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Bluetooth Transmitter PCB

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What is bluetooth transmitter PCB?

Bluetooth PCB technology is a communication technology that operates at a range of 2.4GHz.

It is a radio frequency range that makes use of the Wi-Fi technology.

The Bluetooth communication has a master device that is remotely connected to a maximum of seven slave devices.

bluetooth transmitter PCB
bluetooth transmitter PCB

bluetooth transmitter PCB

A Bluetooth transmitter circuit facilitates the transmission of music to the stereo. It also enables the pairing of your Bluetooth with other devices to allow you to enjoy wireless music. The circuit must have a charging system and a recyclable battery.

The transmitter circuit contains some components including LED indicators.

bluetooth transmitter PCB KIt

The Bluetooth circuit has a board kit that make sure you effectively play music or any other content that’s from your phone. That make wirelessly through advanced technology. The Bluetooth circuit board is available in three aspects

1.As a single entity.
2.With 65mm speakers.
3.With 100mm speakers.

bluetooth transmitter PCB KIt

Venture is one of the top Bluetooth transmitter PCB manufacturers in China as we produce a wide range of quality Bluetooth transmitter PCB in different types.

We can manufacture reliable, durable, and functional Bluetooth transmitter PCB for your applications.

Send us your inquiry!

Your Leading Bluetooth Transmitter PCB Supplier in China

Venture is a reliable manufacturer of Bluetooth transmitter PCB in China for more than 10 years. Venture Bluetooth transmitter PCB is manufactured for different applications.

  • Wireless Headsets and Earphones
  • Cordless Keyboards and Mouse

Venture can manufacture Bluetooth transmitter board with three critical components:

  • regulation voltage
  • sensor data
  • wireless transmission

Venture Bluetooth transmitter PCB can switch to play both roles receiver and transmitter. We can design Bluetooth transmitter PCB as support to use as a USB sound MIC and USB sound card. They also designed as a support to use with a battery.

As a leading manufacturer, we can produce Bluetooth transmitter PCB which is compatible with devices like PC, TV, iPod, CD player, MP3/MP4 player up to 10 meters working range.

Our Bluetooth transmitter PCB is an easy pairing with Bluetooth stereo, speakers, headphones, and other Bluetooth stereo audio enabled systems. They adopt high-performance and high sensitivity chip.

If you look for the best supplier for Bluetooth transmitter PCB, Venture is right near you to be chosen. We all have what you need and what you looking for.

Furthermore, if you need budget-saving rates from shipping rates, product rates, and many other offers, count on Venture.

Contact us now!

Bluetooth Transmitter PCB: The Ultimate FAQ Guide


This guide will answer all your questions on Bluetooth transmitter PCB.

So, if you have any question on Bluetooth transmitter PCB, you will find the answer right here.

Keep reading.

What Is Bluetooth Transmitter PCB Used For?

A Bluetooth transmitter PCB allows you to transfer data from a non-Bluetooth device to a Bluetooth-enabled device.

You can employ a Bluetooth transmitter circuit to connect your audio source to Bluetooth speakers for wireless music.

You find a charging system and a recyclable battery alongside components in the circuit, such as LED indicators.

Consequently, you can connect the transmitter to your device as soon as it is turned on.

You can also employ the Bluetooth transmitter PCB t transfer other data files to Bluetooth-enabled devices.

A small circuit is built into the cell to safeguard it from short circuit, over-discharge, over-charge voltage, and over-current.

Bluetooth transmisster PCB

Bluetooth Transmitter PCB

Is There Difference Between Bluetooth Transmitter PCB And Bluetooth Audio Adapter PCB?


You can also refer to the Bluetooth transmitter PCB as a Bluetooth audio adapter. It’s more official nomenclature.

Similarly, you can call a Bluetooth transmitter PCB a Bluetooth audio transmitter PCB.

Bluetooth audio adapter PCB

Bluetooth Audio Adapter PCB

How Does Bluetooth Transmitter PCB Vs. Bluetooth Receiver PCB Compare?

Bluetooth transmitter PCBs deliver data from devices with no Bluetooth capability to Bluetooth-enabled devices such as televisions, speakers, and head/earphones.

Contrarily, Bluetooth receiver PCBs receive data from devices with Bluetooth capability for those without.

You can employ a Bluetooth transmitter PCB for your television if it is not Bluetooth-enabled with Bluetooth-enabled headphones.

After that, your TV transmits data through the transmitter, allowing you to receive sound from your non-Bluetooth TV wirelessly.

