HASL FR5 FR4 Printed Circuit Board With IATF16949 Certificates

HASL FR5 FR4 Printed Circuit Board With IATF16949 Certificates

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PCB Material Composition
PCB generally consists of four layers, which are heat laminated together into a single layer. The different types of PCB materials used in PCB from top to bottom includes Silkscreen, Soldermask, Copper and Substrate.

The last of those layers, substrate, is made of fiberglass and is also known as FR4, with the FR letters standing for "fire retardant." This substrate layer provides a solid foundation for PCBs, though the thickness can vary according to the uses of a given board.

A cheaper range of boards also exist on the market that don't utilize the same aforementioned PCB substrate materials, but instead consist of phenolics or epoxies. Due to the thermal sensitivity of these boards, they tend to lose their lamination easily. These cheaper boards are often easy to identify by the smell they give off when being soldered.

PCB second layer is copper, which is laminated onto the substrate with a mixture of heat and adhesive. The copper layer is thin, and on some boards there are two such layers - one above and one below the substrate. PCBs with only one layer of copper tend to be used for cheaper electronics devices.

The massively-used copper clad laminate (CCL) can be classified into different categories according to different classification standards including reinforcing material, used resin adhesive, flammability, CCL performance. The brief classification of CCL is shown in the following table.

PCB ASSEMBLY CAPABILITIES

With 20 years pcb fabrication and pcb assembly experienced, FASTPCBA has occupied a place in industry pcb production, automotive circuit board, medical pcb assembly, smart home pcb fabrication, communication pcba, military & aerospace pcba etc.

1. 100% Brand New Parts from Reliable Source
2. 100% IQC inspection
3. Suppliers Chain Management & MRP System
4. Rapid lead time
5. Passive and Active components are available
6. RoHS and SGS compliance

7. ISO14000, 13485, ISO9001 and IATF16949 certificates simultaneously

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