ICBOMS
LM35DM-NOPB
Technical Documents PDF / CAD
Download Datasheet (PDF) Preview ↓
RoHS Compliant · Lead-Free EIA-481 Standard
Texas Instruments / Sensors & Transducers

LM35DM/NOPB Texas Instruments Temperature Sensor – Active

MPN LM35DM/NOPB
Active Spot Stock · 24-48h Dispatch 100% Original Sealed

Texas Instruments LM35DM/NOPB, analog local temperature sensor, 10mV/°C output scale, ±1.5°C accuracy at 25°C, 0°C–100°C sensing range, 8-SOIC surface-mount package, tube packaging.

In Stock: 70 pcs
MOQ: 1 pcs
Logistics: DHL / FedEx DAP (Global Express · 3-7d) Russia & CIS DDP (Door-to-Door Cleared)
Dispatch: Shenzhen / HK
Unit Price (USD)
$3.00 / pc
Direct Purchase Ready
Volume Pricing Breaks Confirmed upon quotation
1+ pcs
$3.00
10+ pcs
$2.55
30+ pcs
$2.26
Working on a production BOM or have a target unit price? Submit Target Price
Buy Now

$3.00 / ea

70 in stock — maximum per order · 3–4 days lead time

$2.55 / ea from 10 pcs
Upload Full BOM List
100% Original Sealed 45x Microscope QC 30-Day Warranty · COC USD T/T & PI · DAP/DDP
[SPEC] Essential Parameters Snapshot Full Specifications (11)
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supply Voltage 4V ~ 30V
ALT
Facing long factory lead times or allocation on LM35DM/NOPB? Verified pin-compatible alternatives available with active Shenzhen stock and 100% solder-ready footprint match.
View Pin Alternates (3)

Full Technical Specifications

11 Parameters
LM35DM/NOPB specifications
Parameter / AttributeSpecification / Value
Output typeAnalog Voltage
Sensor typeAnalog, Local
MountingSurface Mount
Supply voltage4V ~ 30V
Operating temperature0°C~100°C
PackageTube
Resolution10mV/°C
Case8-SOIC (0.154\", 3.90mm Width)
Test condition25°C
Accuracy - highest (Lowest)±1.5°C
Sensing temperature - local0°C~100°C
100% Footprint Match · Solder-Ready (No PCB Redesign Needed)

Need Stock or a Drop-in Second-Source for LM35DM/NOPB?

Package: TO-92 / SOIC-8 / TO-46 · Pin-compatible replacements with immediate Shenzhen spot stock

Footprint Match 97%
Supply Chain & Allocation Reality:

This family is the analog thermometer of instruments, thermostats and teaching rigs since the 1980s: a three-terminal part that reads 10 millivolts per degree with no calibration - the LM35 in Celsius, the LM34 in Fahrenheit - plus the black-sheep member that shares the slope and nothing else, the LM335, whose Kelvin scale and two-terminal shunt behavior sit 3 volts above the others. The datasheets are siblings; the outputs are different worlds. Every substitution in this row that "reads offset by a fixed amount" is the scale, not the sensor, and the fix is arithmetic, not hardware.

Verified Pin-Compatible Replacements (3 verified alternatives)

LM35DZ TI (National lineage) TO-92
100% Drop-in (Zero Code Change)
Availability & Target Pricing:

The Common Grade of the Same Sensor

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

The everyday TO-92 grade of the Celsius sensor: 10mV per degree, 0V at 0C, about 250mV at 25C, 1.000V at 100C, factory calibrated with no external trim.

4V to 30V three-terminal supply; about 60uA quiescent, which keeps self-heating low.

Compatibility & Drop-In Notes: The scale arithmetic of the whole row in one line: Celsius counts from 0C at 0V. Any repair that "reads 273 degrees high" fitted a Kelvin part, and one that "reads 32 high" fitted the Fahrenheit sibling.
Package & Solder Footprint: TO-92 pinout: supply, output, ground per the drawing - the family shares the simplicity, not the exact lead order across packages.
Shenzhen Warehouse Stock & MOQ: Universal stock in every grade; the calibrated-at-the-factory selling point.
Request Volume Quote for LM35DZ Compare LM35DM/NOPB vs LM35DZ Spec Matrix
LM335Z TI (National lineage) TO-92
Functional Equivalent
Availability & Target Pricing:

The Kelvin Shunt - Three Volts and a Resistor Away

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

A different animal wearing a sibling number: a two-terminal shunt behaving like a temperature-sensitive zener at 10mV per KELVIN - about 2.982V at 25C - with a trim pin for one-point calibration.

Needs an external bias resistor (about 1mA) instead of drawing its own quiescent current; the shunt topology is the whole difference.

