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Solder
Using the proper solder is as important as using the proper
iron, and there are many solders to choose among.
electronics assembly, separate paste or liquid flux is not
used.
Rather, . a solder with a "core" of rosin (or resin)
base flux is Used.
of the solder) should be sufficient.
solders using an acid flux.
unless a can of flux says"rosin" you may safely assume it
is an acid flux.
ering where the surfaces are not as clean as those in elec
tronic assembly.
damage a printed circuit.
Also very important is the ratio of tin to lead used in the
solder.
Best to use is 63% tin, 37% lead, called 63/37 or
eutectic.
Much more common is 60/40, which is still a very
good solder.
Avoid using 50/50 or 40/60, even though they're
a little cheaper.
while the 63/37 solidifies almost instantaneously, making
"cold solder joints" very much less likely.
Also important is the gauge (or diameter) of the solder.
For fine electronics work a fine gauge should be used,
such as #20 (from #19 to #22 is OK).
solder is easy to obtain from any local hobbyist electronics
outlet or TV repair shop.
brands you can count on for good results.
cluded in the kit should be sufficient.
it is not, and you cannot obtain the proper solder locally,
DO NOT USE any substitutes.
can be detained from IMSAI.
Soldering Technique
For a joint to solder correctly, enough heat must be applied
so that both pieces of metal get hot enough to melt the solder.
The tip of the iron should be applied so .that it touches both
the wire and the foil pad on the board.
solder should then be touched to the junction of the iron,
lead, and pad, so that a small amount melts and "wets" the
joint (flows smoothly on. both the lead and pad). As soon
as the joint has wet, the iron can be removed, and the joint
inspected immediately.
the key to successful soldering.
applied, watch the joint carefully.
This flux (contained in the hollow center
(Or any cans of acid flux -
Acid fluxes are used for mechanical sold
They are corrosive and will typically
The higher-lead ratios solidify gradually,
ERSIN Multicore or KESTER are two
More solder of the proper type
Careful inspection of each joint is
IMSAI 8080 System
General Assembly Notes
Absolutely avoid any
Again, the correct
The solder in
If for some reason
The end of the
While the solder is being
You should be able to
In normal
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