| This
data sheet has been prepared for customers undertaking
evaluation of this new material prior to general launching of
the
product.
There
is increasing legislative pressure on operators of electronics
manufacturing processes in the area of Health and Safety. This
demands tighter control of exposure to flux fumes, especially
rosin,
which has been associated with occupational asthma. Multicore
Ecosol 100 flux cored solder wire addresses this issue: it is
rosin-free.
Additionally, unlike some other rosin-free flux-cored solder
wires, it
has a low odour.
Although it exploits novel fluxing technology, Ecosol 100
flux-cored
solder wire retains all the advantages expected of Multicore
products
and will successfully solder all substrates commonly encountered
in
the electronics industry.
PRODUCT
RANGE
Multicore
Ecosol 100 cored wires are available in alloys conforming to
J-STD-006 and EN29453 or alloys conforming to similar national
or
international standards. A wide range of wire diameters is
available.
Alternative flux contents and alloys may be manufactured to
special
order.
RECOMMENDED
OPERATING CONDITIONS
Multicore
Ecosol 100 cored wire has been formulated as a "drop in
"
replacement for conventional cored wires, and, as such
modification
to standard good soldering practices should not be necessary.
However for those seeking guidance or clarification, the
following
outlines the typical practices that should be adopted.
Soldering
iron:
The optimum tip temperature and heat capacity
required for a hand soldering process is a function of the
design of
the iron and the task. However, unnecessarily high tip
temperatures
for
excessive times should be avoided and good results can be obtained
with a tip temperature of 340-420°C (650-780°F).
The tip of the soldering iron should be properly tinned and this
may
be achieved with Multicore Ecosol 100 cored wire.
However,
this depends on the initial condition of the tip. If it is in
poor
condition, it may be more effective to pre-tin the tip with
Multicore Tip
Tinner Cleaner TTC1.
Used correctly, this cleaner will leave the iron tip well tinned
and free
from any harmful residues that might be
transferred to the work piece. Where tip preparation is required
use
the following procedure:
(a) With the soldering iron at operating
temperature, tin the new tip
by gently rubbing the working surface over the TTC1.
(b) Wipe the tip on a clean, damp sponge to remove
any excess
solder.
(c) Re-tin the tip of the iron with Multicore
Ecosol 100 flux cored
wire.
It is not necessary to re-use Multicore TTC1 on iron tips once
they
have been correctly tinned
Soldering
Process: Multicore
Ecosol 100 flux cored wires contain a
carefully selected blend of colophony free components designed
to
provide minimal residues, high activity and good reliability
without
cleaning.
Some
adjustment to operator practices may be required
(especially if colophony free materials have not been used
before) to
gain maximum advantages from the product. However, the
principles
of normal hand soldering apply.
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The
process should be as follows:
(a) Apply the soldering iron tip to the work
surface. The iron tip
should contact both the base material and the lead at the same
time to heat both surfaces properly. The excess solder on the
iron tip will assist in the heating process by forming a larger
contact area between the base material and the lead. It should
take no more than a fraction of a second to heat both surfaces
adequately.
(b) At this time the Ecosol 100 flux cored wire
should be applied to
a part of the joint away from the soldering iron and allowed to
flow to form the joint fillet. This should take about 0.5
seconds.
Note:
If
the solder is applied directly to the soldering iron tip, the
flux
may be overheated and its effectiveness diminished. It may also
lead
to charring which will contaminate the soldering iron tip
Do not apply excessive solder to the joint, as this will leave
excess
flux residues on the surface.
(c)
Remove Ecosol 100 flux cored wire from the work piece and
then remove the heat source (iron tip).
The entire process should take from 0.5 to 1.5 seconds per
joint,
depending on the mass, iron temperature and tip configuration,
along
with
the solderability of the surfaces. Excessive times or
temperatures may
exhaust the flux before solder wetting has occurred and may
cause increased residue levels.
Cleaning:
Multicore
Ecosol 100 cored wires have been formulated to
leave a pale flux residue and to resist spitting. Cleaning will
not be
required in most situations but if necessary this is best
achieved using
Multicore Prozone in a semi-aqueous process with a final rinse
in
deionised water. Other proprietary solvent or semi-aqueous
processes including saponification may be suitable. Customers
are
advised to check the desired level of cleanliness is afforded by
their
chosen cleaning process.
TECHNICAL
SPECIFICATION
A
full description of test methods and detailed test results are
available on request.
Alloys:
The
alloys used for Multicore flux cored solder wires conform
to the purity requirements of the common national and
international
standards. A wide range of wire diameters is available
manufactured
to close dimensional tolerances.
Flux:
Multicore
Ecosol 100 solid flux is based on a blend of novel
active materials. It has a mild characteristic odour and leaves
a clear
pale residue.
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FLUX
PROPERTIES
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|
TEST
|
ECOSOL
105
|
| Acid value |
80mg KOH/g
|
| Halide
content |
0.5%
|
Cored
wire: Cored
wire is available in a range of standard flux
contents dependent upon customer demands.
HEALTH
and SAFETY
Warning:
The following information is for guidance only and users
must refer to the Material Safety Data Sheets relevant to
specific
Multicore Ecosol 100 products before use.
Fume
Hazards and Precautions:
Avoid excessive inhalation of the
flux fumes. These are irritating to the throat and respiratory
organs.
Suitable fume extraction equipment should be used to extract
flux
fumes away from operators.
Protection
and Hygiene: Lead
is harmful if absorbed into the body.
Eating, drinking or smoking should not be permitted in the work
area.
Hands should be washed with soap and water after handling
solder,
especially before eating or smoking.
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