Re: Pb-Free Solder analysis

Brian, I seem to remember hearing somewhere that lead-free solder joints, especially ones that are fairly large solder joints, may show a higher amount of cracks in the surface than SnPb joints of the same size. (I think the reasons had to do with amount of thermal expansion and contraction, and

Pb-Free Solder analysis

Good People, I am performing a quality review on an unit based on IPC-A-610D. Section 5.2.7 indicates that solder stress lines are acceptable for lead-free solders, but not for leaded solders. Does this make sense to anyone ? What great revelation am I missing ? Thanks and luck, Brian - This

RE: RF Power Amplifiers

The broadband field probes used, the two suppliers to remain nameless since they are well known, seemed to sum in a fashion, all the energy present in the chamber, fundamental, and harmonics, such that as the harmonic energy was reduced, there was a reduction in the displayed field strength.

Re: RF Power Amplifiers

ah yes, that was part of the solution. But the selectivity was still a bit wide, so additional tech were needed. Bob Richards b...@toprudder.com wrote: I'm not familiar with the specific test requirements for receivers, but the 1000-4-3 spec allows step sizes of 1% of the fundamental. If not

RE: EN60950-1 Table 5B error?

Thanks David and Don. This makes sense now. Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. phone: (604) 422-2546 fax: (604) 420-1591 e-mail: jim.eich...@xantrex.com web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is

Re: RF Power Amplifiers

As yes, it did require very arcane, exotic, and expensive, techniques for the test lab to solve this one. The DUT was meant to be dirt cheap and so could/would not put in the front end selectivity necessary to limit the exposure to a very narrowband. ps. the immunity requirement was quite a bit

Re: Guidelines for what standard to use

Sorry, I meant EMC Directive not standard. Andy Garcia. Andy Garcia arg...@yahoo.com wrote: Your starting point is the Official Journal of the EU. If you have a product level (type) standard that applies to your device, look there. Oherwise, you need to apply the generic EMC standard, under

RE: NRTL mark required for goods shipped into USA?

Hello All, Also from GR1089: 7.2 Listing Requirements R7-1 [22] All network equipment that is directly powered by commercial ac, either through a hard-wire or plug-and-cord connection, shall be listed for the purpose by a Nationally Recognized Testing Laboratory (NRTL)and is mentioned in

Re: Guidelines for what standard to use

In message d4ce13f97d13bb4e805b503aa504e30d02a30...@chimsg1-2k.wms.com, dated Wed, 14 Jun 2006, Sosnoski, Michael msosno...@wmsgaming.com writes IEC 61000-3-2 is the applicable standard. My question is how do you know if this standard needs to be applied to a particular product? For Europe,

Fw: Guidelines for what standard to use

I believe the latest list of standards for the EMC directive was published in the Official Journal last October. http://eur-lex.europa.eu/LexUriServ/sit /en/oj/2005/c_246/c_24620051005en00010024.pdf I would also recommend using the safety standards for guidance. The scope of an EMC standard may

RE: Guidelines for what standard to use

Thanks, My brain-freeze. Mike     From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Andy Garcia Sent: Wednesday, June 14, 2006 10:47 AM To: emc-p...@ieee.org Subject: Re: Guidelines for what standard to use Your starting point is the

Re: China RoHS Common QA

Hi Richard, For CCC, Singapore MAY have an MRA with China. I cannot confirm it at this time. As of July last year, the US doesn't have an MRA with China. If you need to know the latest MRA development between the US and China, NIST is a good contact point. Please let me know if you need

RE: Philippines AC Plug - Saftey Question

Thank very much!! Best Regards Charles Grasso Compliance Engineer Echostar Communications Corp. Tel: 303-706-5467 Fax: 303-799-6222 Cell: 303-204-2974 Pager/Short Message: 3032042...@vext.com Email: charles.gra...@echostar.com; Email Alternate: chasgra...@ieee.org _ From: Zmudka, Bob

Re: Guidelines for what standard to use

Your starting point is the Official Journal of the EU. If you have a product level (type) standard that applies to your device, look there. Oherwise, you need to apply the generic EMC standard, under which you are required to meet the requirements of 61000-3-2. Example; You have a

RE: China RoHS Common QA

hello Grace, thanks for the information on the China ROHS, in reading the Q and A's you provided, Q's 31 and 34 pertain to the MRA between countries and also allowance of the testing to be done anywhere and NOT have to be done in China. Did I read this correctly? Does China have a list of

Philippines AC Plug - Saftey Question

The Philippines use a NEMA 5 15 Socket for their 220V distribution. Does anyone know what plug is or can be approved for use in the Philippines ?? Thanks! Best Regards Charles Grasso Compliance Engineer Echostar Communications Corp. Tel: 303-706-5467 Fax: 303-799-6222 Cell: 303-204-2974

Guidelines for what standard to use

Dear members, IEC 61000-3-2 is the applicable standard. My question is how do you know if this standard needs to be applied to a particular product? Yes, the standard states that it applies to any piece of equipment that draws = 16 Amps of mains power. This leads me to believe that without

Re: NRTL mark required for goods shipped into USA?

Hello Charlie, The United States National Electrical Code does not require NRTL Listing for general installations, but it is a benefit. Products that are not NRTL marked are subject to the approval of the local electrical inspector. That person has the ability to accept unmarked product, but

Re: RF Power Amplifiers

As pointed out earlier, the harmonics could be a few dB down from the carrier at the amplifier output, but the XMIT antenna is more efficient at the harmonic than at the fundamental by a greater number of dBs than the harmonics are below the carrier. From: Haynes, Tim (SELEX) (UK Capability

RE: EN60950-1 Table 5B error?

Jim, The table is not wrong. The working voltages in that column are non-hazardous, so basic, supplementary and reinforced insulation do not apply. The application for that column would be the use of 5.3.4 (b) for evaluating SELV or ELV functional insulation. Regards, Don Gies, N.C.E Senior

RE: EN60950-1 Table 5B error?

Jim, I believe the table is ok. Table 2G note 1 points to clause 5.3.4, requirements for functional insulation. If you don't meet clearance and creepage distance requirements for functional insulation, you can choose 500V electric strength test as alternate option. Electric strength

Northeast Product Safety Society Meeting on Wednesday, June 28th

All, NOTE – Location Change For The June 28 NPSS Meeting Location: BioDefense Corporation 128 Spring Street Lexington, MA 02062 Contact is Tony Nikolassy at (781) 861-8810 X222 There will be a Northeast Product Safety Society meeting on Wednesday, June 28th, at BioDefense Corporation at 128

Re: EN 60204-1: 1997 vs. 1998 vs. 2006

Interestingly, I have in the last hour had a marketing e-mail from BSI which is trying to sell me a copy of EN 60204-1:2006. I've spoken to them and they tell me that it is due for publication on 22 September 2006. There's some information on the BSI web site about the new standard at:

NRTL mark required for goods shipped into USA?

Group Client wishes to ship wirelss Telecom equipment to US customer for use at RBOC central office or commercial sites. The unit meets IEC60950-1, but does not yet have an NRTL mark. As I understand it OSHA requires electrical equipment in a place of work to be NRTL listed / field marked or

RE: RF Power Amplifiers

Hi All, I think that there is something wrong in the set-up that you are using if the measured field strength drops when you filter the harmonics out. If the fundamental is a few dB's larger than any of the harmonics then a flat monitor would be reading the fundamental power / field. Removing