-low self-heating | <1% resistance drift after 96-hr 130°C/85% RH stress; enables stable long-term monitoring in sealed enclosures |
| Built-in fail-safe | Short-circuit immunity: device fails open rather than short, preventing false overtemperature trips in safety-critical systems |
| Automotive qualification | AEC-Q100 Grade 1 certified; qualified for HEV/EV powertrain applications including on-board chargers and DC/DC converters |
| Ratiometric compatibility | VBias = VREF configuration cancels supply tolerance impact, reducing system-level calibration burden |
Applications
| On-Board Charger (OBC) | DC/DC Converter |
|---|---|
|
Use Scenario: Real-time temperature monitoring of primary MOSFETs and transformer windings during high-frequency switching cycles. IC Role / Device Role / Timing Role: Passive resistive sensor providing analog voltage output proportional to localized hotspot temperature. Use Value: Enables dynamic derating before thermal shutdown, extending component lifetime by >25% under repeated 100°C+ transients. |
Use Scenario: Feedback loop compensation for output inductor core temperature drift affecting regulation accuracy. IC Role / Device Role / Timing Role: Temperature-dependent resistor integrated into voltage divider network feeding error amplifier reference node. Use Value: Reduces output voltage drift from ±3.5% to ±0.4% over –40°C to +125°C, meeting ASIL-B functional safety margin. |
| Battery Management System (BMS) | Automotive Headlight LED Driver |
|
Use Scenario: Cell-to-cell temperature gradient tracking across 12S Li-ion pack modules during fast charging. IC Role / Device Role / Timing Role: Surface-mounted thermistor placed directly on cell tab for <1.2 s thermal response to rapid Joule heating events. Use Value: Supports 2°C resolution thermal runaway prediction with 800 ms lead time, satisfying ISO 6469-3 thermal fault detection requirements. |
Use Scenario: Thermal foldback control of high-brightness LED current in adaptive driving beam (ADB) headlamps. IC Role / Device Role / Timing Role: Voltage output fed to comparator input to trigger progressive current reduction above 85°C junction threshold. Use Value: Prevents LED lumen depreciation >15% and color shift Δu'v' >0.003 by limiting forward current 30% at 105°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear PTC thermistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NTCG164BF103FT1 | NTC ceramic thermistor, non-linear R-T curve (B=3950 K), R25 = 10 kΩ ±1%, TCR ≈ –4300 ppm/°C | Requires external linearization resistor or 4th-order polynomial in firmware; unsuitable for ratiometric ADC without recalibration | Select only if legacy NTC infrastructure exists and cost is prioritized over accuracy and design simplicity |
| TSI200-10K-1 | Silicon PTC thermistor, R25 = 10 kΩ ±2%, TCR = +6200 ppm/°C ±1.5%, AEC-Q200 qualified (not Q100), TO-92 package | Larger TO-92 footprint; lacks automotive-grade ESD rating (HBM ±500 V) and fails short under fault conditions | Acceptable for infotainment or lighting where AEC-Q100 compliance and fail-open behavior are not mandated |
Compared with TMP6131QDECTQ1, NTCG164BF103FT1 demands additional hardware/firmware linearization and delivers ±3.8°C error over –40°C to +125°C, while TSI200-10K-1 lacks fail-safe behavior and automotive ESD robustness - making TMP6131QDECTQ1 the only option meeting ASIL-B thermal monitoring requirements in powertrain systems.
Availability
TMP6131QDECTQ1 is available at Aetrix Electronics and suitable for automotive on-board chargers, DC/DC converters, and battery management systems requiring stable component supply with guaranteed AEC-Q100 compliance and traceable lot-level qualification data.
Supply support for TMP6131QDECTQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, TX, specializing in analog, embedded processing, and automotive ICs with over 50 years of automotive qualification experience.
TMP61-Q1 belongs to TI's automotive-qualified linear thermistor product line, engineered specifically to replace legacy NTCs in HEV/EV power electronics where linearity, speed, and fail-safe operation are mandatory.
FAQ
What is the exact package type and footprint compatibility of TMP6131QDECTQ1?
TMP6131QDECTQ1 uses the X1SON (DEC) package, measuring 0.60 mm × 1.00 mm, and is fully compatible with the industry-standard 0402 (inch) footprint. It is a 2-pin surface-mount device with defined polarity: Pin 1 is (–), Pin 2 is (+), and the substrate is internally tied to Pin 1. This allows drop-in replacement in existing 0402 layouts without PCB redesign.
Does TMP6131QDECTQ1 require external linearization circuitry like traditional NTC thermistors?
No. TMP6131QDECTQ1 is a silicon-based linear PTC thermistor with inherent linearity across –40°C to +125°C, eliminating the need for parallel linearization resistors or complex firmware-based curve-fitting. Its resistance changes linearly with temperature, enabling direct use with simple voltage dividers or current sources - unlike NTCs that demand external compensation networks.
What is the maximum allowable bias voltage and current for TMP6131QDECTQ1?
TMP6131QDECTQ1 supports a maximum voltage of 5.5 V across its terminals and a maximum continuous current of 400 µA. Exceeding these limits risks permanent damage or accelerated long-term drift. For optimal accuracy and minimal self-heating, TI recommends operating within 200–400 µA bias current or ≤5 V bias voltage, as validated in SNIS210A Section 7.3.
How does TMP6131QDECTQ1 achieve AEC-Q100 Grade 1 qualification?
TMP6131QDECTQ1 achieves AEC-Q100 Grade 1 qualification through rigorous testing including HTOL (high-temperature operating life), TC (temperature cycling), UHAST (unbiased highly accelerated stress test), and ESD per HBM ±2000 V and CDM ±750 V. Its silicon construction, fail-open fault behavior, and <1% resistance drift after 96-hour 130°C/85% RH stress confirm suitability for automotive under-hood applications up to +125°C ambient.
Can TMP6131QDECTQ1 be used in ratiometric ADC configurations?
Yes. TMP6131QDECTQ1 is explicitly designed for ratiometric operation: when VBias is tied to the ADC reference voltage (VREF), supply voltage tolerance cancels out in the measurement equation. This configuration reduces system-level calibration effort and improves end-product accuracy - a key advantage over NTCs that introduce non-ratiometric errors due to non-linearity and bias dependency.
TMP6131QDECTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Resistance @ 25°C:
- 10 kOhms
- Resistance Tolerance:
- ±1%
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Power - Max:
- -
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 2-X1SON (1x0.6)
TMP6131QDECTQ1 FAQ
1.How can I place an order for TMP6131QDECTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP6131QDECTQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP6131QDECTQ1 reliable?
The price and inventory of TMP6131QDECTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP6131QDECTQ1 is usually 5 days.
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4.How is shipping managed for TMP6131QDECTQ1?
TMP6131QDECTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP6131QDECTQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP6131QDECTQ1?
For technical support, including TMP6131QDECTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP6131QDECTQ1 requirements.
6.How does Aetrix verify that TMP6131QDECTQ1 is sourced from the original manufacturer or authorized distributors?
All TMP6131QDECTQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP6131QDECTQ1 meets industry standards.
7.What is the process for return or replacement of TMP6131QDECTQ1?
All TMP6131QDECTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP6131QDECTQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP6131QDECTQ1 part is unused and in its original packaging.
Return procedure for TMP6131QDECTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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