General purpose relay 18F-4C 14pins with 4 contacts, 27.5*21.5*35mm
Description:
A relay switch can be divided into two parts: input and output. The
input section has a coil which generates magnetic field when a
small voltage from an electronic circuit is applied to it. This
voltage is called the operating voltage. Commonly used relays are
available in different configuration of operating voltages like 6V,
9V, 12V, 24V etc. The output section consists of contactors which
connect or disconnect mechanically. In a basic relay there are
three contactors: normally open (NO), normally closed (NC) and
common (COM). At no input state, the COM is connected to NC. When
the operating voltage is applied the relay coil gets energized and
the COM changes contact to NO. Different relay configurations are
available like SPST, SPDT, DPDT etc, which have different number of
changeover contacts. By using proper combination of contactors, the
electrical circuit can be switched on and off. Get inner details
about structure of a relay switch.
Features:
• Low coil power consumption
• High sensitivity.
• Small size, light weight.
• PC board mounting.
Applications:
Relays are used in electronics to switch a smaller current which in
turn will control larger current. They prevent the user to have
direct contact to the main device being controlled that might be
holding high voltage. These devices are comparable to a remote c
ontrol which is used to make a big electronic equipment work.
General data:
| Contact form | 4C |
| Insulation resistance | 100MΩMin at500VDC |
| Dielectric strength between open contacts | 1000VAC 50-60HZ(1 minute) |
| Dielectric strength between contacts and coil | 1500VAC 50-60HZ(1 minute) |
| Operate time | 25ms max. |
| Release time | 25ms max. |
| Ambient temperature | -40°C ~ +70°C |
| Shock resistance-Malfuction | 20G |
| Shock resistance-Destruction | 100G |
| Vibration resistance | 10-55Hz,1.5mm double amplitude |
| Ambient humidity | 40-85% RH |
| Weight | Approx 32g |
Coil data (@20°C)
| Rated Voltage(V) | DC coil 0.9W | AC coil 1.2VA |
| Coil Resistance Ω(±10%) | Max Operate Voltage(VDC) | Min Release Voltage(VDC) | Coil Resistance Ω(±10%) | Max Operate Voltage(VDC) | Min Release Voltage(VDC) |
| 5 | 32 | 3.75 | 0.5 | - | - | - |
| 6 | 40 | 4.5 | 0.6 | 10.5 | 4.8 | 1.8 |
| 12 | 160 | 9 | 1.2 | 43 | 9.6 | 3.6 |
| 24 | 650 | 18 | 2.4 | 160 | 19.2 | 7.2 |
| 48 | 2600 | 36 | 4.8 | 668 | 38.4 | 14.4 |
| 120 | - | - | - | 3900 | 96 | 36 |
| 240 | - | - | - | 12000 | 176 | 72 |
CAUTION:
1.The use of any coil voltage less than the rated coil voltage will
compromise the operation of the relay.
2.Pickup and release voltage are for test purposes only and are not
to be used as design criteria.
3.Unless otherwise stated, the rated coil voltage specified in coil
parameter tableshall be used for all tests and its application to
the relay
Outline dimension(mm):
PCB board layout and Wiring diagram:
