TE Connectivity HPP845E031R5 Temperature and Humidity Sensor, 0 to 100% RH, -40°C to 125°C, I2C Digital, DFN-6, 1.5 to 3.6V

Name: TE Connectivity HPP845E031R5 Temperature and Humidity Sensor, 0 to 100% RH, -40°C to 125°C, I2C Digital, DFN-6, 1.5 to 3.6V
Brand: TE Connectivity
SKU: SENS-3488
Price: 144.00 INR
Availability: OutOfStock

₹144.00 (Inclusive of all taxes)

Out of Stock

The TE Connectivity HPP845E031R5 is a fully calibrated digital temperature and humidity sensor in a DFN-6 package, featuring an I2C interface for direct integration with microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32. It operates from 1.5 to 3.6V, making it ideal for low-power, space-constrained designs requiring precise environmental monitoring.

Features

Integrated digital sensor measuring temperature (-40°C to +125°C) and relative humidity (0 to 100% RH).
I2C digital interface for easy connection to microcontrollers and single-board computers.
Ultra-low power operation from a 1.5V to 3.6V supply, optimized for battery-powered devices.
Compact DFN-6 package (3 x 3 x 0.9 mm) suitable for automated, reflow-solderable assembly.
Factory calibrated with linearized digital output, ensuring high accuracy and interchangeability.

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Description

The HPP845E031R5 from TE Connectivity is a next-generation, MEMS-based environmental sensor combining precise humidity and temperature measurement in a single, miniature DFN package. It utilizes a capacitive polymer sensing element for humidity and a band-gap sensor for temperature, delivering fully calibrated and linearized digital signals via a standard I2C communication bus. This design eliminates the need for signal conditioning circuitry, simplifying system integration.

Engineered for reliability in demanding OEM applications, the sensor features low power consumption, adjustable measurement resolution, and built-in checksum functionality for robust data communication. An optional PTFE filter/membrane variant is available to provide IP67-rated protection against dust and moisture ingress, maintaining sensor performance in challenging environments. Its fast response time and instantaneous recovery from condensation make it suitable for real-time monitoring and control systems.

Key Features

Fully Digital I2C Output: Provides calibrated digital readings for both relative humidity and temperature, simplifying microcontroller interfacing.
Wide Operating Ranges: Measures from -40°C to +125°C and 0 to 100% relative humidity for versatile application coverage.
Ultra-Low Voltage Operation: Functions from 1.5V to 3.6V, enabling use in single-cell battery and low-power IoT designs.
Miniature DFN-6 Footprint: Compact 3 x 3 x 0.9 mm surface-mount package saves valuable PCB space.
Factory Calibrated & Interchangeable: Each sensor is individually tested and calibrated, ensuring consistent accuracy without field recalibration.
Robust Communication: Includes a checksum function and optional PTFE membrane for protected, reliable operation in humid or dusty conditions.
Automated Assembly Compatible: Lead-free, reflow-solderable construction suitable for high-volume production lines.
Fast Response & Recovery: Delivers quick measurement updates and rapid desaturation after exposure to high humidity.

Applications

HVAC and building automation systems for climate control and energy management.
Portable medical devices and diagnostic equipment requiring stable environmental monitoring.
Industrial printers and process control systems to monitor and adjust for ambient conditions.
Smart home appliances, including humidifiers, dehumidifiers, and air purifiers.
IoT sensor nodes and wearable electronics for environmental data logging.

Technical Specifications

Manufacturer Part Number	HPP845E031R5
Brand	TE Connectivity
Sensor Type	Humidity & Temperature
Humidity Range	0 to 100% RH
Temperature Range	-40°C to +125°C
Supply Voltage	1.5 V to 3.6 V DC
Communication Interface	I2C Digital
Package Type	DFN-6
Dimensions (L x W x H)	3.0 x 3.0 x 0.9 mm
Calibration	Factory Calibrated
Operating Temperature	-40°C to +125°C
Protection Option	PTFE Membrane (for IP67 rating)

Frequently Asked Questions

What is the supply voltage range for the HPP845E031R5 sensor?

The HPP845E031R5 operates from 1.5V to 3.6V DC. This ultra-low voltage range makes it specifically suitable for single-cell battery applications, low-power IoT devices, and other energy-constrained designs without requiring a voltage regulator.

How do I interface this sensor with an Arduino or Raspberry Pi?

The sensor communicates via a standard I2C interface. Connect the SDA and SCL pins to your microcontroller's corresponding I2C pins, along with VCC (1.5-3.6V) and GND. Use readily available libraries for TE Connectivity or MEAS HTU21D sensors, as the protocol is compatible, to read digital humidity and temperature values.

Is the sensor calibrated, and does it require field calibration?

Yes, each HPP845E031R5 sensor is factory calibrated and tested. The digital output is fully linearized, meaning no field calibration is required under standard conditions, ensuring accurate measurements and unit-to-unit interchangeability in your designs.

What is the difference between the standard and 'F' variant of this sensor?

The 'F' variant includes an integrated PTFE filter/membrane over the sensor opening. This membrane provides IP67-rated protection against dust and water ingress, making the sensor suitable for harsh or condensing environments while maintaining fast response times. The standard version does not have this protective filter.

What is the physical size and package type of this sensor?

The sensor is housed in a miniature DFN-6 (Dual Flat No-lead) surface-mount package measuring just 3.0 mm x 3.0 mm x 0.9 mm. Its compact footprint and reflow-solderable design are intended for automated PCB assembly in space-constrained applications.