Temperature Sensors & Humidity Sensors

Temperature sensors are components that directly translate physical temperature into digital information. Likewise, humidity sensors are able to measure atmospheric moisture levels and translate that into digital information. As such, temperature and humidity sensors are essential for environmental monitoring in and around sensitive electronic equipment.

These capabilities make temperature and humidity sensors suitable for a number of applications, such as to maintain environmental conditions in laboratory test and measurement. They might also be used to trigger a shut-down of equipment that might be compromised by over-heat, or moisture exposure such as condensation.

The RS components range offers temperature sensors and humidity sensors from trusted brands, suitable for a variety of applications and calibrations.

Types of Temperature Sensor

• Thermostats and thermocouples are temperature sensors which measure heat generation via voltage output. They are typically robust and inexpensive, and can be used over a wide range of temperatures.

• PT100 sensors measure the resistance deviation of the medium to determine its temperature, and are sometimes called resistance temperature detectors, or RTDs. These sensors are known for their high accuracy and reliability.

• Infrared temperature sensors and thermographic cameras convert thermal radiation to an electrical signal to monitor temperature levels. These are ideal for circumstances where contact sensors cannot be used.

Types of Humidity Sensor

• Capacitive humidity sensors use humidity-dependent condensers to determine moisture output. These sensors are often used to measure relative humidity in air conditioning units and HVAC systems.

• Resistive humidity sensors measure the electrical variation in conductive polymers and treated substrates. Low cost and small of size, these sensors are used in a variety of applications and appliances.

• Thermal conductor humidity sensors calibrate the deviation between the thermal conductivity of dry air versus moist air. Due to their long-term durability and high temperature resistance, these sensors are often used in clothes dryers and ovens.

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Description Price Sensor Function Output Type Interface Type Accuracy Mounting Type Pin Count Minimum Operating Temperature Operating Temperature Range Maximum Operating Temperature Minimum Operating Supply Voltage Maximum Operating Supply Voltage Package Type Length Height
RS Stock No. 727-6226
Mfr. Part No.SHT25
BrandSensirion
SGD16.09
Each
units
Temperature & Humidity Digital Serial-I2C ±1.8%RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.1 V 3.6 V DFN 3mm 1.1mm
RS Stock No. 912-9961
Mfr. Part No.ADT7420UCPZ-R2
SGD7.134
Each (On a Reel of 250)
units
Temperature Open Drain Serial-I2C ±0.25°C Surface Mount 16 -40 °C -40 → +150 °C +150 °C 2.7 V 5.5 V LFCSP 4.1mm 0.75mm
RS Stock No. 709-8215
Mfr. Part No.ADT7470ARQZ
SGD8.35
Each
units
Temperature Digital SPI ±12% Surface Mount 16 -40 °C -40 → +125 °C +125 °C 3 V 5.5 V QSOP 5mm 1.65mm
RS Stock No. 504-5654
Mfr. Part No.LM75BIMM-3/NOPB
SGD3.508
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V MSOP 3mm 0.86mm
RS Stock No. 121-8696
Mfr. Part No.LM35CAZ/NOPB
SGD4.807
Each (In a Box of 1800)
units
Temperature Voltage Analogue ±0.2°C Through Hole 3 -40 °C -40 → +110 °C +110 °C 4 V 30 V TO-92 5.2mm 5.2mm
RS Stock No. 912-8794
Mfr. Part No.TMP36GT9Z
SGD1.46
Each (In a Bag of 100)
units
Temperature Emitter Follower Voltage ±3°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V TO-92 5.21mm 5.33mm
RS Stock No. 865-2309
Mfr. Part No.Si7020-A20-GM
SGD3.48
Each (In a Pack of 3)
units
Temperature & Humidity Digital Serial-I2C ±0.4 °C, ±4 %RH Surface Mount 6 -40 °C -40 → +85 °C +85 °C 1.9 V 3.6 V DFN 3mm 0.75mm
RS Stock No. 121-9338
Mfr. Part No.LM35DZ/LFT1
SGD1.074
Each (On a Reel of 2000)
units
Temperature Voltage Analogue ±2°C Through Hole 3 0 °C -55 → +150 °C +100 °C 4 V 30 V TO-92 5.21mm 5.34mm
RS Stock No. 159-6621
Mfr. Part No.TC622VAT
BrandMicrochip
SGD2.176
Each (In a Tube of 50)
units
Temperature Driver Analogue ±5°C Through Hole 5 -40 °C -40 → +125 °C +125 °C 4.5 V 18 V TO-220 10.67mm 9.02mm
RS Stock No. 162-9095
Mfr. Part No.NCT75DR2G
SGD0.361
Each (On a Reel of 2500)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V SOIC 5mm 1.5mm
RS Stock No. 805-1854
Mfr. Part No.NCT75DR2G
SGD0.67
Each (On a Tape of 25)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V SOIC 5mm 1.5mm
RS Stock No. 162-4755
Mfr. Part No.LM75BIMM-3/NOPB
SGD1.41
Each (On a Reel of 1000)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V MSOP 3mm 0.86mm
RS Stock No. 121-8802
Mfr. Part No.LM92CIM/NOPB
SGD6.576
Each (In a Tube of 95)
units
Temperature Digital Serial-I2C, SMBus ±1.5°C Surface Mount 8 -55 °C -55 → +150 °C +150 °C 2.7 V 5.5 V SOIC 4.9mm 1.45mm
RS Stock No. 874-4562
Mfr. Part No.HIH-4000-004
BrandHoneywell
SGD28.04
Each
units
Humidity Sensor Analogue Analogue ±3.5%RH Through Hole 3 -40 °C -40 → +85 °C +85 °C 4 V dc 5.8 V dc SIP 4.17mm 8.59mm
RS Stock No. 811-5579
Mfr. Part No.LM34CZ/NOPB
SGD13.32
Each
units
Temperature Voltage Analogue ±4°F Through Hole 3 -40 °C -40 → +110 °C +110 °C 5 V 30 V TO-92 5.2mm 5.2mm
RS Stock No. 170-4356
Mfr. Part No.G-NICO-001
SGD1.029
Each (On a Reel of 10000)
units
Temperature Analogue - ±0.4°C Surface Mount 3 -55 °C -55 → +160 °C +160 °C - - SOT-23 3.05mm 1.12mm
RS Stock No. 169-0085
Mfr. Part No.SI7020-A20-GM
SGD3.205
Each (On a Tape of 100)
units
Temperature & Humidity Digital Serial-I2C ±0.4 °C, ±4 %RH Surface Mount 6 -40 °C -40 → +85 °C +85 °C 1.9 V 3.6 V DFN 3mm 0.75mm
RS Stock No. 169-1860
Mfr. Part No.SHT31-DIS-B
BrandSensirion
SGD3.04
Each (On a Reel of 2500)
units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 662-3876
Mfr. Part No.TMP102AIDRLT
SGD2.50
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 6 -40 °C -40 → +125 °C +125 °C 1.4 V 3.6 V SOT-553 1.6mm 0.55mm
RS Stock No. 169-9921
Mfr. Part No.HYT271
SGD33.379
Each (In a Tray of 50)
units
Temperature & Humidity Digital Serial-I2C ±0.2 (Temperature) K, ±1.8 (Humidity) % Through Hole 4 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V - 5.1mm 10.2mm
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