Electronics Forum: solderability resistor arrays (Page 1 of 52)

8 way 1606 resister arrays

Electronics Forum | Fri Mar 21 20:24:13 EST 2003 | msimkin

Has anyone had success in soldering these devices, in particular devices from a company callede Pycomp. They are 8 way 0402 sized terminations. I have experemented with the printing process, placement verification & reflow profile. Unfortuanlty, I am

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 | Thu Aug 21 08:15:07 EDT 2008 | naynayno

Thanks Dave, I will be sticking with Manufacturing Engineering. These are good guidelines but what is standard clearance for various packages? This is a dimension we usually seek by eye, whether we will have a problem or not. We use straight DI -

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

Re: resistor networks- leadless vs. gull wing

Electronics Forum | Mon Sep 27 04:08:25 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

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

Thinking of Led lamp and resistor

Electronics Forum | Fri Oct 28 04:56:12 EDT 2016 | lilybell

I read a few posts here about resistor in led applications. The thing is, the resistor has clarified as this shows:was always use with a power source delivering a higher forward voltage than the led could tolerate(ex: a 9volt battery hook up to a 3w

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