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"Through hole" components are mounted by their wire leads passing through the board and soldered to traces on the other side. "Surface mount" components are attached by their leads to copper traces on the same side of the board. A board may use both methods for mounting components. PCBs with only through-hole mounted components are now uncommon. Surface mounting is used for transistors, diodes, IC chips, resistors and capacitors. Through-hole mounting may be used for some large components such as electrolytic capacitors and connectors.
The pattern to be etched into each copper layer of a PCB is called the "artwork". The etching is usually done using photoresist which is coated onto the PCB, then exposed to light projected in the pattern of the artwork. The resist material protects the copper from dissolution into the etching solution. The etched board is then cleaned. A PCB design can be mass-reproduced in a way similar to the way photographs can be mass-duplicated from film negatives using a photographic printer.
Description | Capability |
Laminate materials | FR4, High TG FR4, High Frequency, Alum, FPC... |
Number of layers | 1-48 |
Min.thickness for inner layers (Cu thickness are excluded) | 0.003”(0.07mm) |
Standard | (0.1-4mm±10%) |
Board Thickness | Single/Double:0.008±0.004” |
4layer:0.01±0.008” | |
8layer:0.01±0.008” | |
Bow and twist | no more than 7/1000 |
Outer Cu weight | 0.5-4 0z |
Inner Cu weight | 0.5-3 0z |
Min size | 0.0078”(0.2mm) |
Drill deviation | ±0.002″(0.05mm) |
PTH hole tolerance | ±0.002″(0.005mm) |
NPTH hole tolerance | ±0.002″(0.005mm) |
Color | Green,white,black,red,blue… |
Min solder mask clearanace | 0.003″(0.07mm) |
Solder Mask Thickness | (0.012*0.017mm) |
Silkscreen Color | white,black,yellow,blue… |
Silkscreen Min size | 0.006″(0.15mm) |
Max Size of Finish Board | 700*460mm |
Surface Finish | HASL,ENIG,immersion silver,immersion tin,OSP… |
PCB Outline | Square,circle,irregular(with jigs) |
Package | QFN,BGA,SSOP,PLCC,LGA |
With 20 years pcb fabrication and pcb assembly experienced, FASTPCBA has occupied a place in communication pcba, automotive circuit board, medical pcb assembly, smart home pcb fabrication, industry pcb production, military & aerospace pcba etc.
Jingbang was ISO9001 certified in December, 2001, ISO14000 certified in May 2003 and UL approved in June, 2004, and TS16949:2002 in Jan. 2010. We have our own separate offices in Peking, Shanghai and other domestic cities. Our business network extends far to Asia, Europe, America and Australia. With the cooperation with customers from Japanese, Germany and other developed countries, we have used internationally advanced technology and management system. Moreover, we have improved our technology from their high standard and strict quality requirements. The market system of JingBang is increasingly extending and the scale of JingBang is expanding.We have rich experience in manufacturing PCB.
Our daily capacity of PCB is 1200 square meters and we can deliver SS and DS PCB samples within 24 hours, 4-8 layer PCB in 3-5 working days. For the batch quantity for double side PCB, the lead time is 3-5 working days and 4-8 layer PCB is 5-8 days. The quick and fast lead time stably ensures our customer of quick research speed to occupying the market.For the convenience of better cooperating with our customers, we purchased and reestablished a SMT factory in 2005.