Besides, you can use a Bluetooth receiver PCB to connect your non-Bluetooth speaker to your Bluetooth-enabled computer.

This way, you can hear sound transferred wirelessly to your speaker from your computer.

Bluetooth Receiver PCB

Bluetooth Receiver PCB

Is Bluetooth Transmitter PCB Compatible With Any Type Of Electronic Device?


You can employ your Bluetooth transmitter PCB with any electronic device that requires communication with another Bluetooth device.

Using a Bluetooth transmitter PCB, you can pair your television set, computer, or music player to a Bluetooth headset.

What Is The Transmission Range Of Bluetooth Transmitter PCB?

The transmission range of a Bluetooth transmitter PCB is dependent on its Bluetooth Bluetooth class. The main Bluetooth classes you find are:

  • Class 1 transmits at 100 mW across a 100-meter range.
  • Class 2 comprises many Bluetooth-enabled headsets/phones with a range of 10 meters while transmitting at 2.5 mW.
  • Class 3 transmits at a range of fewer than 10 meters with a power of 1 mW.

Does Bluetooth Transmitter PCB Support All The Bluetooth Versions?

Many Bluetooth transmitter PCBs are backward but not forward compatible.

This is to say. You can employ a Bluetooth transmitter PCB of version 5 with devices employing earlier Bluetooth versions.

However, pairing a Bluetooth transmitter PCB of version 3 with a recent device employing version 5 is unfeasible. Note that when you use a Bluetooth transmitter PCB with an earlier version device, you lose the improvements.

Are There Dual Function Bluetooth Transmitter PCBs?

Yes, there are.

You will find Bluetooth transmitter PCBs that possess dual functionality also as Bluetooth receiver PCBs. In this case, you can both send or receive data wirelessly via Bluetooth functionality.

What Are The Features Of Bluetooth Transmitter PCB?

Bluetooth is a wireless technology that allows devices to broadcast and receive radio signals. When you use your Bluetooth speaker for entertainment, it receives device audio via the Bluetooth transmitter PCB.

The Bluetooth transmitter PCB covers the sensor data for wireless transfer. Additionally, the board has a rechargeable battery and charging system.

The Bluetooth transmitter PCB also allows you to establish connections with other Bluetooth-enabled devices in the vicinity. The Bluetooth transmitter circuit board may have LED indicators that show the state of your device.

The circuit design allows the Bluetooth transmitter to remain in standby mode until receipt of a signal. The recyclable battery should be able to operate for lengthy periods.

Battery charging, audio amplification, voltage regulation, and Bluetooth are all choices on the Bluetooth transmitter PCB. The different sections of the main circuit board carry out the speaker’s other tasks.

Which Are The Key Components Of Bluetooth Transmitter PCB?

When employing a Bluetooth transmitter PCB, you find the following essential components: Regulated voltage, wireless connectivity, and sensor data.

Regulated voltage allows the detecting circuit and the microcontroller to receive power and strength. Regulated voltage controls the Bluetooth device’s electrical functions.

Sensor data encompasses the values 1, 2, 3, and 4 that flow throughout the Bluetooth PCB. Sensor data forms a crucial component of the Bluetooth transmitter network.

Wireless communication consists of a variety of electrical and programmable components. It aids in the transmission of Bluetooth programs to the mission device over the air.

Wireless communication works with other Bluetooth-enabled gadgets in the vicinity.

Components of Bluetooth transmitter PCB

Components of Bluetooth  Transmitter PCB

What Are The Suitable Bluetooth Transmitter PCB Materials?

When making Bluetooth Transmitter PCBs, you find the following materials suitable:

Rogers Material

The Rogers material is a unique form of PCB material that employs high-frequency matter.

Rogers material has high-temperature stability and high-quality dielectric constant qualities.

With Rogers material, you achieve a thermal expansion coefficient similar to copper foil, allowing you to reinforce the PTFE substrate.

For your Bluetooth transmitter PCB, some of the Rogers materials you can employ are Rogers 4350B, Rogers 0588, and Rogers 3010.


CEM refers to Composite Epoxy Materials, which consist of woven glass fabric and a non-woven glass core. In making CEM, these materials are mixed with synthetic epoxy glue.

CEM-3 shares properties with FR-4, which is the more common PCB material. However, CEM 3 has a white hue and is flame-retardant.

FR (Flame Retardant) 5

A reinforced glass fiber material and an epoxy resin adhesive make up the FR-5 substrate. It’s a thermosetting composite of fiberglass that comes in a mixed yellow-green-tan color.

