Electronics Forum: resistor

Contamination under chip resistor array

Electronics Forum | Thu Aug 21 08:33:09 EDT 2008 | davef

There is no standard as such. It's easy to see why. It's too complicated and has such a small payoff. Standoff is comprised of: * Package height * Solder thickness between the pad and the component lead * Delta of pad thickness and solder mask For p

Contamination under chip resistor array

Electronics Forum | Wed Aug 20 17:05:42 EDT 2008 | naynayno

We have experienced contamination under flat chip arrays. The lab report is still open but it appears to be dendrite growth. We have been trouble-shooting our process and cleaning equipment. My question is are there any specific design or best p

Contamination under chip resistor array

Electronics Forum | Wed Aug 20 20:10:30 EDT 2008 | davef

Naw, accounting is boring. Standoff could be an issue. Coupla things: * Above 30 thou, just about any cleaning process, more sophisticated than a garden hose, will produce acceptable results * Below 10 thou, can be cleaned with best efforts, but not

resistor and capacitor naming codes for smt.

Electronics Forum | Sun Sep 27 10:42:35 EDT 1998 | l atch

I'm looking for a chart that will help me identify smt resistors and capacitors. I have figured out a few on my own. a resistor with the numbers 510 printed on it was a 51 ohm resistor. numbers 221 was a 220 ohm resistor. numbers 102 was a 1k resis

Baking of Thick film resistor chip required

Electronics Forum | Thu Apr 27 02:39:50 EDT 2017 | ajaytyagi

Thanks for sharing your experience. I have similar view too.

Missing paint on a surface mount resistor

Electronics Forum | Thu Aug 27 13:30:04 EDT 2020 | emeto

If there is damage of the glass coating or exposure of the resistive element it is a defect.

Baking of Thick film resistor chip required

Electronics Forum | Wed Apr 26 06:09:12 EDT 2017 | ajaytyagi

Hi, Pl let me know about opinion/experience whether thick film chip SMD resistor which is MSL-1 Required to bake before being usedon SMT line. I want to use SMD resistance spool which is around 2 yeasr old kept at 25 deg room temperature at around 4

resistor networks- leadless vs. gull wing

Electronics Forum | Fri Sep 24 11:38:32 EDT 1999 | danielm

I am in the process of picking a new resistor network for one of our new board. Since we are new to SMT i would like to get some opinions on networks. Currently we use one molded gullwing type network on our boards with no problems. Other than space

Re: resistor networks- leadless vs. gull wing

Electronics Forum | Fri Sep 24 23:33:30 EDT 1999 | Earl Moon

| I am in the process of picking a new resistor network for one of our new board. Since we are new to SMT i would like to get some opinions on networks. Currently we use one molded gullwing type network on our boards with no problems. Other than spac

Re: resistor networks- leadless vs. gull wing

Electronics Forum | Sun Sep 26 14:09:24 EDT 1999 | jgodfrey

| | I am in the process of picking a new resistor network for one of our new board. Since we are new to SMT i would like to get some opinions on networks. Currently we use one molded gullwing type network on our boards with no problems. Other than sp


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