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Led Chaser PCB

  • Over 10 years of experience
  • Wide range of led chaser PCB
  • High-quality led chaser PCB
  • Equipped with skillful engineers

How does LED Chaser PCB Works?

The LED Chaser PCB works in integration with the circuit board of the LED to raise up the transport of electric current in the LED circuits.

The LED Chaser Printed Circuit Board is fundamental attached to a soldered chip that helps to generate lightwhen the diodes are electrically linked.

These chips are attached to the circuit with the assit of a sink and a ceramic base.

How does LED Chaser PCB Works?
Working Principle of LED Chaser PCB

What is the Working Principle of LED Chaser PCB?

The proceed principle of the LED Chaser circuit board states that the LED will reiterated flicker if the PCB is flashed between the wires of the arranged circuit.

The reiterated flickering between the LED Chaser PCB triggers the output signals to alternate the complex from the high to low values.

The output of the LED Chaser PCB is then transferred to the input pin of the IC. Each LED present in the 20 LED Chaser circuit forms a wise connection between themselves pins.

What is the Layout of LED Chaser PCB?

The layout of the LED Chaser PCB is based on the locating of the 1407 -decade counter 555 timers.

There are many designs for the layout of the LED circuit board.

But the combine of the decade counters, ICs, and LEDs in the PCB determine layout and design.

when making the layout of the LED Chaser PCB, the manufacturer take attention on the specific sequence of the alternation between the straight pins and ICs.

Besides,the working efficiency of the LED Chaser circuit boards also decided by the LED PCB Layout.

Venture Led Chaser PCB

Venture is an expert Led chaser PCB manufacturer and supplier in China for more than 10 years.

Venture led chaser PCB is built on a perf board using the following aspects:

  • 10 LEDs
  • CD4017 decade counter
  • 555 timer (configured in astable mode and some additional components)

As a leading manufacturer, we can fabricate different kinds of Led chaser PCB for your projects, based on competitive prices.

Your Leading Led Chaser PCB Supplier in China

Venture led chaser or sequencer is one of the most famous types of LED-driving circuit. This led chaser PCB is mostly used in running-light or rope displays and advertising displays in small discos, etc.

The best known and most widely used LED-driving IC in chaser or sequencer applications is the 4017B CMOS IC.

Venture led chaser PCBs are widely used in different industries. You can use our Led chaser PCB for:

  • highway
  • square
  • garden
  • parking lot
  • work
  • gymnasium
  • shipyard
  • exhibition
  • warehouse

Venture Led chaser PCB has outstanding implementation and durability.

As a leading manufacturer, we have led chase PCB supplying design capacity as we fabricate hundreds of led chaser PCB every day with our automated production line.

Whether you are a led chaser PCB distributor, retailer, or custom led chaser PCB factory, Venture is your best partner.

We can always accommodate your requirements when it comes to led chaser PCB.

Additionally, we have a superior unit that comes with full customer support. We keep every client up to date with our latest product in this fast-moving PCB design industry.

For more info about our led chaser PCB, kindly contact our sales team today!

LED Chaser PCB: The Ultimate FAQ Guide


This guide covers everything you need to know about LED chaser PCB.

Whether you want to learn about the specifications, features, design or components – you will find all information right here.

So keep reading to learn more.

What Is An LED Chaser PCB?

LED chaser PCB

LED chaser PCB

The LED Chaser PCB is also known as the LED sequencer PCB.

This is a popular type of LED-driving circuitry in display advertising, rope displays, etc.

LED chaser PCB contains a clocked IC or another type of electronic system that makes the LEDs light up.

Also, the IC assists in turning on and off the LEDs in a repetitive manner giving an illusion that the lights are moving along a string.

This display effect is attractive and one or more light ripples seem to repeatedly run via a sequence.

How Can You Make An LED Chaser PCB With No IC?

Yes, this is possible.

