ESP8266EX SMD IC QFN32-pin: Features, Datasheet,Pinout, and Application
TxRx + MCU 2.4GHz 2.5V~3.6V I2C, I2S, SPI, UART 54Mbps 50mA~56mA - Receiving 120mA~170mA - Transmitting 8 32-VFQFN Exposed Pad









TxRx + MCU 2.4GHz 2.5V~3.6V I2C, I2S, SPI, UART 54Mbps 50mA~56mA - Receiving 120mA~170mA - Transmitting 8 32-VFQFN Exposed Pad
ESP8266EX is an RF/IF and RFID. This article is going to introduce pinout, applications, features, and more details about ESP8266EX.

ESP8266EX Fun With Relay Module, Home Assistant & MQTT
What is the ESP8266EX?
Espressif’s ESP8266EX delivers a highly integrated Wi-Fi SoC solution to meet users’ continuous demands for efficient power usage, compact design, and reliable performance in the Internet of Things industry. ESP8266EX integrates antenna switches, RF balun, power amplifier, low noise receive amplifier, filters, and power management modules. The compact design minimizes the PCB size and requires minimal external circuitries.
ESP8266EX Features
• Fast switch between sleep and wake-up mode for energy-efficient purpose;
• Adaptive radio biasing for low-power operation
• Advanced signal processing
• Spur cancellation and RF co-existence mechanisms for common cellular, Bluetooth,
DDR, LVDS, LCD interference mitigation.
Specifications
- TypeParameter
- Factory Lead Time4 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
32-VFQFN Exposed Pad - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - Published2015
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - TypeTxRx + MCU
- Max Operating Temperature
The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
125°C - Min Operating Temperature
The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.
-40°C - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
2.5V~3.6V - Frequency
In electronic components, the parameter "Frequency" refers to the rate at which a signal oscillates or cycles within a given period of time. It is typically measured in Hertz (Hz) and represents how many times a signal completes a full cycle in one second. Frequency is a crucial aspect in electronic components as it determines the behavior and performance of various devices such as oscillators, filters, and communication systems. Understanding the frequency characteristics of components is essential for designing and analyzing electronic circuits to ensure proper functionality and compatibility with other components in a system.
2.4GHz - Protocol
In electronic components, the parameter "Protocol" refers to a set of rules and standards that govern the communication between devices. It defines the format, timing, sequencing, and error checking methods for data exchange between different components or systems. Protocols ensure that devices can understand and interpret data correctly, enabling them to communicate effectively with each other. Common examples of protocols in electronics include USB, Ethernet, SPI, I2C, and Bluetooth, each with its own specifications for data transmission. Understanding and adhering to protocols is essential for ensuring compatibility and reliable communication between electronic devices.
802.11b/g/n - Power - Output
Power Output in electronic components refers to the amount of electrical power that a device can deliver to a load. It is typically measured in watts and indicates the effectiveness of the component in converting electrical energy into usable work or signal. Power Output can vary based on the component's design, operating conditions, and intended application, making it a critical factor in the performance of amplifiers, power supplies, and other electronic devices. Understanding the Power Output helps in selecting appropriate components for specific applications to ensure efficiency and reliability.
20dBm - RF Family/Standard
The parameter "RF Family/Standard" in electronic components refers to the specific radio frequency (RF) technology or standard that the component complies with or is designed for. RF technology encompasses a wide range of frequencies used for wireless communication, such as Wi-Fi, Bluetooth, cellular networks, and more. Different RF standards dictate the frequency bands, modulation techniques, data rates, and other specifications for communication systems. Understanding the RF family/standard of a component is crucial for ensuring compatibility and optimal performance in RF applications.
WiFi - Sensitivity
Sensitivity in electronic components refers to the degree to which the output of a device responds to changes in input. It indicates how effectively a component translates a specific input signal into an observable output. High sensitivity means that even small variations in input can produce significant changes in output, making the device more responsive to signals. Sensitivity is crucial in applications where precise measurements or signal detection are required.
-91dBm - Data Rate (Max)
Data Rate (Max) refers to the maximum rate at which data can be transferred or processed within an electronic component or device. It is typically measured in bits per second (bps) or megabits per second (Mbps). This parameter is important for determining the speed and efficiency of data transmission or processing in various electronic applications such as computer systems, networking devices, and memory modules. A higher data rate indicates that the component is capable of handling larger volumes of data at a faster pace, leading to improved performance and responsiveness in electronic systems. It is crucial to consider the Data Rate (Max) specification when selecting electronic components to ensure compatibility and optimal functionality for specific applications.
54Mbps - Serial Interfaces
A serial interface is a communication interface between two digital systems that transmits data as a series of voltage pulses down a wire. Essentially, the serial interface encodes the bits of a binary number by their "temporal" location on a wire rather than their "spatial" location within a set of wires.
I2C, I2S, SPI, UART - Current - Receiving
Current - Receiving refers to the amount of electrical current that an electronic component or device is capable of accepting from a power source or another component in a circuit. It indicates the maximum current that can be safely received without causing damage or malfunction. This parameter is crucial for ensuring compatibility and reliability in electronic designs, as exceeding the rated receiving current can lead to overheating or failure of the component.
50mA~56mA - Current - Transmitting
Current - Transmitting is a parameter used to describe the maximum amount of electrical current that an electronic component can handle while in the transmitting mode. This parameter is crucial for components such as transistors, diodes, and integrated circuits that are involved in transmitting signals or power within a circuit. Exceeding the specified current transmitting rating can lead to overheating, component failure, or even damage to the entire circuit. Designers and engineers must carefully consider this parameter when selecting components to ensure the reliability and performance of the electronic system.
120mA~170mA - GPIO
GPIO stands for General Purpose Input/Output. It is a type of electronic pin found on microcontrollers, microprocessors, and other integrated circuits that can be configured to either input or output digital signals. GPIO pins can be used to connect and communicate with external devices such as sensors, LEDs, motors, and more. They provide a flexible way to interact with the physical world by allowing the device to both receive and send digital signals. GPIO pins can be programmed and controlled by software to perform various functions based on the specific requirements of the electronic system.
8 - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant
ESP8266EX Pinout

ESP8266EX Pinout
ESP8266EX Block Diagram

ESP8266EX Block Diagram
ESP8266EX CAD Model

ESP8266EX Symbol

ESP8266EX Footprint
ESP8266EX Applications
• Home appliances
• Home automation
• Smart plugs and lights
• Industrial wireless control
• Baby monitors
• IP cameras
• Sensor networks
• Wearable electronics
• Wi-Fi location-aware devices
• Security ID tags
• Wi-Fi position system beacons
ESP8266EX Manufacturer
Espressif Systems is a world-leading Internet-of-Things (IoT) company. They are an innovative team of chip-design specialists, software/firmware developers, and marketers. They are committed to providing some of the best IoT devices and software platforms in the industry. They also help their customers build their own solutions and connect with other partners in the IoT ecosystem. Their passion lies in creating state-of-the-art chipsets and enabling their partners to deliver great products. Espressif’s products are widely deployed in the tablet, OTT boxes, cameras, and IoT markets.
Datasheet PDF
- Datasheets :
Popularity by Region
Parts with Similar Specs
What’s the difference between ESP8285 and ESP8266EX?
ESP8285 and ESP8266EX are both WIFI chips, and the descriptions, features, and application fields are the same in all aspects, and there is no major difference.
Does ESP8266EX have recycling value?
Yes, SP8266EX have a recycling value
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