Engineered Components Company continues
to use tin-lead solder in the standard construction of our
products. The majority of our customers continue to request
our time tested, proven assembly methods using tin-lead
solder and we will continue to use those methods as our
standard production. The lead is the only of the RoHS banned
substances present in our standard products.
In an effort to satisfy the EU RoHS directive, Engineered
Components Company will produce most products with "No
Lead" or lead-free solder per request by customer.
These products will be free of all 6 banned substances.
The RoHS compliant products will be indicated by an "NL"
suffix to the standard part number.
Some Engineered Components Company products
(typically surface mount products) require the use of a
high temperature internal solder that is greater than 85%
lead by weight. These products may be considered RoHS compliant
by exemption 7a.
Engineered Components Company products are
of hybrid construction utilizing active I.C.'s, P.C. boards,
chip capacitors, resistors, wound inductors, and other components.
Internal solder connections are all performed by hand soldering
using SN63 eutectic solder with a melt temperature of 183
deg. C. The internal solder connections made to the external
leads use SN10 solder with a melt temperature range of 268-299
deg. C. All lead free products are hand soldered using Kestor's
K100LD solder with a melt temperature of 227 deg. C.
Our hybrid circuitry is encapsulated in
an epoxy resin compound that should not be exposed to temperatures
above 200 deg. C. (the epoxy resin glass transition temperature)
for more than a few seconds.
Care must be taken by the end user to not
expose our hybrid circuit products to temperatures above
200 deg. C. that could damage the epoxy resin, or remelt
and possibly reflow the internal solder connections.
We strongly recommend hand soldering all
of our products using a lower melt temperature solder such
as SN63. Our products with surface mount leads were designed
to allow customers to use a non-feedthrough product where
applications demanded it, but they should also be hand-soldered.