The parts that you will need for this project include the following:

  • 3 parts of BC547 transistors
  • 6 parts of 3V LEDs
  • 3 parts of 560 Ohm resistors
  • 3 parts of 10K resistors
  • 3 parts of 25V 100uf capacitors
  • Connecting wires
  • 1 part of 9V battery
  • 1 part of battery clippers

Then follow the steps below:

Connect Emitter

First, you need to connect the emitter pins of the three transistors using solder.

Connect 100uf Capacitors

In this step, you will connect all the capacitors to the transistors.

For the first capacitor, solder the negative pin to the base pin of the first transistor.

Then connect the negative pin to the collector pin of the second transistor.

Solder the negative pin of the second capacitor to the base pin of the second transistor.

Then connect the positive pin to the collector pin of the third transistor.

Finally, solder the negative pin of the third capacitor to the base pin of the third transistor.

Connect The Third Capacitor

Here, you will solder the positive pin of the third capacitor to the collector pin of the first transistor.

Besides, you will use a wire as a solder in this phase.

Connect 560 Ohm Resistor

This step entails connecting the 560 Ohm resistor to the circuit.

Proceed by soldering the 560 Ohm resistor on all the collector pins of the transistors as a solder.

Connect 10K Resistor

This stage involves connecting the 10K resistor to the circuit.

Proceed by soldering the 10K resistors to the base pins of all three transistors as a solder.

Connect Wires And Resistors

In this step, you will connect the out wires of the 10K resistors to those of the 560 Ohm resistors.

Connect LEDs

Here, you will connect the negative legs of the LEDs.

Connect First Wire

In this step, you will connect a wire to the negative leg of LED number one to the positive leg of LED number four.

Connect Second Wire

Here, you will solder the second wire to the positive leg of LED number 2 then to the positive leg of LED number five.

Connect Third Wire

Next, solder the third wire to the positive leg of LED number three and the positive leg of LED number six.

Connect The Wire To LEDs

Here, you will solder another wire to the negative leg of the LEDs.

Connect LED Wires To Circuit

Start by soldering the negative wire of the LEDs to the common emitter pins transistors.

Then, solder the wire of LED number 1 to the collector pin of transistor number 1.

Next, solder the wire of LED number 2 to the collector pin of transistor number 2.

Finally, solder the wire of LED number 3 to the collector pin of transistor number 3.

Connect Battery Clipper

Here, you will solder the positive wire of the battery clipper to the out wires of the 10K resistor, and 560 Ohm resistors.

Then, solder the negative wire of the battery clipper to the transistors’ common emitter pin.

Connect Battery

Now that the circuit is complete, you will connect the battery to the battery clipper.

Also, you will notice that the LEDs are turning on and off in a sequence.

What Are The Applications Of An LED Chaser PCB?

There are various applications of the LED chaser PCB.

Some of them include the following:

  • Marquee signs
  • TV game show sets
  • Display advertising
  • Automotive indicators
  • Rope displays in discos
  • LED warning lights
  • Airport runways
  • Holiday lights

What Quality Standards Should An LED Chaser PCB Comply With?

LED chaser PCBs need to comply with a set of standards set by international, national, and regional organizations.

The compliance ensures that the LED chaser PCBs are safe for use and are effective.

Some of the quality standards LED chaser PCBs needs to comply with include the following:

CE Mark Of Quality

This standard affirms that the manufacturers conform with European health, environmental protection, and safety standards.

Also, it majorly applies to LED chaser PCBs that you will sell in European Economic Area [EEA] regardless of the origin.

Restriction Of Hazardous Substances [RoHS]

This standard regulates the application of toxic materials in electronic and electrical systems and devices.

Currently, RoHS restricts the use of 10 substances when manufacturing these devices.

ISO [International Organization for Standardization] Certification

This standard will ensure LED chaser PCB manufacturers have the requirements for quality assurance and standardization.

ISO certification will certify the following processes:

  1. Manufacturing process
  2. Management systems
  3. Service procedure
  4. Documentation procedure

UL Certification

UL stands for Underwriters’ Laboratories.

This standard means UL has tested the LED chaser PCBs to safety and sustainability standards that are nationally recognized.


