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.
• Cleaning with the boiling method is
recommended. g
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Do not clean dust-cover type relays
and flux-resistant type relays by
immersion.)
can cleaned, avoid immersing the
relay into cold liquid (such cleaning
solvent) ediately after soldering. Furthermore, solvents (e. tin g
If the board coated to
prevent the insulation the board
from deteriorating due corrosive
gases and high temperatures, note the
following.Excerpts from Technical Information
5. Trichlene,
chloroethene, thinner, benzyl alcohol,
gasoline) may damage the relay case.g.
• not cut the terminals.
Do not coat dust-cover type relays and
flux-resistant type relays, since the
coating material may penetrate the
relay and cause contact failure.
Although the environm entally sealed
type relay (plastic sealed type, etc.P. lin g
A tic g
Immediate air cooling recommend to
prevent deterioration the relay and
surrounding parts due soldering
heat.
ICs) are coated, sure to
carefully check the flexibility the
coating material.
xylene, toluene, MEK, I.
• Although slightly difficult apply, does not affect relay contacts. Or,
mount the relay after coating.
If the relay and all components (e.g. hen
term inals are cut, breaking coil wire
and slight sticking the contacts may
occur due vibration the cutter. Use Freon- or
alcohol-based cleaning solvent. The solder may peel
off from therm stress.
Type
Suitability
for Relays
Features
Epoxy-base Good
• Good electrical insulation.
7. Use ultrasonic
cleaning may cause breaks the coil
or slight sticking the contacts due to
the ultrasonic energy.g.A.g. The solder may peel
off from therm stress.
67
.
Do not use the silicone-base type. heck before use.
Select coating materials carefully. with brush), careless cleaning
may cause cleaning solvent to
penetrate the relay.
Plastic sealed type relays can be
cleaned immersion.
Doing may deteriorate the sealing
performance.
ICs) are coated, sure to
carefully check the flexibility the
coating material. Avoid ultrasonic
cleaning relays.
Urethane-base Care
• Good electrical insulation, easy apply.
6. Even only the bottom
surface the board cleaned
(e.g.
If the relay and all com ponents (e.
Silicone-base Good
• Silicone gas becom the cause contact failure.
• Solvent dam age case. Use of
other cleaning solvents (e.
Depending the type, some coating
materials may have adverse affect
on relays.) may
damage the case chemically
dissolve the epoxy and break the seal
