Stats

Locked Locked
Replies 4
Subscribers 164
Views 5909
Members are here 0

"conformal coated" ?

these words occured several times in my reading document, but the exact meaning is not very clear for me.
I take two sentences from the document:

1)see 6.1.2 for traces to be conformal coated;
2)Line voltage(120V): 0.250 inch minimum over surface, 0.125 inch minimum through air,
and 0.050 inch minimum when conformal coated;

thanks for explation of "conformal coated"!

Originally posted in cdnusers.org by watchdog1976

archive over 17 years ago

In the case of a printed circuit board, the conformal coating is the soldermask.

Originally posted in cdnusers.org by kp
Cancel
Vote Up 0 Vote Down

Cancel
archive over 17 years ago

KP, in fact, conformal coating is NOT soldermask. IPC defines conformal coating as an insulating protective covering that conforms to the configuration of the objects coated, which includes both the PCB as well as installed components. This could not include soldermask, as soldermask is only applied to the bare PCB fab. A conformal coating will normally be applied to a PCB assembly that will be exposed to more severe or harsh environment that would otherwise cause damage to a bare assembled board.

Watchdog, talk to your assembly vendor to see if they have the capability to process against this requirement.

Best of luck,
Andrew

Originally posted in cdnusers.org by annoonan
Cancel
Vote Up 0 Vote Down

Cancel
archive over 17 years ago

Conformal coating is "typically" like a thick varnish that coats the assembled PCB - as Andrew mentions, it's used as an extra protection that goes over the Assembled PCB, components, substrate including any soldermask. Typical applications that need conformal, that I've seen, are in automotive and marine industries - the PCB's in these environments suffer from harsher elements than your everyday PCB so need a little extra protecttion.

it's been a while since I worked with anything needing conformal coating so technolgy may have moved on a little since then

Originally posted in cdnusers.org by andrewjw
Cancel
Vote Up 0 Vote Down

Cancel
archive over 17 years ago

thanks for your help

Originally posted in cdnusers.org by watchdog1976
Cancel
Vote Up 0 Vote Down

Cancel

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.