MLX90614ESF-BCI-000-SP Infrared Temperature Sensor

Updated: 2026-07-24

Overview

The MLX90614ESF-BCI-000-SP is a high-performance infrared temperature sensor module developed by Melexis. It utilizes thermopile technology to measure the temperature of objects without direct contact, making it suitable for applications where contamination or physical interference must be avoided. The sensor operates on the principle of detecting infrared radiation emitted by objects. It features a digital output via I2C interface, enabling easy integration with microcontrollers and other digital systems. Its compact size and low power consumption make it ideal for portable and battery-powered devices.

Structure and Working Principle

The MLX90614ESF-BCI-000-SP consists of a thermopile sensor, signal conditioning circuitry, and a digital signal processor (DSP). The thermopile detects infrared radiation from the target object, which is then converted into a voltage signal. The DSP processes this signal to calculate the object's temperature. A key component of the sensor is its built-in reference temperature sensor, which compensates for ambient temperature variations to ensure accurate measurements. The sensor's optical system is designed to focus infrared radiation onto the thermopile, enhancing measurement precision.

Key Features

One of the standout features of the MLX90614ESF-BCI-000-SP is its high accuracy, with typical measurement errors of ±0.5°C in medical-grade applications. It offers a wide measurement range, typically from -70°C to +380°C, making it versatile for various use cases. The sensor's low power consumption, typically around 1.5mA during operation, makes it suitable for battery-powered devices. Additionally, its digital output simplifies integration with modern electronic systems, reducing the need for complex analog signal processing.

Application Areas

The MLX90614ESF-BCI-000-SP is widely used in industrial automation for monitoring equipment temperature and preventing overheating. In the medical field, it is employed in non-contact thermometers for measuring body temperature. Consumer applications include smart home devices, such as HVAC systems and kitchen appliances. The sensor is also used in automotive systems for monitoring cabin temperature and detecting overheating components.

Maintenance and Precautions

To maintain optimal performance, the sensor's lens should be kept clean and free from obstructions. Accumulated dust or debris can affect measurement accuracy. The sensor should be stored in a dry environment to prevent moisture damage. When installing the sensor, avoid placing it near strong electromagnetic fields or heat sources that could interfere with measurements. Regular calibration checks are recommended for applications requiring high precision.

B2B Procurement Guide

When procuring the MLX90614ESF-BCI-000-SP in bulk, consider working with authorized distributors or direct manufacturers to ensure product authenticity and consistent quality. Request samples for testing before placing large orders to verify performance specifications. Evaluate suppliers based on lead times, minimum order quantities, and after-sales support. For custom requirements, such as specific calibration ranges or packaging, inquire about OEM services. Competitive pricing can often be negotiated for volume purchases.