Wenzhou Walbond Electronic Co., Ltd.
Main products:PCB
Contact Us
  • Contact Person : Mr. Lei Willson
  • Company Name : Wenzhou Walbond Electronic Co., Ltd.
  • Tel : 86-577-88756819
  • Fax : 86-577-88950316
  • Address : Zhejiang,Wenzhou,A-1 site,Center Road,Sanxi Industry Park,Ouhai Economic Development Area
  • Country/Region : China
  • Zip : 325000

single calculator pcb

single calculator pcb
Product Detailed
1.1L PCB; 2.good quality,reasonable price; 3.quicker delivery; 4.better logistic service; 5.UL,SGS,ROHS,ISO9000.

We can manufacture PCB in higher quality, more competitive price, quicker delivery and better logistic service…Welcome to send us RFQ!


This form is of my company's process capacity for your reference, for more messages, pls contact with us freely!

MaterialFR-4 / Hi-Tg FR-4 / Lead free Materials(RoHS Compliant)/CEM-3/CEM-1/Aluminium
Layersingle layer,double layer,multi-layer(4-10)
Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)
Copper Thickness1/2OZ-3OZ (35um to 105um),+/-8um(tolerance),purity 99.5%
Impedance Control±10%
Bow and Twist MAX.0.75%(SMT)
Anti-strip 0.88N/mm
Reactance 500V
Min. Value 
Min. Trace/Space Width 6 mil,+/-0.15mm(tolerance)
SMD Pitch 10 mil
BGA Pitch 20 mil
Min Pad Space 4mil(SMT)
Plating Copper Thickness15um
Hole Size0.25mm--6.2mm
Hole Position Tolerance±0.1mm
PTH/NPTH Tolerance±0.15mm(dia.=0.4-1.4mm)
Pad Tolerance±0.1mm(dia.≥0.6mm)
Pad to hole/to pad Tolerance±0.05mm/±0.2mm
Solder Mask 
Pad no Open soldermask must cover all on both side, reject tin on pad  
Pad Open reject soldermask inside the hole on both side              
Solder Mask Thickness0.7mil,raised H≤0.05
Colour green,blue,red,yellow,black,white(LPI/MATT.,UL 94 V0 approved)
Surface Finish 
HALtin height≤0.05mm
ENIGNickel  3-7um,gold:0.5-0.7um
OSP/flash gold 0.2-0.5um
Pealable maskcover all on pad,thickness≥0.20mm
Carbon Inkcover all on trace,Value≤30Ω
Outline Tolerance±0.2mm
V-cut position/depth±0.2mm(length≤100mm)/±0.2mm
E-testing pass percent97% pass for the first time,+/-2%(tolerance) 
Certificate SGS,ISO,ROHS,UL,

Welcome to visit WALBOND ! 

single calculator pcb

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