Your Reputable Firing Board Manufacturer - PCBMay

PCBMay is a trusted firing board supplier since 2008. We have rich knowledge and experience in firing board design, firing board fabrication, and firing board assembly services.

  • Supply full range of firing board
  • Experienced technicians and engineers
  • More than 12 years firing board manufacturing experience
  • High-quality and efficiency
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PCBMay Firing Board is Your Best Choice for Your Project

If you require a firing board for your project, always rely on PCBMay. We have strong R&D, expert engineers, and technicians with more than 15 years of experience in this industry. Our firing board is manufacture with more excellent features and advanced functions. As your reliable manufacturer, we provide all types of firing boards for your specific requirements. Please message us for more details!

Types of Firing Board Meet Your Requirements

Single Phase Firing Board

Suitable for single phase-specific applications such as AC motor controllers, industrial power supplies, field exciters for motors, and some bridge rectifiers.


Three Phase Firing Board

Commonly used in 3-phase applications such as power supplies for heavy industry, power generators, battery charging systems, etc. PCBMay is your expert manufacturer of the Three Phase Firing Board in China.

Six Phase Firing Board

Six Phase Firing Board keeps the line operating voltage at a constant value of 900. PCBMay six-phase firing board is ideal for particular rectifiers and motor controllers.

SCR Firing Board

Also known as Silicon Controlled Rectifier (SCR) firing board. You can find an extensive line of SCR Firing Board at PCBMay at a very affordable rate.

Bi-polar Firing Board

This PCBMay bipolar firing board is a 3-phase firing board w/ 6 silicon-controlled rectifiers. All bipolar firing board from PCBMay is 100% inspected and tested before the delivery to you.

High-Voltage Firing Board

High-Voltage Firing Board from PCBMay features a tolerance for high voltage values. It has a pulse transformer with high-output gates. PCBMay strive to provide the best quality High-Voltage Firing Board for your applications.

Why Choose PCBMay for Your Firing Board

PCBMay is a world-leader firing board provider. We produce premium quality types of firing boards for your electronic products. All are reliable, durable, and safe. Before shipping, we guarantee 100% inspection to the fullest to secure you receive a stable performance firing board.

PCBMay offers high-quality firing boards adhering to ISO production procedures. We are approved by ISO-9001 quality system certification, ISO-14001 environmental system certification, USA and Canada UL(E477880), and RoHs. Our management certification stands as proof that we are a dedicated supplier striving to support your firing board’s needs.

VPC Plating Line

Firing Board Related Boards

Auxiliary Firing Board
Auxiliary Firing Board
PCBMay will choose the right material based on your detailed Auxiliary Firing Board order. Just send your requirements immediately.
Variable Frequency Firing Board
Variable Frequency Firing Board
We will make strict quality control and testing on your variable frequency firing board needs. PCBMay guarantee 100% high-quality products.
Inverter Control Board
Inverter Control Board
Here at PCBMay, a wide variety of inverter control board options are available to you. Even for mass production, PCBMay is capable to provide your needs.
Inverter Power Board
Inverter Power Board
Specially designed Inverter Power Board is here at PCBMay. Get the best deal of Inverter Power Board here!
Fan Power Board
Fan Power Board
Fan Power Board from PCBMay is durable, powerful, and functional. All are UL, RoHS, ISO certified.
BIB Board
BIB Board
We will assemble your BIB Board from different quality parts, you will see the final BIB Board after this process.
IC Test Board
IC Test Board
PCBMay obtain the IC Test Board manufacturing capabilities and skilled technicians to build simple to complex bare boards.
Custom Firing Board
Custom Firing Board
PCBMay is capable of Custom Firing Board fabrication. Since 2008, we dedicate our knowledge and skills in this industry.

