capacitors
Table of Contents
Japanese Manufacturers
Very good, but can be faked.
| Marking | Brand |
|---|---|
| Empty rectangle | Chemi-Con |
| KZE, KZJ, KZG | Chemi-Con |
| [M] | Panasonic |
| Rubycon | Rubycon |
| Sanyo | Sanyo |
| Nichicon | Nichicon |
Taiwan Manufacturers
| Marking | Brand |
|---|---|
| Teapo | Teapo |
Lifespan
The normal lifespan of a non-solid electrolytic capacitor of consumer quality, typically rated at 2000 h/85 °C and operating at 40 °C, is roughly 6 years. It can be more than 10 years for a 1000 h/105 °C capacitor operating at 40 °C. Electrolytic capacitors that operate at a lower temperature can have a considerably longer lifespan.
| Nominal Value | 105°C | 2 000h | 95°C | 85°C |
|---|---|---|---|---|
| Real temp | 95°C | 4 000h | 2 000h | - |
| Real temp | 85°C | 8 000h | 4 000h | 2 000h |
| Real temp | 75°C | 16 000h | 8 000h | 4 000h |
| Real temp | 65°C | 32 000h | 16 000h | 8 000h |
| Real temp | 55°C | 64 000h | 32 000h | 16 000h |
| Real temp | 45°C | 128 000h | 64 000h | 32 000h |
Polymer
This rule characterizes the change of thermic polymer reactions speed within the specified degradation limits. According to this formula the theoretical expected service life of a 2000 h/105 °C polymer capacitor, which is operated at 65 °C, can be calculated (better estimated) with about 200,000 hours or approximately 20 years.
capacitors.txt · Last modified: 2022/10/13 09:30 by Jan Forman