CAUTIONS FOR USE
1. Input side
1) If the SSR control voltage contains
ripple, the peak of the ripple should not
exceed the maximum rated control
voltage, and the bottom of the ripple
should e xceed the minimum rated control
voltage.
2) A high noise surge voltage applied to
the SSR input circuit can cause
malfunction or permanent damage to the
device. If such a high surge is anticipated,
use C or R noise absorber in the input
circuit.
2. Output side
1) A high noise surge voltage applied to
the SSR load circuit can cause
malfunction or permanent damage to the
device. If such a high surge is anticipated,
use a varistor across the SSR output.
2) An SSR may malfunction if it is used
below the specified load. In such an
event, use a dummy resistor in parallel
with the load.
Load specification: Load current min. 120
mA
3. When the input terminals are
connected with reverse polarity
Reversing the polarity may cause
permanent damage to the device. Take
special care to avoid polarity reversal or
use a protection diode in the input circuit.
4. Cleaning solvents compatibility
Dip cleaning with an organic solvent is
recommended for removal of solder flux,
dust, etc. Select a cleaning solvent from
the following table. If ultrasonic cleaning
must be used, the se verity of f actors such
as frequency, output power and cleaning
solvent selected may cause loose wires
and other defects. Make sure these
conditions are correct before use. For
details, please consult us.
5. Others
1) W e recommend using a standard heat
sink (AQP801/AQP804).
2) Make sure that the terminals are wired
properly.
3) Be sure to take SSR layout and
ventilation into account. Installing a heat
source near another solid-state relay
could raise the ambient temperature.
4) If attached to a heat sink, use a heat-
conductive compound or similar coating
to improve cooling.
5) Handle the exterior and interior boxes
with care. Excessive vibration during
transport could warp the terminals or
damage the unit.
6) Storing the unit under extremely
adverse conditions could damage the
product’s appearance or impact
performance.
W e recommend that the unit be stored in
a location meeting the following
requirements:
Temperature: 5 to 30°C 41 to 86°F
Humidity: Max. 60% RH
Atmosphere: Should be free of sulfurous
acid and other toxic gasses, and relatively
free from dust.
Input voltage Valley ripple
voltage Peak ripple
voltage
4 to 6V DC Min. 4 V Max. 6 V
10 to 18V DC Min. 10 V Max. 18 V
18 to 28V DC Min. 18 V Max. 28 V
Peak ripple voltage
Valley ripple voltage
0 V
4
3
R
C
Control
voltage
source
1
2
Resistor
Load power
supply
1
2Varistor
4
3
Cleaning solvent Compatibility
(
❍
: Yes
✕
: No)
Chlorine-base • Trichlene
• Chloroethlene
❍
Adueous • Indusco
• Hollis
• Lonco Terg
❍
Alcohol-base • IPA
• Ethanol
❍
Others • Thinner
• Gasoline
✕
1
2
Load
Load power
supply
Ro (dummy resistor)
4
3
Thermal Design
SSRs used in high-reliability equipment
require careful thermal design. In
particular, junction temperature control
has a significant eff ect on de vice function
and life time. The rated load current for
board-mounting SSRs is defined as the
maximum current allowable at an ambient
temperature of 40
°
C 104°F (30
°
C 86°F)
and under natural cooling.