The top 10 humidity sensors

Air humidity is an important factor to consider when designing an electronic device. Having too much humidity in the environment can cause condensation and corrosion, which can lead to anomalies in performance or even failures.

To prevent this, engineers use humidity sensors. These devices are used in systems deployed in humid environments, such as industrial control, instrumentation, climatology, and agriculture applications.

There are three common types of humidity sensors: capacitive, resistive, and thermal.

Capacitive humidity sensors are formed by a humidity-sensitive dielectric surrounded by at least two electrodes. Resistive humidity sensors, which are less sensitive than capacitive sensors, are formed by thick film printing techniques, which deposit noble precious metal electrodes on a glass or ceramic substrate. Thermal humidity sensors are often used in high-temperature environments like clothes dryers; they are normally formed by two matched thermistors, where the difference between their resistances measures the humidity.

The most popular humidity sensors on SnapEDA are from Honeywell (HIH series) and Sensirion (SHT series). When selecting a humidity sensor, it is important to consider the accuracy needed in terms of relative humidity (RH) (ex:  ±1.7 %RH, ±2 %RH, ±3 %RH,…), supply current (ex: 20 µA, 200 µA, 650 mA,…), size of the sensor, and supply voltage (ex: 2.3 V up to 5.5 V).

Let’s take a look at the top 10 Humidity Sensors on SnapEDA!

Note: this data was collected via SnapEDA’s analytics by looking at downloads from its part model library (symbols, footprints, and 3D models). Millions of parts are evaluated on SnapEDA annually, however, if a part isn’t in our database it will not show up on this list. We’re continually increasing coverage and will update this list periodically!

#10- HIH9120-021-001S by Honeywell

This thermoset polymer-based capacitive sensor offers accuracy: ±1.7% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature -40°C ~ 125°C, supply voltage: 2.3 V ~ 5.5 V, resolution 14  bit.

Average price across distributors at time of publish: $46.20 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#9- HIH6030-021-001 by Honeywell

This digital output capacitive sensor offers accuracy: ±4.5% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature -40°C ~ 100°C, supply voltage:  2.3V ~  5.5V, resolution 14  bit.

Average price across distributors at time of publish: $5.58 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#8- HIH7120-021-001S by Honeywell

This digital output capacitive sensor offers accuracy: ±3% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature -40°C ~ 100°C, supply voltage:  2.3V ~  5.5V, resolution 14  bit.

Average price across distributors at time of publish: $46.16 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

#7- HIH8130-021-001 by Honeywell

This digital output capacitive sensor offers accuracy: ±2% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature -40°C ~ 125°C, supply voltage:  2.3 V ~  5.5 V, resolution 14  bit.

Average price across distributors at time of publish: $4.99 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#6- HIH-5030-001 by Honeywell

This low voltage capacitive sensor offers accuracy: ±3% RH, humidity range 0 ~ 100% RH, operating supply current: 200  uA, operating temperature -40°C ~ 85°C, supply voltage: 2.7 V ~ 5.5 V, analog voltage output.

Average price across distributors at time of publish: $6.78 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#5- HIH6120-021-001 by Honeywell

This digital output capacitive sensor offers accuracy: ±4% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature -25°C ~ 85°C, supply voltage: 2.3 V ~ 5.5 V, resolution 14 bit.

Average price across distributors at time of publish: $9.38 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#4- SHT75 by Sensirion

This digital output capacitive sensor offers accuracy: ±1.8% RH, humidity range 0 ~ 100% RH, operating supply current: 28 uA, operating temperature -40°C ~ 123.8°C, supply voltage: 2.4 V ~ 5.5 V, resolution 12 bit.

Average price across distributors at time of publish: $27.73 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#3- HIH8120-021-001 by Honeywell

This digital output capacitive sensor offers accuracy: ±2% RH, humidity range 0 ~ 100% RH, operating supply current: 650 uA, operating temperature: -40°C ~ 125°C, supply voltage: 2.3 V ~ 5.5 V, resolution 14 bit.

Average price across distributors at time of publish: $6.25 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

 

#2- HIH-4000-001 by Honeywell

This thermoset polymer-based capacitive sensor offers accuracy: ±3.5% RH, humidity range 0 ~ 100% RH, operating supply current: 200 uA, operating Temperature: -40°C ~  85°C, supply voltage: 4 V ~ 5.8 V, analog voltage output.

Average price across distributors at time of publish: $14.73 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)

And the top Humidity Sensor on SnapEDA is…

 

#1- SHT15 by Sensirion

This digital output capacitive sensor offers accuracy: ±2% RH, humidity range 0 ~ 100% RH, operating supply current: 28 uA, operating temperature -40°C ~ 123.8°C, supply voltage: 2.4 V ~ 5.5 V, resolution 12 bit.

Average price across distributors at time of publish: $21.21 USD

 Download Symbol & Footprint on SnapEDA (Eagle, Altium, OrCAD, Allegro, KiCad, PADS, PCB123)