PCB manufacturer China tells What are the inspections for PCB boards before shipment
In addition to the complicated process of producing PCB, there are many inspections to be done before shipment. What are the specific inspections? Today, PCB manufacturer China will give you a list:
1. PCB manufacturer China inspection standards:
a. Standards formulated by each country;
b. The military standards of each country;
c. Industrial standards such as SJ/T10309;
d. PCB inspection operation instructions formulated by the equipment supplier;
e. Technical requirements marked on PCB design drawings.
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2. Basic inspection
Sheet information: type, finished plate thickness, outer copper foil, inner copper foil, warpage, ink, color, position, marking, minimum line width, line spacing, ring width, solder mask, surface treatment, special process , Test items, film, etc.
3. Electrical performance test report
* Test category: single-sided, general-purpose, special-purpose, test points.
* Test parameters: current, voltage, on-resistance, insulation voltage, etc.
4. Metallographic section analysis report
Copper thickness, nickel thickness, gold thickness, lead tin thickness, circuit copper thickness, roughness, etching factor, plating cracks, resin shrinkage, plating voids, delamination, etc.
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