What is an Epoxy Resin PCB?

You need to understand the two elements of this term, which are:

Epoxy Resin and Printed Circuit Boards.

Epoxy Resin is a raw material for Copper Clad Laminate

Printed circuit boards, using conductive lines, make electronic connections alive.

An Epoxy Resin PCB is then defined as a PCB that is made using epoxy resin.

There are many types of epoxy resin material,

So there are many types of this kind of PCB.

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Where to Obtain Epoxy Resin Circuit Boards?

When using different types of epoxy resin for their corresponding PCB products,

There are guidelines that must be followed.

You have two options: you can handle the challenging work yourself,

Or you can let a qualified PCB manufacturer handle it.

Whatever your requirements, PCBTok is a reliable option for your company.

For all of your PCB needs, we provide you with tangible results!

Did you know that we can fabricate any layer of Build Up Multilayer board made of epoxy resin for a reasonable price?

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Epoxy Resin PCB By Feature

Epoxy Resin Glass Fiber PCB

With this sub-classification, the materials G-10, G-11 (glass composite), FR4, and FR5 are included, all flame retardant.

Epoxy Resin Paper Base PCB

The less expensive FR1, FR2, and FR3 varieties fall under this category. This is made of hard paper and/or phenolic epoxy resin.

Epoxy Resin Composite PCB

CEM-1 and its closest relative CEM-3 are the typical Epoxy Resin Composite PCB materials. In terms of price, they are cheaper.

Epoxy Resin PCB

When using epoxy resin for power or high voltage applications, high Tg is important because it can withstand 180 degrees Celsius.

Polyimide Epoxy Resin PCB

The flex PCB category, or FPC, uses polyimide epoxy resin. Polyimide is utilized because it is compatible with a variety of substrates.

HDI Epoxy Resin PCB

Epoxy Resin used for HDI PCB must ultimately increase track density in accordance with prevailing semiconductor industry standards.

What is Epoxy Resin in Circuit Boards?

The main element of the copper clad laminate on PCBs is the epoxy resin material.

This material is used so that the board will be electrically conductive.

The epoxy resin material, whether fiberglass-based or paper-based is subject to lamination.

During the lamination process, the epoxy resin itself melts into the cladding.

The choice of epoxy resin is up to the PCB designer.

But in doing so, the designer must weigh price range vs. epoxy resin material characteristics.

What is Epoxy Resin in Circuit Boards
Purpose of Using Epoxy Resin on PCB

Purpose of Using Epoxy Resin on PCB

The main answer is, epoxy resin is a form or protection.

Another way of saying it is the epoxy resin is a form of insulation on circuit boards.

But protection for what?

The following things can harm a PCB when the epoxy resin is weak or wrongly applied.:

  • Excessive heat – can happen when the end device is in hot environs
  • Vibration – when the end device is inside a gadget that has engine issues
  • Shock – as in the case when the end device is dropped
  • Temperature changes – e.g. fluctuating weather

What are the Types of Epoxy Resin PCB?

The types of epoxy resin material determine what type of Epoxy Resin PCB it is. There are numerous options for epoxy resin materials due to the large number of customers:

  • Fiberglass-reinforced (i.e. FR4 or FR5)
  • Paper-based epoxy resin
  • Composite epoxy resin like CEM-1 or CEM-3
  • High Tg, High CTI epoxy resin
  • Lead-free options like ceramic variants

Even if there is an extensive choice, there is no doubt that the FR4 material will prevail.

It’s because it is flame-retardant, and strong due to its reinforced fiberglass content. It is most economical too.

What are the Types of Epoxy Resin PCB

We’re a Reputable Epoxy Resin PCB Manufacturer

We’re a Reputable Epoxy Resin PCB Manufacturer
We’re a Reputable Epoxy Resin PCB Manufacturer 2

You can get assistance from PCBTok with your Epoxy Resin PCB order.

If you have a design, just send us the Gerber file.

We will support product development from start to finish if you need assistance.

This covers everything from accurate production process monitoring to stringent inspections.

If there is an issue with your PCB order, we will assist you in identifying the main cause.

We will provide you with a complete 8D report for this because we want to be as helpful as we can be.

Epoxy Resin PCB Fabrication

What is Epoxy Resin Versus Copper Clad Laminate

There is some clarification of the terms so that you are aware of the distinction:

  • Another name for copper cladding laminate is CCL. This serves as the foundation for all PCBs.
  • Copper cladding on its own will not suffice. Without reinforcement, which the epoxy resin can provide, it is weak.
  • The epoxy resin acts as the strengthener, insulator and protector of the PCB base

You should know that the customer depends on the PCB raw materials to ensure that the board functions optimally.

