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LM35DZ/NOPB Precision Temperature Sensor, TO-92 Package, Linear Analog Output, ±0.5°C Accuracy (National semiconductor-Original)

Name: LM35DZ/NOPB Precision Temperature Sensor, TO-92 Package, Linear Analog Output, ±0.5°C Accuracy (National semiconductor-Original)
SKU: Yes, for commercial products requiring reliable analog temperature sensing within the 0–100°C range. The genuine TI LM35DZ/NOPB is a mature, well-documented part. For applications requiring wider temperature range, consider the LM35CZ (0–120°C) or the full LM35 metal package (-55°C to +150°C). Business purchasers should verify authenticity by sourcing from authorized distributors, as counterfeit LM35 chips are documented in low-cost supply channels.
Price: 0.43 USD
Availability: InStock

$0.43

SKU: Yes, for commercial products requiring reliable analog temperature sensing within the 0–100°C range. The genuine TI LM35DZ/NOPB is a mature, well-documented part. For applications requiring wider temperature range, consider the LM35CZ (0–120°C) or the full LM35 metal package (-55°C to +150°C). Business purchasers should verify authenticity by sourcing from authorized distributors, as counterfeit LM35 chips are documented in low-cost supply channels. Category: SENSORS

Description

The LM35DZ/NOPB is a precision analog temperature sensor from Texas Instruments (originally developed by National Semiconductor) with an output voltage linearly proportional to Celsius temperature. Unlike sensors calibrated in Kelvin, the LM35 requires no subtraction of a large constant voltage—at 0°C, the output is 0V, and it rises by 10mV per °C . This direct Celsius scaling makes it exceptionally easy to interface with any ADC.

The LM35DZ is the TO-92 plastic package variant, rated for a 0°C to +100°C operating range . It operates from 4V to 30V, draws less than 60µA, and has low self-heating of 0.08°C in still air . The low-impedance output (0.1Ω for 1mA load) allows direct connection to ADC inputs without buffering. The “/NOPB” suffix indicates lead-free (No Pb) packaging, making it suitable for markets with RoHS requirements .

Critical limitation: The TO-92 plastic package has poor thermal coupling to ambient air compared to metal packages—the copper leads are the principal thermal path. TI notes that the device’s low self-heating is an advantage, but for accurate surface temperature measurement, the leads should be thermally bonded to the measurement surface. For air temperature measurement, adequate airflow or acceptance of slower response is necessary.

Features

Direct Celsius Output: 0V at 0°C, 10mV/°C scale factor—no Kelvin offset subtraction required .
Wide Supply Range (4V–30V): Flexible compatibility with 5V, 12V, and higher systems .
Low Power Consumption: <60µA current draw, minimizing self-heating .
Low Self-Heating: 0.08°C in still air .
Low-Impedance Output: 0.1Ω for 1mA load, suitable for direct ADC connection .
±0.5°C Ensured Accuracy at 25°C: Factory-calibrated without external trimming .
Lead-Free (NOPB) Packaging: RoHS-compatible construction .
TO-92 Plastic Package: Standard 3-pin through-hole package for easy prototyping .

Technical Specifications

Parameter	Specification (LM35DZ/NOPB)
Temperature Range	0°C to +100°C (LM35DZ variant)
Accuracy	±0.5°C ensured at 25°C; ±0.75°C typical over full range
Scale Factor	10mV/°C
Supply Voltage	4V to 30V
Current Draw	<60µA
Self-Heating	0.08°C in still air
Output Impedance	0.1Ω for 1mA load
Package	TO-92 (3-pin), lead-free (NOPB)

Additional information

Weight	0.002 kg
Temperature Range	0°C to +100°C (LM35DZ variant)
Accuracy	±0.5°C ensured at 25°C; ±0.75°C typical over full range
Scale Factor	10mV/°C
Supply Voltage	4V to 30V
Current Draw	<60µA
Self-Heating	0.08°C in still air
Output Impedance	0.1Ω for 1mA load
Package	TO-92 (3-pin), lead-free (NOPB)

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