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Home > Products > Sensors, Transducers > Temperature Sensors > Analog and Digital Output

Melexis Technologies NV MLX90614ESF-BCF-000-TU

Name: MLX90614ESF-BCF-000-TU
Brand: Melexis Technologies NV
SKU: MLX90614ESF-BCF-000-TU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MLX90614ESF-BCF-000-TU

Manufacturer:: Melexis Technologies NV

Category:: Analog and Digital Output

Package:: TO-39-4 Metal Can

Datasheet:: MLX90614ESF-BCF-000-TU.pdf

Description:: SENSOR DGTL -40C-85C TO39

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Product details

Overview

MLX90614ESF-BCF-000-TU from Melexis is a factory-calibrated, single-zone infrared thermometer IC in TO-39 metal can package, delivering ±0.5°C accuracy (0°C to +50°C), -70°C to +380°C object temperature range, and SMBus/PWM dual-output interface for non-contact thermal sensing in automotive and industrial systems.

For engineers reviewing the MLX90614ESF-BCF-000-TU datasheet, pinout, applications, or equivalent options, this page provides verified technical context, pin-level design meaning, real-world use cases, and validated alternative options for thermal measurement subsystems requiring medical-grade resolution, low-power operation, and isothermal stability.

Technical Context

The MLX90614ESF-BCF-000-TU integrates a thermopile detector and signal-conditioning ASSP in one TO-39 package, using a 17-bit ADC, low-noise chopper amplifier, and DSP-based FIR/IIR filtering to achieve 0.02°C measurement resolution in SMBus mode. Its internal state machine manages ambient (Ta) and object (To) temperature computation with dedicated RAM storage.

This variant operates at 3.0V supply (Bxx series), supports sleep mode (2–6 µA), includes programmable emissivity (0.1–1.0), and features factory-default SMBus communication (slave address 0x5A) with optional PWM output configurable for custom temperature ranges (e.g., -20°C to +120°C at 0.14°C resolution).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.6 V to 3.6 V - compatible with battery-powered or regulated 3V systems; no external regulator needed.
Object Temperature Range	-70°C to +380°C - enables broad industrial and automotive use including engine monitoring and HVAC control.
Ambient Temperature Range	-40°C to +85°C - specified for ESF grade; suitable for under-hood and indoor environmental sensing.
Accuracy (Ta/To)	±0.5°C at 0°C to +50°C - guaranteed only under isothermal conditions; requires thermal gradient mitigation in layout.
Output Resolution	0.02°C (SMBus), 0.14°C (PWM) - high-resolution digital output eliminates need for external ADC in many designs.
Interface	SMBus (10–100 kHz) + configurable PWM - dual-mode communication allows flexible host integration without protocol translation.
Power Consumption	1.3–2.5 mA active, 2–6 µA sleep - enables long-life battery operation in portable or wireless thermal sensors.

Pinout & Package

MLX90614ESF-BCF-000-TU uses the industry-standard 4-pin TO-39 metal can package (SF code), with hermetically sealed IR window and integrated long-wave pass optical filter (5.5 µm to 14 µm). The metal can must connect to VSS only; no other electrical connection is permitted per EMC and isothermal requirements.

Pin/Terminal	Circuit Role	Design Meaning
1: SCL / Vz	SMBus clock input / Zener clamp	Accepts 10–100 kHz SMBus clock; internal 5.7V zener not active in Bxx (3V) version - pin functions as pure input.
2: SDA / PWM	SMBus data I/O or PWM output	Configurable bidirectional pin: SMBus slave data line or open-drain/push-pull PWM output with user-defined temperature scaling.
3: VDD	Positive supply	3.0V nominal input (2.6–3.6V range); powers internal regulator, DSP, and EEPROM; no external decoupling beyond 100nF recommended.
4: VSS	Ground reference	Primary ground return; sole electrical connection allowed to TO-39 metal can - critical for thermal equilibrium and noise immunity.

Key Features

Feature	Design Value
Factory calibration	Pre-programmed Ta/To coefficients stored in EEPROM eliminate field calibration; valid across full -40°C to +85°C ambient range.
Programmable emissivity	16-bit EEPROM register (0x04) accepts ε = 0.1–1.0; enables accurate readings on non-blackbody surfaces (e.g., plastic, painted metal) without recalibration.
Thermal relay mode	PWM pin reconfigurable as thermostat output; user-set threshold triggers interrupt-capable alert without host polling.
Dual-zone capability	Hardware-ready for dual-zone variants (e.g., MLX90614xCH); current part is single-zone but shares identical signal chain and firmware architecture.
High-voltage adaptability	Supports 8–16V operation via external resistor-zener network - enables direct integration into automotive 12V systems without DC-DC converter.

