All About Circuits Forum What side of this capacitor is negative and which is positive? (picture inside)
 Register Blogs FAQ Members List Today's Posts Search Today's Posts Mark Forums Read

 Notices Welcome to the All About Circuits forums.Our forum is a place where thousands of students, hobbyists and professionals from around the world share knowledge and ideas. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact us.

 General Electronics Chat Discussion forum for general chat about anything electronics related, including asking questions about material in the All About Circuits E-book, Worksheets, and Videos.

#1
11-07-2007, 10:12 PM
 sofakng Junior Member Join Date: Oct 2007 Posts: 19
What side of this capacitor is negative and which is positive? (picture inside)

Which side of this capacitor is positive and which is negative?

(Click on the image for a few more shots of it)

Here is a link to the Mouser part: http://www.mouser.com/search/Product...985-AFK35V47-F

Thanks for any help!
#2
11-07-2007, 10:19 PM
 jpitz31 Junior Member Join Date: Oct 2007 Location: Escondido, CA Posts: 37

When in doubt, look at the data sheet.

There is an image of the cap, with a (-) sign next to the black 1/4 moon mark on the cap.

Thanks

Joe
__________________
"Resistance is not Futile - Its voltage divided by current"
#3
11-07-2007, 10:25 PM
 Voltboy Senior Member Join Date: Jan 2007 Location: Ground Posts: 197

Yeah, the datasheet tells it all. Apart of the black line (which is the negative side), you can see in the "outline drawing" which is the negative terminal.
__________________
#4
11-07-2007, 10:26 PM
 cheddy Member Join Date: Oct 2007 Posts: 87

Quote:
 Originally Posted by jpitz31 When in doubt, look at the data sheet. There is an image of the cap, with a (-) sign next to the black 1/4 moon mark on the cap. Thanks Joe
He's right the data sheet does say. Also the black line is the negative on every electrolytic capacitor I've ever seen.
#5
11-07-2007, 10:33 PM
 sofakng Junior Member Join Date: Oct 2007 Posts: 19

You guys are awesome, thanks!

Also, a somewhat unrelated question: is super glue condutive? I just used a bunch of it to hold down a socket for a very simple hobby project, but the glue is connecting a couple of pins together...
#6
11-07-2007, 10:39 PM
 jpitz31 Junior Member Join Date: Oct 2007 Location: Escondido, CA Posts: 37

It is not conductive, but I have used it to hold smd devices down while soldering. When heated the supper glue burns off a bit. But some good PCB cleaner will remove it.

Thanks

Joe
__________________
"Resistance is not Futile - Its voltage divided by current"
#7
11-07-2007, 11:44 PM
 beenthere Senior Member Join Date: Apr 2004 Location: Missouri, USA (GMT -6) Posts: 15,815 Blog Entries: 10

Safety note: Super glue contains cyanide. Not at all healthy to inhale, especially as fumes while burning off a board. I don't have another suggestion about a glue to use, but super glue is a very bad idea.
#8
11-08-2007, 12:11 AM
 arthur92710 Senior Member Join Date: Jun 2007 Location: NY, USA Posts: 307

cyanide will just kill you before you notice the effects of the lead in the solder and the zinc chloride in the solder paste.
#9
11-08-2007, 01:01 AM
 Voltboy Senior Member Join Date: Jan 2007 Location: Ground Posts: 197

You could use hot glue, its very useful. I've used it in many projects.
__________________

 Tags capacitor, inside, negative, picture, positive, side

 Related Site Pages Section Title Worksheet Switched capacitor circuitry Worksheet Bipolar junction transistor theory Video Lecture MOSFETS - MOS Field Effect Transistors - Transistors and Transistor Circuits Video Lecture Power Supplies - Applications - Diodes and Diode Circuits Video Lecture Semiconductor Junctions - Semiconductor Technology Video Lecture Generation of Alternating Voltage - Alternating Current Textbook Depletion-type IGFETs : Insulated-gate Field-effect Transistors Textbook Clamper circuits : Diodes And Rectifiers Textbook Practical considerations : Capacitors Textbook Electric fields and capacitance : Capacitors

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Electronics Forums     General Electronics Chat     The Projects Forum     Homework Help     Electronics Resources Software, Microcomputing, and Communications Forums     Programmer's Corner     Embedded Systems and Microcontrollers     Computing and Networks     Radio and Communications Circuits and Projects     The Completed Projects Collection Abstract Forums     Math     Physics     General Science All About Circuits Commmunity Forums     Off-Topic     The Flea Market     Feedback and Suggestions

All times are GMT. The time now is 05:05 AM.