various base plates of pcb board
date：2019-01-11 10:30:00
Various base plates of pcb board
Detailed description of the characteristics of various base plates of pcb board
Printed circuit board (PCB) is an important mechanical component of electrical or electronic equipment made of copper-clad Laminate (CCL). It is widely used. The common base plates are divided into: 94HB, fireproof. Plate (94VO, FR-1, FR-2), semi-glass (22F, CEM-1, CEM-3), full glass (FR-4). The following describes the characteristics of various base plates:
FR-1 pcb board:1. Halogen-free sheet, good for environmental protection; 2. High resistance to tracking index (more than 600 volts, special requirements are required); 3. Suitable punching temperature is 40-70 ° C; 4. Bow The curvature and distortion rate are small and stable.
FR-2 pcb board: Excellent leakage resistance (600V or more) 5. Low cost and wide application range; 6. Excellent moisture and heat resistance; 7. Suitable punching temperature is 40~70°C; 8. Bow curvature, distortion The rate is small and stable; 9. Excellent dimensional stability.
CEM-3 pcb board: Excellent machinability and punchability. 1. Electrical performance is equivalent to FR-4, the processing technology is the same as FR-4, the wear rate of the drill is smaller than FR-4; 2. The multi-level leakage resistance (CTI 175V, CTI300V, CTI 600V); Specification requirements for IPC-4101A.
FR-4 pcb board: Halogen-free, bromine and chlorine content less than 0.09% (Halogen-free, Br/Cl content below 0.09%). 1. Antimony and red phosphor free, Absence of highly toxic dioxins in combustion exhaust gas; 2. Sheet is harder than KB-6160 (Harder than KB- 6160).
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