Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 5   >   >>
Dom Lodge
User Rank
Rookie
Counterfeiting
Dom Lodge   2/25/2014 6:56:25 AM
NO RATINGS
I wonder what future impact this may have on counterfeiting if it was to be applied to all components.  One fo the first things to check is whether the markings are correct / have been changed

Wnderer
User Rank
CEO
Re: Resistor colors
Wnderer   2/24/2014 11:50:54 PM
NO RATINGS
Picking resistors with readable color codes was part of speccing the component back in the thru-holes days. Yes there were these cheap cylindrical brown ones that were almost impossible to read.  We used the peanut shaped beige ones which were readable and the 1% resistors had color codes, too. The 1% had an extra color line. I use to train assemblers to read the color codes and use them to inspect boards. Color codes were very useful. Even if they didn't read the codes, comparing to a known good board, a wrong color component was visibly different. Try that with tiny printing.

seaEE
User Rank
Manager
Re: Not just resistors
seaEE   2/24/2014 10:45:08 PM
NO RATINGS
I heard they are planning to completely get rid of resistors, both leaded and surface mount, because...resistance is futile.

zeeglen
User Rank
Blogger
Re: Resistor colors
zeeglen   2/24/2014 10:35:12 PM
NO RATINGS
@Martin

Exactly -some of the paints are so unclear -red, orange brown can be hard to distinguish.  Sometimes the brown band to designate 1% is the same width as all the other bands - so which end do you read from?  And if the body colour is other than neutral, be careful - the body colour can mix with the bands to make them undecipherable.

Another PO (no, not Purchase Order) is those thru-hole resistors printed with text - when reverse engineering a board, the damn value is always facing DOWN against the pcb.  Same with thruhole caps and diodes - ARRRRGGGHH!

MeasurementBlues
User Rank
Blogger
Markings are irrelevant
MeasurementBlues   2/24/2014 10:32:57 PM
NO RATINGS
They are too small for me to read anyway.

MeasurementBlues
User Rank
Blogger
Re: Not just resistors
MeasurementBlues   2/24/2014 10:30:35 PM
NO RATINGS
MeasurementBlues
User Rank
Blogger
Resistor colors
MeasurementBlues   2/24/2014 10:28:34 PM
NO RATINGS
@Max "the colored bands on the resistors served to distinguish their values,"

Speak for yourself!


By that I mean what if you can;t distinguish resistor colors? In particular ,red, green, brown. I can't and haven't for many years. Even at my first job, I always used 1% resistors because the values were printed with numbers.

I once write a piece called "Help me read this resistor." Perahps it's time to dig it up and post it here.

zeeglen
User Rank
Blogger
Re: Not just resistors
zeeglen   2/24/2014 9:02:43 PM
NO RATINGS
@ Rcurl  You know, I've always wondered why surface mount ceramic capacitors are not marked.

You CAN get SMT capacitors marked with value codes -

http://www.vishay.com/doc?45028

Rcurl
User Rank
Rookie
Re: Not just resistors
Rcurl   2/24/2014 4:28:35 PM
NO RATINGS
I just received this from the Managing Director at Yageo:

We are in process with Digieky to make all their inventory in "Marking Product". Then you just order as usual.
However this process is still running and we can not make a digital swtich. Please understand.



I think I'll steer clear of their product for a while until you folks use up all of the unmarked stuff. Whoever uses the last unmarked resistor, please give me a heads-up!

 

Max The Magnificent
User Rank
Blogger
Re: What about surface mount capacitors?
Max The Magnificent   2/24/2014 4:18:20 PM
NO RATINGS
@Wnderer: I've given this some thought. The very least they could do is color code them within a factor of ten.

Not a bad idea ... maybe have a number of dots for cap value, voltage, etc.

<<   <   Page 3 / 5   >   >>


Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Engineer's Bookshelf
Caleb Kraft

The Martian: A Delightful Exploration of Math, Mars & Feces
Caleb Kraft
6 comments
To say that Andy Weir's The Martian is an exploration of math, Mars, and feces is a slight simplification. I doubt that the author would have any complaints, though.

The Engineering Life - Around the Web
Caleb Kraft

Surprise TOQ Teardown at EELive!
Caleb Kraft
Post a comment
This year, for EELive! I had a little surprise that I was quite eager to share. Qualcomm had given us a TOQ smart watch in order to award someone a prize. We were given complete freedom to ...

Design Contests & Competitions
Caleb Kraft

Join The Balancing Act With April's Caption Contest
Caleb Kraft
57 comments
Sometimes it can feel like you're really performing in the big tent when presenting your hardware. This month's caption contest exemplifies this wonderfully.

Engineering Investigations
Caleb Kraft

Frankenstein's Fix: The Winners Announced!
Caleb Kraft
8 comments
The Frankenstein's Fix contest for the Tektronix Scope has finally officially come to an end. We had an incredibly amusing live chat earlier today to announce the winners. However, we ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)