---
# System prepended metadata

title: '`ee-capacitor` Capacitor'
tags: [ee-part, ' ee-capacitor']

---

---
name: ee-capacitor
tags: ee-part, ee-capacitor
---

# `ee-capacitor` Capacitor

## properties
- "aluminum capacitors have about a 15-year life. However, if they are in a warmer environment such as in a TV camera, electrolytic capacitors can fail within 5 years."

![](https://i.imgur.com/xZkZ3Wd.png)


## multiple bypass capacitors
{%youtube BcJ6UdDx1vg %}
- https://www.eevblog.com/forum/blog/eevblog-859-bypass-capacitor-tutorial/?all
- `09:00` fast-rising signal has high-frequency components (Fourier)
- `16:10` large C is there, but can't deliver its stored energy at high frequencies
- `16:36` smaller package (form factor) for C -> lower ESL (less undesirable inductance)
![](https://i.imgur.com/kx3cZGf.png =x200)
- `28:00` multiple caps can be detrimental!
![](https://i.imgur.com/ibJpje5.png =x200)
" I've been reading about never decoupling with different cap values, unless you really know what you are doing, and instead parallel similar caps"
- "Why do you use multiple bypass capacitors?
To get the lowest impedence across the largest frequency range possible. Unlike ideal capacitors, real capacitors have inductance [ESL] causing high impedence at high frequencies, potentially rendering a specific capacitor useless. So another parallel capacitor might oparate as desired in the particular frequency range."
![](https://i.imgur.com/VoULUYO.png =x200) ![](https://i.imgur.com/QfDC441.png =x200)

![](https://i.imgur.com/0ekM5ki.png)
