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. 535-9458
Mfr. Part No.LM35DT/NOPB
$5.288
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. 786-5554
Mfr. Part No.SHT21
BrandSensirion
$11.54
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. 866-0247
Mfr. Part No.LM35DT/NOPB
$3.36
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. 159-4685
Mfr. Part No.LM335Z
$0.77
Each
units
Temperature Voltage Analogue ±5°C Through Hole 3 -40 °C -40 → +100 °C +100 °C 2.92 V 3.04 V TO-92 5mm 5.03mm
RS Stock No. 667-5278
Mfr. Part No.SHT71
BrandSensirion
$43.64
Each
units
Temperature & Humidity Digital Serial 3% Through Hole 4 -40 °C -40 → +123.8 °C +123.8 °C 2.4 V 5.5 V SIP 5.08mm 13.5mm
RS Stock No. 168-6042
Mfr. Part No.LM335Z
$0.27
Each (In a Bag of 2500)
units
Temperature Voltage Analogue ±5°C Through Hole 3 -40 °C -40 → +100 °C +100 °C 2.92 V 3.04 V TO-92 5mm 5.03mm
RS Stock No. 811-5595
Mfr. Part No.LM35DZ/LFT1
$2.578
Each (In a Pack of 10)
units
Temperature Voltage Analogue ±2°C Through Hole 3 0 °C 0 → 100 °C +100 °C 4 V 30 V TO-92 5.21mm 5.34mm
RS Stock No. 121-9338
Mfr. Part No.LM35DZ/LFT1
$1.21
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. 893-7082
Mfr. Part No.HPP801A031
$10.48
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. 738-7051
Mfr. Part No.MCP9701A-E/TO
BrandMicrochip
$0.497
Each (In a Pack of 10)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -10 °C -40 → +125 °C +125 °C 3.1 V 5.5 V TO-92 5.21mm 5.33mm
RS Stock No. 170-4357
Mfr. Part No.HPP801A031
$4.355
Each (In a Box of 1200)
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. 912-2856
Mfr. Part No.MCP9701A-E/TO
BrandMicrochip
$0.367
Each (In a Bag of 1000)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -10 °C -40 → +125 °C +125 °C 3.1 V 5.5 V TO-92 5.21mm 5.33mm
RS Stock No. 770-9892
Mfr. Part No.MCP9808-E/MS
BrandMicrochip
$1.818
Each (In a Pack of 4)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.95mm
RS Stock No. 912-7303
Mfr. Part No.TMP01FSZ
$13.124
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. 106-7069
Mfr. Part No.AD590KH
$27.92
Each (In a Tube of 100)
units
Temperature Current - ±2.5°C Through Hole 3 -55 °C -55 → +150 °C +150 °C 4 V 30 V TO-52 5.84mm 3.81mm
RS Stock No. 412-882
Mfr. Part No.TMP01FSZ
$15.74
Each
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. 133-0679
Mfr. Part No.LMT01LPG
$3.16
Each (In a Pack of 5)
units
Temperature Digital 1-Wire ±0.7°C Surface Mount 2 -50 °C -50 → +150 °C +150 °C 2 V 5.5 V TO-92 4.1mm 3.25mm
RS Stock No. 889-5932
Mfr. Part No.MCP9808-E/MS
BrandMicrochip
$1.44
Each (In a Tube of 100)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.95mm
RS Stock No. 522-8641
Mfr. Part No.AD590KH
$36.55
Each
units
Temperature Current - ±2.5°C Through Hole 3 -55 °C -55 → +150 °C +150 °C 4 V 30 V TO-52 5.84mm 3.81mm
RS Stock No. 168-5009
Mfr. Part No.LMT01LPG
$1.65
Each (On a Reel of 1000)
units
Temperature Digital 1-Wire ±0.7°C Surface Mount 2 -50 °C -50 → +150 °C +150 °C 2 V 5.5 V TO-92 4.1mm 3.25mm
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