K&T ltd

About K&T ltd

Dear Sir


With being in the industry for more than 10 years,wea are a professional PCB manufacturer.500 people and more than 30 engineers are dedicated to provide customer product with good quality.

A mature system provide the solution to the Prototype product, samples could be ready within 24 hours, and we can produce up to 30 layers.

With 5 Laser drillers, We can produce Mobile PCB,and Bluetooth related PCB.



please do not hesitate to drop your enuiry to us and look forward to hear from you soon.

Printed Circuit Board

Item Mass processing capability
Small batch processing capability

Layer (Max.)
2-28 26-32
Type of the board material FR-4, high TG board, aluminum board Rogers, etc., F4, BT

Rogers,etc
PTFE，PPO ，PPE
E-65，ect

Compound pressed board 4 layers 6 layers 6 layers 8 layers
Maximum Size 610mm X 1100mm
Outline Size Tolerance
±0.13mm ±0.10mm
V-CUT Deepness Tolerance
+/- 0.15 mm (V-CUT) ：+/- 0.1 mm (CNC V-CUT)
BoardThicknessRange
0.1mm--6.00mm 0.10mm--8.00mm
Board Thickness Tolerance( t≥0.8mm)
±8% ±5%
Board Thickness Tolerance (t＜0.8mm) ±10% ±8%
Medium Thickness
0.076mm--6.00mm 0.076mm--0.100mm
Minimum Line Width
0.75mm（3mil） 0.063mm(2.5mil)
Minimum Line Distance
0.75mm（3mil） 0.063mm(2.5mil)
Line Margin 0.2 mm （CNC） ：0.30 mm (啤板)： 0.50 mm (V-CUT)
Outer layer copper thickness 8.75um--175um 8.75um--280um
Inner layer copper thickness
8.75um--175um 8.75um--280um
Drill hole size (power drill)
0.25mm--6.00mm 0.15mm--0.25mm
Hole size (power drill)
0.20mm--6.00mm 0.10mm--0.15mm
Hole size tolerance (power drill) +/- 0.08 mm (copper immersion hole) +/- 0.05 mm (non- copper immersion hole) +0.1/-0.05 mm (injection hole)

Hole position deviation (power drill) +/-0.075mm: (drill hole) : +/- 0.10 mm (injection hole) 0.050mm
Laser hole size
0.10mm 0.075mm
Aspect Ratio
10:1 12:1
Solder mask type sensitive green, yellow, black, purple, blue ink
Minimum width of solder mask bridge 0.10mm 0.075mm
Minimum size of solder mask separation ring 0.05mm 0.025mm
Taphole diameter
0.25mm--0.60mm 0.60mm-0.80mm
Impedance tolerance
±10% ±5%
Surface processing type
HAL, plating nickel, thick & hard/soft metal, chemical nickel, lead-free tin immersion, lead-free H.A.S

Best regards
Tina
e-mail:tina321@126.com
msn:keidrontina@hotmail.com
MP:86+13760393081
Tel/Fax:86+755-89909517