EEVblog 1486 - What you DIDN'T KNOW About Film Capacitor FAILURES!
99.2 هزار بار بازدید -
2 سال پیش
-
You might think you know
You might think you know how film capacitors fail and degrade in capacitance over time - self-healing due to surges, right? WRONG!
Capacitor expert and AVX Fellow Ron Demcko confirms what's really going on after a teardown of some failed and one good polypropylene X class capacitor.
00:00 - Teardown of a some failed film capacitors
00:52 - Self Healing and drop in capacitance
01:44 - Capacitance Measurements
02:15 - Teardown of a new Suntan brand polypropylene X2 film capacitor
03:03 - Different failure modes based on size and winding pressure
05:52 - Unwrapping the film
07:51 - The film inside a NEW film capacitor
09:19 - Teardown of the FAILED uTx brand heater capacitor with half capacitance
10:06 - How Schoopage and the end pin terminations work
12:23 - Teardown continues...
12:45 - WOW! What on earth is this?
14:54 - Elecami Wolf also did a teardown
16:05 - Teardown continues...
17:01 - Separating the film showing both slef-healing and extensive metal film corrosion
18:29 - Another uTx brand failed film capacitor from a Corsair PSU, with 90% loss in capacitance!
Elecami Wolf Youtube Channel: elecamiwolf
19:55 - Let's call an expert! Ron Demcko from AVX tells us the REAL REASON for the failure!
It's moisture ingress and corona demetallization!
Full discussion with Ron Demcko:
Full Discussion - Film Capacitor Fail...
Metallized Film Capacitor Lifetime Evaluation and Failure Mode Analysis report:
https://cds.cern.ch/record/2038610/fi...
Film Capacitors construction: https://passive-components.eu/capacit...
Film Capacitors self-healing explanation: https://passive-components.eu/capacit...
Film Capacitor types: https://passive-components.eu/film-an...
Forum: https://www.eevblog.com/forum/blog/ee...
Support the EEVblog on:
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Odysee: https://odysee.com/@eevblog:7
Web Site: http://www.eevblog.com
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Buy anything through that link and Dave gets a commission at no cost to you.
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#ElectronicsCreators #Capacitors #Teardown
Capacitor expert and AVX Fellow Ron Demcko confirms what's really going on after a teardown of some failed and one good polypropylene X class capacitor.
00:00 - Teardown of a some failed film capacitors
00:52 - Self Healing and drop in capacitance
01:44 - Capacitance Measurements
02:15 - Teardown of a new Suntan brand polypropylene X2 film capacitor
03:03 - Different failure modes based on size and winding pressure
05:52 - Unwrapping the film
07:51 - The film inside a NEW film capacitor
09:19 - Teardown of the FAILED uTx brand heater capacitor with half capacitance
10:06 - How Schoopage and the end pin terminations work
12:23 - Teardown continues...
12:45 - WOW! What on earth is this?
14:54 - Elecami Wolf also did a teardown
16:05 - Teardown continues...
17:01 - Separating the film showing both slef-healing and extensive metal film corrosion
18:29 - Another uTx brand failed film capacitor from a Corsair PSU, with 90% loss in capacitance!
Elecami Wolf Youtube Channel: elecamiwolf
19:55 - Let's call an expert! Ron Demcko from AVX tells us the REAL REASON for the failure!
It's moisture ingress and corona demetallization!
Full discussion with Ron Demcko:
Full Discussion - Film Capacitor Fail...
Metallized Film Capacitor Lifetime Evaluation and Failure Mode Analysis report:
https://cds.cern.ch/record/2038610/fi...
Film Capacitors construction: https://passive-components.eu/capacit...
Film Capacitors self-healing explanation: https://passive-components.eu/capacit...
Film Capacitor types: https://passive-components.eu/film-an...
Forum: https://www.eevblog.com/forum/blog/ee...
Support the EEVblog on:
Patreon: Patreon: eevblog
Odysee: https://odysee.com/@eevblog:7
Web Site: http://www.eevblog.com
EEVblog2: eevblog2
EEVdiscover: eevdiscover
AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g
Buy anything through that link and Dave gets a commission at no cost to you.
Donate With Bitcoin & Other Crypto Currencies!
https://www.eevblog.com/crypto-currency/
T-Shirts: http://teespring.com/stores/eevblog
#ElectronicsCreators #Capacitors #Teardown
2 سال پیش
در تاریخ 1401/04/24 منتشر شده
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