Firing Board Production Details As Following Up

Brown Oxide
PTH Line
VCP Plating   AOI  Exposure E-Test
Layer Count1-40layers
Base MaterialKBShengyiShengyiSF305FR408FR408HRIS410FR406GETEK370HRIT180ARogers4350BRogers4000PTFE Laminates(Rogers seriesTaconic seriesArlon seriesNelco series)Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
Board TypeBackplane、HDI、High multi-layer 、blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
Board Thickness0.2-5.0mm
Copper ThicknessMin. 1/2 OZ, Max. 10 OZ
PTH Wall25um(1mil)
Maximum Board Size1100*500mm(43”*19”)
Min laser drilling size4mil
Min. Spacing/Tracing2.7mil/2.7mil
Solder MaskGreen, Black, Blue, Red, White, Yellow,Purple matte/glossy
Surface TreatmentFlash gold(electroplated gold)ENIGHard goldFlash goldHASL Lead freeOSPENEPIGSoft goldImmersion silverImmersion TinENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finger.
Min. Annular Ring3mil
Aspect ratio10:1(HASL Lead freeHASL LeadENIGImmersion TinImmersion silverENEPIG);8:1(OSP)
Impedance control±5ohm(<50ohm), ±10%(≥50ohm)
Other TechniquesBlind/Buried Via
Gold Fingers
Press Fit
Via in Pad
Electrical Test

Here there’re many laminate material datasheets, they’re useful and helpful for you, please see them:

TU-872Modified EpoxyDOWNLOAD2003403.8-4.03.8
RO 3010Cer/PTFEDOWNLOAD50010.2
RO 4003Hydrocarbon/CerDOWNLOAD>2804253.38
RO 4350BHydrocarbon/CerDOWNLOAD>2803903.48
RT/duroid 5880PTFE/GlassDOWNLOAD5002.2
ISOLAPolyclad 370HRFR4DOWNLOAD1703404.8-5.1
HitachiMCL-BE- 67GModified EpoxyDOWNLOAD1403404.94.4
MCL-LX-67YSpecial LaminateDOWNLOAD185-195325-3453.4-3.6
NelcoN4000-13Modified EpoxyDOWNLOAD210-2403653.73.6
N4000-13EPModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13SIModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13EP SIModified EpoxyDOWNLOAD210-2403503.43.2
ArlonArlon 25NCerDOWNLOAD2603.38
Arlon 25FRCerDOWNLOAD2603.58
Arlon 33NPolymideDOWNLOAD>2503534
Arlon 35NPolymideDOWNLOAD>2503634.2
Arlon 85NPolymideDOWNLOAD2503874.2
StablcorST325DOWNLOADThermal conductivity:75w/m.k(with 1oz copper)
ST10DOWNLOADThermal conductivity:325w/m.k(with 1oz copper)
Bergquistht-04503DOWNLOADThermal conductivity:2.2w/m.k(with 1oz copper)


PCBMay offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBMay and offers very competitive rates to customers of PCBMay.
It normally takes 3-7 business days for the package to be delivered around the world.

DHL Forwarder

2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.

UPS Forwarder

3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.

TNT Forwarder

4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.

Fedex Forwarder

5. Air, Sea/Air, and Sea

If your order is of large volume with PCBMay, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

On our website you can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with credit card: Visa, Visa Electron, MasterCard, Maestro.

    Your Premier Firing Board Supplier

    PCBMay is a leading manufacturer of high-quality firing boards in China for over 12 years. We provide a firing board with a massive range of configurations and specifications that you require.

    As a trustworthy manufacturer, we always guarantee that our firing board can give you the best performance for your electronic product. In manufacturing firing boards, we follow ISO production procedure and adopt the IPC class 2 quality surveillance standards.

    You will find PCBMay firing boards employed in many devices and equipment such as battery charging systems, uninterrupted power supply systems, controllers for wind turbine plants, primary controllers for transformers, DC motor drives, half-wave converters, etc.

    All types of firing boards are here in PCBMay. It includes a single-phase firing board, a three-phase firing board, a six-phase firing board, a bi-polar firing board, etc. These firing boards deliver a dependable, secure, and cost-effective solution for current or voltage control, high-current gate pulse, and soft-start circuitry.

    PCBMay can assemble firing boards with optional auxiliary firing boards, regulator boards, and unique purpose boards. PCBMay fabricates various kinds of firing boards for your project.

    For more than 12 years, PCBMay dedicates itself to the firing board and other related products manufacturing and supplying. We became famous for delivering the finest quality products and reliable services to customers worldwide.

    Whether you are a supplier, electrical engineer, or integrator searching for a high-standard firing board, PCBMay is you’re your ultimate choice! You can find plenty of products here offer at a very cost-effective price. Aside from firing board fabrication, we also provide fan board production, compressor PCB, inverter control board, inverter power board, etc. PCBMay is your one-stop-shop solution for all PCBs in China.

    Firing Board

    Professional engineers and expert technicians with 15+ years of firing board manufacturing experience support us. That’s why we can assure the effectiveness and outstanding performance of our products. PCBMay also has an approachable and cooperative customer service team who will assist your inquiries and orders. Get a hassle-free transaction with PCBMay!

