M550B128M040AT

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The M550B128M040AT is an example of one of the many die-cut, miniature polymer tantalum solid electrolyte capacitors that are currently being used in many applications across many industries. This specific part is a 0.4 F chip capacitor, which is used for high-capacity power filtering in a wide variety of devices ranging from gaming consoles to smartphones. It\'s rated for -55°C to +125°C and has very low ESR and ESL values on DC bias. It also has a good rate of change of capacitance for temperature, making it a good choice for capacitor value stability over temperature changes.

Tantalum - Polymer Capacitors are a specific type of capacitor which, as the name implies, uses tantalum and polymer films to store electrical charge. They represent the latest developments in capacitor technology and are quickly replacing electrolytic capacitors as the silver standard in the electronics industry, due to the advantages they provide. Some key advantages of Tantalum - Polymer Capacitors that make them stand out among other capacitors include:

• High volumetric efficiency. Tantalum - Polymer Capacitors provide a very high amount of storage capacity in a given volume, making them great for maximising the space efficiency and signal quality of electronic components.
• High capacitance and temperature stability. As mentioned above, the M550B128M040AT provides a good rate of change of capacitance for temperature, making it a great choice for capacitor value stability over temperature changes.
• Low ESR and ESL. The M550B128M040AT is rated for -55°C to +125°C and has very low ESR and ESL values on DC bias which means it is great for high-current applications.
• Long lifetime. Unlike standard aluminum electrolytes and electrolytic capacitors, Tantalum - Polymer Capacitors can last up to 10 times longer and provide many years of service. This makes them ideal for data center and server applications.
• Low cost. Tantalum - Polymer Capacitors are relatively inexpensive compared to other types of capacitors and are becoming ever more popular with engineers due to their high performance and reliability.

The working principle of the M550B128M040AT is quite simple – when the voltage applied across the terminals of the capacitor reaches a certain level (known as the breakdown voltage), an electric current will flow through the capacitor, causing electrons to build up on one side of the capacitor and create a current, which creates a voltage drop across the capacitor. This charge also causes the capacitance to increase, which in turn helps keep the current flowing across the capacitor. If the voltage exceeds the breakdown voltage, the charge is released and the capacitance decreases again. This process of charging and discharging is what is known as the \'working\' principle of the capacitor.

In summary, the M550B128M040AT – along with other tantalum - polymer capacitors – has become a staple in the engineering industry due to its excellent performance, high volumetric efficiency, long lifespan and relatively low cost compared to other types of capacitors. Its working principle is quite straightforward, and its excellent temperature stability, low ESR and ESL values on DC bias make it a great choice for high-capacity power filtering in many different applications.

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