All Questions
104
questions
0
votes
1
answer
52
views
DC bias vs AC voltage change rate on MLCC capacitors
I'm looking at the following MLCC capacitor, which is a 10uF X5R ceramic: official datasheet
I know that ceramic capacitors which aren't C0G have an important variation of their value depending con ...
- 1
0
votes
1
answer
46
views
Is there a shielding difference from switching terminals of an MLCC capacitor?
For electrolytic capacitors, the capacitor has only one working polarity (or it
usually will get damaged if reversed).
For film capacitors, the outermost metal layers ("left" and "right&...
- 544
2
votes
2
answers
194
views
Same capacitance, same class, same voltage rating, different package characteristic
The same capacitance has the same class at the same voltage rating. However, the capacitor package are different. Will the characteristics be different?
I usually wouldn't pay any attention to this, ...
- 756
0
votes
1
answer
141
views
Can you replace ceramic or tantalum capacitors with aluminum electrolytic capacitors?
I have a question about the hookup for my 12VDC to 5VDC step down module - the K7805JT-500R3.
It states in the datasheet that ceramic capacitors are what can be used but it also states that tantalum ...
- 783
3
votes
2
answers
210
views
What is the reason for exponential decay of ceramic capacitor leakage current?
I came across two Tektronix documents describing how to measure leakage current. Both of them say that current decays exponentially, which I don't understand. I expect a constant leakage current ...
- 1,309
4
votes
4
answers
716
views
Will a ceramic capacitor work for a class-B amplifier output?
I am working on a project that uses a basic class-B amplifier design for lo-fi audio output (just plays some clicks and beeps through a small speaker as UI sounds). Here is my schematic:
For ...
- 495
1
vote
2
answers
136
views
What package is the best choice for MAX485 bypass capacitors?
What capacitor package is the best choice for bypassing the MAX485?
C1: between LCSC part #C342629 and #C89632?
C2: between LCSC part #C967612 and #C30926?
Note: this question is a following ...
- 87
9
votes
1
answer
328
views
Why does the measured capacitance value of some ceramic capacitors keeps on increasing?
The capacitance of two ceramic capacitors were measured using an LCR meter (Agilent E4980A) at 1 kHz. The measured capacitance values of 100 pF and 100 nF capacitors are shown below.
The value of 100 ...
- 93
3
votes
3
answers
152
views
Can Class D output capacitors be placed towards both rails?
Please consider the simplified Class D output stage below. Depending on the half-bridge duty cycle, different output voltages (within the power supply range) can be applied to the load.
simulate this ...
- 22.4k
1
vote
1
answer
103
views
How to visually distinguish metal film and ceramic capacitors (leaded)?
This question only involves the leaded components.
Electrolytic capacitors are each to recognize since they are usually in cylindrical cans. However, I am not sure about distinguishing the other two ...
- 749
0
votes
1
answer
304
views
A ceramic capacitor on my PC SMPS has blown; need to identify it [closed]
I have a Cooler Master 600 W SMPS Model no. RS-600-pcar-E3. Recently I tried to switch on my motherboard and I heard something burst and saw sparks before it stopped working.
After opening it I got a ...
- 9
4
votes
1
answer
485
views
What is the meaning of temperature characteristics in capacitor datasheet?
I found a datasheet for a medium voltage ceramic capacitor in door knob form factor. I'm not familiar with one of the stated characteristics. Specifically, the temperature characteristics: +22/-33%....
- 119
2
votes
1
answer
925
views
What does "M" value mean for ceramic capacitors like: 226M 473M 107M?
For example:
22uF 16V 226M
47uF 10V 476K
What does this last specification mean?
- 69
2
votes
3
answers
141
views
What is the result of wiring an electrolytic cap in series with a ceramic when parallel was intended?
FINAL UPDATE A reassessment of my power consumption has led me to the solution to all of my problems. I picked up a 5V, 5A power supply (giving me plenty of overhead), reassembled my project, and it ...
- 123
1
vote
0
answers
41
views
How can we model the piezoelectric behavior of a capacitor to mechanical and thermal transients?
I would like to model the behavior of ceramic capacitor to thermal and mechanical stress.
We are seeing power supply fluctuations during reliability test and suspecting the ceramic capacitors' role in ...
- 3,032