    For more details about firing boards, feel free to message us immediately.

    Firing Boards: The Ultimate FAQ Guide

    This guide will provide you some useful information about firing boards, so let’s start to drive it.

    What Are Firing Boards?

    A firing board is a device or circuit arrangement for controlling current and voltages in various electrical equipment. You can use a firing board to send electrical pulses to electronic devices.

    What Are The Types Of Firing Boards Available?

    Firing boards come in different types. Below are the popular firing board types:

    Single-phase Board

    These are the types of boards for single-phase applications. An example of a single-phase application is a controller for an AC motor. You can also use these boards for other applications like industrial power supplies and motor field exciters.

    single phase firing board

    Figure 2. single phase firing board

    Single-phase firing boards come in different forms depending on the arrangement of their silicon rectifiers. The first form of a single-phase firing board is when you combine two SCRs with four SCRs. The second variant is when you arrange four SCR single-phase motors with a unique board.

    Three-phase Firing Boards

    Thistle’s three-phase firing board is used as power supplies for heavy industry applications, motor controllers, battery charging systems, and power generators.

    3 phase firing-board

    Three-phase firing board

    Six phase Firing Boards

    The six-phase firing board is made up of twelve silicon rectifiers. They are ideal for motor controllers and rectifiers. Another powerful use case of the six-phase firing board is to enhance phase balance in various equipment.

    Another unique application of this board is to maintain at a constant value of 900, the operating voltage of electrical equipment.

    6 phase firing board

    Figure 4. Six phase firing board

    What Are The Applications Of Firing Boards?

    What in the world are firing boards? Well, we will use this section to look at some of their top applications.

    Before we look at that, it is important to note that firing boards primarily help you to control or regulate the phase angle of Silicon Controlled Rectifiers – SCRs in a dependable and cost-effective way. This is especially true in applications like converters that depend on DC and AC controllers.

    You can use firing boards in devices and equipment like:

    • DC motor drives
    • Primary controllers for transformers
    • Charging systems for batteries
    • Wind turbine plant controllers
    • Transformer primary controllers
    • Half-wave converters
    • Uninterrupted power supply systems.

    What Does Firing Angle Mean In Firing Board?

    Firing is a process where voltage is applied to the gate or switch of a silicon-controlled rectifier.

    The silicon-controlled rectifier is a device made of an anode, cathode, and gate. When voltage is applied across the anode and cathode of the silicon-controlled rectifier, the gate or switch acts as a regulation pin.

    There are two types of firing: zero voltage cross-over and phase angle control firing.

    Zero Voltage Cross Over:

    This type of firing is a technique used to turn on a silicon-controlled rectifier when the AC voltage load is zero. In other words, immediately the voltage crosses the zero mark or value, the silicon-controlled rectifier switches on.

    What is Firing Angle?

    As we’ve already looked at, the silicon-controlled resistor or thyristor of a firing board turns on upon zero voltage crossing. The angle at which this occurs is called the firing angle.

    Once you turn on the silicon-controlled resistor on the firing board, it moves or functions in cycles. These cycles can be measured in degrees. The degree value measured when the SCR is turned on is referred to as the firing angle.

    How Can You Control The Firing Angle In Firing Board?

    Yes, you can achieve firing angle control. This can be done when you alter the period that you apply the voltage to the SCR’s gate.

    One way you can achieve this is by employing a remote input control to adjust the period you apply voltage to the switch of the SCR. By doing this, you exercise control of when the firing board turns on.

    Firing angle control is super important in applications like regulating the speed of a fan motor speed. It can also be useful when you want to adjust the intensity of a light’s source.

    AC Motor Soft Start Three Phase Thyristor Firing Control Board

    AC Motor Soft Start Three Phase Thyristor Firing Control Board

    What Is Firing Circuit In Firing Board?

    The firing circuits of a firing board can be configured in three forms: R firing circuit, RC firing circuit, UJT firing circuit.

    The firing circuit has unique characteristics as follows:

    The thyristor and firing circuit should be electrically separated. At certain periods, the circuit needs to produce thyristor activating pulses.

    What Are The Quality Standards Of Firing Boards?

    Recognized industry bodies have set standards that guide the design and manufacturing of firing boards. This ensures only reliable, safe, and efficient boards are produced.

    Below are some quality standards firing board standards:


    IEC65 is a standard for ensuring the safety of firing board household devices.