Newest Requirements on Epoxy Resin Usage

There are some current trends in the application of this copper cladding raw material that are noteworthy:

  • There is a market for lead-free compatible PCBs or lead-free PCB due to the directives by the EU and other nations for environmentally friendly PCB material.
  • For radar or microstrip applications, many customers sporadically require PTFE or epoxy resin filled with ceramic.
  • Additionally, mobile phones are in demand for BT (Bismaleimide Triazine) epoxy resin.

What is best for each customer depends on the device’s PCB schematic.

epoxy resin pcb banner 2
Strong Circuit Boards Impregnated with Epoxy Resin

As PCBTok only gives the best PCBs,

We don’t compromise with the quality of our raw materials.

Epoxy Resin PCB Production Details As Following Up

NO Item Technical Specification
Standard Advanced
1 Layer Count 1-20 layers 22-40 layer
2 Base Material KB、Shengyi、ShengyiSF305、FR408、FR408HR、IS410、FR406、GETEK、370HR、IT180A、Rogers4350、Rogers400、PTFE Laminates(Rogers series、Taconic series、Arlon series、Nelco series)、Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
3 PCB Type Rigid PCB/FPC/Flex-Rigid Backplane、HDI、High multi-layer blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
4 Lamination type Blind&buried via type Mechanical blind&burried vias with less than 3 times laminating Mechanical blind&burried vias with less than 2 times laminating
HDI PCB 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating
5 Finished Board Thickness 0.2-3.2mm 3.4-7mm
6 Minimum Core Thickness 0.15mm(6mil) 0.1mm(4mil)
7 Copper Thickness Min. 1/2 OZ, Max. 4 OZ Min. 1/3 OZ, Max. 10 OZ
8 PTH Wall 20um(0.8mil) 25um(1mil)
9 Maximum Board Size 500*600mm(19”*23”) 1100*500mm(43”*19”)
10 Hole Min laser drilling size 4mil 4mil
Max laser drilling size 6mil 6mil
Max aspect ratio for Hole plate 10:1(hole diameter>8mil) 20:1
Max aspect ratio for laser via filling plating 0.9:1(Depth included copper thickness) 1:1(Depth included copper thickness)
Max aspect ratio for mechanical depth-
control drilling board(Blind hole drilling depth/blind hole size)
0.8:1(drilling tool size≥10mil) 1.3:1(drilling tool size≤8mil),1.15:1(drilling tool size≥10mil)
Min. depth of Mechanical depth-control(back drill) 8mil 8mil
Min gap between hole wall and
conductor (None blind and buried via PCB)
7mil(≤8L),9mil(10-14L),10mil(>14L) 5.5mil(≤8L),6.5mil(10-14L),7mil(>14L)
Min gap between hole wall conductor (Blind and buried via PCB) 8mil(1 times laminating),10mil(2 times laminating), 12mil(3 times laminating) 7mil(1 time laminating), 8mil(2 times laminating), 9mil(3 times laminating)
Min gab between hole wall conductor(Laser blind hole buried via PCB) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2)
Min space between laser holes and conductor 6mil 5mil
Min space between hole walls in different net 10mil 10mil
Min space between hole walls in the same net 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB) 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB)
Min space bwteen NPTH hole walls 8mil 8mil
Hole location tolerance ±2mil ±2mil
NPTH tolerance ±2mil ±2mil
Pressfit holes tolerance ±2mil ±2mil
Countersink depth tolerance ±6mil ±6mil
Countersink hole size tolerance ±6mil ±6mil
11 Pad(ring) Min Pad size for laser drillings 10mil(for 4mil laser via),11mil(for 5mil laser via) 10mil(for 4mil laser via),11mil(for 5mil laser via)
Min Pad size for mechanical drillings 16mil(8mil drillings) 16mil(8mil drillings)
Min BGA pad size HASL:10mil, LF HASL:12mil, other surface technics are 10mil(7mil is ok for flash gold) HASL:10mil, LF HASL:12mil, other surface technics are 7mi
Pad size tolerance(BGA) ±1.5mil(pad size≤10mil);±15%(pad size>10mil) ±1.2mil(pad size≤12mil);±10%(pad size≥12mil)
12 Width/Space Internal Layer 1/2OZ:3/3mil 1/2OZ:3/3mil
1OZ: 3/4mil 1OZ: 3/4mil
2OZ: 4/5.5mil 2OZ: 4/5mil
3OZ: 5/8mil 3OZ: 5/8mil
4OZ: 6/11mil 4OZ: 6/11mil
5OZ: 7/14mil 5OZ: 7/13.5mil
6OZ: 8/16mil 6OZ: 8/15mil
7OZ: 9/19mil 7OZ: 9/18mil
8OZ: 10/22mil 8OZ: 10/21mil
9OZ: 11/25mil 9OZ: 11/24mil
10OZ: 12/28mil 10OZ: 12/27mil
External Layer 1/3OZ:3.5/4mil 1/3OZ:3/3mil
1/2OZ:3.9/4.5mil 1/2OZ:3.5/3.5mil
1OZ: 4.8/5mil 1OZ: 4.5/5mil
1.43OZ(positive):4.5/7 1.43OZ(positive):4.5/6
1.43OZ(negative ):5/8 1.43OZ(negative ):5/7
2OZ: 6/8mil 2OZ: 6/7mil
3OZ: 6/12mil 3OZ: 6/10mil
4OZ: 7.5/15mil 4OZ: 7.5/13mil
