Why FR2 PCB is the Best Option for Your PCB Needs

FR2 PCB is a high quality FR-4 glass fiber epoxy laminate that is an excellent alternative to FR-1 PCB, which contains less epoxy. High speed circuits and high density interconnects can be supported with FR2 PCB. Its superior electrical characteristics make it outstanding for use in the best demanding applications.

Get Our Best Quotation
Quick Quote

PCBTok’s FR2 PCB Benefits & Comparisons to Other Manufacturer

It takes a lot of experience, skill and expertise to get even close to the same quality level that PCBTok’s FR2 PCB boards can achieve. It’s not only the material we use, but also the design and manufacturing process.

When you buy FR2 PCB from PCBTok, you get more than just the perfect product. You’re able to take advantage of our comprehensive list of services that include design assistance and layout optimization, a high-quality printed circuit board manufacturing process, fast delivery times and chips pre-soldered on each board.

Order your FR2 PCB here, and choose from a wide range of PCB specifications. Our online store is easy to use, and will not only make your purchase as simple as possible, but will also send it to you at the right price.

Read More

FR2 PCB By Feature

Single-Sided PCB

We manufacture single-sided FR2 PCB that is manufactured using best quality FR2 material and with the use of latest machinery to ensure superior quality and precision.

Double-Sided PCB

Designed for high-voltage electrical applications, double-sided FR2 PCBs feature a copper clad and a thin layer of high-temperature epoxy resin.

Non-Plated Through PCB

Our non-plated through FR2 PCBs are used in power supplies, solar cells and many other devices. These are cost effective and speed up the production process.

Prototype PCB

Prototype FR2 PCB is the most cost-effective prototype board. The FR2 material allows for top quality fabrication, and it’s easy to solder components onto the board surface.

Quick Turn PCB

Quick Turn FR2 PCB is a professional, turnkey service. It is designed to aid the designer in creating quality printed circuit boards quickly, at low cost and with minimal effort.

Rigid PCB

Rigid FR2 PCB is an excellent choice for engineering and industrial products. Rigid FR2 is perfect for industrial applications requiring long-term reliability.

The Complete Introduction to FR2 PCB

Flame resistant 2 printed circuit boards are used in applications where there is a threat of fire or flame. The FR2 PCBs are used in applications that require flame-retardant materials, such as power supplies and electrical connectors.

The FR2 PCBs are manufactured using flame-retardant material. This provides protection against fire and flame for the circuit board, which makes it ideal for use in areas where there is risk of fire or flame.

FR2 PCBs have excellent thermal conductivity characteristics, which makes them suitable for use in high-temperature environments such as industrial processes and medical equipment. They also have good electrical properties and good mechanical strength characteristics, which makes them suitable for use in harsh conditions.

The Complete Introduction to FR2 PCB
FR2 PCB Specifications

FR2 PCB Specifications

FR2 is a flame retardant material with good thermal and electrical properties, which is widely used in various applications. FR-2 has a high density, low thermal expansion coefficient, low dielectric constant, low dissipation factor and good resistance to chemicals and corrosion. Therefore, it can be used for the production of heat sinks, spacers and other components that need to withstand high temperatures.

The FR-2 PCB is made with epoxy resin as a core material for insulation, and impregnated with brominated flame retardants. The epoxy resin used contains glass fibers and particles of copper. The copper gives the PCB strength while maintaining flexibility and elasticity.

FR2 Compared to other Fire-Resistant PCBs

Fire-resistant PCBs are designed to withstand high temperatures. They can be manufactured using materials like FR1, FR2, FR3 and FR4. These different types of PCBs differ in terms of heat resistance, electrical strength and thermal properties.

FR2 is a stronger, more durable option for high-temperature applications. It can withstand higher temperatures and has better electrical properties than FR1.

FR2 is a higher grade of FR1 and is used in applications where heat resistance is required as well as where there is high power dissipation such as in audio amplifiers or lighting equipment.

FR2 Compared to other Fire-Resistant PCBs

Dependable FR2 PCB Fabricator | PCBTok

Dependable FR2 PCB Fabricator PCBTok
Dependable FR2 PCB Fabricator PCBTok (1)

Are you looking for a dependable FR2 PCB fabricator? PCBTok is here to help. We offer high-quality, reliable services, and we’re proud to be the premier FR2 PCB fabricator in the region.

