Subject: | |
From: | |
Reply To: | DesignerCouncil Mail Forum. |
Date: | Fri, 15 Aug 1997 12:08:37 -0400 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Hey JoAnn
Here is part of a list I use at our initial design meetings. I think Gary
Ferrari gave this to me. - Gary are you still lurking on this list?
1) DESIGN REVIEW
Determine performance class ( IPC 1, 2, or 3)
Electrical Considerations
Voltage min/max
Current min/max
Conductor resistance and temperature rise
High frequency circuits
Shielding (EMI) requirements
Division between analog and digital circuits
Board Dimensions
Length
Width
Shape
Thickness
Copper weight ( current-carrying capacity)
Component Dimensions
SMD thru-hole or mix
Height (including lead protrusion)
Hole sizes
Feasibility study
Total board area required
Track width
Spacing
Number of layers
Component Placement
Connectors
Switches
Special case parts
Define component to edge spacing
Routing
Determine critical nets
Heat dissipation/tolerance requirements
Shock/vibration requirements
Board retaining/extraction
Fabrication/manufacturing considerations
Board house capabilities
Plating requirements (gold/silver/tin)
Solder mask type
Delivery requirements
Component spacing (auto insertion?)
Testing
Test requirements
Test point locations
I'll work at getting this up (with more details) on my web site. anyone want
to add to this, send e-mail to me, not the list.......... [log in to unmask]
Larry Machak
Saminco Inc.
|
|
|