YXD PCB

  A  PCB  surface finish  is an  intermetallic   joint   between   the   bare   copper   of   the   solderable   area   of   the   PCB   and   the   components . Printed Circuit boards have a base copper surface that is susceptible to oxidation if left without a protective coating, which is just like a man’s clothes. A PCB designer needs to be decide what type of PCB surface finish to use. Just as the main function of clothes is to protect you from your environment (different conditions, different clothes), PCB surface finishes are intended to protect your board from external harm. Without this protection, your board may fall prey to oxidation or contamination.   Types of PCB Surface Finishes · Hot Air Solder Level (HASL) · Lead-Free HASL · Organic Soldera...

What is the function of peelable solder mask?   Peelable solder mask is a kind of silk screen protective ink, which is a temporary coating. It is used as local solder resistance during the assembly of printed circuit board or electronic parts. It provides protection for specific parts on the circuit board during electroplating and tin plating. When the specified electroplating or tin plating process is completed, it can be easily stripped off from the board without leaving traces and stains on the plated through holes or surfaces. It is easy to be peeled off without residue.       1.  peelable solder mask  refers to the process of printing a layer of  peelable solder mask  on some parts of PCB  by screen printing or aluminum screen printing, which plays the role of protection and solder resistance after curing.       2. Safety clearance   The distance between the peelable solder mask position and the tin pa...

  What is a flexible printed circuit board ？   Speaking of circuit boards, everyone may not be unfamiliar. Almost all electronic products in our lives need printed circuit boards. However, there are many types of circuit boards. So what is a flexible PCB?     Introduction of the flexible circuit board Flexible PCB is also known as the flexible printed circuit board, flexible printed circuit, or flexible circuit board. We call it this name because it allows the circuit to be flexibly designed to fit electronic devices or products rather than just being constructed on the circuit board.   Simply put, the flexible PCB is composed of multiple printed circuits and components located on the flex circuit board. These flexible circuit boards use the same component design as rigid PCBs. However, the only difference is that the flexible PCB board is made so that it can be bent into the required shape during application.   Advanced Features  of Felexible PCB ...

  Double Sided PCB, custom made Printed Circuit Boards Assembly Place of Origin: Guangdong, China Base Material:FR4, FR4 Copper Thickness:1.5oz, 0.5OZ ; 1.0OZ; 1.5OZ;2OZ Board Thickness:1.6mm, 0.6MM;0.8MM;1.0MM;1.6MM Min. Hole Size:0.25mm, 1.6mm Min. Line Width:0.2mm, 0.2mm Min. Line Spacing:0.2mm, 0.2mm Surface Finishing:OSP ENIG, OSP/ ENIG Inner packing:Vacuum packing,Plastic bag color:white black green red blue yellow Supply Ability:800000 Piece/Pieces per Month Port: Shenzhen Images   Min Trace Width (a) 0.075mm (3mil) Min Space Width (b) 0.1mm (4 mil) Min Annular Ring 0.1mm (4 mil) SMD Pitch (a) 0.2 mm(8 mil) BGA Pitch (b) 0.2 mm (8 mil) Solder Mask   Min Solder Mask Dam (a) 0.0635 mm (2.5mil) Solder mask Clearance (b) 0.1mm (4 mil) Min SMT Pad spacing (c) 0.1mm (4 mil) Solder Mask Thickness 0.0007"(0.018mm) Holes   Min Hole size (CNC) 0.2 mm (8 mil) Min Punch Hole Size 0.9 mm (35 mil) Hole Size Tol (+/-) PTH:±0.075mm;NPTH: ±0.05mm Hole Position Tol ±0.075m...