Agile Export - Import
'via Blog this'
Pages
▼
Wednesday, February 27, 2013
Tuesday, February 26, 2013
Thursday, February 21, 2013
Paste Stencil Design Process Flow
Single PCB Design > Single PCB Gerbers > PCB
Fabricator > PCB Fabricator Array > Assembly Pallet Array >
Paste Stencil Array for Assembly Pallet > Gerbers to Assembly House >
Gerbers to Stencil House > Paste Stencil Pallet and Gerbers Back to Assembly
House > Paste Stencil Pallet Gerbers Onramp > Company Configuration Control.
The final paste stencil Gerbers (as modified by Assembly
House or Stencil House) which have been optimized for yield should be assigned
a drawing number and be checked into configuration control.
Tuesday, February 19, 2013
Thursday, February 14, 2013
Friday, February 8, 2013
PCB Design for Ethernet - ICS1893BK
Rabbit TN266
System Design Guidelines for Stellaris - Texas Instruments
Pulse_Layout Considerations v7.pdf
Key Points:
Remove planes under Ethernet Connector Transformer, ground plane maybe under the the Ethernet transformer if connector is shielded.
Keep TX and RX differential pairs separated ~ 0.050"
Avoid via stubs.
Chassis Ground.
System Design Guidelines for Stellaris - Texas Instruments
Pulse_Layout Considerations v7.pdf
Key Points:
Remove planes under Ethernet Connector Transformer, ground plane maybe under the the Ethernet transformer if connector is shielded.
Keep TX and RX differential pairs separated ~ 0.050"
Avoid via stubs.
Chassis Ground.
Thursday, February 7, 2013
Wednesday, February 6, 2013
3D Solder Paste Volume Inspection
50% of assembly defects are solder paste printing related.
Source: http://www.ipcoutlook.org/mart/52922F.shtml
Source: http://www.ipcoutlook.org/mart/52922F.shtml