The temperature of glass transition (Tg) of the FR-5 material is 160° C. FR-5 can operate to a maximum operating temperature of 140° C.

Furthermore, it performs remarkably well when soldering lead-free with outstanding mechanical qualities at high temperatures. It also possesses low dielectric loss and an excellent chemical resistance, absorbing nearly no moisture.


FR-4 is a flame-resistant composite material made out of woven glass fiber, and an epoxy resin glue with self-extinguishing properties. Glass epoxy in FR-4 is an adaptable high-pressure thermoset plastic layer with excellent strength-to-weight ratios.

Additionally, FR-4 uses Bluetooth transmitter PCB because of its low water absorption and high mechanical strength.

How Do You Make A Simple Bluetooth Transmitter Printed Circuit Board?

To make a Bluetooth circuit, you start by drawing a circuit diagram.

You can use design software such as Eagle or Altium to create the schematic.

After that, obtain the appropriate components that will assist you in completing the circuit based on your schematic. In the absence of a proper schematic diagram, your project will fail.

The user interface is something else to consider when building the Bluetooth circuit.

You find this is because the Bluetooth circuit is all about the user and how they utilize it for their needs.

Upon completion of schematic design, generate a Gerber file, which follows after the design verification.

You can build a Bluetooth transmitter circuit differently, but it typically includes a Bluetooth head start, amplifier, LEDs, switches, and encasing.

It is critical to ensure that cords do not overlap the head start because this limits Bluetooth range.

Furthermore, you should not install the system close to transmitters. You observe that the interaction causes interference which disrupts transmission.

Bluetooth Transmitter Printed Circuit Board

Bluetooth  Transmitter Printed Circuit Board

What Is The Common Transmission Mode Of Bluetooth Transmitter PCB?

Bluetooth is a wireless technology that allows devices to broadcast and receive radio signals. You can use a Bluetooth speaker to listen to music from your phone via the Bluetooth transmitter PCB.

The Bluetooth transmitter PCB covers the sensor data for wireless transfer. The PCB also has a rechargeable battery and charging system.

A Bluetooth transmitter PCB sends Bluetooth protocols to the intended device via waves in the air. You can also employ the Bluetooth transmitter in establishing connections with other Bluetooth-enabled devices in the vicinity.

The circuit of a Bluetooth transmitter PCB can be in standby mode until the transmitter receives a signal.

A Bluetooth receiver PCB allows you to accept a signal from a device with Bluetooth connectivity and deliver it to another.

The Bluetooth receiver PCB, which directs the functionalities, is usually built into the device.

An antenna on the Bluetooth receiver PCB receives the signal from your device.

The circuit board shares similarities to a Bluetooth speaker and includes an IC that handles the Bluetooth system. You can also get aspects such as voltage regulation and sound amplification on the circuit board.

How Do You Ensure Quality Control During Fabrication Of Bluetooth Transmitter PCB?

Quality control of the Bluetooth transmitter PCB ensures that the final product conforms to the required standards. When checking for quality control, you identify the faulty PCBs, identify their faults and rework them.

The following approaches can help you check for quality control during Bluetooth transmitter PCB fabrication:

Visual Inspection

Instruments such as a vernier caliper, gauge, and ruler allow you to conduct a visual inspection. During a visual inspection process on a Bluetooth transmitter PCB, you undertake the following procedures:

  • Check the surface roughness, warpage, and thickness of the Bluetooth transmitter PCB.
  • Examine the PCB’s aesthetics, assembly size, and electrical connectors.
  • Scrutinize the conductive pattern clarity, as well as the presence of short or open circuits.
  • Inspect the quality of the surface quality, such as pits, burrs, and pinholes.
  • Check the quality of coating and related aspects such as flux plating, its location, and color requirements.

Electrical Inspection

Under this procedure, you carry out two types of tests on your Bluetooth transmitter PCB:

  • Connecting Performance Test: You check for the conductivity of a conductive pattern using a multimeter in this test.
  • Insulating Performance Test: You examine the insulation performance of insulating resistors on similar or separate planes.

General Technological Inspection

You address the solderability and plate adhesion of your Bluetooth transmitter PCB in this test process. You examine the wetting performance of solder to conductive patterns in the first portion.

After that, you utilize plates in the second phase. In addition, you can employ different processes to inspect in greater detail, depending on the need.

