Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.
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If the board coated to
prevent the insulation the board
from deteriorating due corrosive
gases and high temperatures, note the
following.
Plastic sealed type relays can be
cleaned immersion. Use Freon- or
alcohol-based cleaning solvent.
• Solvent dam age case.) may
damage the case chemically
dissolve the epoxy and break the seal.P.g. hen
term inals are cut, breaking coil wire
and slight sticking the contacts may
occur due vibration the cutter.
If the relay and all components (e.
Type
Suitability
for Relays
Features
Epoxy-base Good
• Good electrical insulation. Use of
other cleaning solvents (e.
Depending the type, some coating
materials may have adverse affect
on relays.
Urethane-base Care
• Good electrical insulation, easy apply.
Doing may deteriorate the sealing
performance.
Although the environm entally sealed
type relay (plastic sealed type, etc.)
can cleaned, avoid immersing the
relay into cold liquid (such cleaning
solvent) ediately after soldering. Trichlene,
chloroethene, thinner, benzyl alcohol,
gasoline) may damage the relay case.g.
Do not use the silicone-base type.A.g.
67
. g
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° o
° °
o o
° o
O 0
° o
0 0
o O
0 °
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0 0
Do not clean dust-cover type relays
and flux-resistant type relays by
immersion.
xylene, toluene, MEK, I.
• Cleaning with the boiling method is
recommended. Avoid ultrasonic
cleaning relays.
7. Use ultrasonic
cleaning may cause breaks the coil
or slight sticking the contacts due to
the ultrasonic energy. heck before use.
ICs) are coated, sure to
carefully check the flexibility the
coating material.
Silicone-base Good
• Silicone gas becom the cause contact failure.
• not cut the terminals. Or,
mount the relay after coating.Excerpts from Technical Information
5. The solder may peel
off from therm stress. The solder may peel
off from therm stress. with brush), careless cleaning
may cause cleaning solvent to
penetrate the relay.
If the relay and all com ponents (e.
• Although slightly difficult apply, does not affect relay contacts. Furthermore, solvents (e.
6.
Do not coat dust-cover type relays and
flux-resistant type relays, since the
coating material may penetrate the
relay and cause contact failure.
Select coating materials carefully.
ICs) are coated, sure to
carefully check the flexibility the
coating material. Even only the bottom
surface the board cleaned
(e.g.g. lin g
A tic g
Immediate air cooling recommend to
prevent deterioration the relay and
surrounding parts due soldering
heat
