Electronics Forum: layer and registration (Page 1 of 12)

PCB layer to layer registration

Electronics Forum | Thu Jul 06 16:13:28 EDT 2017 | barryg

Hello everyone, I was curious if anyone knows what criteria there is for layer to layer registration. I have looked at ipc-600 and 601 and have not found anything or am missing something. We had a small qty. of pcbs sent to a customer and some inner

PCB layer to layer registration

Electronics Forum | Thu Jul 06 21:24:10 EDT 2017 | heros_electronics

Hi Jack, Haven't you done 100% E-test? there is a registration tolerance. CCD+/-2mil, Manual+/-4mils according to our manufacturing capacitites.

PCB layer to layer registration

Electronics Forum | Fri Jul 07 09:39:19 EDT 2017 | barryg

Our PCB supplier was supposed to be doing 100% ET but a few of his PCBs were not, and were not marked as tested, so now we are supersensitive. We received some PCBs from a new supplier and one of our inspectors noticed some shift. I was looking for s

PCB layer to layer registration

Electronics Forum | Thu Aug 31 09:12:54 EDT 2017 | hxamalia

Hello ALL Good day , it is Amalia from HX Circuit Technology Co.,Ltd in China, we are a prefessional PCB factory with many years. We are focusing on quick lead time for PCB with good service . please contact with me now ,thanks Email: amalia@hx-c

Shear strength and Copper/Tin Intermetalic layer

Electronics Forum | Mon Jul 06 20:32:34 EDT 1998 | Chiakl

Hi there, I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? Thank in advandce. rgs, chiakl

6 layer board and routing bga package

Electronics Forum | Thu Feb 11 07:24:40 EST 2016 | truewanderer

I'm planning to design the pcb of my project. The controller used is having 136 pins and the package is P-LFBGA. So i think i need to design a 6 layer board for better performance. I haven't designed a multi layer board before. So what are things tak

6 layer board and routing bga package

Electronics Forum | Fri Feb 19 05:08:40 EST 2016 | truewanderer

Thank you Tsvetan Usunov

Re: Shear strength and Copper/Tin Intermetalic layer

Electronics Forum | Thu Jul 09 21:04:50 EDT 1998 | Dave F

| Hi there, | I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? | | Thank in advandce. | rgs, | chiakl Chiakl

6 layer board and routing bga package

Electronics Forum | Tue Feb 16 13:58:02 EST 2016 | tsvetan

this document http://www.latticesemi.com/view_document?document_id=671 may be good start point but note that how to escape from the BGA is not big deal, how to route your filtering capcitors, grounding, impedance control lof you high speed signals ar

6 layer board and routing bga package

Electronics Forum | Fri Feb 19 05:14:04 EST 2016 | truewanderer

Hi, i have a confusion to read the dimension of BGA package from the datasheet. I have attached the datasheet below. Is this diameter of the ball 0.30mm or 0.15mm. I'm confused about the values given in the box. Whats meant by M, S, A and B. Please g

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