| Allicdata Part #: | 336-3143-ND |
| Manufacturer Part#: |
SI7021-A20-IM1 |
| Price: | $ 2.44 |
| Product Category: | Sensors, Transducers |
| Manufacturer: | Silicon Labs |
| Short Description: | SENS HUMI/TEMP 3.6V I2C 3% 6DFN |
| More Detail: | Humidity Temperature Sensor 0 ~ 100% RH I²C ±3% RH... |
| DataSheet: |  SI7021-A20-IM1 Datasheet/PDF |
| Quantity: | 1682 |
| 1 +: | $ 2.22390 |
| 25 +: | $ 2.13973 |
| 100 +: | $ 2.05739 |
| 1000 +: | $ 1.97196 |
Specifications
| Series: | -- |
| Packaging: | Cut Strip |
| Part Status: | Active |
| Sensor Type: | Humidity, Temperature |
| Humidity Range: | 0 ~ 100% RH |
| Output Type: | I²C |
| Output: | 12b |
| Accuracy: | ±3% RH |
| Response Time: | 18s |
| Sensitivity: | -- |
| Voltage - Supply: | 1.9 V ~ 3.6 V |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C |
| Package / Case: | 6-WDFN Exposed Pad |
| Supplier Device Package: | 6-DFN (3x3) |
Description
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Humidity and moisture sensors can be found in many industries today and are essential for a variety of applications that require accurate measuring of humidity and moisture. The SI7021-A20-IM1 is a popular humidity and moisture sensor with integrated temperature compensation for applications that would otherwise require an external temperature compensator. This article will discuss the application field and working principle of the SI7021-A20-IM1.The SI7021-A20-IM1 is a relative humidity (RH) and temperature sensor. It is designed to measure and quantify the amount of water vapor in the air, which is commonly referred to as “moisture content”. This sensor is suitable for use in a number of application fields, such as outdoor environment monitoring, industrial control systems, medical care equipment, and home appliances. The wide temperature range of this sensor (-40 to 85 degrees Celsius) makes it suitable for even extreme conditions. The sensor also has a high reliability and accurate performance, making it well suited for precision measurements.To understand the working principle of the SI7021-A20-IM1, it is important to explore how it measures relative humidity. This sensor uses two capacitors to measure humidity. A polymer film capacitance element measures humidity changes in the air. The element is coated with hygroscopic material which absorbs and holds a certain amount of moisture. When the air surrounding the element has a different humidity content, the capacitance of the element changes and this change is detected by the sensor.The SI7021-A20-IM1 also has integrated temperature compensation which helps to accurately measure relative humidity over a wide temperature range. Temperature compensation works by compensating the humidity measurements for the general trend of the temperature. For instance, if the air is warmer, the relative humidity is lower, so the sensor will account for this and adjust the measurement accordingly. This ensures that accuracy of the humidity measurements is not compromised by changes in temperature.In addition to its temperature compensation feature, the SI7021-A20-IM1 also has an excellent long-term stability rating and a high level of sensitivity which make it ideal for precision measurements. The sensor also has a fast response time and an excellent signal to noise ratio.Overall, the SI7021-A20-IM1 is an accurate and reliable humidity and moisture sensor. It is suitable for a wide range of applications and has excellent temperature compensation features and long-term stability which make it ideal for precision measurements.
The specific data is subject to PDF, and the above content is for reference
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