Bergquist PCB

  • Unique design
  • Excellent flame retardant
  • Fast delivery
  • Competitive price

What are the Uses of Bergquist PCB?

Bergquist thermal clad PCBs are used for the following area:
• Bergquist PCB acts as a perfect heat sink in the circuit

• Bergquist PCBs are used to provide substantial EMI shielding effects for circuits

• Bergquist PCBs are also used as solder floats in many circuits

• Bergquist PCB is also used in mobile phones and in many appliances, is used as the best quality modifier

• Sparker is another use for Bergquist printed board circuits

• Power LED system is also equipped with the highest quality Bergquist PCB

• Also plays a leading role in improving the efficiency of the acoustic shielding system


What are the Materials Present in Bergquist PCB?

Copper and aluminum are the main materials for constructing Bergquist PCBs.
Bergquist PCB is due to the highest quality aluminium and copper, the base layer is also composed of these materials. In addition, some manufacturers use other composite materials and metals to make Bergquist printed circuit board circuits reliable products.

Here are some other materials used to make Bergquist PCBs:
• Stainless steel • Silicon • Alumina

All materials used in the circuit construction of Bergquist printed circuit boards give them a prominent flame, flame resistance and highest dimensional stability compared to other heavy copper PCBs.

Why is Bergquist PCB well known?

Some of the potential reasons for Bergquist PC’s claim to fame are as follows:
They provide optimal shielding for electromagnetics in different circuits

• They have different dielectric constants
• They are more durable than other printed circuit board circuits
• They are called high frequency printed circuit boards
• They are known for stabilizing the operating temperature of printed board circuits
• They are highly temperature sensitive
• They are readily available from different manufacturers in China
• Users prefer to use it because of its widespread use in sensitive devices


Venture Bergquist PCB

Venture Electronics is a professional manufacturer and supplier of a wide range of printed circuit boards made from different materials such as Berquist.

Our Berquist PCB is an aluminum base copper-clad laminate which has high mechanical strength, excellent flame-retardant, dimensional stability, and more.

We offer Venture Berquist PCB at a competitive price!

Your Leading Bergquist PCB Supplier in China

Venture Bergquist PCB designer has more than 10 years of experience in manufacturing high-quality Bergquist PCB.

Our Berquist PCB design engineer had focused on important aspects of Berquist PCB to maintain:

  • excellent flame retardant
  • high mechanical strength
  • dimensional stability
  • good heat sink
  • excellent electromagnetic shielding and solder float

As a reliable one-stop supplier of Bergquist PCB, Venture can provide Bergquist MP-06503, LTI-04503, HT-07006, ML-11006, and HPL-03015 material.

Venture Bergquist PCB is widely used for sparker and modifiers on fire for mobile and motorcycle, soundbox, power LED, acoustic shielding system and power supply module, etc.

Venture Electronics is a Bergquist PCB manufacturer and supplier in China with a long-standing tradition of excellence and quality.

Our professional design teams had focused on all kinds of printed circuit boards at a low cost and with quick turn lead time.

Also, Ventures provide a one-stop Bergquist PCB assembly from component source to Bergquist PCB assembly. This allows our clients to get-to-market faster, more efficiently, and affordably.

Whether you need quick Bergquist PCB prototypes, a cost-effective solution for rigid-flex, flex, mixed dielectric, or metal-clad PCBs, our rich experiences, advanced technology, and expert team will help to meet these challenges.

We compete in time and must go beyond our current boundaries to provide competitive Bergquist PCB’s and services outside what is considered normal service.

Partner with Venture Electronics today and accelerate your innovative development projects now!

Bergquist PCB: The Ultimate FAQs Guide


Before buying Bergquist PCB, you should read this guide.

It has all information you’re looking for about Bergquist printed circuit boards – keep reading to learn more.

What is Bergquist PCB?

This is a type of PCB that incorporates Aluminum base copper-clad laminate with high mechanical strength, exceptional flame retardant and high dimensional stability.

Furthermore, Bergquist PCB feature very good solder float, electromagnetic shielding and heat sink.

Bergquist PCB

Bergquist PCB

What are the Advantages of Bergquist PCB?

Some more of the benefits of Bergquist PCB include:

  • Enhanced Product Durability
  • Improved Power Density
  • Enhanced thermal and mechanical efficiency
  • Minimized number of interconnects
  • Reduced junction temperatures
  • Decreased size of PCB
  • Minimizes Labor needed for Bergquist PCB Assembly
  • Wide form factors variety
  • Reduced thermal impedance
  • Lower operating temperature
  • Prolong the dies life
  • Facilitate better application of surface mount technology

What are the Applications of Bergquist PCB?

