The HS3003 is a highly-accurate, fully-calibrated relative humidity and temperature sensor. The high accuracy, fast measurement response time, and long-term stability, along with the small package size, makes the HS3003 ideal for a wide number of applications from portable to harsh environments.

An integrated calibration and temperature compensation logic provides fully corrected RH and T values via a standard I²C output. The measured data is internally corrected and compensated for accurate operation over a wide range of temperature and humidity levels–user calibration is not required.


  • RH accuracy: ±2.8% RH typical
  • Fast RH response time (typical 6 seconds)
  • Temperature sensor accuracy: ±0.2°C typical (-10 to +80°C)
  • 14-bit resolution: 0.01% RH (typical)
  • Low power consumption: 1.0µA average (one RH+T measurement per second, 8-bit resolution, 1.8V supply)
  • Extended supply voltage: 2.3V to 5.5V




Type Title Date
Datasheet PDF 356 KB
Application Note PDF 131 KB
Application Note PDF 3.64 MB 日本語
Product Change Notice PDF 301 KB
Product Change Notice PDF 368 KB
Application Note PDF 129 KB
Application Note PDF 189 KB
Overview PDF 600 KB 日本語
Application Note PDF 192 KB
Product Change Notice PDF 99 KB
Application Note PDF 76 KB
Product Change Notice PDF 114 KB
12 items

Design & Development

Software & Tools

Sample Code

Sample Code

Type Title Date Date
Sample Code ZIP 2.25 MB
Application: IoT Applications
Function: Application Example, Communication Interface, Driver or Library
Sample Code ZIP 3.74 MB
Application: IoT Applications
Compiler: CC-RL, CC-RX, ICCRL78 Function: Application Example, Communication Interface, Driver or Library IDE: CS+, e2 studio, IAR EWRL78
Sample Code ZIP 2.93 MB
Application: Consumer Electronics, Industrial
Compiler: CC-RX, GNURX, ICCRX Function: Analog, Communication Interface, Driver or Library, OS IDE: CS+, e2 studio, IAR EWRX
3 items

Boards & Kits

Boards & Kits



Relative Humidity Sensors (RH Sensors)

A brief introduction to Renesas’ relative humidity sensors that offer high accuracy and fast measurement response times, enabling customers to improve overall system performance and feedback control. The humidity sensors feature excellent long-term stability as a result of a robust silicon carbide construction and an innovative design, improving useful lifetime and lowering effective cost.