Our team includes some of the most experienced FR2 PCB fabricators in the industry. They know that when you need a reliable and consistent product on time and on budget, it’s crucial to use only quality materials and processes. That’s why we always work with top-of-the-line equipment and adhere to strict standards of quality control.

Our team can custom fabricate any size or shape of FR2 PCBs. If you need an order of 1000 or more, we can even get them done overnight!

You won’t find another FR2 PCB fabricator in your area who can offer such fast turnaround times at such competitive prices with such high quality results.

FR2 PCB Fabrication

NEMA Grade Material PCB

FR-2 is an excellent choice for applications where heat and flame resistance is required. The FR-2 material has good dimensional stability and is easily processed by standard PCB manufacturing methods.

This material is commonly used in the electronics industry because of its low smoke emission, high dielectric strength, and low outgassing characteristics; it also offers excellent moisture resistance.

FR-2 (Flame Resistant 2) is a NEMA designation for synthetic resin bonded paper, a composite material made of paper impregnated with a plasticized phenol formaldehyde resin, used in the manufacture of printed circuit boards.

Phenolic Resin Types for FR2 PCB

We offer two phenolic resin types for your FR2 PCB: novalocs and resoles. These types work for many applications, including coating, circuit boards, and adhesives.

Novalocs are a phenolic resin that is used to create a hard, tough surface on FR2. This resin is more rigid than other phenolics like resoles and can be used for a variety of different applications.

Resoles are another type of phenolic resin that comes in both solid and liquid form and works well with FR2 PCBs. The resin can be used as an adhesive or coating depending on how much you mix into the solution before using it on your product.

OEM & ODM FR2 PCB Applications


The FR2 PCB are used in manufacturing electrical toys. The FR2 houses a microcontroller and all the necessary components to make your invention a reality.


The FR2 board is made from high-quality materials and offers the ideal platform for manufacturers who look for the ultimate performance from their sensors.

LED Lamp

The FR2 PCB are used in manufacturing LED lamp, with low thermal expansion, good mechanical strength and high temperature resistance.

Wrist Watch

FR2 PCB are used to make wrist watches because of its durability and functionality. The material used for the manufacturing is of high quality and is quite efficient.


FR2 PCB are used in manufacturing television and are meant to be used in high-pressure environments. Ideal for exposure to high-temperature environments.

Reputable and Proved Best FR2 PCB Manufacturer PCBTok
Reputable and Proved Best FR2 PCB Manufacturer | PCBTok

PCBTok is a reputable and proved best FR2 PCB manufacturer in China. We  specialize in the manufacturing high-quality FR2 PCBs.

FR2 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.

Quick Quote
  • “The PCBs from PCBTok are great. Sound quality is the most important factor when we consider our PCBs. Our PCBs have to have perfect audio quality. I personally tested the sound of our PCBs, and it was exactly as what we wanted. The cost was lower and the quality matched, if not exceeded, other quotes we had for the same product. I look forward to making future purchases with PCBTok”

    Nikko Barett, CEO of Audio Tech Company Tech from Cochabamba, Bolivia
  • “PCBTok provides a complete service from PCB manufacturing to ordering parts and testing. In comparison to other manufacturers, we appreciate PCBTok’s excellent communication all throughout entire manufacturing process. Potential issues are identified early and addressed right away. As an outcome, we received high quality PCB with a really minimal reject percentage. PCBTok ultimately offers reasonable prices when taking into consideration the services performed. “

    Layton Greene, IT Support Specialist, Blenheim, New Zealand
  • “PCBTok is a great service and I’m glad I found it. Switching to PCBTok allowed me to get my first PCB manufactured quickly and economically, with a minimum of risk. The turnaround time was as promised and I will be using PCBTok as my first choice for manufacturing in the future. I appreciate the PCB service you have provided, and I recommend your PCB service to others. You were helpful with all my questions, and your technical support was quick and helpful!”

    Bryson Tiller, Procurement Category Manager from Queensland, Australia
Update cookies preferences
Scroll to Top