Dear Technicians,
What conditions (of voltage, current, humidity, frequency, and so on) do cause a SMD capacitor go weak or bad in a CPU VRM circuit on a computer/laptop mainboard?
I want to know them only for three major types of SMD capacitors which are used in recent mainboards:
- Polymer electrolytic SMD capacitors
- Tantalum SMD capacitors
- Ceramic SMD capacitors
I attached sample photos (taken from the Internet) of these three types of capacitors for better understanding. Interestingly, some of them seem bad. but I do not know the reasons.
I heard polymer electrolytic capacitors rarely go bad. But I am still interested in knowing the possible conditions that make them weak or bad. Specifically, causes of weakness are more important because they can not be detected by observation.
thanks
What conditions (of voltage, current, humidity, frequency, and so on) do cause a SMD capacitor go weak or bad in a CPU VRM circuit on a computer/laptop mainboard?
I want to know them only for three major types of SMD capacitors which are used in recent mainboards:
- Polymer electrolytic SMD capacitors
- Tantalum SMD capacitors
- Ceramic SMD capacitors
I attached sample photos (taken from the Internet) of these three types of capacitors for better understanding. Interestingly, some of them seem bad. but I do not know the reasons.
I heard polymer electrolytic capacitors rarely go bad. But I am still interested in knowing the possible conditions that make them weak or bad. Specifically, causes of weakness are more important because they can not be detected by observation.
thanks
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