Applications

Automotive Cabin Comfort Control	Industrial Moving-Part Monitoring
Use Scenario: Real-time cabin air temperature feedback for HVAC blower speed and blend door actuation in passenger vehicles. IC Role / Device Role / Timing Role: Non-contact ambient temperature sensor providing Ta data every 250 ms after POR, synchronized to vehicle bus wake-up cycles. Use Value: Eliminates contact-sensor drift and condensation errors; maintains ±0.5°C accuracy despite rapid cabin air changes and dashboard thermal gradients.	Use Scenario: Continuous surface temperature monitoring of conveyor belts, rollers, or motor housings in factory automation lines. IC Role / Device Role / Timing Role: Object temperature (To) measurement node interfaced via SMBus to PLC controller; configured for 100 ms refresh rate. Use Value: Detects overheating before mechanical failure; 380°C upper limit covers hot steel, rubber, or polymer processing without sensor saturation.
Medical-Grade Body Temperature Screening	Smart Appliance Thermal Safety
Use Scenario: Contactless forehead or tympanic temperature measurement in handheld clinical thermometers and kiosk-based fever detection. IC Role / Device Role / Timing Role: High-resolution To sensor operating in SMBus mode with 0.02°C output resolution and user-adjusted emissivity for skin (ε ≈ 0.97–0.98). Use Value: Meets clinical accuracy requirements within ±0.2°C (medical variant available); stable performance across 15–40°C human temperature range.	Use Scenario: Overtemperature protection in microwave ovens, coffee makers, and 3D printers to prevent component damage or fire hazard. IC Role / Device Role / Timing Role: Thermal relay configured on PWM pin to trigger cutoff at user-defined To threshold (e.g., 120°C), acting as hardware-level safety interlock. Use Value: Reduces BOM cost by replacing discrete comparator + thermistor; enables fail-safe shutdown independent of main MCU health.

Automotive Cabin Comfort Control

Industrial Moving-Part Monitoring

Use Scenario: Real-time cabin air temperature feedback for HVAC blower speed and blend door actuation in passenger vehicles.

IC Role / Device Role / Timing Role: Non-contact ambient temperature sensor providing Ta data every 250 ms after POR, synchronized to vehicle bus wake-up cycles.

Use Value: Eliminates contact-sensor drift and condensation errors; maintains ±0.5°C accuracy despite rapid cabin air changes and dashboard thermal gradients.

Use Scenario: Continuous surface temperature monitoring of conveyor belts, rollers, or motor housings in factory automation lines.

IC Role / Device Role / Timing Role: Object temperature (To) measurement node interfaced via SMBus to PLC controller; configured for 100 ms refresh rate.

Use Value: Detects overheating before mechanical failure; 380°C upper limit covers hot steel, rubber, or polymer processing without sensor saturation.

Medical-Grade Body Temperature Screening

Smart Appliance Thermal Safety

Use Scenario: Contactless forehead or tympanic temperature measurement in handheld clinical thermometers and kiosk-based fever detection.

IC Role / Device Role / Timing Role: High-resolution To sensor operating in SMBus mode with 0.02°C output resolution and user-adjusted emissivity for skin (ε ≈ 0.97–0.98).

Use Value: Meets clinical accuracy requirements within ±0.2°C (medical variant available); stable performance across 15–40°C human temperature range.

Use Scenario: Overtemperature protection in microwave ovens, coffee makers, and 3D printers to prevent component damage or fire hazard.

IC Role / Device Role / Timing Role: Thermal relay configured on PWM pin to trigger cutoff at user-defined To threshold (e.g., 120°C), acting as hardware-level safety interlock.

Use Value: Reduces BOM cost by replacing discrete comparator + thermistor; enables fail-safe shutdown independent of main MCU health.

Equivalent & Alternatives

The following parts are listed as comparable options for similar non-contact infrared temperature sensing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MLX90614ESF-ACC-000-TU	5.0V supply (Axx), no sleep mode, higher active current (1.3–2.5 mA), same TO-39 package and SMBus/PWM interface.	Better suited for fixed 5V systems with continuous operation; unsuitable for battery-powered devices requiring µA-level sleep.	Select when power source is stable 5V and thermal gradient control is less critical than cost or legacy compatibility.
AMG8833	8×8 thermal array (64 pixels), I²C interface only, 0.25°C accuracy, -20°C to +80°C object range, requires external optics and calibration.	Enables thermal imaging and hotspot localization; not a drop-in replacement - demands significant firmware and optical redesign.	Choose only when spatial temperature distribution matters more than single-point accuracy or compact TO-39 form factor.

Compared with MLX90614ESF-BCF-000-TU, the ACC variant trades sleep capability for 5V simplicity and broader industrial voltage tolerance, while AMG8833 shifts from precision point sensing to low-res thermal imaging - neither offers pin-to-pin or functional equivalence, but both serve adjacent thermal measurement needs with distinct trade-offs in resolution, power, and system complexity.

Availability

MLX90614ESF-BCF-000-TU is available at Aetrix Electronics and suitable for automotive cabin sensing, industrial moving-part monitoring, medical screening devices, and smart appliance thermal safety systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MLX90614ESF-BCF-000-TU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Melexis is a Belgian semiconductor company specializing in sensor ICs, including magnetic, infrared, and pressure sensors for automotive, industrial, and consumer markets.

