The kits for the Weller Micro Soldering Kit and Filtration Unit arrived. I used the pico/nano solder iron to replace an tiny resistor on a multilayer board.
The pico/nano iron is 40 W, and I used a 1.3 x 0.4 mm chisel tip. Lead free solder and the iron at 350° C
I need magnification to do this kind of work. When soldering, I used the magnifying glasses. The pcb photo was taken with a phone through the loupe:
The difference in size of the two irons and their tips:
With the nano iron, your hand is way closer to the solder point..
The tweezers:
The part with the tweezers plugs in / out. It's a click system - no screws or clamps.
Once plugged in, the tweezer part fits firm into the handle.
Soldering 0402 components with the nano/pico iron, and knife tip RTP 010 K MS (1.0 mm).
I put the multi-layer board on a pre-heater, because it has large ground planes that I have to solder components on.
result:
This is the best I 've ever done with an iron. 0402 is tiny.
I checked for mechanical strength and if the electric contact was made. All good.
This exercise is soldered with the nano iron, and the smallest tip of the set, conical 0.2 mm (RTP 002 C MS)
The photo shows an original area (left) of a Cisco board, and an identical area (inside the yellow lines) on the right that I've soldered.
I ignored component values, just put correct sized components on the pads.
