Relay Basics 2-6 MOS FET Relays | OMRON - Korea
MOS FET Relays
MOS FET relays are semiconductor relays that use MOS FET for their outputs.
Non-contact relays, mainly used for switching and connecting signals, are used in a wide range of applications, including semiconductor test equipment, measuring instruments, and security equipment.
|Ultra-small and lightweight||SSOP, USOP and other new ultra-small packaging VSON are emerging, which contributes to miniaturization of the entire device.|
|Low drive current||The drive current is about 2 to 15mA under the recommended operating condition (normal). We also have a minimum of 0.2 mA products which contribute to energy saving of whole device.|
|Longer-life||Our MOS FET relays have a non-contact structure using an optical signal transmission method. We have achieved long durability without deterioration of life due to contact friction.|
|small leakage current||Because of its high resistance to external surges and no added snubber circuit, the leakage current is extremely small, typically 1 nA or less in the off state. (G3VM-□GR□,-□LR□,-□PR□,-□UR□)|
|superior impact resistance||Since the internal parts are completely molded and there are no mechanical parts such as movable parts, they are excellent in shock resistance and vibration resistance.|
|Quiet sound||Since there is no switching noise caused by metal contacts unlike machine relays, it contributes to noise reduction of device.|
|High insulation||Since there is no switching noise caused by metal contacts unlike machine relays, they contribute to noise reduction of device.|
|Precise control of small analog signals||Since the dead band is extremely small compared to a triac etc, the input waveform of a small analog signal is converted into an output waveform with little distortion.|
Product map by MOS FET relay type
Basic structures and operating of MOS FET relays
MOS FET relays consist of following three chips:
- LED chips
- PDA (photodiode array) chip
- MOS FET chips
MOS FET relays operate according to the following principles.
- The LED lights when the current flows to the input side.
- The light from the LED is received by the photodiode array, which generates electricity to convert the light back to a voltage
- This voltage passes through the control circuit to become the gate voltage to drive the MOS FET.
- Amusement equipment
paper money discrimination units, game ball and medal lending machines (interposed machine), IT equipmentApplicationstatus output, various signals