Posts Tagged ‘prepreg’

PP (prepreg) in PCB

Saturday, April 2nd, 2016

PP is prepreg that is to connect the inner layer and offer theĀ insulation

PP (prepreg)Ā  is a kind of base materials of Printed Circuits Board.

It is an un-curable resin with non-conductive, which using for connecting the inner layer and offer theĀ insulation.

Following is a 4 layers PCB stackup which including two pieces of 0.07 mm 1080 pp, there the 1080 pp is to connect top layer with 2 layer,and connect bottom layer with 3 layer, meanwhile pp is non-conductive.

4 layer PCB stackup

pp in 4 layersĀ  PCB stackup

It consists of glass fiber and resin. The resin is un-curable status, called- B-Stage.

Ā Basic Types of PP

Ā Glass fiber types: 1080ļ¼Œ2116ļ¼Œ7628; list the normal thickness FYI:1080 pp:3 mil; 2116 pp: 4.2 mil; 7628 pp:7 mil;

Resin types: Phenolic Resin, Epoxy Resin, Polyimide Resin ,PI, Bismaleimide Triazine, BT

PP is for FE4 PCB, so if you wound like to know more about other PCB, for example Ceramic PCB, MCPCB, meanwhile don’t hesitation to contact us if any question.

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