Bergquistprinted circuit board is commonly used in the following devices and systems:

  • Sparker and modifier of motorcycle
  • Power LED
  • Power supply module
  • Sound box
  • Acoustic shielding systems

Why is Functional Test of Bergquist PCB important?

Functional test is a final fabrication step that gives a pass or fail verdict on finished PCB prior to shipping.

The purpose of functional testing in Bergquist PCB is to confirm that its hardware has no defects.

These flaws could affect the performance of the PCB within a system application.

In summary, functional test validates the functionality and behavior of a printed circuit board.

The testing mimics the final electrical condition in which you will utilize the PCB.

However, the procedures, development and requirements of functional test differ from one PCB to another.

PCB functional testers usually connect to the PCB through a test-probe point or its edge connector.

“Hot mock-up, the common type of functional test, simply validates that the Bergquist PCB is functioning correctly.

More complex tests entail passing the PCB across a thorough variety of operational tests.

Some of the benefits of conducting functional test on Bergquist PCB include:

  • It does away with the necessity for costly system tests in certain instances, saving a lot of financial resources and time.
  • By checking from 50 to 100 percent functionality of a PCB, it reduces the effort and time to check and debug the board.
  • You can get the most productivity from functional test, making it the most effective technique other than system test.
  • It improves other types of PCB tests like flying probe and ICT tests, making your boards more robust and defect-free.

What is the typical Anatomy of Bergquist PCB?

Bergquist PCB is commonly a three layer board consisting of the following:

Bergquist printed circuit board

Bergquist printed circuit board

· Circuit Layer

This makes the printed circuit foil that typically have a thickness of 35-350µm in ordinary Bergquist PCB.

· Dielectric Layer

The dielectric layer gives electrical isolation while ensuring minimal thermal resistance.

Most dielectric materials are glass-free since glass carriers reduce thermal performance.

It is the most important element of Bergquist PCB, and bonds the circuit metal and base metal together.

· Base Layer

This layer is usually made of aluminum, though other metals like copper can also be utilized.

The most popularly used thickness of base material is 1.57mm in aluminum, but there are many other thicknesses available.

In some applications of Bergquist PCB, the base layer may not be necessary.

Different layers of PCB

Different layers of PCB

Which are the Standardized Methods for Determining Thermal Conductivity of Bergquist PCB?

There are a number of different test techniques for determining the thermal conductivity value of a Bergquist PCB material.

Results can vary based on the chosen technique, therefore it is crucial to apply same test techniques in material comparisons.

The standard test methods for determining thermal conductivity of PCB include:

· ASTM D5470

This is a steady state technique and is known as the guarded hot plate.

The method offers an analytically derived figure and does not apply approximations.

· ASTM E1461

Known as Laser Flash Diffusivity, ASTM E1461 is a transient technique where thermal diffusivity is the output of the test. Thermal conductivity is computed.

What is HPL Berguist PCB?

HPL refers to a Bergquist PCB material specifically constructed for high power lighting LED uses having challenging thermal performance requirements.

It is a thin dielectric material (38µm) with capacity to endure high temperatures.

HPL has a glass transition temperature of 185 degrees Celsius and 0.3 degree Celsius per Watt.

This type of Bergquist PCB reduces thermal impedance and transfer heat more efficiently compared to standard PCB.

The low thermal impedance offers an economical option eliminating extra LEDs for uncomplicated designs and a generally less complex manufacturing process.

Its use leads to lower operating temperatures significantly prolonging the lifespan of LED, ensuring better durability of high power lighting applications.

How does Thermal Impedance and Watt Density relate in Bergquist PCB?

The only measurement essential in establishing the watt density ability of your application is the thermal impedance of Bergquist PCB.

This is because it determines the temperature drop throughout the stack-up for every watt of heat flow.

Reduced thermal impedance leads to reduced junction temperatures.

Lower thermal impedance ensure efficient transfer of heat across the components of PCB.

Which are the Key Performance Considerations for Bergquist PCB?

The primary performance consideration for Bergquist PCB include the following parameters:

Bergquist PCB

Bergquist PCB

  • Peel Strength
  • Storage Modulus
  • Coefficient of Thermal Expansion
  • Dielectric Stability

What is the Importance of Choosing a Dielectric material with Glass Transition Temperature (Tg) above the Operating Temperature of Bergquist PCB?

Operating above the glass transition temperature of the PCB material leads to change in electrical and mechanical properties.

Mechanical changes of significance are a reduction of the copper foil peel strength, reducing storage modulus, and rise in the CTE.

Using a dielectric having Tg higher than the operating temperature has the advantage of relieving excess stress.

It relieves stress because of CTE mismatches in solder joints, on dielectric interfaces, and other interconnects.