Metalized Inspection

You commonly employ this method for Bluetooth transmitter PCBs with double or multiple layers. You find the quality of metalized vias many times is the cause of electric breakdowns on Bluetooth transmitter PCBs.

You carry out metalized inspection by inspecting the via and leads resistance to establish electoral performance. Here, you use open circuit and short circuit methods.

When carrying out metalized inspection, ensure a change in the via resistance ranges between 5% to 10%. It is also prudent in determining the pad’s ability to attach to metalized vias.

Which Is The Best Battery For Bluetooth Transmitter PCB?

Lithium-ion batteries are preferable for use in Bluetooth transmitter PCBs since they can last for long periods. You find that on a single charge, a lithium-ion battery can last up to 10 hours.

A little circuit board within the cell ensures the battery doesn’t overload or over-discharge. Additionally, the circuit also guards against short-circuiting the battery.

Where Can You Use Bluetooth Transmitter PCB?

Some common applications of the Bluetooth transmitter PCB are:

  • Bluetooth transmitter PCBs find use in most wireless headsets and earbuds to transmit both voice and audio signals.
    The Bluetooth transmitter PCB allows you to listen to your favorite music and converse over the Bluetooth connection using speech signals.
  • Bluetooth transmitter circuit boards allow you to make wireless connections of computer peripherals to your computer. You can link inputs and outputs such as printers, mice, keyboards, and scanners to your computer via a Bluetooth transmitter circuit.
    Bluetooth speakers incorporate a Bluetooth transmitter circuit board in the main circuit board of the wireless speakers. You find this board allows you to sync your Bluetooth speaker with your audio player or smartphone.
  • You can send music or films between devices via a Bluetooth transmitter circuit connection. The circuit allows you to send and receive multimedia material and other information.
  • Bluetooth transmitter PCBs find employment in different products in the IoT, allowing automatic synchronization and information exchange between various touchpoints.
    For instance, you can use your smartphone to monitor a greenhouse temperature via a Bluetooth transmitter circuit.

What Is The Transmitter Power Of Bluetooth Transmitter PCB?

Several aspects contribute to the calculation of a Bluetooth signal’s range and dependability over longer distances. Alongside radio spectrum and receiver sensitivity, you find transmitter power as one of the most important aspects.

Consider transmitter power to be the same as your voice’s volume when communicating. The farther away someone can catch your voice, the more energy you require to talk loudly.

There is a design tradeoff between range and power consumption when selecting a transmitter power level. When the transmitter power is higher, the better the signal’s chances of being heard across long distances.

You also find the effective range greater in such as scenario. However, raising the transmitter power increases your device’s power usage.

Bluetooth transmitter PCBs have a transmission powers range from -20 dBm (0.01 mW) to +20 dBm (0.01 mW) (100 mW).

Bluetooth Transmitter PCBs Broadcast In What Frequency Range?

Bluetooth is a type of wireless communication that connects devices via radiofrequency. The Bluetooth transmitter PCB broadcasts a frequency of 2.4 GHz.

There are 79 Bluetooth transmitter circuit signal transmission channels, ranging from 2.4 GHz to 2.4835 GHz. In addition, you have a 1 MHz frequency band spacing.

You observe that there is a primary device and a secondary device in the operation of Bluetooth devices. The former is also known as the master device, while the latter you connected to is slaves.

Which Are The Different Power Class Of Bluetooth Chips Used In Bluetooth Transmitter PCB?

The Bluetooth chips you employ in a Bluetooth transmitter PCB come in various power classes. The three major classes are as follows:

Class I

You employ these chips in the most powerful Bluetooth transmitter PCB devices. These chips run at 100mW (+20bB/m), receiving signals from up to 100 meters away with a clear line of sight (LOS).

Class II

Bluetooth chips run at 2.5mW (+4bB/m) and are intended for mid-range applications. Devices with Class II processors can receive signals from up to 10 meters away with a clear LOS.

Class III

This class constitutes the least powerful broadcast class of Bluetooth chips. They operate at 1mW (+0bB/m) and can receive signals up to a meter distance with a clear LOS.

What Are The Important Factors To Consider When Selecting a Bluetooth Transmitter PCB?

When selecting a Bluetooth transmitter PCB, it is worth considering the following factors:

Area Of Application

You can employ a Bluetooth transmitter PCB in only one of three ways at any given time. You can use the transmitter circuit for:

Transferring Files

The transaction between phone to phone, phone to computer, or vice versa emphasizes a transmitter’s function in file transmission. This technique of file transfer is straightforward because it does not require the use of a USB drive.


