Therm-Tech

Concentrated Dissipation for Active vs. Distributed Dissipation for Passive In the world of electronics, components are divided into two main categories: Active and Passive . While both generate heat, their roles and the strategies required to cool them are fundamentally different. The Kitchen Analogy Imagine a busy restaurant kitchen: Active Components (CPU, Transistors): These are like the pots boiling on the stove . They are the primary source of heat where the "cooking" (data processing) happens. If not managed, the whole kitchen could catch fire. Passive Components (Resistors, Capacitors, Coils): These are like the kitchen lights and the staff . Individually, they don't seem very hot, but if dozens of lights are on and many people are working in a tight space, the ambient temperature rises, eventually affecting the food on the stove. Strategy 1. Active Components: Speed of Dissipation (Active Cooling) Active components use electrical energy to process or amplify s...

  In thermal design, we often talk about Temperature (℃) and Heat Energy (J). However, an expert looks at 'Energy Density' rather than just the temperature. Even with the same amount of heat energy, the temperature rises if it's concentrated in a small space and drops if it's spread out. In other words, temperature is simply a phenomenon that represents how concentrated or diluted energy is. Infinite Rise: What Happens When Energy is Trapped? Logically, if energy keeps flowing into a space and has no way to exit, the temperature should rise infinitely. But in reality, this never happens. Why? The True Meaning of 'Constant Temperature' Think about boiling water in a kettle. Energy is constantly supplied by the stove, yet the water temperature does not exceed 100℃. Why does the temperature stay constant? Because energy stops flowing in? Because the amount of energy entering equals the amount of energy exiting? The answer is number 2 . As steam evaporates and heat...

  Comparing Storage Temperatures: Food vs. Electronic Components Getting into a car parked under the blazing summer sun is a painful experience. Even with the windows open and the AC on full blast, the heat is overwhelming. Inside, temperatures can soar above 60°C, and the dashboard can reach a staggering 80°C. Have you ever wondered if the dashboard display or navigation system can survive such heat? Operating Temp vs. Storage Temp In product design, there are two critical temperature specs: Operating Temperature and Storage Temperature . Most people focus on the heat generated while the device is on, but the 'Storage Temperature'—the heat a device endures while turned off—is just as vital for quality. Storage temperature is much like the recommended storage temperature for food . Just as fresh produce spoils if left out in the heat, electronic components lose their "shelf life" (lifespan) if kept above certain temperatures. The Invisible Evaporation Inside Compone...

  Why Do Electronic Devices Generate Heat? (The Inevitable Law of Energy) When using a smartphone or laptop, we often feel the device getting warm. "It runs on electricity, so why does it produce heat?" Thermal design begins with this simple question. Inside an Electronic Device: The Pathway for Energy Unless you are an engineer who designs them, you rarely get a chance to see inside an electronic device. In simple terms, an electronic device is a "machine that uses electrical energy to perform a specific task." Here, "task" refers to playing music through speakers or displaying images on a screen. These complex tasks are performed by a combination of numerous components like resistors, capacitors, and ICs (Integrated Circuits). These parts are connected via copper traces (patterns) on a Printed Circuit Board (PCB). Much like cars traveling on a complex road network, electricity flows along these copper paths to transmit information and consume energy. Th...

  Are You Practicing 'Thermal Design' or Just 'Thermal Countermeasure'? When many engineers join a project for a new electronic product, they start with the exciting imagination of creating a device with "wonderful new features." The next steps are usually predictable: design the circuit to implement those ideas and build a prototype. Turn the power on. Once the device works, only then do they grab a thermometer and start measuring temperatures inside the device. If the temperature of a specific component goes over the limit and overheats, what do they do? Then, and only then, they rush to drill holes (vents) in the case, or try to squeeze a fan wherever there is empty space. Surprisingly, this is how many product development sites still operate. Have you ever seen a product at an electronics store with a fan in a bizarre spot that doesn't match the design at all, or vents in illogical places? Those are the traces of last-minute additions in development. T...

Is Heat Silently Killing Your Outdoor CCTV System?   Outdoor CCTV cameras are essential for modern security infrastructure — but many overlook a silent threat to their reliability and lifespan: heat . 🌞 Under the scorching sun , these devices often face surface temperatures of 60–70°C or higher. While they’re built to withstand dust and rain, many outdoor cameras lack the thermal design needed to handle sustained heat — especially during summer or in tropical climates. 🔥 Top Thermal Issues: Sensor Degradation CMOS/CCD sensors are sensitive to temperature. As heat rises, so does thermal noise, leading to poor image quality and focus drift. Internal Component Stress Heat accelerates capacitor aging and degrades PCBs and ICs, increasing failure rates and reducing lifespan. Enclosure Traps Heat IP66/IP67-rated housings protect from water and dust — but they can trap heat inside if not properly ventilated or thermally managed. IR LED Heat Cameras with night vision generate addit...

  Are Thermal Issues Affecting Robot Vacuum Cleaners As smart home adoption continues to grow, robot vacuum cleaners have become a staple in modern households. They’re compact, intelligent, and increasingly autonomous — but like any compact electronic system, they come with their own set of engineering challenges. One often overlooked issue is thermal management . While users may expect their robot vacuums to perform reliably for years, heat buildup can quietly degrade performance, shorten lifespan, or cause sudden malfunctions. Let's take a closer look. 🧠 Where Does the Heat Come From? Even in a compact robot vacuum, several internal components generate heat: 1. Motor Overheating Cause : Continuous operation, tangled hair in the brush, or blocked suction. Impact : Overworked motors may heat up rapidly, leading to thermal shutdown or mechanical failure over time. 2. Battery Temperature Rise Cause : Fast charging, deep discharging, or poor ventilation. ...