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. 173-2745
Mfr. Part No.SI7020-A20-GM1
$4.24
Each (On a Tape of 100)
units
Temperature & Humidity Digital Serial-I2C ±0.4 °C, ±4 %RH Surface Mount 6 -40 °C -40 → +85 °C +85 °C 1.9 V 3.6 V DFN 3mm 0.75mm
RS Stock No. 194-2931
Mfr. Part No.MLX90614ESF-AAA-000-TU
BrandMelexis
$19.308
Each (In a Tube of 55)
units
Temperature PWM SMBus ±0.5°C Through Hole 4 -40 °C -40 → +85 °C +85 °C - 5 V TO-39 - 4.1mm
RS Stock No. 818-4702
Mfr. Part No.TMP441AIDCNT
$3.30
Each (In a Pack of 5)
units
Temperature Analogue Serial-I2C, SMBus ±1°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V SOT-23 3mm 1.3mm
RS Stock No. 194-2938
Mfr. Part No.MLX90614ESF-BAA-000-TU
BrandMelexis
$19.308
Each (In a Tube of 55)
units
Temperature PWM SMBus ±0.5°C Through Hole 4 -40 °C -40 → +85 °C +85 °C - 3 V TO-39 - 4.1mm
RS Stock No. 187-9308
Mfr. Part No.HPP845E131R4
$10.455
Each (In a Pack of 2)
units
- Digital I2C ±0.3 °C, ±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. 177-6867
Mfr. Part No.MAX6576ZUT+T
$1.86
Each (On a Reel of 2500)
units
Temperature PWM 1-Wire ±0.8°C Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V SOT-23 3mm 1.3mm
RS Stock No. 196-1898
Mfr. Part No.STEVAL-MKI203V1K
$55.87
Each
units
Temperature - - - - - - - - - - - - -
RS Stock No. 681-0406
Mfr. Part No.STCN75DS2F
$1.33
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. 169-1844
Mfr. Part No.STS31-DIS
BrandSensirion
$1.38
Each (On a Reel of 2500)
units
Temperature Digital Serial-I2C ±0.3°C Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 823-9329
Mfr. Part No.TMP75CID
$2.90
Each (In a Pack of 5)
units
Temperature Digital Serial-I2C, SMBus ±1°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 1.4 V 3.6 V SOIC 5mm 1.5mm
New
RS Stock No. 203-6434
Mfr. Part No.HIH6131-000-001
BrandHoneywell
$19.13
Each
units
Temperature & Humidity Digital Serial-SPI ±5% Surface Mount 8 - -25 → 85 °C - - - SOIC - -
RS Stock No. 146-0348
Mfr. Part No.LM75ADP,118
BrandNXP
$0.396
Each (On a Reel of 100)
units
Temperature Digital Serial-I2C ±3°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 2.8 V 5.5 V TSSOP 3.1mm 0.95mm
New
RS Stock No. 203-6367
Mfr. Part No.HIH8130-021-001
BrandHoneywell
$10.68
Each (In a Pack of 2)
units
Temperature & Humidity Digital Serial-I2C ±2% Surface Mount 8 - -40 → 125 °C - - - SOIC - -
RS Stock No. 183-7217
Mfr. Part No.BPS230-D3P0-S10E
BrandBourns
$3.649
Each (On a Reel of 3000)
units
- Digital I2C ±3%RH Surface Mount 6 -40 °C -40 → +105 °C +105 °C -0.3 V 7 V SMD 2mm 0.75mm
RS Stock No. 535-9846
Mfr. Part No.LM50BIM3/NOPB
$2.83
Each (In a Pack of 5)
units
Temperature Voltage Analogue ±2°C Surface Mount 3 -25 °C -25 → +100 °C +100 °C 4.5 V 10 V SOT-23 2.92mm 0.93mm
New
RS Stock No. 203-6360
Mfr. Part No.HIH6030-021-001
BrandHoneywell
$7.763
Each (On a Reel of 1000)
units
Temperature & Humidity Digital I2C ±4.5% Surface Mount 8 - -40 → 100 °C - - - SOIC - -
RS Stock No. 187-9320
Mfr. Part No.G-TPMO-101
$23.84
Each
units
Temperature Digital I2C ±3°C Through Hole 4 -20 °C -20 → +85 °C +85 °C 1.68 V 3.6 V TO - 4.3mm
RS Stock No. 824-6548
Mfr. Part No.TC74A5-3.3VCTTR
BrandMicrochip
$1.33
Each (In a Pack of 10)
units
Temperature Digital Serial-I2C, SMBus ±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. 843-1825
Mfr. Part No.HDC1008YPAT
$8.70
Each (In a Pack of 2)
units
Temperature & Humidity Digital Serial-I2C ±4% Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V BGA 2.07mm 0.41mm
RS Stock No. 190-8073
Mfr. Part No.DS1722U+
$4.58
Each (In a Pack of 5)
units
Temperature Digital Serial-3 Wire, SPI ±2°C Surface Mount 8 -55 °C -55 → +125 °C +125 °C 1.8 (Digital) V, 2.65 (Analogue) V 5.5 (Analogue) V, 5.5 (Digital) V μMax 3.1mm 0.95mm
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