Conductive Silver Ink Pen - Micro Tip - CW2200MTP
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Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by choikwhk on Wed Jan 23, 2013 7:27 am

I would like to know some technical information of the conductive silver ink.
1. The numerical value of electric conductivity/resistant
2. Is there any refill of this pen for sale?
3. If I have my own inks, can I refill this pen with them?

Thanks for your attention :)
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by adafruit_support_bill on Wed Jan 23, 2013 8:15 am

Not sure about the conductivity specs, I'll see if I can find that out for you.

The ink reservoir is integral to the body of the pen. They are not refillable.
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by adafruit on Wed Jan 23, 2013 3:28 pm

Not sure of exact conductivity specs but its pretty low if you blob the ink on, maybe about 0.1 ohms per inch?
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by choikwhk on Thu Jan 24, 2013 6:59 am

Thank you for your quick replies. I still have some other questions.
1.Is this kind of silver ink has usually a lower resistant than normal electric wires for electrical banned? Or they are both negligible so no one cares lol?
2.How about the silver concentration in weight% of the ink? I need a lot of technical information for my research before my professor allows me to purchase it.
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by adafruit_support_bill on Thu Jan 24, 2013 8:00 am

The resistance would be higher than a copper wire of similar cross-section. To carry significant currents, you would need to draw a very heavy trace.

The documentation we have for these pens does not discuss the chemical formulation or concentration of silver in the ink. For details like that it would be best to contact the manufacturer directly. Web, phone & email contact information is here:
http://www.adafruit.com/datasheets/2005 ... Tricks.pdf
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by choikwhk on Fri Feb 08, 2013 3:06 am

thank you for the information.
How about the delivery fee? Is it included in the selling price USD$39.95 ? or else how much is it?
And how many days are needed for the arrival after a order is made?
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by adafruit_support_bill on Fri Feb 08, 2013 7:44 am

Most packages are shipped within 24 hours. Shipping cost and delivery time will depend on which shipping method you choose. The cost will be calculated at checkout time. See here for more detail: http://www.adafruit.com/shippinginfo/
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by chem monkey on Fri May 24, 2013 2:14 am

Have a look at this
http://www.youtube.com/watch?v=qHNwJmx6bZ0
is a possible engine made from a naturally occurring high crystalline high diamagnetic graphite and then have a look at this
http://www.youtube.com/watch?v=d8PkQrbm2ns
it is for a conductive ink that’s makes the competition look like pants.
You can get these things really easily from
https://sites.google.com/site/thinkinkfactory123
for the ink and diamagnetic graphite. And they are cheap!
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by maltesemanTS on Tue Mar 11, 2014 4:05 pm

CW2200MTP Specs:

Composition
Material Silver Filled Polymer: Silver Particle Size 10-15 microns
Color: Silver Gray

Setting Rate: <2mm/hr

Properties
Conductivity: 0.02-0.05 ohms/sq/mil
0.00005-0.000125 ohm cm

    (sheet resistivity * area * thickness = 0.02-0.05 ohm/sq/mil * (1 mil x mil square area) * (1 mil thick layer) So a 10 inch trace that is .1 inch wide and 1 mil thick (.001 inch) would be made up of 100 squares (0.1 inch x .1 inch in size). So the resistance would be 0.02-0.05 ohm/sq/mil * 100 sq*mil =
    2 to 5 ohm
    . Keep in mind 1 mil thick traces may not be practical.

Max. Temperature: 400°F (205°C)
Tack-Free Time @ 25°C: 3 to 5 Minutes
Cure Time @ 25°C: 20 to 30 Minutes
Solder Wetting: 2 to 3 Seconds
Electrical Conductivity: Excellent
Adhesion: Excellent
Flexibility: Good
Chemical Resistance: Good
Shelflife: 18 months
Attachments
Untitled.png
CW2200 Spec Sheet
Untitled.png (123.11 KiB) Viewed 272 times
Last edited by maltesemanTS on Tue Mar 11, 2014 5:33 pm, edited 2 times in total.
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Re: Conductive Silver Ink Pen - Micro Tip - CW2200MTP

by maltesemanTS on Tue Mar 11, 2014 4:20 pm

CW2200 Alternate:

Folks,

Consider the following conductive ink options:

    CW2200 conductive pen (silver particles), with conductivity of .02-.05 ohm/sq/mil and an Adafruit price of $49.95 for 9g (.32 oz). A 10 in trace that is .1 inch wide and 1 mil thick (.001 inch) would be made up of 100 squares (0.1 inch x .1 inch in size). So the resistance would be 0.02-.05 ohm/sq/mil * 100 sq*mil =
    2 to 5 ohms. Right :?:

    CW2000 conductive pen (nickle filled polymer), with conductivity of 1.0-1.5 ohm/sq/mil and an Allied Electronics price of $11.80 for 9g (.32 oz). A 10 in trace that is .1 inch wide and 1 mil thick (.001 inch) would be made up of 100 squares (0.1 inch x .1 inch in size). So the resistance would be 1.0-1.5 ohm/sq/mil * 100 sq*mil =
    100 to 150 ohms. Right :?:

    CW2300 conductive pen (silver coated copper filled polymer), with conductivity of 0.07-.09 ohm/sq/mil and an Allied Electronics price of $33.60 for 9g (.32 oz). A 10 in trace that is .1 inch wide and 1 mil thick (.001 inch) would be made up of 100 squares (0.1 inch x .1 inch in size). So the resistance would be 0.07-.09 ohm/sq/mil * 100 sq*mil =
    7 to 9 ohms. Right :?:

    MG 8420-P conductive pen (acrylic based with silver), with conductivity of 0.2 ohm-mil and an Allied Electronics price of $29.95 for .3 oz.

    This product vendor is different than for the other products. The MG 8420-P spec sheet lists actual resistivity in unit of ohm*mil, but this is equivalent to 0.2 ohm/sq/mil, which is surface (or sheet) resistivity:
    (0.2 ohm-mil) * (1 mil think layer) / (1 mil x mil square area) = 0.2 ohm but commonly written as ohm/square to differentiate from bulk resistance. A 10 in trace that is .1 inch wide and 1 mil thick (.001 inch) would be made up of 100 squares (0.1 inch x .1 inch in size). So the resistance would be 0.2 ohm/sq/mil * 100 sq*mil =
    20 ohms. Right :?:
Good luck making 1 mil thick traces; I'd guess they'll be quite a bit thicker!

-----------------------------------------------------

Now you have a choice depending on how much resistance you can tolerate for your project. CW2000 is significantly less conductive but significantly less expensive. Perhaps the CW2300 is the best compromise; again, it will be application specific depending on how much power you have at your disposal. It might be much more feasibly to simply bump up the power on your project to compensate for the higher resistivity and save a bunch of cash.

--
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