PCB Knowledge

Introduction In LHD TECH’s delivery record, over 82% of after-sales quality disputes stem not from the materials themselves, but from a mismatch between the selected base material and actual operating conditions. Therefore, we never recommend FR-4 or CEM

Introduction Every circuit in electronics is design to accomplish the same task: process, store, and transfer signal. But, how signal are manage and interpret defines the two great foundation of electronics — analog circuits and digital circuits. Understand th

Introduction to Amplifier Circuit Diagrams Studying, building, or troubleshooting electronic circuits is impossible to understanding the amplifier circuit diagram. From boosting tiny signals in microphones to driving room-shaking speakers in a power amplifier,

Introduction to PCB OSP Surface Finish In PCB manufacturing, protecting the exposed copper surface is crucial as it directly affects assembly yield, product reliability, and cost control. Organic solderability protectant (OSP), as a transparent, economical, an

Introduction: Alumina, Conductive or Insulator? When we consider a high-performance materials on thermal management or electrical insulation, alumina consistently in industrial applications is the top. Is  alumina conductive? Knowing its conductivity helps pro

Introduction to PCB Manufacturer Industry in the USA LHD TECH has always believed that printed circuit boards (PCBS) are the heart of all modern electronic products – from small consumer electronics carried around to large-scale equipment with extremely