What are the requirements for the stencil design of the PCBA factory?

- Jan 10, 2019-

Screen manufacturing methods and features:

At present, the manufacturing methods of steel mesh mainly include laser cutting, chemical etching and electroforming.

1) Laser cutting

Laser cutting is still the main manufacturing method at present, and its characteristics are as follows:

(1) The surface of the hole wall is rough, and the transfer rate of the solder paste is 70%~75%;

(2) The area ratio of the stencil opening and the side wall suitable for solder paste transfer is greater than or equal to 0.66.

2) Electroforming

(1) The surface of the hole wall is smooth and trapezoidal, and the transfer rate of the solder paste is high, up to 85% or more;

(2) It can be used in the case where the area ratio of the stencil opening and the side wall is less than 0.66 and greater than 0.5.


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