Electronics Forum: std (Page 36 of 83)

Re: 0402 placed by CP3

Electronics Forum | Fri Dec 15 02:32:12 EST 2000 | PeteC

Ian, The vision should recognize it; given you've got the correct Part Data. To run 0402 effectively with a CP3 you need: 1. A good, I mean real good, CP4 style feeder for 0402 (1005) 2. 0.7mm nozzles (get from second-source supplier such as WT in

Re: Humidity Control

Electronics Forum | Mon Nov 27 12:17:02 EST 2000 | Dason C

Chris, you are not completely right. Our industrial is following the IPC standard as our guideline. Per IPC J-STD-033 has specify the floor life at para. 8 (normal condition at 30C/60%RH). If Victor can control his environment at 32% then the compo

Re: popcorning in wave soldering

Electronics Forum | Tue Sep 19 11:28:09 EDT 2000 | Wolfgang Busko

Mikeal�s approach is one of the more cautious ones. IPC/JEDEC J-STD-033 clause 8.6 talks about 200�C body-temperature not to be exceeded and how it�s best measured. If you go for that method and you made sure that in your wavesoldering (that�s what

Re: Stacking chips

Electronics Forum | Thu May 18 13:08:33 EDT 2000 | Wolfgang Busko

Chris, one question, which standard allows to put it in the drawings/dokumention? As I said in my old IPC-D-275 it says "no". Did it change with the new edition ? Referring to J-STD-001 in this case seems to me like "I followed only the orders and do

Re: BGA design Guidelines

Electronics Forum | Thu Mar 09 05:44:07 EST 2000 | Wolfgang Busko

Hi Edmund, J-STD-013 "IMPLEMENTATION of BALL GRID ARRAY and other HIGH DENSITY TECHNOLOGY" should be a great help for you. Component manufacturers ( try Motorola via Internet) also give good advice. For the DFM aspects get in contact with your asse

Through Hole Reflow

Electronics Forum | Tue Feb 22 05:50:40 EST 2000 | Arulvanan P

Hi, I am in the process of implemeting Through Hole Reflow. 1.I would to know which are the products/Companies that use that use this process. 2. Is there any reference / standard to convince my QA dept. to accept the boards even though there is no

Upside Down Chips

Electronics Forum | Thu Mar 15 05:59:08 EST 2001 | PeteC

Good point. I'm having trouble with the words "electrical elements" in the J-STD. Is a marking an "element" ?? An upside down chip resistor is certainly not a defect in that it does not negatively impact product functionality or dependability. I sugg

Upside Down Chips

Electronics Forum | Thu Mar 15 08:16:28 EST 2001 | davef

In a similar conversation ... Alex Krstic, NovAtel Inc. said ... Hello all. We recently received some boards with some of the chip resistors placed with their resistive elements towards the board. J-STD-001B and C view this as violation for both Cl

Soldering fumes

Electronics Forum | Tue Mar 20 15:55:59 EST 2001 | CAL

I only inhale flux with a high IPA content.(joke for those who don't know me) I have seen the inside of duct work for our wave soldering machine............NASTY! DAVE F. is right! Flux contains a lot of bad stuff- Chlorides, Bromides, Flourides,

Soldering fumes

Electronics Forum | Tue Mar 20 15:59:27 EST 2001 | CAL

I only inhale flux with a high IPA content.(joke for those who don't know me) I have seen the inside of duct work for our wave soldering machine............NASTY! DAVE F. is right! Flux contains a lot of bad stuff- Chlorides, Bromides, Fluorides,


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