I have recently purchased one of these kits:
https://www.banggood.com/100KHz-1_7...Radio-Frequency-Modulation-Kit-p-1120249.html
There is a link to assembly instructions, just at the bottom of the "Specifics" section. ( https://img.banggood.com/file/products/20170109215514SKU472022.pdf )
I have done most of the soldering, the caps, SMD passives, link wires etc. have been no problem, just have the transformer left to make and solder the wires to Q+ and Q-, connections 4 & 5 respectively, of the RTL2832U QFN48 6x6. The Q+ & Q- part is what I am looking for advice on.
As the QFN is so small and I do not have a stereo microscope, I imagine that I will be suffering from solder bridges when trying to make connections to this device with a soldering iron, along with moving the fine wires when trying to remove bridges. Therefore, what I am thinking of doing, is to Kapton tape the surrounding area, tin the wires and trim the ends, then tape the wires on top of the QFN with some Kapton and form the wires with tweezers so that they touch the connections, apply flux and then try to use hot air to make a joint. I have a USB microscope to aid in this process.
For those who work with such small devices on a regular basis, would you think this approach will be suitable, or can you offer a better solution. I do not have a small enough iron tip and I don't think my hand is steady enough if I did have one.
Thanks in advance.
https://www.banggood.com/100KHz-1_7...Radio-Frequency-Modulation-Kit-p-1120249.html
There is a link to assembly instructions, just at the bottom of the "Specifics" section. ( https://img.banggood.com/file/products/20170109215514SKU472022.pdf )
I have done most of the soldering, the caps, SMD passives, link wires etc. have been no problem, just have the transformer left to make and solder the wires to Q+ and Q-, connections 4 & 5 respectively, of the RTL2832U QFN48 6x6. The Q+ & Q- part is what I am looking for advice on.
As the QFN is so small and I do not have a stereo microscope, I imagine that I will be suffering from solder bridges when trying to make connections to this device with a soldering iron, along with moving the fine wires when trying to remove bridges. Therefore, what I am thinking of doing, is to Kapton tape the surrounding area, tin the wires and trim the ends, then tape the wires on top of the QFN with some Kapton and form the wires with tweezers so that they touch the connections, apply flux and then try to use hot air to make a joint. I have a USB microscope to aid in this process.
For those who work with such small devices on a regular basis, would you think this approach will be suitable, or can you offer a better solution. I do not have a small enough iron tip and I don't think my hand is steady enough if I did have one.
Thanks in advance.