China FR4 94V0 4-layer PCB
$25.90
Looking for high-quality FR-4 PCBs? This China FR4 94V0 4-layer PCB provided by MOKOPCB is a reliable choice for complex circuit needs. FR4 is one of the most commonly used materials for PCBs, composed of woven glass fiber cloth and epoxy resin. Woven glass fiber cloth provides mechanical strength and dimensional stability. Epoxy resin plays a role in bonding, imparting to the material’s insulating and heat resistance. The ratio varies slightly depending on the grade of FR4, but it is usually about 60% glass fiber and 40% epoxy resin (by weight).
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Layer Counts | 4L |
Base Material | FR-4 |
Board Thickness(mm) | 1.6 |
Max board size(mm) | 570*850 |
PCB size tolerance | ±0.3mm |
Min. Hole Size | 0.3mm |
Min. Line Width | 5mil |
Copper Weight | 1oz |
Surface Finish | ENIG |
Certificate | UL, RoHS, ISO, and REACH |

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Questions & Answers
1.What are the smallest and largest PCB dimensions you support?
Our capabilities cover PCB sizes ranging from a minimum of 10*10 mm to a maximum of 570*1200 mm.
2.What are the differences between FR-4 A1, A2, and A3 grades?
A1 offers superior performance, commonly used in the military industry and communications applications.
A2 is for general use like advanced home appliances, computers, etc.
A3 is a cost-effective option for basic, low-end applications.
3.What are the properties of FR4 materials?
Due to these properties, FR4 materials are widely used in PCB manufacturing.
▪Flame retardant
▪Good electrical properties
▪Water-resistant
▪Good mechanical strength
▪Good insulation in dry or humid conditions
4.What is the difference between FR1, FR2, FR3, and FR4?
One of the main differences is their base materials. FR1 and FR2 use phenolic resin and paper, while FR3 uses epoxy resin with paper, and FR4 uses woven fiberglass with an epoxy resin binder.
5.What are your standard PCB thickness and copper weight options?
Common standard thickness options like 0.8mm, 1.0mm, 1.2mm, 1.6mm, and 2.0mm, with copper weight ranges from 0.5oz to 5oz.