High frequency PCB Manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

PCB Manufacturing from Copy

PCB manufacturing from copy, also known as PCB cloning or reverse engineering manufacturing, refers to the process of reproducing a functional printed circuit board by extracting design data from an existing PCB sample. This technology is widely used in scenarios where original design documents are

Mar 04, 2026 1

Detail

Hidden Hardware Pitfalls That Make Programs Run Away: Crystal, Reset, and Boot Configuration Demystified

**Many people are frustrated: The code is fine, the power supply is fine, interference has been dealt with, but the program still runs away! This article discusses: Program runaway caused by hidden hardware faults.****1) Crystal Oscillator Issues: Clock becomes unstable, program goes haywire**All ac

Mar 03, 2026 1

Detail

PCB Test Pins

PCB Test Pins are specialized electrical connectors designed to facilitate the testing and validation of printed circuit boards (PCBs) during manufacturing, assembly, and quality control processes. These pins serve as temporary, high-precision contact points that establish electrical connections bet

Mar 02, 2026 1

Detail

JLC PCB Technology Class: Learn to Understand PCB Manufacturing Processes!

Common PCB Working Layers: - **Routing Layer**: Located on the top layer, bottom layer, and inner layers of multi-layer boards. Used to draw copper traces that carry current, such as pads, traces, and copper pours. - **Silkscreen Layer**: Also known as the legend layer. Used to mark component anno

Mar 02, 2026 1

Detail

Low Output Voltage in Power Modules

**Series 1: A Systematic Framework for Troubleshooting Low Output Voltage in Power Modules**In electronic devices, industrial control motherboards, communication equipment, automotive electronics, and consumer products, low output voltage in power modules is a highly prevalent failure with a wide im

Feb 28, 2026 1

Detail

Detailed Q&A on Inner Layer Browning/Black Oxide Defects in PCBs

**Q1: What is browning used for? What's its relationship with bubbles?****A:** Browning is used to create a micro-roughness + passivation on the inner layer copper surface, allowing the prepreg (PP) resin to firmly "grip" the board. Poor roughening → Poor wettability → Resin cannot spread → Air cann

Feb 27, 2026 1