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01005 (0402 in metric unit) printing accuracy

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#35599

01005 (0402 in metric unit) printing accuracy | 18 July, 2005

I am looking for a specification required for printing 01005 size chip.

Does anybody know the solder paste deposition accuracy and alignment accuracy required for printing 01005 chip? And currently which machine can print 01005?

If somebody knows the answer, kindly let me know! Thanks.

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#35614

01005 (0402 in metric unit) printing accuracy | 18 July, 2005

Hi,

Yes, I would love to know this as well. Our machines can handle the component sizes, but how do the printers handle it? We have a DEK, and that's a good printer, but how do you design the stencil to reliably paste release on components this small.

I am guessing elctroform at least?

Regards,

Grant

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#35615

01005 (0402 in metric unit) printing accuracy | 19 July, 2005

Off topic a bit but I wonder what machines out there today are actually capable of placing 01005 components and whether it is a big deal to go down to 01005 from 0201 or 0402.

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Vinit Verma

#35616

01005 (0402 in metric unit) printing accuracy | 19 July, 2005

Assembleon A Series does it. Sony F-130 and Fuji XP143 both claim it possible on these machines. But I too wonder if there is a real need going down to 01005 from 0201 at least!

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#35639

01005 (0402 in metric unit) printing accuracy | 19 July, 2005

Most of the major chip mounter makers claim that they do have a capability of handling 01005. Like Samsung, Yamaha, Assembleon, Panasonic, etc. But I've never found any screen printer company yet. What is the specification required for selecting screen printer for 01005? Is there any international standard for accuracy for printing 01005 ?

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#35642

01005 (0402 in metric unit) printing accuracy | 19 July, 2005

Hi,

Yes, and then how do you design a stencil that paste releases reliably.

Do people put lots of 01005 components on the board, or just the minimum required to do a tough job?

Regards,

Grant

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#35671

01005 (0402 in metric unit) printing accuracy | 20 July, 2005

There is a spec I read that states +/- 0.001" (0.025mm) print deposition accuracy and repeatability is more than adequate for 0201-chip printing. I don't think any print studies where done for 01005 chips yet. There are several other factors besides the machine that effect print quality such as, PWB design and fabrication, condition of solderpaste, proper formulation of solderpaste, properly designed and maintained stencil. Industry leaders in printers MPM and DEK may be on-the-job already doing print studies for 01005 chips and can supply you with papers on 0201-chip printing. Be careful of printing machine manufacturer's "specmanship" claims. Alignment accuracy and repeatability is different than actual print deposition. Print deposition (solderpaste on the board!) accuracy and repeatability is where the rubber meets the road. There are independent measurement instruments than will provide this data over 20, 100, or more boards.

01005 chips are used in medical implant and small hand-held devices.

Mydata Automation was picking and placing 01005 components onto sticky tape at this year's APEX 05 show in California back in Feb.

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Base

#35679

01005 (0402 in metric unit) printing accuracy | 21 July, 2005

(... so hard to resist... Rob is probably going to kick my derriere for this post...)

So was Assembleon... They first placed a very large QFP (think it was 208) and then placed a whole bunch of 01005's in between the leads. And to top it off they also did it the other way around: first put down an array of 01005's and then place the large QFP with it's leads in between the 01005's. Maybe we could ask all these Pick&Place vendors to start dispensing the required solder paste as well...

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Rob

#35681

01005 (0402 in metric unit) printing accuracy | 21 July, 2005

Nope, credit where credit's due - I'll let you have that one (Well, I do have Firday off, & I'm in a good mood!).

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Reflow Oven

Panasonic OEM Solutions