Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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SMT electronics assembly manufacturing forum.


Chris Link

#15136

Mydata placment reliability | 7 July, 1998

Any Comment's about mydata placment reliability (repeatablity) on all types of components. we have trouble quantifying just how good it is. Is it as good as Mydata Claim ?? Please help

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Joe Herz

#15139

Re: Mydata placment reliability | 7 July, 1998

| Any Comment's about mydata placment reliability (repeatablity) on all types of components. | we have trouble quantifying just how good it is. | Is it as good as Mydata Claim ?? | Please help We have 4 Mydatas running at this time. Non vision parts must be mechanically centered which, over time does not lend itself to placement repeatability. 0603s pose some issues, specifically, the indexing mechanism of Mydata's magazines must be adjusted frequently to keep the tape pocket centered. If you plan to place a lot of passives with a Mydata machine, don't. Look at a machine with some form of "non-contact" centering for passives such as laser (Zevatech) or CCD camera (Panasonic). As for fine pitch parts, we have no complaints. Centering repeatability has been good. (We track placement accuracy daily) BGAs do pose a fairly serious problem however. The current software does not allow teaching of a "non-full array" BGA. That is an array that has center or corner balls missing. We are currently building products with 3 different BGA packages and all are "non-full array". I could be off base here but it appears that many BGA configurations are NOT full array. Mydata says they will incorporate this capability into the next software release due out towards the end of the summer, but they have typically been late with feature enhancements. Prototyping and low volume environments are what these machines were built for and they serve the purpose in that regard. Think hard about what your operation will be doing in 6-24 months before selecting Mydata.

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Joe Herz

#15140

Re: Mydata placment reliability | 7 July, 1998

| | Any Comment's about mydata placment reliability (repeatablity) on all types of components. | | we have trouble quantifying just how good it is. | | Is it as good as Mydata Claim ?? | | Please help | We have 4 Mydatas running at this time. | Non vision parts must be mechanically centered which, over time | does not lend itself to placement repeatability. 0603s pose some issues, | specifically, the indexing mechanism of Mydata's magazines must be adjusted | frequently to keep the tape pocket centered. If you plan to place a lot of | passives with a Mydata machine, don't. The HYDRA option gives you the ability to gain some placment speed but doesn't make sense unless you are running product that has a low part mix and is a high runner such a SIMMs/DIMMs. Look at a machine with some form of | "non-contact" centering for passives such as laser (Zevatech) or CCD camera | (Panasonic). | As for fine pitch parts, we have no complaints. Centering repeatability has | been good. (We track placement accuracy daily) BGAs do pose a fairly serious | problem however. The current software does not allow teaching of a "non-full | array" BGA. That is an array that has center or corner balls missing. We | are currently building products with 3 different BGA packages and all are "non-full | array". I could be off base here but it appears that many BGA configurations are NOT full array. | Mydata says they will incorporate this capability into the next software release | due out towards the end of the summer, but they have typically been late with feature | enhancements. | Prototyping and low volume environments are what these machines were built for and | they serve the purpose in that regard. Think hard about what your operation will | be doing in 6-24 months before selecting Mydata.

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Chris

#15138

Re: Mydata placment reliability | 7 July, 1998

| Any Comment's about mydata placment reliability (repeatablity) on all types of components. | we have trouble quantifying just how good it is. | Is it as good as Mydata Claim ?? | Please help There is a product called Accuspec which can measure the repeatablity and accuracy of any placement equipment. ( 408) 270-8900 give them a call.

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Chris

#15137

Re: Mydata placment reliability | 7 July, 1998

| Any Comment's about mydata placment reliability (repeatablity) on all types of components. | we have trouble quantifying just how good it is. | Is it as good as Mydata Claim ?? | Please help There is a product called Accuspec which can measure the repeatablity and accuracy of any placement equipment. ( 408) 270-9200 give them a call.

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