SFS
–6–
ASCTB119E 201507-T
NOTES
1. For cautions for use, please read “GENERAL
APPLICATION GUIDELINES”.
2. Coil operating power
Pure DC current should be applied to the coil. If it includes
ripple, the ripple factor should be less than 5%. However, check
it with the actual circuit since the characteristics may be slightly
different.
The wave form should be rectangular.
3. Coil connection
When connecting coils, refer to the wiring diagram to prevent
mis-operation or malfunction.
4. Cleaning
This relay is not sealed, therefore, immersion may cause failure.
Be careful that flux does not overflow onto the PC board or
penetrate inside the relay.
5. Soldering
When using automatic soldering, the following conditions are
recommended
1) Preheating: 120°C 248°F, within 120 Sec (PC board solder
surface)
2) Soldering: 260°C±5°C 500°F±41°F, within 6 Sec
6. Other
1) If the relay has been dropped, the appearance and
characteristics should always be checked before use.
2) The switching lifetime is defined under the standard test
condition specified in the JIS* C 5442-1996 standard
(temperature 15 to 35°C 59 to 95°F, humidity 25 to 75%). Check
this with the actual product as it is affected by the coil driving
circuit, load type, activation frequency, activation phase, ambient
conditions and other factors.
Also, be especially careful with loads such as those listed below.
(1) When used for AC load-operation and the operating phase is
synchronous. Rocking and fusing can easily occur due to
contact shifting.
(2) During high frequency on/off operation with certain loads,
arcing may occur at the contacts. This can cause fusion to
Oxygen and Nitrogen gas in the air creating Nitric Acid (HNO
3)
which can cause corrosion to the contacts.
Please see the following countermeasure examples:
1. Incorporate an arc-extinguishing circuit.
2. Lower the operating frequency
3. Lower the ambient humidity
3) For secure operations, nominal coil voltage should be applied.
In addition, please note that pick-up and drop-out voltage will
vary according to the ambient temperature and operating
conditions.
4) Heat, smoke, and/or fire may occur if the relay is used outside
the allowable ranges for the coil ratings, contact ratings,
operating cycle lifetime, and other specifications. Therefore, do
not use the relay if these ratings are exceeded. Also, make sure
that the relay is wired correctly.
5) Incorrect wiring may cause false operation or generate heat or
flames.
6) Check the ambient conditions when storing or transporting
the relays and devices containing the relays. Freezing or
condensation may occur in the relay causing damage. Avoid
exposing the relays to heavy loads, or strong shock and
vibration.
7. Usage, transport and storage conditions
1) Ambient temperature, humidity, and atmospheric pressure
during usage, transport, and storage of the relay:
(1) Temperature: –40 to +85°C –40 to +185°F
(When the temperature is 70 to 85°C 158 to 185°F, reduce the 6
A max. switching current by 0.1 A/°C.)
(2) Humidity: 5 to 85% RH (Avoid freezing and condensation.)
The humidity range varies with the temperature. Use within the
range indicated in the graph below.
(3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for usage, transport, and
storage
2) Condensation
Condensation forms when there is a sudden change in
temperature under high temperature and high humidity
conditions. Condensation will cause deterioration of the relay
insulation.
3) Freezing
Condensation or other moisture may freeze on the relay when
the temperatures is lower than 0°C 32°F. This causes problems
such as sticking of movable parts or operational time lags.
4) Low temperature and low humidity
At low temperature, low humidity environments, the plastic
becomes brittle.
Please note corrections.
8. Please connect DC coil types with LED and built-in diode
correctly by verifying the coil polarity (“+” and “–”).
Connecting with reverse polarity will cause the LED not to
light and damage the built-in diode due to its specification.
85
5
Humidity, %RH
Tolerance range
(Avoid
condensation
when used at
temperatures
higher than
0°C 32°F)
(Avoid freezing
when used at
temperatures
lower than
0°C 32°F)
850–40
+185+32–40
Temperature, °C °F
