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. 548-4295
Mfr. Part No.HIH-4000-003
BrandHoneywell
$33.69
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. 169-7678
Mfr. Part No.HIH-4000-003
BrandHoneywell
$735.75
1 Tube of 25
Tube(s)
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. 146-2372
Mfr. Part No.HPP845E031R5
$2.10
Each (On a Reel of 5000)
units
Temperature & Humidity Digital Serial-I2C ±2%RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 1.5 V 3.6 V DFN 3mm 0.9mm
RS Stock No. 768-1463
Mfr. Part No.MCP9701T-E/TT
BrandMicrochip
$0.382
Each (On a Tape of 20)
units
Temperature Voltage Analogue ±4°C Surface Mount 3 -40 °C -40 → +125 °C +125 °C 3.1 V 5.5 V SOT-23 3.05mm 1.02mm
RS Stock No. 169-9938
Mfr. Part No.TSIC 306 TO92
$10.304
Each (In a Bag of 50)
units
Temperature Digital - ±0.3°C Through Hole 3 -50 °C -50 → +150 °C +150 °C 3 V 5.5 V TO-92 4.77mm 4.01mm
RS Stock No. 170-4328
Mfr. Part No.MCP9701T-E/TT
BrandMicrochip
$0.321
Each (On a Reel of 3000)
units
- - - - - - - - - - - - - -
RS Stock No. 169-9923
Mfr. Part No.MK33-W
$54.429
Each (In a Tray of 50)
units
- - - - Through Hole 2 +40 °C 40 → +190 °C +190 °C - 12 V - 10.8mm 0.8mm
RS Stock No. 103-1583
Mfr. Part No.LM335AZ
$0.958
Each (In a Bag of 2500)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -40 °C -40 → +100 °C +100 °C 2.95 V 3.91 V TO-92 5mm 5mm
RS Stock No. 738-6005
Mfr. Part No.TC74A5-5.0VAT
BrandMicrochip
$2.19
Each (In a Pack of 2)
units
Temperature Digital Serial-I2C, SMBus ±3°C Through Hole 5 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V TO-220 10.54mm 15.57mm
RS Stock No. 121-8022
Mfr. Part No.Tsic 306 TO92
$13.83
Each
units
Temperature Digital - ±0.3°C Through Hole 3 -50 °C -50 → +150 °C +150 °C 3 V 5.5 V TO-92 4.77mm 4.01mm
RS Stock No. 165-3459
Mfr. Part No.TC74A5-5.0VAT
BrandMicrochip
$1.93
Each (In a Tube of 50)
units
Temperature Digital Serial-I2C, SMBus ±3°C Through Hole 5 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V TO-220 10.54mm 15.57mm
RS Stock No. 714-7917
Mfr. Part No.LM335AZ
$2.452
Each (In a Pack of 5)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -40 °C -40 → +100 °C +100 °C 2.95 V 3.91 V TO-92 5mm 5mm
RS Stock No. 893-7146
Mfr. Part No.HPP845E031R5
$5.82
Each
units
Temperature & Humidity Digital Serial-I2C ±2%RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 1.5 V 3.6 V DFN 3mm 0.9mm
RS Stock No. 121-8002
Mfr. Part No.MK33-W
$77.78
Each
units
- - - - Through Hole 2 +40 °C 40 → +190 °C +190 °C - 12 V - 10.8mm 0.8mm
RS Stock No. 809-9367
Mfr. Part No.TMP36GRTZ-REEL7
$2.426
Each (In a Pack of 5)
units
Temperature Emitter Follower Voltage ±3°C Surface Mount 5 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V SOT-23 3mm 1.3mm
RS Stock No. 668-7209
Mfr. Part No.MCP9700T-E/TT
BrandMicrochip
$0.43
Each (In a Pack of 20)
units
Temperature Voltage Analogue ±1°C Surface Mount 3 -40 °C -40 → +125 °C +125 °C 2.3 V 5.5 V SOT-23 2.9mm 0.95mm
RS Stock No. 145-0364
Mfr. Part No.AD7414ARMZ-0
$4.28
Each (In a Tube of 50)
units
Temperature Open Drain Serial-I2C ±2°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
RS Stock No. 165-4885
Mfr. Part No.MCP9700T-E/TT
BrandMicrochip
$0.321
Each (On a Reel of 3000)
units
Temperature Voltage Analogue ±1°C Surface Mount 3 -40 °C -40 → +125 °C +125 °C 2.3 V 5.5 V SOT-23 2.9mm 0.95mm
RS Stock No. 538-8591
Mfr. Part No.AD7414ARMZ-0
$5.19
Each (In a Pack of 5)
units
Temperature Open Drain Serial-I2C ±2°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
RS Stock No. 160-3366
Mfr. Part No.TMP36GRTZ-REEL7
$1.423
Each (On a Reel of 3000)
units
Temperature Emitter Follower Voltage ±3°C Surface Mount 5 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V SOT-23 3mm 1.3mm
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