This is a technical standard that entails the development of quality management systems which:

  1. Offers continuous improvements
  2. Emphasizes defect prevention
  3. Reduction of waste

How Do You Test LED Chaser PCB?

For an LED chaser PCB to function properly, the design should have no flaws.

Although a large portion of the manufacturing process is automatic, you still need to test the LED chaser PCB at all stages.

When an LED chaser PCB fails, it can incur losses and result in recalling the products.

Testing is thus vital to prevent such situations from occurring.

Using appropriate testing techniques can assist you to fix small problems in a timely fashion.

Also, you can verify design specifications and change them when the need arises.

Besides, you can check the noise and vibration tolerances, and increase them where applicable.

Here are some methods you can use to test LED chaser PCBs:

Testing PCB

Testing PCB

Visual Testing

This testing technique is simple and cost-effective and entails using experts to conduct the visual test.

Besides, it involves checking the outer physical state of the LED chaser PCB such as:

  1. Bad mask application
  2. Scratches
  3. Soldering joints
  4. Joint issues, etc.

Automated Optical Inspection [AOI]

Since humans conduct visual testing, they may miss some flaws.

Automated Optical Inspection will overcome these drawbacks since it is an automatic process.

AOI has an inbuilt design estimate on which it will compare the design on the LED chaser PCB.

The system will capture the circuit image then compare it with the inbuilt design to check for any flaws.

X-ray Inspection

When you have complex LED chaser PCB designs, many components are densely mounted on the PCB.

Automated Optical Inspection cannot identify flaws such flaws in small printed circuit boards and surface-mounted parts.

X-ray inspection is vital when you need to check the solder joints that are within the densely populated parts.

LED chaser PCBs with heavy metals like lead will absorb some of the X-ray.

This means you can view the internal components of the connection and solder joints.

In-circuit Testing

Here, you will check the position of the components and how they fit on the LED chaser PCB.

Also, you will use an electrical probe to test the LED chaser PCB for:

  1. Open ends
  2. Shorts
  3. Resistance
  4. Capacitance, etc.

In-circuit testing usually happens once you thoroughly inspect the design and assembly of the LED chaser PCB.

Functional Testing

This testing procedure entails verifying if the LED chaser PCB is operating.

For instance, you will check if it powers on, meets the specific parameters as per the design, etc.

Also, you can conduct other functional tests on the clients’ end to ensure it works well with their system.

Besides, you can verify if the LED chaser PCB meets standards such as MSHA, UL, etc.

What Are The Different Types Of LED Chaser PCBs?

LED chaser PCBs come in various classes depending on the design requirements, manufacturing process, and application.

Consumer needs and requirements make way for the development and manufacture of various types of LED chaser PCBs.

Here are some types of LED chaser PCBs:

Single-Sided LED Chaser PCB

Single sided PCB

Single sided PCB

This is a common type of PCB as it contains one layer of conductive copper on top of the substrate.

Single-sided LED chaser PCB entails placing electrical parts on side of the board.

Also, you can see the whole etched circuit from the other side.

The conductive paths in this PCB cannot intersect or overlap since it contains one conductive layer.

This effect makes it take much space hence good for low-density design specifications.

Besides, you will use single-sided LED chaser PCBs in low-cost and basic electrical and electronics.

Double-Sided LED Chaser PCB

Double sided PCB

Double sided PCB

Here, you will use conductive material on both sides of the LED chaser PCB.

Holes within the printed circuit board enable you to interconnect metallic components from both sides.

Also, you can use two mounting methods to connect the circuit on both sides of the double-sided LED chaser PCB:

  1. Surface Mount TechnologyHere, you will precisely place electrical parts on the surface of the printed circuit board.
  1. Through-Hole TechnologyHere, you will install lead parts in holes on the printed circuit board.After that, you will solder the lead parts to pads on both sides.

Multilayer LED Chaser PCB

Multi layer PCB

Multi layer PCB

This type of PCB has three or more conductive layers which come in a sandwich design.

It contains many double-sided conductive layers that you will divide by insulating layers.

Besides, you need to bind and laminate these layers under high temperature and pressure levels.

