Apr 22, 2007 #1 7 7rots51 Advanced Member level 4 Joined May 17, 2002 Messages 1,183 Helped 25 Reputation 50 Reaction score 12 Trophy points 1,318 Activity points 9,636 Hello I have some RF ICs with QFN package ,it have no lead/pin, how can I solder them?Is there any way to solder it ?(without automatic machines, by hand and some tools)
Hello I have some RF ICs with QFN package ,it have no lead/pin, how can I solder them?Is there any way to solder it ?(without automatic machines, by hand and some tools)
Apr 22, 2007 #2 R rfmw Advanced Member level 2 Joined May 10, 2001 Messages 543 Helped 93 Reputation 190 Reaction score 51 Trophy points 1,308 Activity points 3,979 Re: QFN mountage? Steady hand, peaceful mind, proper soldering tools (tips), thin solder wire, flux. The pictures show QFN-16, operating from DC-20GHz (digital design) on a 1mm-thick FR-4 PCB.
Re: QFN mountage? Steady hand, peaceful mind, proper soldering tools (tips), thin solder wire, flux. The pictures show QFN-16, operating from DC-20GHz (digital design) on a 1mm-thick FR-4 PCB.
Apr 22, 2007 #3 7 7rots51 Advanced Member level 4 Joined May 17, 2002 Messages 1,183 Helped 25 Reputation 50 Reaction score 12 Trophy points 1,318 Activity points 9,636 Re: QFN mountage? thanks Have FLUX any effect on RF performance of the IC? how I solder the GND plate under the IC in QFN package?
Re: QFN mountage? thanks Have FLUX any effect on RF performance of the IC? how I solder the GND plate under the IC in QFN package?
Apr 23, 2007 #4 R rfmw Advanced Member level 2 Joined May 10, 2001 Messages 543 Helped 93 Reputation 190 Reaction score 51 Trophy points 1,308 Activity points 3,979 Re: QFN mountage? Don't know about flux effect and it seemed to me that it doesn't have great effect on rf on my boards. I've soldered the exposed pad from the under side on the pcb. Is there another way?
Re: QFN mountage? Don't know about flux effect and it seemed to me that it doesn't have great effect on rf on my boards. I've soldered the exposed pad from the under side on the pcb. Is there another way?
Apr 23, 2007 #5 7 7rots51 Advanced Member level 4 Joined May 17, 2002 Messages 1,183 Helped 25 Reputation 50 Reaction score 12 Trophy points 1,318 Activity points 9,636 Re: QFN mountage? is there any soldering station (with manual control) to solder QFN Ics with reflow soldering. Is there any QFN stencil available in market ? how to print solder mask on it? is there any solder point with low temp point?(200 degree C)?
Re: QFN mountage? is there any soldering station (with manual control) to solder QFN Ics with reflow soldering. Is there any QFN stencil available in market ? how to print solder mask on it? is there any solder point with low temp point?(200 degree C)?