The Bergquist PCB dielectric allows some of the strains to relax since the higher Tg puts it in elastomeric state (lower storage modulus).

You must also consider electrical properties changes in applications above Tg, though they are often only critical at frequencies beyond 1MHz.

The impacts to factor in are breakdown strength, modifications in the permittivity and dielectric loss of the material.

Most Bergquist PCBs have grading up to 45 percent above their glass transition temperature and are utilized widely in applications exceeding rated Tg.

Which is the best between Bergquist PCB vs. FR-4 PCB Double Layer PCB?

Bergquist dielectric is the best for double layer PCB.

Dual-layer printed circuit board constructions can offer shielding protection and extra electrical interlinks for higher density of component.

Double layer BergquistPCB will give superior thermal performance compared to conventional FR-4 constructions.

Furthermore, thermal vias may optimize thermal abilities for PCB applications using power components.

However, if you cannot use vias, choosing higher performance dielectric materials can take care of thermal problems independently.

Is Direct Die Method of Mounting possible with Berguist PCB?

Wirebonding and direct die attachment are increasingly common techniques of mounting components to Bergquist PCB substrates.

The main advantage of this method is lower thermal resistance in comparison to ordinary mounting methods where components are attached to IMS substrate.

When applying Chip-On-Board technology to design circuits, it is essential to employ the right surface finish.

This is crucial in ensuring that you attain excellent wire bond and die mounting connections.

The attachment of die is accomplished utilizing Lead-free solders, SnPb, in solder/eutectic gold, or a thermal/electrical conductive adhesive.

Also, the choice depends on the requirements of application to attach the die to the board.

The wire bonding done to make circuitry connections is often either aluminum or gold.

ENIG is recommended for aluminum wire bonding, while ENEPIG for gold wire.

High temperature dielectric materials have UL solder rating of 325 degree per 60 seconds, facilitating Tin/Eutectic Gold solders.

Which are the different Ways of Connecting Top Layers to Baseplate of Bergquist PCB?

Here are the popular methods of interlinking the top layer and baseplate of Bergquist PCB:

Electrical Vias connection to Baseplate

A copper IMS baseplate may serve as an active circuitry by utilizing blind plated electrical vias.

It is these vias that link the base metal and the top circuit layer.

Selective Dielectric Removal

Bergquisthas created a process of exposing the baseplate through selective removal of the dielectric material.

You can then surface finish the exposed surface just like any other circuitry pads.

The method is not restricted to the size or geometry of the area of dielectric removal.

Features of selective removal can be placed precisely in relation to the circuits.


You can form a pedestal utilizing a copper base and through selective removal of the dielectric material.

This moves the base metal upwards making it co-planar with neighboring circuits.

Which are the Common Materials Used in the Base Layer of Bergquist PCB?

Copper and Aluminum are the most common base layers utilized in Bergquist PCB.

Nevertheless, you can use other composites and metals, especially in applications in which mismatch of coefficient of thermal expansion is a concern.

They consist of Stainless Steel, Silicon and Alumina.

How is Solder Joint affected by Thermal Expansion of Bergquist PCB?

The main worry with thermal expansion of Bergquist PCB material is the strain the solder joint undergo during thermal cycling.

This is because the joints are not mechanically steady.

Therefore, stress instigated by heating and cooling might result in solder joint fatigue as it releases stress.

Extreme temperature differential, large devices, lead-free thickness of minimum solder, or poorly matched materials may all exert escalated stress on solder joints.

You can minimize joint fatigue by choosing the right base layer of Bergquist PCB to match thermal expansion of components.

Can you use UV Lasers in Bergquist PCB?

In fabrication of lower volume Bergquist PCBs, UV lasers are appropriate.

Nevertheless, they are slower at drilling holes in comparison to CO2 lasers.

Yet, UV lasers can cut both glass, resin, and copper through ablation.

The cut depth is very controllable by regulating the beam point of focus.

This technique is only ideal for holes not exceeding diameter and depth of about 200 microns, hence appropriate for microvias.

Different types of vias

Different types of vias

How do you Change the Resistance of Copper Traces in Bergquist PCB?

Copper traces have varying degree of resistance based on the result when you divide resistivity times length result by thickness times width result.

The best technique of modifying this is by adjusting the size of the trace, since other parameters are not controllable.

You perform this by altering the width, length and thickness of the copper trace.

Why is Bill of Materials During Fabrication of Bergquist PCB?

It is important to generate the Bill of Materials early in the manufacturing process.

You should select the components of the PCB depending on an evaluation of tolerance, operating voltages and electrically satisfactory elements.

Less technical components also must be factored in, such as size, availability and budget.

Make sure you understand how your producer treats components when developing your BOM.

Remember that difficult to source components can be time consuming or expensive and can might as well delay assembly.

