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Technology & Capability

Features Capability Notes Patterns
Layer count 1,2,4,6 layers The number of copper layers in the board.
Controlled Impedance 4/6 layer, default layer stack-up Controlled Impedance PCB Layer Stackup
PCB Impedance Calculator
Material FR-4 FR-4 Standard Tg 130-140/ Tg 155
Dielectric constant 4.5(double-side PCB) 7628 structure 4.6
2313 structure 4.05
2116 structure 4.25
Max. Dimension 400x500mm The maximum dimension Vishal can accept
Dimension Tolerance ±0.2mm ±0.2mm for CNC routing, and ±0.4mm for V-scoring
Board Thickness 0.4/0.6/0.8/1.0/1.2/1.6/2.0mm The thickness of finished board
Thickness Tolerance
( Thickness≥1.0mm)		 ± 10% e.g. For the 1.6mm board thickness, the finished board thickness ranges from 1.44mm(T-1.6×10%) to 1.76mm(T+1.6×10%)
Thickness Tolerance
( Thickness < 1.0mm) 		± 0.1mm e.g. For the 0.8mm board thickness, the finished board thickness ranges from 0.7mm(T-0.1) to 0.9mm(T+0.1).
Finished Outer Layer Copper 1 oz/2 oz (35um/75um) Finished copper weight of outer layer is 1oz or 2oz.
Finished Inner Layer Copper 0.5 oz (17um) Finished copper weight of inner layer is 0.5oz only.
Features Capability Notes Patterns
Drill Hole Size (Mechanical) 0.20mm- 6.30mm Min. drill size is 0.20mm. Max. drill size is 6.30mm.
Drill Hole Size Tolerance +0.13/-0.08mm e.g. for the 0.6mm hole size, the finished hole size between 0.52mm to 0.73mm is acceptable.
Blind/Buried Vias Don’t support Currently we don't support Blind/Buried Vias, only make through holes.
Min. Via hole size 0.2mm For Single&Double Layer PCB, the minimum via hole size is 0.3mm;For Multi Layer PCB, the minimum via hole size is 0.2mm
Min. Via diameter 0.45mm For Single&Double Layer PCB, the minimum Via diameter is 0.6mm;For Multi Layer PCB, the minimum via diameter is 0.45mm.
DPTH hole Size 0.20mm - 6.35mm The annular ring size will be enlarged to 0.15mm in production.
Pad Size 0.70mm- 6.35mm The pad hole size will be enlarged 0.15mm in production.
Min. Non-plated holes 0.50mm The minimum NPTH dimension is 0.50mm, Please add the NPTH in the mechanical layer or keep out layer.
Min. Plated Slots 0.65mm The minimum plated slot width is 0.65mm, which is drawn with a pad.
Min. Non-Plated Slots 1.0mm The minimum Non-Plated Slot Width is 1.0mm, please draw the slot outline in the mechanical layer(GML or GKO)
Min. Castellated Holes 0.60mm The minimum diameter of castellated holes is 0.60mm.
Hole size Tolerance (Plated) +0.13mm/-0.08mm e.g. for the 1.00mm Plated hole, the finished hole size between 0.92mm to 1.13mm is acceptable.
Hole size Tolerance (Non-Plated) ±0.2mm e.g. for the 1.00mm Non-Plated hole, the finished hole size between 0.80mm to 1.20mm is acceptable.
Rectangle Hole/Slot Don’t support We don't make rectangle hole/slot,the rectangle hole/slot will be made as round or oval hole/slot by defalut.
Minimum annular ring PTH Patterns
1oz Copper 0.13mm 0.3mm
2oz Copper 0.2mm 0.3mm
Features Capability Patterns
Hole to hole clearance(Different nets) 0.54mm
Via to Via clearance(Same nets) 0.254mm
Pad to Pad clearance(Pad without hole, Different nets) 0.127mm
Pad to Pad clearance(Pad with hole, Different nets) 0.54mm
Via to Track 0.254mm
PTH to Track 0.33mm
NPTH to Track 0.254mm
Pad to Track 0.2mm
Copper weight Min. Trace width Min. Spacing Patterns
H/HOZ (Inner layer) 5mil (0.127mm) 5mil (0.127mm)
1oz (Outer layer) 1/2 layers: 5mil (0.127mm)
4/6 layers: 3.5mil(0.09mm)		 1/2 layers: 5mil (0.127mm)
4/6 layers: 3.5mil(0.09mm)
2oz (Outer layer) 8mil (0.2mm) 8mil (0.2mm)
Layer count Min. BGA Pad Dimensions Min. Distance Between BGA Patterns
1/2 layers 0.4 mm 0.127mm
4/6 layers 0.25 mm) 0.127mm
Features Capabilities Notes Patterns
Solder mask opening/ expansion 0.05mm The solder mask should have a minimum of a 0.05 mm "growth/mask opening" around the pad to allow for any mis-registration.
Solder bridge 0.2mm(green)
0.254mm(other colors)		 To have solder mask bridge, the spacing between copper pads edge must be 0.2mm (8mils) or more.
Solder mask color green, red, yellow, blue, white, and black. We use LPI (Liquid Photo Imageable) solder mask. It is the most common type of mask used today.
Solder mask dielectric constant 3.8
Solder mask thickness 10-15UM
Features Capabilities Notes Patterns
Minimum Line Width 6 mil (0.153mm) Characters width less than 6mil(0.153mm) will be unidentifiable.
Minimum text height 32 mil (0.8mm) Characters height less than 32mil(0.8mm) will be unidentifiable.
Character width to height ratio 1:6 The preferred ratio of width to height is 1:6.
Pad To Silkscreen 0.15mm The Minimum Distance Between Pad and Silkscreen is 0.15mm.
Features Capabilities Notes Patterns
Trace to Outline 0.2mm Ships as individual board(Rounting):Trace to Outline≥0.2mm
Trace to V-cut line 0.4mm Ship as panel with V-scoring: Trace to V-cut line≥0.4mm
Features Capabilities Notes Patterns
Panelization without space 0mm The space between boards is 0mm.
Panelization with space 2mm Make sure the space between boards should be ≥2mm,otherwise it will be hard to process for rounding.
Panelized Round board ≥20mmx20mm The single round board size should be≥20mmx20mm.
Panelize with stamp holes and add tooling strips on four board edges
Panelized castellated holes board Panelize with stamp holes and add tooling strips on four board edges The distance between castellated hole and board corner should be larger than 3mm.
Recommended diameter of stamp hole is 0.5mm-0.8mm;
Recommended distance between the two stamp holes is 0.2-0.3mm
Min. Width of Breakaway Tab 3mm The minimum width of breakaway tab is 3mm. For breakaway with mouse-bites, the minimum width is 5mm.
Min. Edge Rails 3mm If choosing panel by Vishal, we will add 5mm edge rails on both sides by default.