Electrical Performance

Fujian WoChong IoT Technology Co., Ltd. is the Manufacturer of the WoChong WL5000 Charging Pile

by
Fujian WoChong IoT Technology Co., Ltd. is the Manufacturer of the WoChong WL5000 Charging Pile

Fujian WoChong IoT Technology Co., Ltd. is the manufacturer of the WoChong WL5000 charging pile. Some electrical performance indicators of the WoChong WL5000 charging pile are as follows: – Short Circuit Protection: According to the “Technical Specifications for Centralized Charging Facilities for Electric Bicycles” (GB/T 42236.1-2022), the short circuit protection response time should be ≤150 … Read more

Causes and Solutions for Uncured Ink in PCB Manufacturing

by
Causes and Solutions for Uncured Ink in PCB Manufacturing

In PCB manufacturing, the correct application and curing of ink play an indispensable role in protecting circuits, identifying component positions, and enhancing product aesthetics. However, during actual production, various factors may lead to uncured ink, which not only affects the appearance quality of the PCB but may also pose serious electrical hazards for subsequent assembly … Read more

Does UV Coating Affect Circuits After PCBA Completion?

by
Does UV Coating Affect Circuits After PCBA Completion?

Typically, UV coating on PCB boards does not negatively impact the circuits, but the following considerations should be noted: Impact on Electrical Performance The heat generated during the curing process of UV adhesive is relatively low and generally does not cause overheating damage to the circuits. Its chemical composition is compatible with PCB materials (such … Read more

Understanding ICD Issues in PCB Manufacturing

by
Understanding ICD Issues in PCB Manufacturing

Click the above “Mechanical and Electronic Engineering Technology” to follow us In the vast world of the electronics manufacturing industry, PCB (Printed Circuit Board) is undoubtedly the shining star. It is not only an indispensable component in electronic devices but also the bridge connecting various electronic components. However, during the production process of PCBs, engineers … Read more

I2C Basics (Part 2) Electrical Performance

by
I2C Basics (Part 2) Electrical Performance

—–This articleIntroduction—– Main content includes: Previous article:I2C Basics (Part 1) — Overview and Data Transmission This article focuses on: Electrical performance parameters and pull-up resistor calculation Reference: Official documentation and Chinese translation, reply in the background: I2C Follow the WeChat public account:Hardware Learning Notes Reply:Fan Group, to receive materials —– 正文 —– First like↓ then … Read more

Rigid Board – Metal Core Multilayer Printed Circuit Boards

by
Rigid Board - Metal Core Multilayer Printed Circuit Boards

Metal core multilayer printed circuit boards, as the name suggests, are multilayer boards with an embedded0.1mm~1.5mm thick metal core (such as Cu,Al,Cu-Invar-Cu etc.), widely used inLED lighting, high-performance computing, automotive electronics, and other fields. Metal core multilayer boards have the following specific functions: l High Power Heat Dissipation The core components of ordinary printed circuit … Read more

Comprehensive Guide to Transformer Testing Instruments: Accurate Diagnosis to Ensure Power Equipment Safety

by
Comprehensive Guide to Transformer Testing Instruments: Accurate Diagnosis to Ensure Power Equipment Safety

Transformer testing requires the use of various specialized instruments to assess electrical performance, insulation status, oil quality, and more. Below are common categories of transformer testing instruments and their functions:1. Transformer Turns Ratio TesterFunction: Measures winding turns ratio, polarity, and connection groupUsage: Checks for inter-turn short circuits and poor contact in tap changers2. Transformer DC … Read more

The Serious Consequences of Flux and PCBA Compatibility Issues

by
The Serious Consequences of Flux and PCBA Compatibility Issues

A certain audio product’s PCBA (wave soldering process) experienced burning during use. The failure rate was high when using Flux A, slightly decreased after cleaning, and dropped to zero after switching to Flux B. This article will explore the failure reasons through a series of professional testing and analysis methods. 1. Visual Analysis From visual … Read more

Technical Evolution and Application Analysis of Copper Damascene Process in the Semiconductor Field

by
Technical Evolution and Application Analysis of Copper Damascene Process in the Semiconductor Field

1. Technical Background and Evolutionary Drivers In semiconductor manufacturing, interconnect technology is a key factor determining chip performance. Early aluminum interconnects could not meet the requirements for processes below 0.18 microns due to high resistivity (2.82 μΩ·cm) and electromigration issues. Copper, with its lower resistivity (1.68 μΩ·cm) and significantly stronger resistance to electromigration (over 10 … Read more

The Unsung Heroes Behind Circuit Boards: Exploring the Multidimensional Value of Solder Mask Design

by
The Unsung Heroes Behind Circuit Boards: Exploring the Multidimensional Value of Solder Mask Design

In the wave of precision and miniaturization of modern electronic devices, printed circuit boards (PCBs) serve as the core carriers of electronic systems, and their performance directly affects the success or failure of products. Solder mask design, as a key part of PCB design and manufacturing, acts like an “invisible guardian” hidden beneath the circuits. … Read more