Compliance logo?

[N_Cook]

Anyone recognise and know meaning of the logo on a pcb overlay, USA 2007
date, the one next to the RU logo (included to show orientation). Maybe pcb
makers logo but usually a string of compliance logos seen at that posistion
on pcb overlays.
For those queezy about such things , you will need to engage script blocker
for this hosting site
http://diverse.4mg.com/compl_logo1.jpg

 

[Raveninghorde]

Anyone recognise and know meaning of the logo on a pcb overlay, USA 2007
date, the one next to the RU logo (included to show orientation). Maybe pcb
makers logo but usually a string of compliance logos seen at that posistion
on pcb overlays.
For those queezy about such things , you will need to engage script blocker
for this hosting site
http://diverse.4mg.com/compl_logo1.jpg

I don't recognise it but it will be the blank pcb manufacturers logo
and it will be registered with UL.

Often there will be a number starting with E as well which is the UL
file number. You can look this up on the UL website.

 

[N_Cook]

I don't recognise it but it will be the blank pcb manufacturers logo
and it will be registered with UL.

Often there will be a number starting with E as well which is the UL
file number. You can look this up on the UL website.

Thanks for that, there is an E...... number there, I'll look up

 

[Raveninghorde]

Thanks for that, there is an E...... number there, I'll look up

Check it here:

http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm

It will give you full details of their UL approvals. For example they
may be certified for double sided but not multilayer.

It will give you the company name and location as well.

 

[N_Cook]

Check it here:

http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm

It will give you full details of their UL approvals. For example they
may be certified for double sided but not multilayer.

It will give you the company name and location as well.

So from the E number
RUIHUA PRINTED CIRCUIT BOARD CO
FUZHOU, FUJIAN, CHINA
and under that number on this pcb is from the UL info the pcb sub-class type

I was hoping the symbol was for indicating that it was suitable for PbF
solder use but is probably the logo for that company, although I've not
found a company site with logo on it

They make 23 subclasses of board
involving 3 solder limit types

260 degree ,10 second
270, 10
288, 8
This board for the 270 /10 type - would that indicate for PbF use or would
that more likely be the 288 degree type one?

 

[Martin Riddle]

So from the E number
RUIHUA PRINTED CIRCUIT BOARD CO
FUZHOU, FUJIAN, CHINA
and under that number on this pcb is from the UL info the pcb
sub-class type

I was hoping the symbol was for indicating that it was suitable for
PbF
solder use but is probably the logo for that company, although I've
not
found a company site with logo on it

They make 23 subclasses of board
involving 3 solder limit types

260 degree ,10 second
270, 10
288, 8
This board for the 270 /10 type - would that indicate for PbF use or
would
that more likely be the 288 degree type one?

Yea, that’s the Company Logo.
Standard practice for a UL certified product is to have the MFG Name or
logo, UL file number, and mfg date etched in either the top or bottom
layer of all the boards in the product.
You may even see 94-V0 (flame rating for FR4) some where there too.

As for PBF, there are a few plating choices. Lead Free HASL, Immersion
Tin , Immersion silver, ENIG, and Gold plate ( over nickel)
Sunstone has a nice comparison list.
<http://www.sunstone.com/pcb-capabilities/lead-free-rohs/material-comparison.aspx>

Cheers

 

[N_Cook]

Yea, that's the Company Logo.
Standard practice for a UL certified product is to have the MFG Name or
logo, UL file number, and mfg date etched in either the top or bottom
layer of all the boards in the product.
You may even see 94-V0 (flame rating for FR4) some where there too.

As for PBF, there are a few plating choices. Lead Free HASL, Immersion
Tin , Immersion silver, ENIG, and Gold plate ( over nickel)
Sunstone has a nice comparison list.
<http://www.sunstone.com/pcb-capabilities/lead-free-rohs/material-comparison
..aspx>

Cheers

All I've found so far on temp-dwell time comparison and PbF is
http://www.pcbdesignschool.com/tag/t260/
comparing T260 and T288 but cannot find differentiation between 288-8 and
270-10

 

[N_Cook]

I'm thinking the 270 deg C - 10 sec criteria is more demanding than the 288
dec C/8 sec dwell ,as more heat in joules is involved, rather than the
higher temperature

 

[Spehro Pefhany]

...that is "UR", not "RU"...Underwriters Registered.

You must be looking at the wrong side of the board.

http://www.inertech.com/images/Ul_logo.gif

....and it indicates a "UL Recognized Component".



Best regards,
Spehro Pefhany