What is HDI PCB?
High-density interconnects (HDI) are PCBs with a greater number of interconnects and a minimal footprint. This leads to miniaturization of the circuit board. The components are placed closer together, and the board space is significantly reduced, but the function is not affected.
More precisely, a PCB with an average of 120 to 160 pins per square inch is considered an HDI PCB. HDI design combines dense component placement and veratile routing. The HDI popularized microvias technology. Through the implementation of microvias, buried vias and blind vias to make more dense circuits. The microvias, buried vias and blind vias of HDI PCB all need to be produced by laser drilling machine. The precision of the laser drilling machine determines the quality and precision of the vias produced. JHDPCB has 60 sets of Japan’s Mitsubishi laser drilling machines, through the start of Synchrom technology, to achieve high-capacity processing. The minimum aperture of laser holes can reach 0.06mm.
What are the advantages of HDI PCBs?
- Compact design
The combination of microvias, blind vias, and buried vias greatly reduces board space. With the support of HDI technology, it is possible to achieve twice the functionality of a standard PCB in the same size. Thereby reducing the PCB size to accommodate more applications.
- Excellent signal integrity
HDI utilizes via-in-pad and blind via technologies, which help bring components close to each other, reducing signal path lengths. HDI By using small vias, all stray capacitances and inductances are reduced. At the same time, the via stubs are removed, thus reducing the reflection of the signal, thereby improving the signal quality. These will result in faster signal transmission and better signal quality. JHDPCB adopts high-precision back-drilling technology to reduce the equivalent series inductance of vias and meet the integrity requirements of product signal transmission.
- High reliability
The implementation of stacked vias used by HDI technology enables these boards to withstand extreme environmental conditions. Provides better durability and reliability for PCBs in hazardous conditions and extreme environments.
- High cost performance
If the traditional pressing process is used, when the board layer exceeds 8 layers, more manufacturing costs are required. But HDI technology can reduce the functionality of a standard 8-layer PCB to a 6-layer HDI board (or even less) without compromising quality. Maintain the desired functionality while reducing cost. JHDPCB can mass produce 4-12 layers, 3-level HDI, and the price is very cost-effective.
Ultimate Guide To PCB Schematics
Standard Specification For PCB Schematics.
Schematic notation is regulated globally using two standards:
IEC60617: The International Electrotechnical Commission (IEC) has published this standard. It is based on the older standard British Standard (BS3939). The database contains more than 1750 schematic symbols.
ANSI Standard Y32: American National Standards Institute (ANSI). This provides a variety of specialized notations initially used in aircraft applications. A series of minor changes to the standard brought existing documents into line with the IEC.
What Is The Importance Of A PCB Schematic Diagram?
A circuit board schematic diagram could be a consistent visual representation of a circuit. The schematic graph is one of the essential angles of PCB design. An exemplary circuit board schematic can depict the connections between various electronic components. This can be the primary step in a gadget’s plan. Prior, designers drew circuit charts on paper. They have begun utilizing PCB plan apparatuses that streamline the plan preparation.
Circuit Board Schematic Diagram Symbol.
What symbolic elements are included in a pcb schematic?
Circuit symbols of electronic components are symbols or drawings of electronic components or symbols or pictograms used to represent draw schematic diagrams of electrical and electronic components and equipment of electronic circuits. Although these symbols may vary in different countries/regions, IEC and ANSI have developed some common standards for representing electronic components. These electrical and electronic circuit symbols explain how circuits are connected.