BON MARK Co.,Ltd
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Metal stencil
Electro-forming stencil For SMT use
Electro-forming stencil Stencil for Chip On Board(C.O.B)
Lasar-cut stencil
Lasar-cut stencil For SMT use
Lasar-cut stencil NEO Laser-cut stencil
Chemical etching stencil
Chemical etching stencil For SMT use
Chemical etching stencil For Divice parts
Chemical etching stencil For step-down or step-up stencil
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New Technology of BON MARK

At the beginning, started by producing Etching Stencils, now our stencil technology has so upgraded that we can supply the stencil for forming bumps on wafer(wafer-level CSP). This requires our factory with more strict quality controls and made it possible for us to produce the stencil accurately [stencil with smaller aperture(such as U30um) and with thickness (15um ) ]
Considering the technology trends of packaging, the terminals will become finer in their pitch and increase their numbers in the limited area, resulted from which LSI will be smaller and smaller with terminal pins increased. BON MARK are pleased to propose to the customers, stencil available for 0402 [mm] chip ( by inch: 01005), 0.15mm, 0.10mm pitch pad in wafer-level CSP.


Ultra Thin Stencil

For the better pastefs release performance, inside-aperture wallfs surface form has been improved.

Capable for ultra thin foil thickness, and even for ultra fine aperture diameter.
And we can also offer special type stencil by combination with other technology.
For the details,
Please inquiry to our sales staff first.

For forming bumps 100m
For very small bump 30m

Bump printing results