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Last updated: October 16, 2026 The short definition is easy to find and does not help much on its own: a TVS diode is a component that conducts when the voltage across it becomes too high. The useful knowledge is knowing where “too high” sits relative to your circuit, and recognising the situations where a … Read more
You feel a spark when it reaches a few thousand volts, but a semiconductor can be destroyed by a discharge you never notice — and often is. The interesting part of static damage is not the spark; it is the fact that a device can pass a functional test after the event and fail in … Read more
Transistors are semiconductor devices that control current and can provide switching or amplification. In signal circuits they shape, amplify or buffer an electrical signal. In power circuits they control energy delivered to a load. Choosing a transistor starts with its job in the circuit, then its voltage, current, drive, bandwidth and thermal requirements. Last updated: … Read more
A power MOSFET is a transistor used to switch or control electrical power with a gate voltage. In a switching power supply it helps convert energy efficiently; in a photovoltaic inverter it helps synthesize AC from a DC source; in automotive electronics it can switch loads or protect a supply path. Selecting one requires the … Read more
A power rectifier converts alternating current into current that flows in one direction, using diodes or controlled semiconductor switches. Its basic output is pulsating DC. Filtering reduces the ripple, while a regulator or controlled converter may be needed to maintain a specified voltage. Rectification alone does not produce perfectly smooth, regulated power. Last updated: October … Read more
A catalogue tells you what exists; it does not tell you which family you need, which is the question beginners actually have. So this is a map rather than a list: each family is described by the job it does, the device it hides inside, and the mistake people make when choosing it. At the … Read more
Search the short name and you will get a wall of datasheet archives, a distributor page and a social post before you get anything that looks like a company. That happens because the short form is what fits in a catalogue column, so it ends up attached to thousands of auto-generated pages. This article gives … Read more
Most explanations assume you already know what a discrete device is, which is why they are hard to read if you do not. This one starts from zero: what the words mean, what the company produces, where those parts end up, and how to tell whether a claim about a component is worth trusting. Last … Read more
If you searched the name and landed on a stock chart, a forum argument or a datasheet site you have never heard of, you did not search badly. Component brands live in an odd corner of the internet: the products are invisible, the customers are factories, and most pages that mention the name were not … Read more
A solar garden light contains five things: a small solar panel, a diode, a rechargeable cell, a circuit that raises the cell voltage to what a light-emitting diode needs, and a light sensor that decides when to switch on. The energy is collected during the day, stored in a cell about the size of a … Read more
A modern power adapter does not simply step the mains voltage down; it chops it, transfers it across a small transformer and rebuilds it on the other side. That is why the box is small, why it works on different mains voltages, and why it can hold a steady 5 V while the socket voltage … Read more
An LED bulb makes light by passing current through a semiconductor junction, which converts some of the electrical energy directly into photons instead of heating a filament until it glows. That is the reason it uses far less power for the same light and why it runs cooler than the bulb it replaced. But the … Read more
Send the topology, current and voltage class. Good-Ark sales and application engineering will confirm the closest device, package and qualification status.