    IEC 60947-4-2

    IEC 60947-4-2 is a standard that checks low voltage switch gears and regulators like AC regulated motors and starters

    IEC 61000-4

    IEC 61000-4 is a standard for firing boards that measures and tests its procedures for electromagnetic consistency.

    How Are Firing Boards Produced?

    Producing firing boards involves many processes. But the most important steps in the manufacturing processes are:


    Here, you create a blueprint of the firing board using design software. Before designing, you need to carefully consider all the requirements of the board. Also, determine the right materials for your board based on its application.

    By inputting the vital specifications of your board onto the design software, the software can help you generate a precise, and feasible virtual structure of the board.

    The design needs to be verified by expert engineers before you move on to the next stage of the production process.


    Once the design is complete and it is verified, you need to fabricate or print the various components of the firing board.


    At this stage, the various components of the firing board are assembled together in a precise manner using advanced equipment and technology. The assembling of board components should be done following ISO and industry quality standards.


    In this stage, you test the board with a testing machine to verify if it meets its performance requirement.

    Firing Board

    Firing Board

    What Factors Should You Consider When Buying Firing Boards?

    You need to consider many factors when buying a firing board for your equipment. Below are some of the important factors to consider before buying a firing board.

    Requirement of the firing board device

    You need to first, determine exactly what you want to use the firing board for. What is the application of the board? Once you determine this, you need to determine the requirements of the board. This will help you choose the right board for your equipment.

    The credibility of the manufacturer

    The next thing you need to check or consider is the credibility of the manufacturer who would supply the firing board. Always, purchase from a manufacturer with massive experience, expert engineers, and designers.

    The ideal firing board manufacturer should follow ISO production methods and use IPC class quality standards. Buying from a credible manufacturer means you will get a reliable and high-performing firing board.

    The materials for the firing board

    Finally, the board should be made of standard industry materials. Different firing board devices are built with different materials. These materials used are mostly determined by the requirement of your device.

    What Factors Determine The Cost Of Firing Boards?

    The cost of firing boards is influenced by several factors. Some of these factors include:


    Various firing boards have different designs. The design of a board is primarily determined by its application. Firing boards with simple designs and structures mostly cost low. On the other hand, boards with complex designs and big structures can be higher.


    Materials for making firing boards affect its final cost. Depending on the application of a firing board, specific materials would be used. In cases where high-quality materials are used for a board, the cost of the board may increase.

    Another factor is the number of materials used for the boards. Applications that require more materials for their boards may have a surge in their price.


    Finally, the type of manufacturer you choose mostly determines the cost of the firing board. Boards from big manufacturers are mostly high.

    Big manufacturers have huge experience, great expertise, and top equipment. They also use high-class standards for their boards. This makes the boards from these manufacturers higher than relatively small and new manufacturers.

    Can You Use LSI On Firing Boards?

    Yes, you can use LSI – Large Scale Integration for making firing boards. Why? This is because LSI makes it possible to use several transistors on a microchip.

    With this, you’re able to build high-performing equipment on a small platform.

    Why Are LSI Used On Firing Boards?

    Large-scale integration presents massive benefits to the firing boards. This unique technology allows you to pack thousands of transistors on a single chip.

    With this, you reduce cost significantly since you only need a small platform or material to build your fireboard. In other words, LSI makes firing boards cost-effective.

    Another huge benefit of LSI technology is its potency to skyrocket the performance of the fireboard due to increased transistors. Furthermore, it makes the board reliable while achieving maximum results.

     What Is A Bi-Polar Firing Board?

    This is a three-phase firing board having 6 SCR. Bipolar boards can be arranged to function as AC controllers. When used as an AC controller, bipolar boards can reverse series.

    Bipolar Firing-Board

    Bipolar Firing Board

    • A bipolar circuit makes it possible to change from one pole to another.
    • It has regulator boards for various current and voltages
    • It has 3 double sets of output switches or gates.
    • Control input for soft start and stop that can be arranged separately.
    • Analog command control input for delay angle.

    What Are The Applications Of the Bi-polar Firing Board?

    Bipolar fire boards help you to regulate SCR’s phase angle for direct current converters and AC regulators.

    Some common applications of bipolar boards include primary regulators for transformers, charging systems for batteries, half-wave converters, uninterrupted power supplies, and plating rectifiers.


    Thyristor Firing Board

    How Can You Prevent Firing Board Failures?