Tethering Bluetooth transmitter, PCBs links numerous devices together for sharing Wi-Fi or Hotspot. It provides a quick way to connect your laptop to the internet if your gadget is hotspot-enabled.

Streaming Audio

A Bluetooth transmitter PCB for audio streaming allows you to smoothly couple your devices with speakers. You find this is especially useful if your equipment lacks Bluetooth connectivity, such as desktop computers, laptops, and speakers.


The second factor to think about is compatibility which describes the suitability of your Bluetooth transmitter PCB to your application. You need to be aware that not every transmitter will be a perfect fit for your device. Thus double-checking is key.


There are two major types of Bluetooth transmitter PCBs: corded/wired Bluetooth transmitters PCBs and cordless/wireless Bluetooth transmitters PCBs. Corded Bluetooth transmitter PCBs connect to the device via a wire. While they’re simple to connect, you’ll need to select the correct adapter for your device.

Wireless transmitters are a more progressive sort of antenna. Their popular use is because you can connect them with almost any device without concerns about compatibility difficulties.

Specific Purposes

You have to think about the Bluetooth Transmitter PCB’s features when making a selection. Among them are the following:

Dual Functionality

Some Bluetooth transmitter PCBs can function as both a transmitter and a receiver. Such transmitters’ adaptability makes your job easier because you don’t have to look for additional tools for any function.

Range Of Transmission

The transmission range depends on the size of your connection. Regardless of the range you select, keep in mind that it can only be achieved in the absence of barriers in the way.

Number Of Devices Supported

You should look for a Bluetooth transmitter PCB that can connect to many devices and different types of gadgets.

Battery Life

Your Bluetooth transmitter PCB derives power from a battery. Consequently, you need to think about how long it will last and how much power it will use.

The battery life should be between 7 and 15 hours in ideal conditions. However, when you travel frequently, you’ll need a gadget with extended battery life.

Which Are The Applicable Audio Output Modes Of Bluetooth Transmitter PCB?

A Bluetooth transmitter PCB can also employ the following audio outputs on its circuit:


The main distinction between Aux (auxiliary) and Bluetooth is that the former is wireless while the latter is wired.

Any supplementary wired connection is an Aux (auxiliary) connection. However, it is mostly used for the 3.5 mm headphone jack. Bluetooth is a wireless standard you use to link peripheral devices like keyboards and speakers to a host, e.g., a computer.

Connecting a phone to a speaker system via an Aux connection is simple and perhaps faster. However, since you employ a cord, it limits the distance between the device and its host.

With Aux, you do not need a digital connection. A headphone jack connecting the audio source to a speaker’s or receiver’s Aux input is all you require.

Aux connections, unlike Bluetooth audio, require a wire, which might be misplaced or destroyed. Contrarily, Bluetooth, a wireless protocol, can allow free movement and its host.

Many connections reach about 33 feet, while others can top 300 feet or more. Furthermore, you can also make hands-free calls, which is not possible with Aux.


The RCA connector is an electrical connector that is extensively used to transmit audio and video information. The Radio Corporation of America introduced the design giving it the moniker RCA.

You refer to the male plug and female jack connectors as RCA plug and RCA jack, respectively. RCA jacks are frequently used in phono inputs.

Phono inputs are a set of input jacks on the back panel of a mixer or amplifier. You connect a phonograph or turntable, much like earlier radio sets.


The optical audio is, in fact, the TOSLINK (Toshiba Link), which is an optical fiber connector system. Its most common application is in consumer audio equipment.

It transports a digital audio stream from video game consoles and CD and DVD players to an AV receiver. The receiver can decode a channel pairing of uncompressed PCM audio without losing compressed wide sound like Dolby Digital.

A red light whose peak wavelength is 650 nm is the optical signal. Other optical wavelengths may be present depending on the type of modulated signal being transmitted.

What Is The Bluetooth Transmitter PCB Price?

The price of a Bluetooth transmitter PCB will vary depending on functionality, transmission range, and transmitter power.

You find devices with low range, for instance, will cost lower than those offering a wider transmission range.

You will find Bluetooth transmitter PCBs for less than ten dollars for basic functionality.

Otherwise, you can have transmitters with price tags reaching hundreds of dollars, offering you better features such as greater range.

At Venture Electronics, we offer a range of Bluetooth PCBs, depending on your unique requirements and specifications.

These include Bluetooth keyboard PCB, and Bluetooth module PCB, alongside Bluetooth transmitter PCB – contact us now.

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