The MLX90614 product line delivers factory-calibrated IR thermometry for non-contact temperature measurement in harsh environments, designed specifically for automotive-grade reliability, medical accuracy, and seamless integration into resource-constrained embedded systems.

FAQ

What is the operating temperature range for the MLX90614ESF-BCF-000-TU ambient sensor?

The MLX90614ESF-BCF-000-TU ambient temperature (Ta) operating range is -40°C to +85°C, as defined by its ESF grade designation. This rating applies to the silicon die and internal circuitry; sustained operation outside this range may cause permanent damage or calibration drift. The device remains functional within this envelope across its full supply voltage range (2.6 V to 3.6 V) and supports SMBus communication throughout.

Does the MLX90614ESF-BCF-000-TU support sleep mode, and how is it activated?

Yes, the MLX90614ESF-BCF-000-TU supports sleep mode with typical current draw of 2–6 µA. Sleep is enabled by writing the appropriate command to the Configuration Register 1 (address 0x05) via SMBus - bit 4 controls sleep entry, and wake-up occurs automatically on SCL activity or via external reset. Sleep mode is exclusive to Bxx (3V) variants like the MLX90614ESF-BCF-000-TU and is not available in Axx (5V) versions.

Can the MLX90614ESF-BCF-000-TU measure human body temperature accurately?

The MLX90614ESF-BCF-000-TU achieves ±0.5°C accuracy from 0°C to +50°C under isothermal conditions, making it suitable for general body temperature screening. For clinical-grade use, Melexis offers a medical-accuracy variant (e.g., MLX90614xxx-BCI) with ±0.2°C tolerance near 37°C. Accuracy of the MLX90614ESF-BCF-000-TU depends critically on proper emissivity setting (ε ≈ 0.98 for skin) and minimizing thermal gradients across the TO-39 package during measurement.

How is emissivity configured on the MLX90614ESF-BCF-000-TU?

Emissivity is stored in EEPROM address 0x04 as a 16-bit value: Emissivity = round(65535 × ε), where ε ranges from 0.1 to 1.0. It is written via SMBus using the standard EEPROM write sequence (erase before write). The MLX90614ESF-BCF-000-TU retains this setting across power cycles. Factory default is 1.0 (0xFFFF), corresponding to a blackbody; for human skin, 0xFF33 (ε = 0.98) is commonly used.

What is the default communication interface for the MLX90614ESF-BCF-000-TU at power-on?

The MLX90614ESF-BCF-000-TU defaults to SMBus mode at power-on reset (POR), with slave address 0x5A. The PWM function is disabled until explicitly enabled via EEPROM configuration register (0x02). This behavior is consistent across all MLX90614 variants and ensures immediate interoperability with standard SMBus hosts without requiring initial setup.

MLX90614ESF-BCF-000-TU Specifications

Product attributes: Attribute value

Manufacturer:: Melexis Technologies NV

Series:: -

Package/Case:: TO-39-4 Metal Can

Packaging:: Tube

Product Status:: Active

Sensor Type:: Digital, Infrared (IR)

Sensing Temperature - Local:: -40°C ~ 85°C

Sensing Temperature - Remote:: -70°C ~ 380°C (IR)

Output Type:: PWM, SMBus

Voltage - Supply:: 2.6V ~ 3.6V

Resolution:: 16 b

Features:: Sleep Mode

Accuracy - Highest (Lowest):: ±0.5°C (±4°C)

Test Condition:: 0°C ~ 60°C (120°C ~ 380°C)

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Through Hole

Grade:: -

Qualification:: -

Supplier Device Package:: TO-39

MLX90614ESF-BCF-000-TU FAQ

1.How can I place an order for MLX90614ESF-BCF-000-TU through Aetrix?

Please submit a Request for Quotation (RFQ) for MLX90614ESF-BCF-000-TU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MLX90614ESF-BCF-000-TU reliable?

The price and inventory of MLX90614ESF-BCF-000-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90614ESF-BCF-000-TU is usually 5 days.

3.What payment methods are accepted for MLX90614ESF-BCF-000-TU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90614ESF-BCF-000-TU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MLX90614ESF-BCF-000-TU?

MLX90614ESF-BCF-000-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MLX90614ESF-BCF-000-TU order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MLX90614ESF-BCF-000-TU?

For technical support, including MLX90614ESF-BCF-000-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90614ESF-BCF-000-TU requirements.

6.How does Aetrix verify that MLX90614ESF-BCF-000-TU is sourced from the original manufacturer or authorized distributors?

All MLX90614ESF-BCF-000-TU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MLX90614ESF-BCF-000-TU meets industry standards.

7.What is the process for return or replacement of MLX90614ESF-BCF-000-TU?

All MLX90614ESF-BCF-000-TU units undergo pre-shipment inspection (PSI). If there is an issue with MLX90614ESF-BCF-000-TU, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MLX90614ESF-BCF-000-TU part is unused and in its original packaging.

Return procedure for MLX90614ESF-BCF-000-TU:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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