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. 170-4357
Mfr. Part No.HPP801A031
HK$28,179.72
1 Box of 1200
Box(es)
Humidity Sensor Analogue Analogue ±2% Through Hole 2 -60 °C -60 → +140 °C +140 °C - 10 V ac - 10.2mm 6.2mm
RS Stock No. 893-7082
Mfr. Part No.HPP801A031
HK$55.06
Each
units
Humidity Sensor Analogue Analogue ±2% Through Hole 2 -60 °C -60 → +140 °C +140 °C - 10 V ac - 10.2mm 6.2mm
RS Stock No. 923-7630
Mfr. Part No.DS18B20+PAR
BrandMaxim
HK$31.097
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
HK$29.59
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. 540-2805
Mfr. Part No.DS18B20+
BrandMaxim
HK$26.10
Each
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. 121-8696
Mfr. Part No.LM35CAZ/NOPB
HK$25.593
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. 533-5878
Mfr. Part No.LM35CAZ/NOPB
HK$52.55
Each
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. 668-7265
Mfr. Part No.TC6501P095VCTTR
BrandMicrochip
HK$6.39
Each (In a Pack of 5)
units
Temperature Switch Open Drain - ±0.5°C Surface Mount 5 -55 °C -55 → +135 °C +135 °C 2.7 V 5.5 V SOT-23 2.95mm 1.1mm
RS Stock No. 865-2407
Mfr. Part No.Si7055-A20-IM
HK$9.597
Each (In a Pack of 10)
units
Temperature Digital Serial-I2C ±0.5°C Surface Mount 6 -40 °C -40 → +125 °C +125 °C 1.9 V 3.6 V DFN 3mm 0.8mm
RS Stock No. 912-2847
Mfr. Part No.MCP9700-E/TO
BrandMicrochip
HK$1.668
Each (In a Bag of 1000)
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. 403-620
Mfr. Part No.MCP9700-E/TO
BrandMicrochip
HK$1.888
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. 169-0096
Mfr. Part No.SI7055-A20-IM
HK$9.01
Each (In a Tube of 100)
units
Temperature Digital Serial-I2C ±0.5°C Surface Mount 6 -40 °C -40 → +125 °C +125 °C 1.9 V 3.6 V DFN 3mm 0.8mm
RS Stock No. 144-5787
Mfr. Part No.TC6501P095VCTTR
BrandMicrochip
HK$4.744
Each (On a Reel of 3000)
units
Temperature Switch Open Drain - ±0.5°C Surface Mount 5 -55 °C -55 → +135 °C +135 °C 2.7 V 5.5 V SOT-23 2.95mm 1.1mm
RS Stock No. 786-1237
Mfr. Part No.MAX6682MUA+
BrandMaxim
HK$32.365
Each (In a Pack of 2)
units
Temperature - SPI 1.5°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C -0.3 V 6 V μMAX 3.1mm 0.95mm
RS Stock No. 165-9406
Mfr. Part No.MAX6682MUA+
BrandMaxim
HK$24.871
Each (In a Tube of 50)
units
Temperature - SPI 1.5°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C -0.3 V 6 V μMAX 3.1mm 0.95mm
RS Stock No. 727-6226
Mfr. Part No.SHT25
BrandSensirion
HK$99.74
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. 161-4580
Mfr. Part No.HPP805A031
HK$321.24
Each (In a Box of 150)
units
Humidity Sensor Voltage Analogue ±5%RH Through Hole 3 -40 °C -40 → +60 °C +60 °C 3 V 10 V dc - 11.4mm 59.5mm
RS Stock No. 146-2585
Mfr. Part No.SHT25
BrandSensirion
HK$56.045
Each (On a Reel of 400)
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. 893-7247
Mfr. Part No.HPP805A031
HK$416.41
Each
units
Humidity Sensor Voltage Analogue ±5%RH Through Hole 3 -40 °C -40 → +60 °C +60 °C 3 V 10 V dc - 11.4mm 59.5mm
RS Stock No. 667-5271
Mfr. Part No.SHT75
BrandSensirion
HK$356.34
Each
units
Temperature & Humidity Digital Serial 1.8% Through Hole 4 -40 °C -40 → +123.8 °C +123.8 °C 2.4 V 5.5 V SIP 5.08mm 13.5mm
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