capacitor identification, please help
yarisboy
Posts: 245
I have three capacitors I'm not sure about. The first is, I believe, tantalum.
The script on it is:
|
1|
35+
The second also should be tantalum.
It's script is:
104L
+--
The third looks like what the Parallax store lists as "mono radial"
and has the script:
725
RAF
The script on it is:
|
1|
35+
The second also should be tantalum.
It's script is:
104L
+--
The third looks like what the Parallax store lists as "mono radial"
and has the script:
725
RAF
Comments
The second one sounds like a 0.1uF or 100nF (or 10 x 10^4 pF, hence the 104) ceramic.
I don't know what the third one would be. The 725 doesn't make sense in terms of standard values. You might look elsewhere on the device for another code.
Long ago Nick gave me a Boss Board to get started with. I'm finally building it. The spec sheet for the 3.3 Vreg says I should have an input capacitor of at least 100nf preferably tantalum. The 5.0 Vreg wants at least .33uf for the input capacitance, again tantalum recommended. The build assistance pages on Gadget Gangster show common electrolytics going in positions Pa and Pe so I wonder if I worrying about trivial issues again. The regulators on this board are both fed from the polarity protection diode so the 3.3 doesn't wreck the current budget for the 5.0 regulator. As a back-up general purpose bench Propeller my application is, as of yet, unspecific. The spec sheets say the Vreg output capacitors improve transient response so in my case they are big. Given the identification it looks like I have what I need.
Thanks again Mike.