IPC/EIA J-STD-001 (soldering) revisions (Want to replace IPC-A-610)

[leanne]

I'm lazy & hate to reinvent the wheel so I've been hammering away at search engines looking for an answer.

I've been searching online & so far have only come up with one link that was usable for J-STD-001A to J-STD-001B. All of my favorite search tools have failed me.

I have a design engineer wanting to replace IPC-A-610 (no rev referenced) with J-STD-001A in an design change. Our company is working to J-STD-001B. The latest version approved & available is J-STD-001C. I prefer to either not reference the revision of the J-STD (since the drawing indicates "the issue in effect at the date of invitation for bids or request for proposal shall apply") or use the version for which our inspection staff has been trained. The design engineer wants to know the difference between these three doc versions. I can only access J-STD-001C on usainfo & our internal approved version of J-STD-001B (with additional requirements for "important aspects" not covered in the J-STD-001B - for some reason, the powers that be have not seen fit to adopt J-STD-001C).

Does anyone have any non-intranet links in your favorites/bookmarks that compare/contrast J-STD-001A to J-STD-001B and/or J-STD-001B to J-STD-001C?

[Al Rosen]

Originally Posted by leanne

I'm lazy & hate to reinvent the wheel so I've been hammering away at search engines looking for an answer.

I've been searching online & so far have only come up with one link that was usable for J-STD-001A to J-STD-001B. All of my favorite search tools have failed me.

I have a design engineer wanting to replace IPC-A-610 (no rev referenced) with J-STD-001A in an design change. Our company is working to J-STD-001B. The latest version approved & available is J-STD-001C. I prefer to either not reference the revision of the J-STD (since the drawing indicates "the issue in effect at the date of invitation for bids or request for proposal shall apply") or use the version for which our inspection staff has been trained. The design engineer wants to know the difference between these three doc versions. I can only access J-STD-001C on usainfo & our internal approved version of J-STD-001B (with additional requirements for "important aspects" not covered in the J-STD-001B - for some reason, the powers that be have not seen fit to adopt J-STD-001C).

Does anyone have any non-intranet links in your favorites/bookmarks that compare/contrast J-STD-001A to J-STD-001B and/or J-STD-001B to J-STD-001C?

I believe that IPC-610 and J-std-001 are virtually the same. In fact IPC-610 references the J-std. Also, IPC-A-610, I believe, is in revision and due out in January. I like 610 because of the nice photos. I would use it just for that as a reference. There are also 3 classifications that 610 addtresses, determined by the reliability required.

[Wes Bucey]

Originally Posted by Al Rosen

I believe that IPC-610 and J-std-001 are virtually the same. In fact IPC-610 references the J-std. Also, IPC-A-610, I believe, is in revision and due out in January. I like 610 because of the nice photos. I would use it just for that as a reference. There are also 3 classifications that 610 addtresses, determined by the reliability required.

I came across this reference at http://www.engineeringlab.com/ipca610.html

TE0009 Rev B to C Changes for IPC-A-610 & J-STD-001
This course presents what changes were made in changing revisions of these documents. Only content within the modules that has been changed is presented. The course is written so that it's more understandable for the typical production worker. We use our own images, animation and digital photos that bring better understanding to the spec. The material is broken down into more logical chapters and we test the student on every objective that is presented.

CAVEAT!
This is a site which sells a course for $99 - I have no idea whether the couse is worthwhile, but they obviously have access to the documents you seek. Push comes to shove, you can ask them where to get what you need. I have absolutely no connection with them or anyone in the soldering trade.

I came across this site by Googling "IPC-A-610" (using the quote marks)

Here's an even more pertinent note at http://www.skolnik-tech.com/what_is_..._j_std_001.htm

What is the difference between IPC-A-610 Standard & IPC/EIA J-STD-001 Standard?

