Electronics Forum | Tue May 16 20:43:22 EDT 2000 | Dave F
Ashok: Hey guy ... snow starting to melt yet? Keeping process insultaors with a charge of over 2kv a foot from ESDS items seems reasonable. The HBM assumes contact with the item, so it should have a lower potential. You should double check with E
Electronics Forum | Fri Mar 24 13:02:53 EST 2000 | Ashok Dhawan
Two questions on ESD: 1. What is recommended method ( Air ionizer , grounding strip etc. ) for a board prep ? We Kapton Tape for masking pads or not to be soldered areas. or Is there a wet mask recommended for masking boards campatible with NC Sold
Electronics Forum | Tue May 16 16:32:38 EDT 2000 | Ashok Dhawan
1) I had downloaded ANSI/ESD-S20.20-1999 from www.eosesd.org web site. I am not clear whether section 6.2.3.2 is correct. It states that " All process essential insulators that have electrostatic fields that exceed 2000 volts should be kept at a mi
Electronics Forum | Fri May 26 17:06:21 EDT 2000 | Dave F
Guys: Folk at EOSEAD told me two things on this: 1 Yes "All process essential insulators that have electrostatic fields that exceed 2000 volts should be kept at a minimum distance of 12 inches from ESDS items." is correct. 2 The latest revision to
Electronics Forum | Tue May 16 16:54:14 EDT 2000 | Ashok Dhawan
For a typical assembly facility ( where assembly of circuit cards and shelves is carried out), what are usual recommendation for : 1.Ambient conditions ( Temp and Relative Humidity) 2.Use of Smocks If humidity is less than 40%, what are special prov
Electronics Forum | Wed May 17 12:41:41 EDT 2000 | Dave K
2K at 12 inches seems high considering that degradation can take place at anything over 200v. If I recall correctly we required at least 3 feet of distance. It's been a while since I've been an ESD coordinator. Thank god that chapter in my life
Electronics Forum | Thu Dec 21 04:27:31 EST 2000 | teohbengee
Need help urgently. Anyone can provide me some information or site on reliability test on PCB assembly like solder joint or anything. Some test like ERSA Test, SHMOO Test, Pull Test, Temperature cycle and humidity Test, vibration Test or any related
Electronics Forum | Mon Mar 13 08:59:20 EST 2000 | Ashok Dhawan
I could not find a specific clause or section in J-STD-001B which can relates to special requirements in storage, packing and handling of Moisture sensitive devices per J-Std-033 / 786A /-022 . I guess the way ESD is relevant to electronics assemb
Electronics Forum | Tue May 23 16:56:10 EDT 2000 | Ashok Dhawan
For grounding Table Mats/ Floor Mats and workstations, does grounding resistor need special characterstics e.g Wattage, material of construction, etc. We intend to use 1M Ohms resistor. EIA-625 does refer to EOS/ESD-S6.1 standard ( paragraph 7) fo
Electronics Forum | Mon Mar 13 08:59:20 EST 2000 | Ashok Dhawan
I could not find a specific clause or section in J-STD-001B which can relates to special requirements in storage, packing and handling of Moisture sensitive devices per J-Std-033 / 786A /-022 . I guess the way ESD is relevant to electronics assemb
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