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LM95071QIMFX/NOPB
Texas Instruments
SENSOR DIGITAL -40C-150C SOT23-5
10045 Pcs New Original In Stock
Temperature Sensor Digital, Local -40°C ~ 150°C 13 b SOT-23-5
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5.0 / 5.0
- (142 Ratings)
LM95071QIMFX/NOPB
Product Overview
1359471
DiGi Electronics Part Number
LM95071QIMFX/NOPB-DGManufacturer
Texas Instruments
LM95071QIMFX/NOPB
Description
SENSOR DIGITAL -40C-150C SOT23-5Inventory
10045 Pcs New Original In Stock
Temperature Sensor Digital, Local -40°C ~ 150°C 13 b SOT-23-5
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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LM95071QIMFX/NOPB Technical Specifications
Category
Temperature Sensors, Analog and Digital Output
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Sensor Type
Digital, Local
Sensing Temperature - Local
-40°C ~ 150°C
Sensing Temperature - Remote
-
Output Type
SPI
Voltage - Supply
2.4V ~ 5.5V
Resolution
13 b
Features
Shutdown Mode
Accuracy - Highest (Lowest)
±1°C (±2°C)
Test Condition
0°C ~ 70°C (-40°C ~ 150°C)
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Grade
Automotive
Qualification
AEC-Q100
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
LM95071
Datasheet & Documents
Manufacturer Product Page
LM95071QIMFX/NOPB Specifications
HTML Datasheet
LM95071QIMFX/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-296-40259-1-DG
296-40259-2-DG
296-40259-1-DG
296-LM95071QIMFX/NOPBDKR
296-40259-6
LM95071QIMFX/NOPB-DG
296-LM95071QIMFX/NOPBTR
296-40259-2
296-40259-1
296-40259-6-DG
TEXTISLM95071QIMFX/NOPB
2156-LM95071QIMFX/NOPB
296-LM95071QIMFX/NOPBCT
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the LM95071QIMFX/NOPB in automotive under-hood applications, and how does its AEC-Q100 qualification mitigate them?
The LM95071QIMFX/NOPB is AEC-Q100 Grade 2 qualified, meaning it is rated for operation up to 105°C ambient, which is critical for under-hood environments where temperatures can exceed 125°C under peak load. However, sustained operation near the 150°C sensing limit—especially during thermal cycling—can accelerate aging of the internal bandgap reference and affect long-term accuracy. To mitigate risk, maintain PCB copper pour under the SOT-23-5 package for heat spreading, avoid placing near high-dissipation components, and validate performance across the full -40°C to 125°C vehicle operating range during HALT testing. The MSL 1 rating also eliminates moisture-related failures during reflow, a common failure mode in non-automotive-grade sensors.
Can the LM95071QIMFX/NOPB replace a Maxim MAX31875 in an existing SPI-based thermal monitoring design without firmware changes?
While both the LM95071QIMFX/NOPB and Maxim MAX31875 support SPI interfaces and similar voltage ranges (2.7V–5.5V for MAX31875 vs. 2.4V–5.5V for LM95071QIMFX/NOPB), direct replacement is not guaranteed due to differences in register map, data format, and power-on reset behavior. The LM95071QIMFX/NOPB uses a 13-bit two’s complement output with a fixed 0.03125°C/LSB resolution, whereas the MAX31875 uses a 12-bit format with different scaling. Additionally, the LM95071QIMFX/NOPB lacks a configurable alert pin, which the MAX31875 provides. A firmware update will be required to reinterpret temperature data and handle initialization sequences. Always verify timing compatibility—especially SPI mode and clock rate—before drop-in substitution.
How does the shutdown mode in the LM95071QIMFX/NOPB impact system power budgeting in battery-powered automotive modules, and what are the trade-offs?
The LM95071QIMFX/NOPB’s shutdown mode reduces typical current consumption to below 1 µA, making it suitable for always-on battery-powered systems like telematics or security modules. However, entering/exiting shutdown introduces a wake-up delay of approximately 10 ms before valid temperature readings are available, which may affect real-time thermal response in safety-critical loops. To balance power and responsiveness, use periodic sampling with duty cycling rather than continuous monitoring. Also, ensure the host MCU’s SPI controller can tolerate the sensor’s re-initialization time. Over-reliance on shutdown mode without accounting for this latency can lead to undetected thermal events during transient overloads.
What PCB layout practices are essential to maintain ±1°C accuracy with the LM95071QIMFX/NOPB in high-vibration automotive environments?
To preserve the LM95071QIMFX/NOPB’s ±1°C accuracy (specified from 0°C to 70°C), minimize thermal gradients and mechanical stress on the SOT-23-5 package. Use a solid ground plane beneath the device with thermal vias to stabilize die temperature, but avoid large copper pours that could create thermal inertia and delay response. Keep high-current traces and switching components (e.g., DC-DC converters) at least 5 mm away to reduce conducted EMI and self-heating. In high-vibration settings, ensure adequate solder fillet formation during reflow and consider conformal coating to prevent microcracks. Poor layout can induce self-heating errors exceeding 2°C—worse than the sensor’s native accuracy—defeating the purpose of using a precision automotive-grade device.
Is the LM95071QIMFX/NOPB a viable upgrade from the older LM95071IMF/NOPB, and what design changes are needed for backward compatibility?
The LM95071QIMFX/NOPB is the AEC-Q100 qualified version of the commercial LM95071IMF/NOPB, offering identical electrical characteristics, pinout, and SPI protocol, making it a drop-in replacement in most cases. However, the 'Q' suffix denotes automotive-grade screening, including tighter process controls and extended reliability testing. If your design previously used the non-automotive LM95071IMF/NOPB in a non-safety application, upgrading to the LM95071QIMFX/NOPB requires no hardware changes but mandates updated documentation for compliance (e.g., PPAP, IMDS). Ensure your assembly house handles the RoHS3-compliant, lead-free package correctly—though MSL 1 eliminates bake requirements. This upgrade is strongly recommended for new automotive designs to meet functional safety and supply chain traceability demands.
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LM95071QIMFX/NOPB CAD Models
Texas Instruments LM95071QIMFX/NOPB PCB symbols & footprints
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