    Firing boards can fail due to many reasons. But the most common causes of board failure are poor design, manufacturing defects, and environment.

    Poor Design

    When a firing board is not well designed to meet its performance requirement, it makes it very liable to fail.

    The board should be well designed considering the requirements of the equipment it will be used for.

    The design should be well laid out and verified by expert engineers before the production of the board begins. During the design stage, the right materials based on the board’s requirements should be chosen.

    High-quality design software should be used for the design to ensure quality designs that guarantee the efficient functioning of the board. On top of this, your design should be feasible.

    Manufacturing Defect

    When proper manufacturing methods are not used, your board will end up failing. When there are poor joints on the board, the board will likely fail.

    All the joints on board should be well aligned. You need to ensure structural integrity when designing and building the board.

    To avoid degradation of board parts, high-quality parts that meet the device’s operation requirement should be used to avoid board failure. You need to strictly adhere to firing board quality standards when manufacturing.

    What Are Auxiliary Firing Boards?

    To increase the performance of a firing board, you can add or connect other boards to it. These additional boards are called auxiliary boards. For example, you can add five auxiliary boards to give you higher performance.

    With auxiliary boards, you can control voltages as high as 900 V. 

    Auxilairy firing Board

    Auxiliary Firing Board

    What Are Some Of The Unique Features Of The 3-Phase Firing Boards?

    The three-phase firing board comes with some unique features. In most cases, these attached features don’t depend on the 3 phase firing board.

    Below are some of the unique attached features of the 3 phase firing board:

    • It can regulate or accommodate high voltages
    • It has substantial distances that make it possible for creepage.
    • It has circuits that permit poles transition
    • Additional six output gates or switches.

    Can You Combine Firing Boards With Other Printed Boards?

    Yes, you can combine firing boards with other circuit boards. You can combine firing boards with auxiliary boards, regulator boards, and other specific boards.

    With this configuration, you’re able to gain tremendous control for your device.

    What Is a High Voltage Firing Board?

    High voltage firing boards are boards you can use to regulate equipment with high voltages. These boards mostly have pulse transformers with huge output switches or gates.

    Because of its improved creepage distance, there is better isolation to the AC Path’s voltage. This ultimately supplements the activation current of the gate.

    Is it Possible To Use High Voltage Firing Board As A Primary Transformer Controller?

    A transformer is a system that is used for transmitting electrical power. It is mostly used to increase or decrease a supplied voltage while maintaining the AC frequency between circuits.

    In other words, a transformer can receive a voltage at a specific value and step up or step down the voltage values.

    The following features of a high voltage firing board make it possible to be used as a primary controller for a transformer:

    • You can make it work at once without hindering phase loss.
    • It gives you more flexibility when it comes to regulating power points.
    • High voltage firing boards are unresponsive to an increase in frequency values and warped main voltages.

    Why Do You Use Silicon For SCR Firing Board?

    Silicon is used for the SCR fireboard because of its unique ability to reduce current leakage significantly. This property of silicon makes it a material of choice for many applications in the electronics industry.

    What Steps Should You Follow When Ordering Firing Board?

    To order your preferred firing boards from China, follow the processes below:

    Start with a search on Google or Bing by using a keyword like “firing board manufacturers in China”

    Go through the list of China firing board manufacturers that appears from the search results.

    Make a list of manufacturers from Google’s first-page search results. Repeat this for the second-page results.

    Go to the websites of your listed manufacturers and find out if they supply your preferred boards. After this, narrow down the list by selecting manufacturers with:

     Certification and quality standards

    The manufacturer should have recognized industry certifications. They should also follow firing board quality standards for their production.


    The manufacturer should have 10+ years of experience in firing board manufacturing. Also verify if the manufacturer has professional engineers, expert designers, and a top-quality team.

    Advanced equipment and best technology

    Shortlist firing board manufacturers that use modern technology and highly advanced equipment for manufacturing.

    After shortlisting, contact the manufacturers. You can contact the manufacturer by using their website’s contact form. Ask the manufacturer for a quote for the firing board you are interested in.

    You can add all the requirements of your desired firing board when contacting the manufacturer.

    Once you receive quotes from the manufacturers, analyze them and choose the one that meets your requirement. Make sure to choose a supplier that meets your budgeted capital.

    Finally, get in touch with the selected firing board manufacturer and make an order for your board. You can ask the manufacturer to guide you in the ordering process if you don’t understand the process.

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