Good Wholesale Vendors Smd Pcb Assembly - Automobile chassis brake system about the Cars Circuit Board – Welldone
Good Wholesale Vendors Smd Pcb Assembly - Automobile chassis brake system about the Cars Circuit Board – Welldone Detail:
4-layers, board thickness 1.6mm
Min hole size 0.4mm, High TG
Immersion gold with impedance
Basic copper 2OZ
2-layers, board thickness1.6mm
Min hole size 0.4mm
Immersion Gold
Basic copper 2OZ
2-layers, board thickness1.6mm
Min hole size 0.8mm
LF HASL
Basic copper 1OZ
2-layers, board thickness1.6mm
Min hole size 0.4mm
Immersion Tin
Basic copper 1OZ
2-layers，board thickness1.6mm
Min hole size 0.3mm
Immersion Gold
Basic copper 1OZ
FR-4 PCB Technical Capability
| Item | Normal capacity | Limit capacity | Item | Normal capacity | Limit capacity |
| Layer No. | 2-16 | ≤20 | Max. copper thickness( Inner layer) | 4OZ | 5OZ |
| Core board thickness | 0.075-2.0mm | 0.05-3.0mm | Max. copper thickness( Outer layer) | 4OZ | 6OZ |
| min. PTH to copper | 165.1um | 152.4um | Min. space between SMD pads for S/M bridge | 203.2um | 177.8um |
| Board thickness(double sides) | 0.3-3.2mm | 0.3-4mm | Minimum legend width/height | 127um /762um | 101.6um /609.6um |
| Board thickness
(Multi-layer) |
0.6-3.2mm | 0.6-4mm | Outline dimension tolerance | ±101.6um | ±76.2um |
| Tolerance of board thickness（T≤0.8mm） | 0.1mm | 0.075mm | Bow & twist （T≤1mm） | ≤0.75% | ≤0.5% |
| Tolerance of board thickness
（T＞0.8mm） |
±10% | ±5% | Bow & twist （T≤1mm） | ≤0.5% | ≤0.3% |
| Min. line width | 76.2um | 63.5um | Precision of hole to hole | ±0.05mm | / |
| Minimum line space | 68.58um | 63.5um | Impedance control range | ±10% | ±8% |
| Minimum hole diameter | 0.2mm | 0.15mm | Aspect ratio (0.2mm） | 10:1 | 12:1 |
| Tolerance of press fit hole diameter | 0.05mm | 0.05mm | Finished product size | 55-600mm | 10-620mm |
| profiling method | CNC、 V-CUT、 Punching or mold | ||||
| Surface treatment | EING、 OSP、 Immersion silver、 Selective OSP+ENIG | ||||
| Laminate type | FR-4.0, FR-4.1(Normal TG, middle TG, high TG), CEM-3, | ||||
Factory Show
Introduction of FR4 materials
FR in FR4 represents a flame retardant, and the number 4 distinguishes the material from other materials in this class.FR4 is a glass fiber reinforced epoxy laminate that looks like a thin woven cloth sheet. The term FR4 also represents the grade used to make these laminates. The fiberglass structure provides structural stability for the material. The glass fiber is covered with flame retardant epoxy. This gives the material durability and strong mechanical properties. All of these features make the FR4 printed circuit board very popular among electronic contract manufacturers.
Product detail pictures:
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No matter new customer or old customer, We believe in long term and trusted relationship for Good Wholesale Vendors Smd Pcb Assembly - Automobile chassis brake system about the Cars Circuit Board – Welldone , The product will supply to all over the world, such as: London, Angola, Ecuador, We have more than 8 years of experience in this industry and have a good reputation in this field. Our products have won praise from customers worldwide. Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation and sincerely welcome you to join us.
By Doreen from Mexico - 2017.10.23 10:29
The factory can meet continuously developing economic and market needs, so that their products are widely recognized and trusted, and that's why we chose this company.
By Ricardo from Suriname - 2017.09.26 12:12
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