Well-designed Ems Pcb Assembly - Automobile chassis brake system about the Cars Circuit Board – Welldone
Well-designed Ems 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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Our mission is usually to turn into an innovative provider of high-tech digital and communication devices by providing worth added design and style, world-class producing, and repair capabilities for Well-designed Ems Pcb Assembly - Automobile chassis brake system about the Cars Circuit Board – Welldone , The product will supply to all over the world, such as: Barbados, Vietnam, Cyprus, We believe that good business relationships will lead to mutual benefits and improvement for both parties. We have established long-term and successful cooperative relationships with many customers through their confidence in our customized services and integrity in doing business. We also enjoy a high reputation through our good performance. Better performance will be expected as our principle of integrity. Devotion and Steadiness will remain as ever.
By jari dedenroth from Juventus - 2018.12.28 15:18
Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.
By Mandy from San Francisco - 2017.12.02 14:11
