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HDC2021DEBR

TIHDC2021DEBR

Texas Instruments
Humidity, Temperature 20 ~ 80% RH I2C ±3% RH 6 s Surface Mount
NRND21,298 in stock

Overview

The HDC2021DEBR is an integrated digital humidity and temperature sensor that provides high-accuracy measurements over a wide supply voltage range of 1.62V to 3.6V. It features a factory-installed polyimide tape over the sensor opening to protect the sensing element during automated assembly and harsh PCB cleaning processes. Designed for low-power operation, it consumes only 50nA in sleep mode and supports both one-shot and continuous measurement modes via an I2C interface.

Why Choose This Part

The device offers exceptional power efficiency with a typical sleep current of 50nA, significantly extending battery life in remote deployments. The integrated protective tape simplifies manufacturing by allowing the sensor to remain shielded during reflow and wash cycles. Additionally, its wide operating temperature range of -40C to +125C ensures reliability in demanding industrial environments.

Applications

Smart Home HVAC
Integration into thermostats and smart speakers for environmental monitoring and climate control automation.
White Goods
Moisture and temperature sensing in washers and dryers to optimize drying cycles and prevent mold growth.
Wireless Environmental Nodes
Ultra-low power consumption makes it ideal for battery-operated IoT sensors using LPWAN or BLE protocols.
HVAC Transmitters
Industrial-grade monitoring of humidity and temperature in building automation system ductwork.

Key Specifications

Output 14b
Accuracy +/-3% RH
Output Type I2C
Sensitivity 300mV/%RH
Sensor Type Humidity, Temperature
Mounting Type Surface Mount
Response Time 6 s
Humidity Range 20 ~ 80% RH
Package / Case 6-VDFN Exposed Pad
Voltage - Supply 1.62V ~ 3.6V
Operating Temperature -40degC ~ 125degC
Supplier Device Package 6-WSON (3x3)

Getting Started

Engineers can evaluate this sensor using the HDC2021EVM evaluation module and Texas Instruments GUI tools to visualize real-time data. The I2C interface is compatible with standard microcontrollers; use the 14-bit resolution setting for maximum precision. Ensure the PCB layout includes a thermal relief cutout around the sensor to improve response time and accuracy by minimizing heat transfer from the board.

Also Consider

SHT40 SENSensirion AG - Offers a smaller footprint and similar low-power performance but lacks the factory-installed protective tape for assembly protection.