Datasheet
MOS FET Relays: G3VM Features Application Examples
MOS FET Relay Application Examples
G3VM Relays will help you downsize and reduce the energy consumption of a wide range of equipment.
Structure and operational principle of MOS FET relays

Smoke detector/Home security panel/PIR/
Video intercom systems
Status output
Signal output
Switching power supply
of small solenoid valve,
small light
External output
1b (SPST-NC)
Ultrasensitive
High curren
High dielectric
strength
Function Features / Recommended products
G3VM-61VY3
G3VM -351V Y
Page
68
82
147
147
68
82
68
127
121
121
121
68
82
68
82
G3VM- 61G2
Security Equipment
G3VM-63G
G3VM-353G
G3VM - 61VR
G3VM-61CR1/FR1
G3VM-201CR/FR
G3VM- 601CR /FR
G3VM-61AY1/DY1
G3VM-351AY1/DY1

Modems, Fax machines, network devices, and
PBX transfer devices
Short-circuit line
switching
Line switching
General
purpose
1b (SPST-NC)
Function Features / Recommended products
G3VM-61VY3
G3VM -351V Y
Communication Equipment
G3VM-63G
G3VM-353G

Machine tool/Customized power
supply/Factory automation
(PLC/Thermostat/Timer)
Status output
Signal output
Switching power supply
of small solenoid valve,
small motor
External output
General
purpose
High current
High dielectric
strength
Function Features / Recommended products
G3VM-61VY3
G3VM - 61A1/D1
G3VM -351V Y
G3VM - 351A /D
Page
68
62
82
62
127
121
121
121
FA/Industrial Equipment
G3VM - 61VR
G3VM-61CR1/FR1
G3VM-201CR/FR
G3VM- 601CR /FR
G3VM-61AY1/DY1
G3VM-351AY1/DY1

Semi-conductor test equipment(ATE)/
Semi-conductor test equipment Interface board/
Tester for cars/PXI module/Data logger/ I/O board
Switching
test signal
Switching
power supply
Low C

R
Small and
High-load-voltage
High current
High current
Function Page
G3VM-21UR1/UR10/UR11
G3VM-41UR10/UR11/UR12
G3VM - 41QR10
G3VM -51UR
G3VM - 61QR
190
195
200
195
200
213
143
143
Test & Measurement Equipment
G3VM -61UR1
G3VM - 31QR
G3VM - 31QR
G3VM-61QR2
G3VM -101QR1

Currency Sensing Modules
Coin dispenser / Information system
Status output
Signal output
General
purpose
General
purpose
1b (SPST-NC)
Function Features / Recommended products
G3VM-61VY3
G3VM -351V Y
G3VM-63G
G3VM-353G
Page
68
82
68
82
Amusement Equipment
Medical Equipment Office automation/AV Equipment Broadcasting Equipment
There are many other usages beyond the above applications.

BMS’s (business management systems), power meters,
smart meters, secondary power supplies, and
photovoltaic systems
External communications
Charge voltage monitoring
Storage battery charging
High dielectric
strength
High current
Function Features / Recommended products
G3VM-61AY1/DY1
G3VM-351AY1/DY1
G3VM-601AY1/DY1
Page
147
68
82
121
G3VM-61VY3
G3VM -351V Y
Energy-related Equipment
G3VM-61CR1/FR1
Page
Features / Recommended products
General
purpose
Ultra Small Size and Weight
In addition to the SSOP and USOP, we have introduced the ultra-compact
VSON and S-VSON packages, contributing to downsizing of equipment.
High Insulation
MOS FET relays offer great I/O isolation due to its operational principle. It
turns the voltage into the light and transfers by the light signal; Therefore
input and output are isolated. The standard models offer 2,500 Vrms
between input and output. Superior 5,000 VAC products are also available.
3,750 VAC products have also been added to the SOP package series.
Silent operation
As MOS FET Relays do not have mechanical contacts, by using a MOS FET
instead of an electromechanical relay, it is possible to eliminate switching
noise in your applications.
High-speed switching
Comparing with the switching time of 3 to 5 ms of a mechanical relay, its
switching time is shortened to 0.2 ms(SSOP, USOP, VSON). Achieving quick
response performance.
Small leakage current
Can withstand external surge current without addition of snubber circuit.
Under normal conditions, the typical leakage current is about 1 nA or below.
Excellent shock resistance
All the internal parts use casting method, and there is no movable parts in it,
so it has excellent shock and vibration resistance.
Control the micro analog signal correctly
Comparing with the triac, MOS FET greatly reduces the dead zone. The input
waveform of micro analog signal does not suffer distortion as it does with a
triac and is basically converted into output waveform without distortion.
Low driving current
Realizing energy saving with standard driving current of 2 to 15mA.
Ultrasensitive models are also available featuring Drive Currents as low as
0.2 mA (max).
Long operating life
MOS FET Relays use light signal instead of moveable contacts; avoiding
reduction of life caused by contact wear, substantially increasing operational
life.
MOS FET relay consists of the following three components:
(1) LED (light emitting diode)
(2) Photodiode dome array (PDA)
(3) MOS FET
(
1
) The LED lights up when the current is connected at the input side.
(
2
) The light sent by the LED will be converted into voltage when it is
received by the Photodiode dome array.
(
3
) This voltage will be the gate voltage to drive the MOS FET via control
circuit.
[Internal structure]
[Operational Principle]
(
1
)
(
2
)
(
3
)
(1) LED chip
Wire
Lead frame
Silicone Resin
PDA chip
Epoxy Resin
(2) PDA chip(3) MOS FET chip
Control
Circuit
Input
LED
Output
76
DIP
SOP
SSOP
USOP
VSON
DIP
SOP
SSOP
USOP
VSON
Introduction
MOS FET Relays: G3VM Features
Introduction
MOS FET Relays: G3VM Features
General-purpose
Small and High-
dielectric-strength
High-dielectric-
strength Current-limiting
Low-output-capacitance
and Low-ON-resistance
Small and High-
load-voltage
Certified Models with
Standards Certification
General-purpose Small and High-
dielectric-strength
High-dielectric-
strength
Current-limiting
Low-output-capacitance
and Low-ON-resistance
Small and High-
load-voltage
Certified Models with
Standards Certification
High-load-voltage
High-load-voltage
Multi-contact-pair
(2a, 2b, and 1a1b)
Multi-contact-pair
(2a, 2b, and 1a1b)
High-current and
Low-ON-resistance
High-current and
Low-ON-resistance