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0answers
71 views

Are polymer tantalum capacitors safe for use in new designs?

I want to expand this post to cover polymer tantalum caps. In my application I have an older switching regulator that outputs 24V and needs large output capacitance (220uf), so ceramic or polymer ...
30
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3answers
3k views

Are tantalum capacitors safe for use in new designs?

I've heard it suggested that "solid tantalum" capacitors are dangerous and may cause fire, may fail short circuit and are fatally sensitive to even very short over voltage spikes. Are tantalum ...
4
votes
1answer
342 views

Are tantalums good for PIC Vcap?

I understand that ceramics are good at ESR but would like to know if tantalum would suffice for my application. Some 16 bit PICs require a >4.7uf cap (10uf recommended) low ESR cap for their internal ...
7
votes
4answers
503 views

What is this: a dual CAP?

I am trying to figure this cap out and locate a new one. It says 107K and 10K on it. Is is polarized ? what is it and where do i find one ?
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2answers
1k views

Which type of 100nF capacitor is best for 78xx regulator output?

I use 78L12 or similar voltage regulators in a few power supplies. I use them in their basic setup, see the picture: This diagram is common for all 78xx and 78Lxx regulators. It says that output ...
8
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3answers
2k views

Why does the LM1117 data sheet specifically specify tantalum capacitors?

I'm planning on using an LM1117 to regulate 5v to 3.3v. Looking at (any of the several) data sheets for the LM1117, they recommend 10uF Tantalum capacitors between input and ground and between output ...
2
votes
1answer
775 views

Replacing Tantalum capacitor?

I'm going to make a PIC programmer, so currently I'm acquiring parts that I'll need. And here's the one part that I can't get: ...
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3answers
336 views

Voltage rating and tantalum capacitors

I was originally considering using a 10u 6.3V 0603 ceramic capacitor for stabilising the onboard voltage regulator on my microcontrollers. However, it may not be capable because of temperature ...