Designate parts in the BOM by publishing the name of the manufacturer and part number.

Which is the Best Base Layer Material to use if you need Electrical Link to the Base Plate of Bergquist PCB?

When you require a link to the base plate, copper is the highly feasible base layer material to utilize.

If using thermal or electrical vias, it is essential to harmonize the base and circuit coefficients of thermal expansion (CTE) as closely as practical.

If not, excessive plated-hole strain will take place during thermal cycles.

Likewise, you may use different base layer materials for connection, however, you will need different connection designs.

What are the Factors to Consider When Selecting the Circuit Layer of Bergquist PCB?

The circuit layer is defined as the component-mounting surface in the PCB.

Here are the main considerations when choosing the circuit layer of Bergquist PCB:

·         Current Carrying Capability

Current carrying ability is an important since this layer often acts as a printed circuit, interlinking the modules of the assembly.

The benefit of Berguist PCB is that the circuitry trace interlinking components has the capacity to carry high currents.

This is due to its capability to dissipate heat because of 12R loss within the copper circuit.

· Heat Spreading Capability

Both foil thickness and dielectric thickness affect heat spreading ability in printed circuit board.

Heat spreading is among the most superior benefits obtained from IMS PCBs.

By increasing the thickness of copper conductor, you increase heat spreading and decreases junction temperature.

In some scenarios, very thick copper together with bare die can be employed to remove the need for an ordinary packaged component.

What is the Importance of Proof Test in Bergquist PCB?

The role of Proof Testing Bergquist PCB is to confirm that there are no defects within the dielectric material.

It verifies that there is no deformation of the dielectric insulation because of any material flaws or fabrication process.

However, it is recommended to keep the number of Proof tests at a minimum.

This is because the testing needs that voltages exceed the start of partial discharge.

Sustained testing at these levels of voltage will reduce the lifespan of the Bergquist PCB dielectric.

Proof testing beyond the beginning of partial discharge will reveal any and all flaws in the dielectric isolation within the PCB.

With correct use of solder mask, any micro-voids, delamination’s or micro-fractures within the dielectric will respond or breakdown as a short when testing.

From an operator safety perspective, the recommended method is DC Proof test that typically uses 1500 to 2250VDC voltage levels.

Because of the capacitive character of the PCB construction, it is important to regulate the voltage increase.

This helps in preventing the failure detect circuits within the tester from tripping and to maintain efficient test control.

Controlling voltage increase also helps in avoiding voltage overshoot or premature surface arcing.

Nevertheless, there is safety concern during DC proof testing of Bergquist PCB.

The operator must confirm that the board being tested is completely discharged before removing it out of the test fixture.

The terminology “Partial Discharge” consists of material damaging (lifespan shortening) incidents such as:

  • Treeing and surface contamination
  • Corona discharges
  • Internal discharges in cavities or voids within the Bergquist PCB
  • Surface discharges at interlinks, especially in fault instigated voltage reversal.

Which are the Connection Techniques Used in Bergquist PCB?

The common methods of connection in Bergquist PCB include:

1. Pin Connectors

Pin headers and pin connectors are usually utilized if an FR-4 panel is joined to a Bergquist PCB assembly.

However, the differential CTE between the base metal and the control panel will lead to stress in the dielectric and solder joint.

For that matter, most modern designs integrate stress relief in the construction of the pin.

Majority use redundant header pins to attain high carrying capacity of current.

2. Power Connections

Only a couple of manufacturers threaded fastener or spade connectors for power connection of surface mount.

In most instances they are lead frame connectors soldered to the PCB pads and arched to contain the shell utilized for encapsulation.

There are also designs integrating a plastic retainer and stress relief appropriate for high amperage.

It is important to note that thru-board connectors should comply with design rules for IMS Bergquist PCBs.

3. Edge Connectors

If employing edge connectors in Bergquist PCB, it is recommended that you finish conductor interfacing using hard gold plating over sulfamate nickel plating.

Moreover, it is as well advisable to incorporate a 45° chamfer.

Always ensure to retain the minimum conductor to edge distance to avoid shorting.

4. Wire Bonding

Straight wire bonding is especially vital in the design of Chip-On-Board (COB) architecture packages.

This method applies the interconnect and surface mount ability of Bergquist PCB in a highly effective thermal design.

5. Custom Connectors

These types of Bergquist PCB connectors are normally tailor made and are not commercially produced.

Which are the Quality Standards for Bergquist PCB?

  • IEC Standards
  • RoHS Standards
  • ASTM Standards
  • UL Standards
  • IPC Standards
  • ISO Standards

With this information, am sure you can get high quality and reliable Bergquist PCBs.

For any inquiries or questions, contact Venture Electronics now.

Scroll to Top