We have Hot Air Leveled CEM1 panels with silver jumpers using lead free
solder without any problems. The jumpers will need to be over printed with a
solder mask prior to leveling.
-----Original Message-----
From: Baski Devre [mailto:[log in to unmask]]
Sent: 21 June 2005 11:20 AM
To: [log in to unmask]
Subject: [TN] Silver printing with lead free HAL
Dear Technetters
We have a production project to print silver jumper on the PCB produced with
CEM1 subtrate and will be applied lead free HAL. As it is known that the
temperature of lead free HAL operation is between 270-280 C degree. We want
learn that how much the silver we are going to print will be affected by
this process. We are waiting for your kind interpretation and if available
wating for your alternatives to this. If any one has experience with the
silver printing in conmpliance with RoHS or if anyone applied HAL to silver
printed PCBs can share his/her experience and observations with us Thank you
all for your incomming assistance
Best regards
Yusuf GOMEC
Product Quality Engineer
BASKI DEVRE SAN. ve TIC. LTD. STI.
Ceyhan Sk. No:10 81490 Pendik-Istanbul-Turkey
Tel:0090 216 3901036(4 Line)/4836560(4 Line)
Fax:0090 216 3544941/4913269
Gsm:0090 533 6579897/7480014
Internet: www.baskidevre.com.tr
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