Compatibility & Drop-In Notes: The substitution sentence: LM335 into a divider-input microcontroller world works electrically, but the readings are 273 degrees and 3 volts away from the LM35 world unless the arithmetic and the reference are re-planned. It is the classic "sensor reads nonsense after the swap" story.
Package & Solder Footprint: Same TO-92 body as the LM35 - the difference is invisible until powered.
Shenzhen Warehouse Stock & MOQ: Stocked; the standard for precise Kelvin-referenced measurement and thermocouple cold-junction duty.
Request Volume Quote for LM335Z Compare LM35DM/NOPB vs LM335Z Spec Matrix
LM34 TI (National lineage) TO-92 / SOIC-8
Functional Equivalent
Availability & Target Pricing:

The Fahrenheit Sibling - Same Everything Else

Shenzhen Spot Stock (24-48h Dispatch)

Electrical & Core Specs:

The Fahrenheit scale of the same sensor design: 10mV per degree F, comparable accuracy class, same three-terminal simplicity and package family.

5V to 30V supply window - narrower than the LM35s.

Compatibility & Drop-In Notes: Reading the wrong unit costs face, not function: an LM34 in an LM35 circuit reports values that are plausible for a while (a warm room reads 74 instead of 23). Check the scale before debugging physics.
Package & Solder Footprint: Shared TO-92 family packaging; verify the exact variant lead drawing.
Shenzhen Warehouse Stock & MOQ: Stocked for US-market equipment repair.
Request Volume Quote for LM34 Compare LM35DM/NOPB vs LM34 Spec Matrix
Buyer & Quality Checklist for Sourcing Alternatives
  • The 10mV slope is shared across LM35 (C), LM34 (F) and LM335 (K): the zero point differs, so the same conversion code mis-reads the other two by exactly the scale - 273 for Kelvin, 32-and-a-factor for Fahrenheit. Always read the part number before trusting any temperature.
  • The LM335 is a shunt and needs a bias resistor; the LM35 and LM34 are active three-terminal parts with a supply pin. The sockets look alike and the power topology does not - a shunt fitted without its resistor reads as an open circuit, resistor-less, and an active part in a shunt socket fights the bias network.
  • The LM335 output (about 3V at room temperature) collides with the reference ceiling of many microcontroller ADCs: any substitution from the Celsius or Fahrenheit parts needs the ADC range re-planned, not just the code.
  • Sub-zero accuracy costs a resistor on the LM35 family: without the pull-down, negative temperatures clamp at zero - greenhouses and cold-chain loggers keep discovering this annually.
  • Self-heating is the analog sensor tax: the ~60uA quiescent current is the selling point against the old thermistor bridges, and long thin cables to the sensor add their own error terms - air-flow mounting helps both.
  • For cold-junction sensing in thermocouple rigs, the LM335 is the traditional choice precisely for its Kelvin scale; the Celsius parts move the conversion, not the accuracy, and either can serve once the arithmetic is explicit.
Frequently Asked Technical Questions

Q: What is the difference between LM35 and LM335?

A: Scale and topology: LM35 reports Celsius at 10mV/degree from a three-terminal supply, about 250mV at 25C. LM335 reports Kelvin at 10mV/degree as a two-terminal shunt needing a bias resistor, about 2.982V at 25C. Same slope, 273 degrees and 3 volts apart.

Q: Can I use an LM335 where an LM35 was fitted?

A: The mechanical fit and the ADC wiring may pass, but the readings are Celsius-plus-273 on a 3V offset that many ADC references cannot span. It needs a firmware and reference re-plan - a design decision, not a parts substitution.

Q: Why does my temperature sensor read exactly 32 degrees high?

A: An LM34: the Fahrenheit-scale sibling of the LM35 reads 10mV per degree F, so the same code shows Fahrenheit values as if they were Celsius, offset and scaled. Read the part number off the body before calibrating anything.

Technical Details & Description

What the 10 mV/°C scale means for your error budget

The LM35DM/NOPB outputs an analog voltage that scales linearly at 10 mV/°C — at 25°C the output is 250 mV, at 100°C it is 1.0 V. No external gain or cold-junction compensation is needed; the ADC sees a direct Celsius reading. The ±1.5°C accuracy at 25°C is the baseline error; over the full 0°C–100°C range the total error stack includes the sensor's own linearity and supply rejection, so budget 2–3°C worst-case if the 4 V–30 V supply rail is noisy.

Sensing range and operating environment

Rated for 0°C to 100°C local sensing — this covers PCB ambient monitoring, enclosure air temperature, and thermal management in indoor equipment. It is not suited for sub-zero or high-temp applications like engine compartments or freezers. The 8-SOIC package with 0.154-inch body width fits standard 150-mil SOIC footprints; the surface-mount profile makes it a drop-in for automated assembly.

Frequently asked questions

Is LM35DM/NOPB obsolete or still active?

No LTB notice or successor has been published by Texas Instruments. It remains a current-production part suitable for new designs.

What is the closest pin-compatible alternative to LM35DM/NOPB?

Within the LM35 family, the LM35DZ/NOPB is the TO-92 through-hole variant with the same 10 mV/°C scale and ±1.5°C accuracy, but it is not pin-compatible due to the different package. For a direct SOIC-8 replacement, the LM35DM (non-NOPB) is electrically identical but lacks the NOPB lead-free designation. No other manufacturer offers a drop-in SOIC-8 replacement with the same transfer function.

LM35DM/NOPB
Verified Allocation
Quote