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. 170-4381
Mfr. Part No.HPP809A031
$90.321
Each (In a Box of 100)
units
Temperature & Humidity Voltage Analogue ±5%RH Through Hole - -40 °C -40 → +85 °C +85 °C 4.75 V dc 5.25 V dc - 11.6mm 76.3mm
RS Stock No. 169-1857
Mfr. Part No.SHT21
BrandSensirion
$6.688
Each (On a Reel of 400)
units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.1 V 3.6 V DFN 3mm 1.1mm
RS Stock No. 177-5953
Mfr. Part No.HIH-4000-001
BrandHoneywell
$25.41
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 528-3171
Mfr. Part No.HIH-4000-001
BrandHoneywell
$35.44
Each
units
Humidity Sensor Analogue Analogue ±3.5% Through Hole 3 -40 °C -40 → +85 °C +85 °C 4 V dc 5.8 V dc SIP 21.66mm 2.03mm
RS Stock No. 169-1840
Mfr. Part No.SHT35-DIS-B
BrandSensirion
$13.25
Each (On a Reel of 2500)
units
Temperature & Humidity Digital Serial-I2C ±0.2 (Temperature) °C, ±1.5 (Humidity) %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 123-7352
Mfr. Part No.SHT35-DIS-B
BrandSensirion
$15.52
Each
units
Temperature & Humidity Digital Serial-I2C ±0.2 (Temperature) °C, ±1.5 (Humidity) %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 876-5061
Mfr. Part No.SHT31-DIS-B
BrandSensirion
$10.27
Each
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. 169-1860
Mfr. Part No.SHT31-DIS-B
BrandSensirion
$6.858
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. 786-5554
Mfr. Part No.SHT21
BrandSensirion
$9.17
Each
units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.1 V 3.6 V DFN 3mm 1.1mm
RS Stock No. 781-1365
Mfr. Part No.HIH-6120-021-001
BrandHoneywell
$21.60
Each
units
Temperature & Humidity Digital Serial-I2C ±4%RH Through Hole 4 -25 °C -25 → +85 °C +85 °C 2.3 V 5.5 V SIP 4.9mm 3.9mm
RS Stock No. 639-3982
Mfr. Part No.LM26CIM5-PHA/NOPB
$1.566
Each (In a Pack of 5)
units
Temperature Open Drain - ±4°C Surface Mount 5 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V SOT-23 2.92mm 1.02mm
RS Stock No. 866-6087
Mfr. Part No.MAX31865ATP+
BrandMaxim
$5.92
Each
units
Temperature - SPI 0.05% Surface Mount 20 -40 °C -40 → +125 °C +125 °C 3 V 3.6 V TQFN 5.1mm 0.75mm
RS Stock No. 866-0247
Mfr. Part No.LM35DT/NOPB
$2.613
Each (In a Tube of 45)
units
Temperature Voltage Analogue ±0.9°C Through Hole 3 0 °C 0 → +100 °C +100 °C 4 V 30 V TO-220 15.5mm 4.7mm
RS Stock No. 165-4584
Mfr. Part No.MAX31865ATP+
BrandMaxim
$7.61
Each (In a Tube of 490)
units
Temperature - SPI 0.05% Surface Mount 20 -40 °C -40 → +125 °C +125 °C 3 V 3.6 V TQFN 5.1mm 0.75mm
RS Stock No. 535-9458
Mfr. Part No.LM35DT/NOPB
$4.536
Each (In a Pack of 5)
units
Temperature Voltage Analogue ±0.6°C Through Hole 3 0 °C 0 → +100 °C +100 °C 4 V 30 V TO-220 10.16mm 8.89mm
RS Stock No. 923-7630
Mfr. Part No.DS18B20+PAR
BrandMaxim
$5.261
Each (In a Tube of 500)
units
Temperature Digital 1-Wire ±0.5°C Through Hole 3 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V TO-92 4.95mm 4.95mm
RS Stock No. 786-0809
Mfr. Part No.DS18B20+PAR
BrandMaxim
$5.29
Each (In a Pack of 2)
units
Temperature Digital 1-Wire ±0.5°C Through Hole 3 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V TO-92 4.95mm 4.95mm
RS Stock No. 403-620
Mfr. Part No.MCP9700-E/TO
BrandMicrochip
$0.396
Each (In a Pack of 20)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 2.3 V 5.5 V TO-92 4.71mm 4.62mm
RS Stock No. 912-7303
Mfr. Part No.TMP01FSZ
$10.572
Each (In a Tube of 98)
units
Temperature CMOS, TTL Voltage ±1°C Surface Mount 8 -55 °C -55 → +150 °C +150 °C 4.5 V 13.2 V SOIC 5mm 1.5mm
RS Stock No. 523-7443
Mfr. Part No.AD22105ARZ
$6.31
Each
units
Temperature Switch Open Collector - ±0.5°C Surface Mount 8 -50 °C -50 → +150 °C +150 °C 2.7 V 7 V SOIC 5mm 1.5mm
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