5OZ: 9/18mil 5OZ: 9/16mil
6OZ: 10/21mil 6OZ: 10/19mil
7OZ: 11/25mil 7OZ: 11/22mil
8OZ: 12/29mil 8OZ: 12/26mil
9OZ: 13/33mil 9OZ: 13/30mil
10OZ: 14/38mil 10OZ: 14/35mil
13 Dimension Tolerance Hole Position 0.08 ( 3 mils)
Conductor Width(W) 20% Deviation of Master
1mil Deviation of Master
Outline Dimension 0.15 mm ( 6 mils) 0.10 mm ( 4 mils)
Conductors & Outline
( C – O )
0.15 mm ( 6 mils) 0.13 mm ( 5 mils)
Warp and Twist 0.75% 0.50%
14 Solder Mask Max drilling tool size for via filled with Soldermask (single side) 35.4mil 35.4mil
Soldermask color Green, Black, Blue, Red, White, Yellow,Purple matte/glossy
Silkscreen color White, Black,Blue,Yellow
Max hole size for via filled with Blue glue aluminium 197mil 197mil
Finish hole size for via filled with resin  4-25.4mil  4-25.4mil
Max aspect ratio for via filled with resin board 8:1 12:1
Min width of soldermask bridge Base copper≤0.5 oz、Immersion Tin: 7.5mil(Black), 5.5mil(Other color) , 8mil( on copper area)
Base copper≤0.5 oz、Finish treatment not Immersion Tin : 5.5 mil(Black,extremity 5mil), 4mil(Other
color,extremity 3.5mil) , 8mil( on copper area
Base coppe 1 oz: 4mil(Green), 5mil(Other color) , 5.5mil(Black,extremity 5mil),8mil( on copper area)
Base copper 1.43 oz: 4mil(Green), 5.5mil(Other color) , 6mil(Black), 8mil( on copper area)
Base copper 2 oz-4 oz: 6mil, 8mil( on copper area)
15 Surface Treatment Lead free Flash gold(electroplated gold)、ENIG、Hard gold、Flash gold、HASL Lead free、OSP、ENEPIG、Soft gold、Immersion silver、Immersion Tin、ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finge
Leaded Leaded HASL
Aspect ratio 10:1(HASL Lead free、HASL Lead、ENIG、Immersion Tin、Immersion silver、ENEPIG);8:1(OSP)
Max finished size HASL Lead 22″*39″;HASL Lead free 22″*24″;Flash gold 24″*24″;Hard gold 24″*28″;ENIG 21″*27″;Flash gold(electroplated gold) 21″*48″;Immersion Tin 16″*21″;Immersion silver 16″*18″;OSP 24″*40″;
Min finished size HASL Lead 5″*6″;HASL Lead free 10″*10″;Flash gold 12″*16″;Hard gold 3″*3″;Flash gold(electroplated gold) 8″*10″;Immersion Tin 2″*4″;Immersion silver 2″*4″;OSP 2″*2″;
PCB thickness HASL Lead 0.6-4.0mm;HASL Lead free 0.6-4.0mm;Flash gold 1.0-3.2mm;Hard gold 0.1-5.0mm;ENIG 0.2-7.0mm;Flash gold(electroplated gold) 0.15-5.0mm;Immersion Tin 0.4-5.0mm;Immersion silver 0.4-5.0mm;OSP 0.2-6.0mm
Max high to gold finger 1.5inch
Min space between gold fingers 6mil
Min block space to gold fingers 7.5mil
16 V-Cutting Panel Size 500mm X 622 mm  ( max. ) 500mm X 800 mm ( max. )
Board Thickness 0.50 mm (20mil) min. 0.30 mm (12mil) min.
Remain Thickness 1/3 board thickness 0.40 +/-0.10mm( 16+/-4 mil )
Tolerance ±0.13 mm(5mil) ±0.1 mm(4mil)
Groove Width 0.50 mm (20mil) max. 0.38 mm (15mil) max.
Groove to Groove 20 mm (787mil) min. 10 mm (394mil) min.
Groove to Trace 0.45 mm(18mil) min. 0.38 mm(15mil) min.
17 Slot Slot size tol.L≥2W PTH Slot: L:+/-0.13(5mil) W:+/-0.08(3mil) PTH Slot: L:+/-0.10(4mil) W:+/-0.05(2mil)
NPTH slot(mm) L+/-0.10 (4mil) W:+/-0.05(2mil) NPTH slot(mm) L:+/-0.08 (3mil) W:+/-0.05(2mil)
18 Min Spacing from hole edge to hole edge 0.30-1.60 (Hole Diameter) 0.15mm(6mil) 0.10mm(4mil)
1.61-6.50 (Hole Diameter) 0.15mm(6mil) 0.13mm(5mil)
19 Min spacing between hole edge to circuitry pattern PTH hole: 0.20mm(8mil) PTH hole: 0.13mm(5mil)
NPTH hole: 0.18mm(7mil) NPTH hole: 0.10mm(4mil)
20 Image transfer Registration tol Circuit pattern vs.index hole 0.10(4mil) 0.08(3mil)
Circuit pattern vs.2nd drill hole 0.15(6mil) 0.10(4mil)
21 Registration tolerance of front/back image 0.075mm(3mil) 0.05mm(2mil)
22 Multilayers Layer-layer misregistration 4layers: 0.15mm(6mil)max. 4layers: 0.10mm(4mil) max.
6layers: 0.20mm(8mil)max. 6layers: 0.13mm(5mil) max.
8layers: 0.25mm(10mil)max. 8layers: 0.15mm(6mil) max.
Min. Spacing from Hole Edge to Innerlayer Pattern 0.225mm(9mil) 0.15mm(6mil)
Min.Spacing from Outline to Innerlayer Pattern 0.38mm(15mil) 0.225mm(9mil)
Min. board thickness 4layers:0.30mm(12mil) 4layers:0.20mm(8mil)
6layers:0.60mm(24mil) 6layers:0.50mm(20mil)
8layers:1.0mm(40mil) 8layers:0.75mm(30mil)
Board thickness tolerance 4layers:+/-0.13mm(5mil) 4layers:+/-0.10mm(4mil)
6layers:+/-0.15mm(6mil) 6layers:+/-0.13mm(5mil)
8-12 layers:+/-0.20mm (8mil) 8-12 layers:+/-0.15mm (6mil)
23 Insulation Resistance 10KΩ~20MΩ(typical:5MΩ)
24 Conductivity <50Ω(typical:25Ω)
25 Test voltage 250V
26 Impedance control ±5ohm(<50ohm), ±10%(≥50ohm)