This effect ensures that there is no air between the layers and the LED chaser PCB operates effectively.

Rigid LED Chaser PCB

This type of LED chaser PCB cannot bend or twist as the base material for the PCB is a rigid substrate.

The rigid substrate makes the board have more strength and rigidity.

Also, you will use heat and adhesive to bind its several layers such as:

  1. Copper layer
  2. Substrate layer
  3. Silkscreen layer
  4. Solder mask layer

Rigid LED PCBs can come in the form of single-sided, double-sided, or multi-layered, depending on the application requirement.

Fully assembled LED Chaser PCB

Fully assembled LED Chaser PCB

However, once you manufacture rigid LED chaser PCBs, you cannot change or modify them.

Flex LED Chaser PCB

This type of PCB is flexible meaning you can twist or bend it without breaking or deforming it.

The common material for the construction of flexible LED chaser PCB is:

  1. Polyamide
  2. Polyether ether ketone [PEEK]
  3. Polyester film

Flex PCBs use the same parts that make rigid LED chaser PCBs.

The only difference is that flex LED chaser PCBs will flex in any form in its application.

Flex LED chaser PCBs can come as single-sided, double-sided, or multi-layered PCBs.

Flexible LED PCB

Flexible LED PCB

Rigid-Flex LED Chaser PCB

Rigid flex PCB

Rigid flex PCB

This type of PCB is a hybrid between flexible and rigid LED chaser PCBs meaning you can fold or flex it continuously.

During the manufacturing process, rigid-flex PCBs take a curved or flexed shape.

The flexible part assists in interconnecting rigid boards enabling you to achieve a narrow conductor line.

This feature enables it to occupy less space hence, resulting in small printed circuit boards.

Using flexible PCBs to interconnect parts eliminates usage of connectors that are heavy, thus these PCBs are lighter.

Construction happens in 3D since it allows you to twist or fold the PCB in the appropriate shape.

What Are The Price Determinants Of LED Chaser PCBs?

These include the following:

Assembly Type

Depending on how you assemble the LED chaser PCB, the price may increase or decrease.

For example, surface-mounted LED chaser PCBs are affordable than through-hole LED chaser PCBs.

Placement Of Components

How you place parts of an LED chaser PCB will determine the price, as surface-mounted methods are a cheaper option.


Do you need to use special parts to make the LED chaser PCB?

If the answer is yes, prepare yourself to spend more on these extra and unique features.

Number Of Parts

LED chaser PCBs can come with several parts, which will affect the overall process.

Besides, you will purchase these parts separately from the manufacturing process.

Component Package Size

Using standard industry size parts means you will spend less hence lower your cost.

On the contrary, when you use delicate and sophisticated parts, you will need to spend more.

Quantity Purchased

Purchasing LED chaser PCBs in large amounts will cost less than when you purchase them in small amounts.

Some manufacturers will often offer huge discounts when you purchase in bulk.

What Are The Electrical Properties Of LED Chaser PCBs?

These properties include the following:

Electrical Strength

This defines the capability of LED chaser PCBs to overcome electrical breakdown in the Z direction.

Volume Resistivity [ρ]

This is the capacity of dielectric materials to resist electricity or insulation.

Dissipation Factor Or Dielectric Loss Tangent ]Tan δ or Df]

LED chaser PCB materials will lose minimal power when the loss tangent is minimal.

The dissipation factor of LED chaser PCB materials is between 0.02 and 0.001.

Surface Resistivity [ρS]

This describes the dielectric materials’ resistance against electricity and insulation.

Relative Permittivity Or Dielectric Constant [Dk/Er]

The electrical performance of dielectric materials depends on signal integrity and impedance.

LED chaser PCB materials have a dielectric constant or relative permittivity between 3.5 and 5.5.

What Materials Will You Use To Make An LED Chaser PCB?

The various materials that make up an LED chaser PCB include the following:

Metal Core

This material is important for many usages and vital in transferring heat within the LED chaser PCB.

The base of the LED chaser PCB may have metal cores like copper or aluminum.

