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. 877-2744
Mfr. Part No.LM235Z
HK$9.22
Each (In a Pack of 10)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 5 V 40 V TO-92 - 5.33mm
RS Stock No. 110-6598
Mfr. Part No.HTS221TR
HK$27.075
Each (In a Pack of 2)
units
Temperature & Humidity Digital Analogue ± 0.5 (Temperature) °C, ± 3.5 (Humidity) % Surface Mount 6 -40 °C -40 → +120 °C +120 °C 1.7 V 3.6 V HLGA 2mm 0.9mm
RS Stock No. 166-0935
Mfr. Part No.HTS221TR
HK$19.105
Each (On a Reel of 8000)
units
Temperature & Humidity Digital Analogue ± 0.5 (Temperature) °C, ± 3.5 (Humidity) % Surface Mount 6 -40 °C -40 → +120 °C +120 °C 1.7 V 3.6 V HLGA 2mm 0.9mm
RS Stock No. 165-5485
Mfr. Part No.LM235Z
HK$8.603
Each (In a Bag of 1000)
units
Temperature Voltage Analogue ±1°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 5 V 40 V TO-92 - 5.33mm
RS Stock No. 578-825
Mfr. Part No.STLM20W87F
HK$5.724
Each (In a Pack of 5)
units
Temperature Voltage Analogue ±1.5°C Surface Mount 5 -55 °C -55 → +130 °C +130 °C 2.4 V 5.5 V SOT-323 2.2mm 1mm
RS Stock No. 168-5835
Mfr. Part No.STLM20W87F
HK$4.513
Each (On a Reel of 3000)
units
Temperature Voltage Analogue ±1.5°C Surface Mount 5 -55 °C -55 → +130 °C +130 °C 2.4 V 5.5 V SOT-323 2.2mm 1mm
RS Stock No. 168-6407
Mfr. Part No.STDS75DS2F
HK$5.654
Each (On a Reel of 1000)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
RS Stock No. 714-7917
Mfr. Part No.LM335AZ
HK$10.924
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. 168-6042
Mfr. Part No.LM335Z
HK$4.563
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. 168-5843
Mfr. Part No.STTS75M2F
HK$6.691
Each (On a Reel of 2500)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V SOIC 5mm 1.25mm
RS Stock No. 578-944
Mfr. Part No.STTS75M2F
HK$9.106
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V SOIC 5mm 1.25mm
RS Stock No. 168-6406
Mfr. Part No.STLM20DD9F
HK$4.513
Each (On a Reel of 3000)
units
Temperature Voltage Analogue ±1.5°C Surface Mount 4 -40 °C -40 → +85 °C +85 °C 2.4 V 5.5 V UDFN 1.3mm 0.48mm
RS Stock No. 165-7777
Mfr. Part No.STCN75DS2F
HK$4.916
Each (On a Reel of 1000)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
New
RS Stock No. 190-8476
Mfr. Part No.STTS751-1DP3F
HK$7.049
Each (In a Pack of 25)
units
Temperature Digital SMBus ±2.5% Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.25 V 3.6 V UDFN 2.05mm 0.5mm
RS Stock No. 168-6408
Mfr. Part No.STLM75DS2F
HK$5.066
Each (On a Reel of 1000)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
New
RS Stock No. 190-8454
Mfr. Part No.STTS751-1DP3F
HK$3.312
Each (On a Reel of 3000)
units
Temperature Digital SMBus ±2.5% Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.25 V 3.6 V UDFN 2.05mm 0.5mm
RS Stock No. 686-4986
Mfr. Part No.STLM75DS2F
HK$6.868
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm
RS Stock No. 103-1583
Mfr. Part No.LM335AZ
HK$4.50
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. 686-4973
Mfr. Part No.STLM20DD9F
HK$4.27
Each (In a Pack of 5)
units
Temperature Voltage Analogue ±1.5°C Surface Mount 4 -40 °C -40 → +85 °C +85 °C 2.4 V 5.5 V UDFN 1.3mm 0.48mm
RS Stock No. 686-4982
Mfr. Part No.STDS75DS2F
HK$6.144
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.7 V 5.5 V MSOP 3mm 0.85mm