Min. drill size is 0.20mm. Max. drill size is 6.30mm.

e.g. for the 0.6mm hole size, the finished hole size between 0.52mm to 0.73mm is acceptable.

Currently we don’t support Blind/Buried Vias, only make through holes.

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

For Single&Double Layer PCB, the minimum Via diameter is 0.5mm; For Multi Layer PCB, the minimum via diameter is 0.45mm(Limitation 0.4mm).

The annular ring size will be enlarged to 0.15mm in production.

The pad size will be enlarged by 0.5mm than the hole size. The minimum size of annular ring around plated through hole pads is 0.25mm. If the recommended sizes are not respected then the pad will not be produced properly.

The minimum NPTH dimension is 0.50mm, Please add the NPTH in the mechanical layer or keep out layer.

We make NPTH via dry sealing film process, if customer would like a NPTH but around with pad/copper, our engineer will dig out around pad/copper about 0.2mm-0.25mm, otherwise the metal potion will be flowed into the hole and it becomes a PTH. (there will be no copper dig out optimization for single board).

The minimum plated slot width is 0.5mm, which is drawn with a pad.

The minimum Non-Plated Slot Width is 1.0mm, please draw the slot outline in the mechanical layer(GML or GKO)

The minimum diameter of castellated holes is 0.60mm.

e.g. for the 1.00mm Plated hole, the finished hole size between 0.92mm to 1.13mm is acceptable.

e.g. for the 1.00mm Non-Plated hole, the finished hole size between 0.80mm to 1.20mm is acceptable.

Rectangle/Square Slots, we don’t make rectangular or square plated holes,only make oval or round plated slots. For non-plated slots, rounded corner-rectangular or square slots are supported. The recommended minimum size is 3x3mm.

0.3mm

0.3mm

The solder mask should have a minimum of a 0.05 mm “growth/mask opening” around the pad to allow for any mis-registration.

To have solder mask bridge, the spacing between copper pads edge must be 0.2mm (8mils) or more.

We use LPI (Liquid Photo Imageable) solder mask. It is the most common type of mask used today.

Characters width less than 6mil(0.153mm) will be unidentifiable.

Characters height less than 40 mil(1.0mm) will be unidentifiable.

The preferred ratio of width to height is 1:6.

The preferred ratio of width to height is 1:6

The Minimum Distance Between Pad and Silkscreen is 0.15mm.

Ships as individual board(Rounting):Trace to Outline≥0.2mm

Ship as panel with V-scoring: Trace to V-cut line≥0.4mm

The space between boards is 0mm.

Make sure the space between boards should be ≥2mm,otherwise it will be hard to process for rounding.

The single round board size should be≥20mmx20mm. Panelize with stamp holes and add tooling strips on four board edges

The distance between castellated hole and board corner should be larger than 2mm. Recommended diameter of stamp hole is 0.5mm-0.8mm; Recommended distance between the two stamp holes is 0.2-0.3mm

The minimum width of breakaway tab is 4mm. For breakaway with mouse-bites, the minimum width is 5mm.

If choosing panel by PCB, we will add 5mm edge rails on both sides by default.