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The fire rating of the printed circuit board refers to the fire rating of the board. Printed circuit boards are usually made of glass fiber material with a fire rating of FR-4. This material has a high fire rating and can prevent fires to a certain extent. Of course, according to factors such as application requirements and safety requirements, the fire rating of printed circuit boards can also adopt other different materials and standards.The specific standard of UL94v0 is that the circuit board has reached the fire retardant standard. ul94 equipment and appliance components burning test of plastic materials, with standard name, scope of application, grade classification, related standards, etc. UL94 Plastic material combustion test - Classification:1) HB level: Horizontal Burning Test2) V0-V2 level: Vertical Burning Test Vertical burning testThe flame retardant grade of plastics increases from HB, V-2, V-1 to V-0 step by step:UL 94 (Flammability test for plastic materials)HB: The lowest flame retardant grade in UL94 standard. For samples 3 to 13 mm thick, burn at a rate of less than 40 mm per minute and for samples 3 mm thick, burn at a rate of less than 70 mm per minute or extinguish before the 100 mm mark.V-2: Flame extinguished within 30 seconds after two 10-second combustion tests of the sample. It can ignite 30cm cotton.V-1: Flame extinguished within 30 seconds after two 10-second combustion tests of the sample. Do not ignite 30cm cotton.V-0: The flame is extinguished within 10 seconds after two 10-second combustion tests on the sampleAccording to the grade level from the bottom to the high division as follows: 94HB/94VO/22F/ CIM-1 / CIM-3 /FR-4, flame retardant characteristics of the grade division can be divided into 94V-0 /V-1 /V-2, 94-HB four kinds; 94HB: ordinary board, no fire (the lowest grade material, die punching, can not do power board) 94V0: flame retardant board (die punching) 22F: single-side half glass fiber board (die punching) CIM-1: single-side glass fiber board (must be computer drilling, can not die punching) CIM-3: Double sided half glass fiber board FR-4: double sided glass fiber boardParticular emphasis is all the boards of Shenzhen Lianchuang Electronics Co.,Ltd, fire rating meet 94v-0!Halogen-free boards for printed circuit boards refer to halogen-free materials used in the manufacture of printed circuit boards. Halogen-free materials refer to materials that do not contain halogen elements such as chlorine and bromine. This material is more environmentally friendly and safer than traditional halogen-containing materials, and can reduce the harm to the environment and human body. In some countries and regions, the use of halogen-free materials to manufacture printed circuit boards has become a legal requirement or industry standard to promote sustainable development and environmental protection.