PCBTok 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 PCBTok and offers very competitive rates to customers of PCBTok.
It normally takes 3-7 business days for the package to be delivered around the world.


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.


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.


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.


5. Air, Sea/Air, and Sea

If your order is of large volume with PCBTok, 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.

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 a credit card: Visa, Visa Electron, MasterCard, Maestro.

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  • “They were pleasant to work with, quick to respond, and meticulous in their work. The original design I had is something I haven’t improved on my own in a very long time. The design and routing they made for me are flawless. Overall, this is good and the FR4 used appears to be of high quality. Especially given that I have a sizable friend network in the PCB sector, I will definitely recommend to family and friends, and I intend to return with lots more orders! Many thanks to the PCBTok team.”

    Martin White, Marketing Manager from Wodonga, NSW, Australia
  • “The PCBTok team handled the details of my PCB order in a very painstaking, meticulous, and careful manner. A thorough redesign of my older PCB version, including a new schematic, layout, and power module, was long overdue. There was excellent collaboration and work here! They immediately provided me with a quote and got to work solving my problems. I heartily recommend them to you as well.”

    Nicco Sharma, PCB Librarian & Layout Engineer from Middlesbrough, UK
  • “In less than a day after getting in touch with this online PCB shop, I have a plan! The PCBTok team is incredibly welcoming and honest about everything that will be done, how long it will take, and how much it will cost. The initial estimate was very reasonable and varied. The quote provided was unbeatable once the order was finalized. Their service is excellent at responding very quickly, which is good in my book.”

    Basil Charalambous, Director Strategic Sourcing from Patras, Greece
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