Metal cores will improve the insulation and thermal conductivity of LED chaser PCBs.


This is a cheap and durable alternative substrate to make LED chaser PCBs.

Besides, since LED chaser PCBs are thermally sensitive, it may cause the epoxies to easily lose their lamination.

In addition to these, you will choose a range of materials such as:

  • Isola PCB
  • Taconic PCB
  • Arlon PCB
  • Nelco PCB
  • Rogers PCB

What Are The Different Layers In LED Chaser PCBs?

These include:

Mechanical Layer

This layer will show information about LED chaser PCB assembly techniques.

You only need one mechanical layer for fabrication, but you can go for many mechanical layers.

Silkscreen Layer

This layer contains top and bottom overlays and is important for holding information about the LED chaser PCB.

Also, it is vital in laboratories during debugging.

Solder Mask Layer

This is a visible layer that covers the top and bottom components while inhibiting traces against shorting when the debris is on the board.

Keep Out Layer

This layer shows you the limit of the working area of the LED chaser PCB.

Routing Layer

This layer is within the internal and external parts of the LED chaser PCB and assists in the interconnection of electrical components.

Solder Paste Layer

This layer enables you to bond the components on the LED chaser PCB design.

Split Planes

This layer enables the passage of more than one voltage within one layer.

Ground And Power Planes

This layer improves LED chaser PCB performance and facilitates the distribution of power and ground on various components.

How Do SMD LED Chaser PCBs And COB LED Chaser PCBs Compare?

Here is a comparison between these two:




Surface Mounted Devices [SMD] are a new level of LED lights.

Most LED chaser PCBs have SMD chips making them brighter than older LEDs.

Here, you will solder the SMD LED chaser directly on the printed circuit board.

Also, the SMD LED chaser enhances thermal connections and uses less space on the printed circuit board.




Recent developments in the use of LED chips having many diodes is the Chip on Board [COB] technology.

Light rays on COB LED chaser PCBs are dense as COB technology uses no casing and will emit a consistent light beam.

COB LED chaser PCBs provide more lumen per watt ratio than other LED technologies.

What Kind Of Information Can You Find On Silkscreens Of LED Chaser PCBs?

The information includes:

  • Warning symbols
  • Company logo
  • Date codes
  • Manufacture marks
  • Test points
  • Part number and orientation
  • Processing types
  • Version number

Do You Need Heatsinks In LED Chaser PCBs?

LED chaser PCBs produce heat during operation hence, heatsinks assist in dissipating the heat effectively.

Therefore, heatsinks will protect the PCB and ensure it performs well and remains durable.

Can LED Chaser PCBs Come In Different Colors?

Yes, you can find LED chaser PCBs in the following colors:

  • Red
  • White
  • Blue
  • Green
  • Red
  • Yellow

What Are The Thermal Properties Of LED Chaser PCBs?

These properties include the following:

Coefficient Of Thermal Expansion CTE [ppm]

The rate at which LED chaser PCBs expand due to heat is known as the coefficient of thermal expansion.

Ensure CTE is as low as possible.

Thermal Conductivity k [W/m]

The rate at which heat transverses a material is known as thermal conductivity.

Thermal conductivity is low for insulators than conductors.

Decomposition Temperature Td [°C]

The temperature at which LED chaser PCB substrates will decompose permanently is known as decomposition temperature.

Solder mask temperature should be higher than decomposition temperature.

Glass Transition Temperature Tg [°C]

This is the temperature that causes LED chaser PCB substrates to change from hard to soft.

Besides, the glass transition temperature needs to be lower than the solder temperature.

What Are The Components Of An LED Chaser PCB?

An LED chaser PCB has the following parts:

LED Chaser PCB

LED Chaser PCB


This part will increase the charge in LED chaser PCBs.

Light-emitting Diode [LED]

This is a semiconductor that allows electric current to pass through it to produce light.


This part regulates and controls the flow of electric current and comes in various color codes for value identification.


This part will store charge.


This part stores and supplies electrical charge or voltage to the PCB.


This part blocks other passages and allows electrical current to pass in one direction.


