UL94 is a material flammability safety standard developed by Underwriters Laboratories (UL) in the United States, which is mainly used to evaluate the flame retardant properties of plastic materials.UL 94 test is a key safety indicator to ensure that PCBs will not burn quickly, drip, or spread the fire when exposed to high temperatures or accidental fires.
The CTI grade (Comparative Tracking Index) in PCB is an indicator to measure the material surface’s ability to resist tracking under the combined effects of electric field and moisture, which directly affects the insulation safety and long-term reliability of the circuit board.
ENIG (electroless nickel immersion gold) and ENEPIG (electroless nickel immersion gold over palladium immersion gold) are two common PCB surface treatment technologies, which have significant differences in structure, performance, application and cost.
ENIG (Electroless Nickel Immersion Gold) and Hard Gold are two common PCB surface treatment processes, which have significant differences in principles, characteristics and application.
FPC itself is thin and flexible, but in some electronic product applications, it requires higher rigidity and support function, so FPC Stiffener is needed to meet it. Stiffener refers to a process of adding rigid materials to specific areas of the flexible printed circuit board (FPC) to improve its mechanical strength and stability.
PCBA:PCBA also called”printed circuit board assembly”,It is a key process in electronic manufacturing, focusing on installing electronic components on printed circuit boards (PCBs).
ECM:ECM also called”Electronic Contract manufacturing”,It refers to a business model in which a company (contract manufacturer) manufactures electronic products according to the requirements of another company (brand owner or client) based on a contract signed by both parties, using the design, technical specifications, and sometimes specified raw materials and parts provided by the client.
PTFE PCB (PTFE printed circuit board) is a special circuit board with polytetrafluoroethylene (PTFE, commonly known as Teflon) as the substrate material, designed for high-frequency, high-speed and high-reliability pcb applications.
PCB copper oxidation refers to the process in which the copper layer (etching circuit, pads, etc.) on the printed circuit board (PCB) reacts chemically with oxygen, moisture or other environmental factors to form compounds such as copper oxide (CuO or Cu₂O) or copper sulfide (CuS). This phenomenon directly affects the PCB electrical performance and welding reliability , and is an issue that requires special attention when manufacturing, storing and using PCBs.
Rogers 3000 Series is a series of high-frequency laminate materials produced by Rogers Corporation. It is a PTFE (polytetrafluoroethylene) composite material containing special ceramic filled . It has first-class electrical and mechanical stability and is mainly used in commercial microwave and RF applications.
RT/duroid 5880 is a high-frequency laminate launched by Rogers Corporation. It is a micro-glass fiber reinforced PTFE (polytetrafluoroethylene) composite material. The randomly oriented microfibers reinforcement inside makes the PTFE composite material have exceptional Dk (dielectric constant) consistency.
When it comes to RO4000 PCB Material,RO4350B and RO4003C,These two hydrocarbon ceramic laminates materials are the most widely used by the high frequency PCB designer.RO4350B and RO4003C both are a series of high-frequency materials produced by Rogers Corporation.It is composed of ceramic-filled thermosetting materials and is designed for high precision circuit boards. The operating frequency can reach millimeter waves. Its low loss and high stability characteristics are widely used in microwave and millimeter wave circuit design.
370HR is a high performance 180°C Tg FR-4 multifunctional epoxy resin composite material, belonging to isola(UL File Number: E41625).370HR is used in thousands of PCB designs and contributed to Computing, Storage & Peripherals,Consumer electronics,Networking&Communications,Aerospace&Defence,Medical,industrial&instrumentation and Automotive &Transportation market.It complies with IPC-4101/98/99/101/126 standard and RoHS Compliant.
PCB (printed circuit board) Surface finish also called surface treatment,is a series of processing processes performed on the surface of the circuit board during the manufacturing process. The purpose is to protect the copper foil on the surface of the circuit board, enhance solderability, corrosion resistance, and provide good electrical performance.
Some of the most common surface finishes include HASL (hot air solder leveling), ENIG (electroless nickel immersion gold), OSP (organic solderability preservatives), Immersion Tin and Immersion Silver,ENEPIG(Electroplated Nickel Palladium Gold).
PCB is a bared material board that uses printing technology to make circuit wiring, conductive patterns such as pads, and mounting holes for electronic components on an insulating substrate. It is a board with pre-designed circuito bard. These boards are usually made of copper foil and etched on the surface of insulating materials (such as fiberglass, paper, Aluminum,Glass,ceramics etc.) to form electrical connection paths between electronic components.