AUTOMATION
CONTROLS

Search
Discontinued
Products



RA Relays

RA Relays Cautions For Use

For general cautions for use, please refer to the "Relays Cautions For Use".

1.Coil operating power

Pure DC current should be applied to the coil. The wave form should be rectangular. 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 nominal operating voltage should be applied to the coil for more than 10 ms to set/reset the latching type relay.

2.Coil connection

When connecting coils, refer to the wiring diagram to prevent mis-operation or malfunction.

3.External magnetic field

Since RA relays are highly sensitive polarized relays, their characteristics will be affected by a strong external magnetic field. Avoid using the relay under that condition.

4.Cleaning

For automatic cleaning, the boiling method is recommended. Avoid ultrasonic cleaning which subjects the relays to high frequency vibrations, which may cause the contacts to stick.
It is recommended that alcoholic solvents be used.

5.Tape and reel packing

1.Tape dimensions

(General tolerance: ±0.1 ±.004)

2.X type, Z type

3.Dimensions of plastic reel

6.Soldering

Manual soldering shall be performed under following condition.

  • Tip temperature: 280°C to 300°C 536°F to 572°F.
  • Wattage: 30 to 60W
  • Soldering time: within 5s

In case of automatic soldering, the following conditions should be observed

1.Position of measuring temperature

2.IR (infrared reflow) soldering method

T1 = 150 to 180°C 302 to 356°F
T2 = 230°C 446°F and higher
T3 = Within 250°C 482°F
t1 = 60 to 120 sec.
t2 = Within 30 sec.

Temperature rise of relay itself may vary according to the mounting level or the heating method of reflow equipment.
Therefore, please set the temperature of soldering portion of relay terminal and the top surface of the relay case not to exceed the above mentioned soldering condition.
It is recommended to check the temperature rise of each portion under actual mounting condition before use.
The soldering earth shall be performed by manual soldering.

7.Conditions for operation, transport and storage conditions

1.Ambient temperature, humidity, and atmospheric pressure during usage, transport, and storage of the relay:

  • 1.Temperature: -40 to +70°C -40 to +158°F
  • 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 temperature is lower than 0°C 32°F. This causes problems such as sticking of movable parts or operational time lags.

4.Low temperature, low humidity environments

The plastic becomes brittle if the relay is exposed to a low temperature, low humidity environment for long periods of time.

8.Measuring method (50Ω type)

Connect connectors 1 and 2 respectively to PORT1 and PORT2.
Perform calibration using the 3.5 mm .138 inch calibration kit (HP85033C).

No. Product name Contents
1 HP 11857D 7mm Test port, Extension cable, (APC7connector)
2 HP 11533A Adapter, APC7-SMA (Male)

After calibration, connect the D.U.T board and measure.

D.U.T. board
Dimensions (mm inch)

SMA connector to be soldered D.U.T. board Dimensions
SMA connector to be soldered  
Material ; Glass PTFE
R-4737 (manufactured by our company)
Board thickness ; t = 0.8mm .031inch
Copper planting thickness ; 18μm (Double sided)
Connector (SMA type)
Product name ; R125 403 (RADIALL)
Insertion loss compensation ; The insertion loss of relay itself is given by subtracting the insertion loss of short-circuit the Com and the NC (or NO). (signal path and two connectors)

Return to top

CONTACT US
If you have any questions, please select the option below to contact us or find answers.
CONTACT BY EMAIL / PHONE FIND LOCAL OFFICE

Return to top

CONTACT US
BY EMAIL
Please click your area to select country or region




Requests to customers (Automation Control Components & Industrial Device) [Excluding specific product]
Requests to customers (Automation Control Components & Industrial Device) [For specific product]
Requests to customers (FA Sensors & Components [Excluding motors])
Requests to customers (Dedicated to industrial motors)