With the cancellation of MIL-STD-2000 and other Department of Defense soldering/material standards, J-STD-001C is the sole industry-consensus standard covering soldering materials and processes. Produced by IPC and EIA, this standard describes the materials, practices, requirements, methods and verification & acceptance criteria for producing quality soldered electrical & electronic interconnections and assemblies. Its intent is to utilize the process control methodology to ensure consistent quality levels during the manufacture of products.

This standard recognizes that electrical and electronic assemblies are subject to classifications by intended end-item use. Three general end-product classes have been established to reflect differences in producibility, complexity, functional performance requirements, and verification (inspection/test) frequency. It should be recognized that there may be overlaps of equipment between classes. J-STD-001C presents clear & precise requirements for all three standard classes of construction and fully complements IPC-A-610C.

Class 1: General Electronic Products - Includes products suitable for applications where the major requirement is the function of the completed assembly.

Class 2: Dedicated Service Electronic Products - Includes products where continued performance and extended life is required, and for which uninterrupted service is desired but not critical. Typically the end-use environment would not cause failures.

Class 3: High Performance Electronic Products - Includes products where high continued performance and performance-on-demand is critical, equipment downtime cannot be tolerated, end-use environment may be uncommonly harsh, and the equipment must function when required, such as life support or other critical systems.

As mentioned above, IPC-A-610C synchronizes to the requirements expressed in other industry consensus documents and is used with the material and process standard IPC/EIA J-STD-001. IPC-A-610C does complement J-STD-001C; however has criteria outside the scope of J-STD-001C defining handling, mechanical and other workmanship requirements. It is invaluable for all inspectors, operators and trainers as it specifies the industry-accepted workmanship criteria for electronics assemblies, including component orientation and soldering criteria for through-hole, SMT and discrete wiring assemblies, mechanical assembly, cleaning, marking, coating, and laminate requirements, supported and unsupported holes, high voltage applications, jumper wires, etc.

In summary, both IPC-A-610C and IPC/EIA J-STD-001 utilize the same soldering acceptance criteria & requirements. However, J-STD-001 primarily focuses on the soldering issues, whereas IPC-A-610 provides a broader application, including mechanical assembly aspects. The two standards balance each other, and many manufacturers use both of them. In particular, the users may specify J-STD-001 since this standard requires controls during their manufacturing process that the end-item inspection standard IPC-A-610 does not address.

For example, if the assembly has various components that are known to be functionally damaged by high heat, J-STD-001 requires that an acceptable process be developed and documented, and that documentation exist to ensure that the appropriate method is followed during manufacturing. With today’s computer controlled reflow ovens, etc., this is not much of an issue as the process data is typically logged automatically. If the reflow process gets out of control and runs too hot for those sensitive components, most likely the solder connections would appear fine visually and the assembly would progress to the next assembly level. However, if the required J-STD-001 documentation indicated that an assembly was subjected to unacceptably high temperatures during reflow, the engineers will become involved regarding the acceptability for use. It could save a lot of money to detect & to remove a marginal assembly before additional unnecessary cost is incurred at the next level assembly & testing.

In general, when IPC/EIA J-STD-001 is cited or required by contract, the requirements of IPC-A-610 do not apply unless separately or specifically required. When IPC-A-610 is cited in conjunction with IPC/EIA J-STD-001, the order of precedence is to be defined in the procurement documents.

Although I found this; frankly, I would need to take a refresher course to fully understand it. I hope this starts you on the track to finding exactly what you need.

[leanne]

OK, as an update...

I witnessed AT at this supplier (sole source on design up for revision) & noticed the training certificates for J-STD-001 were revision B - someone from my company trained this supplier to the requirements of J-STD-001B class 3. That settled the J-STD rev issue for the ECN when I shared this with the design engineer - he has agreed with me that replacing IPC-A-610 (no rev) with J-STD-001B is the course we will take.

BTW, I'd like to re-iterate that the differences between IPC-A-610 & J-STD-001 was not an issue. The deltas between J-STD-001A to J-STD-001B & J-STD-001B to J-STD-001C were the issue. And, I'm still looking for a comparison of the J-STD revs - in case this question ever arises again....