Auteur/autrice : wordpress51

4N35 Optocoupler: Working Principle, Specs, Circuit Design & PCBA Sourcing Guide

The 4N35 optocoupler remains a cornerstone in electronic manufacturing even in 2025. Despite newer digital isolators entering the market, this classic 6-pin DIP part anchors isolation circuits in industrial controls, power supplies, and motor drives. For procurement teams and design engineers alike, understanding its internal structure, operating modes, and critical specifications ensures reliable production outcomes. […]

PCB Tombstoning: Causes, Prevention & SMT Assembly Solutions

Precision defines success in electronics manufacturing. Even minor process imbalances can trigger significant defects during production. PCB tombstoning remains one of the most frequent issues in surface mount technology (SMT). This defect occurs when a component lifts on one end during solder reflow and stands vertically on the board. Engineers often call this the tombstone effect in […]

Conformal Coating: Protecting Electronics in Harsh Environments

Traditionally used in aerospace Conformal coating protects electronics against damage from moisture and oxidation, by applying a thin breathable layer to circuit boards. Explore our guide to learn all about how this helpful technique is used for protecting wearable tech to industrial robots. Understanding the Basics of Conformal Coating At its most basic level, a […]

Cold Solder Joint: Understanding and Prevention

A cold solder joint is a defect caused by improper melting of solder to bond PCB electronic components. This defect can impact the functionality of a PCB assembly, and so must be carefully avoided. Solder Joints on Circuit Board Introduction Soldering involves bonding two metals together using a solder alloy. Metal in the solder bonds […]

What Is In-Circuit Testing? An Essential Guide for Engineers

Discover the critical role of in-circuit testing in modern engineering, exploring its foundational principles, technological advancements, and real-world applications. Introduction In-circuit testing (ICT) is a critical process in electronic circuits’ manufacturing and quality assurance. It evaluates each component on a printed circuit board (PCB) for functionality and performance, identifying defects before final assembly. For engineers, ICT is […]

NMOS and PMOS Transistors: Fundamentals and Applications

In this article, we will delve into the structure and operation of NMOS and PMOS transistors, and discuss the applications and characteristics of these essential components in electronic circuits. Introduction MOS (Metal-Oxide-Semiconductor)-  NMOS (N-Channel MOS) and PMOS (P-Channel MOS) transistors play a crucial role in modern electronics. These transistors provide the basic building blocks for […]

Linear vs switching power supply: Understanding the Differences

Linear vs switching power supply,This article delves into the core concepts of the exploring their efficiency, noise levels, and other key factors, that help make the right choice for your projects! Linear vs switching power supply Introduction Power supplies, or PSUs, are essential components in electronic devices, converting raw AC power into usable DC voltage. […]

FPGA vs Microcontroller Understanding the Key Differences and Use Cases

FPGAs are reconfigurable hardware used for parallel, high-speed processing, while microcontrollers are fixed-architecture chips designed for sequential, control-oriented tasks. FPGAs offer flexibility and performance MCUs provide low power, ease of use, and cost-efficiency. Introduction Field-Programmable Gate Arrays (FPGAs) and microcontrollers (MCUs) are two foundational components in embedded systems and digital electronics. Both serve as  tiny […]