This part allows you to power on or off the LED chaser PCB as it allows or blocks the flow of current.

What Is The Price Of LED Chaser PCBs?

The price may be anywhere from 5 US Dollars.

Do LED Chaser PCBs Have Different Layers?

LED chaser PCBs may come in one or several layers such as:

  • 1 or 2 layers
  • 4 layers
  • 6 layers
  • 8 layers
  • 10 layers
  • 12 layers

Do LED Chaser PCBs Employ Silkscreen Printing Methods?

Yes, such silkscreen printing methods include the following:

Direct Legend Printing

This is an expensive method that uses inkjet projectors and acrylic paint.

CAD programs will place ink on the PCB then you will expose it to UV rays.

Manual Screen Printing

This method is suitable when the registration tolerance is 0.005”, or the line width surpasses 0.007”.

Besides, you need stencils to conduct this method.

Liquid Photo Imaging

This method is suitable when screen-printing lines surpass 4 mils

It entails exposing the laminate to UV rays after you cover it with epoxy.

Afterward, you will cure and develop the LED chaser PCB.

How Do You Design LED Chaser PCBs Effectively?

The following steps will guide you on how to design LED chaser PCBs effectively:

  • Start by using good PCB software solutions
  • Proceed by fabricating the close parts
  • Use a width calculator to find a suitable thickness and width of the traces
  • Select either thru-hole or surface mount technology
  • Make sure the design is accurate and the components fit
  • Incorporate capacitors close to power and ground pins
  • Enhance layout of switching regulators
  • Stay clear from blind vias and buried vias

What are the IPC Assembly Standards used to Manufacture LED Chaser PCB?

These include:

IPC 7711/7721C

This is the Rework, Modification, and Repair of Electronic Assemblies.

The information here aids in repairing and reworking the PCBs to IPC standards.


This is the Acceptability Standard for Manufacture, Inspection, and Testing of Electronic Enclosures.

The CM will use this standard during the assembly and inspection of the box builds.


This is the Acceptability of Printed Boards and involves inspection of the blank PCB from the fabricators.


This is the Requirements and Acceptance for Cables and Wire Harness Assemblies.

The CM uses this standard to manufacture cables as per your specific LED chaser PCB assemblies.

How Can You Prevent Overheating Of LED Chaser PCBs?

To prevent overheating, use the following techniques:

Integrate Heat Pipes

This method is cost-effective to conduct passive heat transfer in compact devices.

The pipes can contain fluids in small quantities such as water, nitrogen, acetone, or ammonia.

Active Cooling System

Here, you can use small fans to cool the device.

Thermal Interface Materials

This method entails filling empty spaces within surfaces and will offer superior thermal conductivity than air.

Heavy Copper

This method entails placing traced deep within the PCBs to make heat disperse in the PCB and within thermal vias.

What Is An LED Chaser Circuit?

This is a unit that will light the LED lights one by one for a short period, repeatedly.

The repetitions give it the appearance of running light.

What Is IC 555 Timer?

This is a stable device that generated accurate oscillations or time delays.

Also, it can have extra terminals for triggering and resetting.

A single external capacitor or resistor will accurately control time delay operation mode.

Two external resistors and one capacitor will control duty cycles and free-running frequencies in astable operations.

What Are Some Features And Applications Of IC 555 In LED Chaser PCB?

The features include:

  • Adjustable duty cycle
  • Timing ranging from microseconds to hours
  • Output and supply compatible TTL
  • The output can sink 2 mA, or source
  • Can operate in monostable and astable modes
  • The temperature stability is better than 005% per °C
  • 8-pin MSOP package is available
  • Normal on and off output
  • They are a direct replacement for SE555 or NE555

The applications include:

  • Linear ramp generator
  • Precision timing
  • Time delay generation
  • Pulse generation
  • Pulse position modulation
  • Sequential timing
  • Pulse width modulation

At Venture Electronics, we design and fabricate a range of LED chaser PCBs.

We also support OEM LED chaser PCB business.

Contact us now for all your LED chaser PCBs.

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