1
G
6
A
G6A
Low Signal Relay
World's Standard Model G6A!
• Resistant to electromagnetic interference,
enables high-density mounting.
• Impulse withstand voltage of 1,500V meets FCC
requirements.
• Gold-clad twin-contacts provide short contact
bounce in addition to its high contact reliability.
• A variety of products that cover a wide range of
use.
■Model Number Legend
■Ordering Information
●UL/C-UL Certified Models
Note: When ordering, add the rated coil voltage to the model number.
Example: G6A-274P-ST-US DC3
However, the notation of the coil voltage on the product case as well as on the packing will be marked as @@ VDC.
RoHS Compliant
Relay Function Classification Contact form Model Rated coil voltage (VDC) Minimum packing unit
Single-side Stable
Type
Standard
DPDT (2c)
G6A-274P-ST-US 3, 4.5, 5, 6, 9, 12, 24
25 pcs/tube
48
Low-sensitivity G6A-274P-ST40-US 3, 5, 6, 9, 12, 24
48
High-sensitivity G6A-274P-ST15-US 3, 5, 6, 9, 12, 24
48
Single-winding
Latching Type Standard G6AU-274P-ST-US 3, 4.5, 5, 6, 9, 12, 24
48
Double-winding
Latching Type
Standard G6AK-274P-ST-US 3, 4.5, 5, 6, 9, 12, 24
48
Low-sensitivity G6AK-274P-ST40-US 3, 5, 6, 9, 12, 24
48
■Application Examples
• Telecommunication equipment
• Security equipment
• Test & measurement equipment
G6A@-@@@@-@-@
1234567
5. Terminal Shape
P: PCB Terminals
6. Classification
7. Approved Standards
None : Standard
ST : Stand-off 0.64 mm
15 : High-sensitivity (150 mW)
40 : Low-sensitivity
(Single-side Stable: 400 mW
Double-winding Latching: 360 mW)
None : Standard
US : UL/C-UL
1. Relay Function
2. Contact Form
2: DPDT (2c)
3. Contact Type
7: Bifurcated crossbar Ag (Au-Alloy)
4. Protective Structure
4: Fully sealed
None : Single-side stable
U : Single-winding latching
K : Double-winding latching
Rated coil voltage
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G6A Low Signal Relay
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■Ratings
●Coil: Single-side Stable (Standard Models)
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
●Coil: Single-side Stable (Low-sensitivity Models)
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
●Coil: Single-side Stable (High-sensitivity Models)
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
●Coil: Single-winding Latching
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Must operate voltage
(V)
Must release voltage
(V)
Max. voltage
(V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 66.7 45
70% max. 10% min. 200%
(at 23°C)
Approx. 200
4.5 VDC 44.6 101
5 VDC 40.0 125
6 VDC 33.3 180
9 VDC 22.2 405
12 VDC 16.7 720
24 VDC 8.3 2,880
48 VDC 4.9 9,750 Approx. 235
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Must operate voltage
(V)
Must release voltage
(V)
Max. voltage
(V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 133.3 22.5
70% max. 10% min. 150%
(at 23°C) Approx. 400
5 VDC 80 62.5
6 VDC 66.7 90
9 VDC 44.3 203
12 VDC 33.3 360
24 VDC 16.7 1,440
48 VDC 8.3 5,760
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Must operate voltage
(V)
Must release voltage
(V)
Max. voltage
(V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 50 60
80% max. 10% min. 200%
(at 23°C) Approx. 150
4.5 VDC 33.3 135
5 VDC 30 167
6 VDC 25 240
9 VDC 16.7 540
12 VDC 12.5 960
24 VDC 6.3 3,840
48 VDC 3.2 15,000
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Set voltage (V) Reset voltage (V) Max. voltage (V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 33.7 89
70% max. 70% max. 200%
(at 23°C)
Approx. 100
5 VDC 20 250
6 VDC 16.7 360
9 VDC 11.1 810
12 VDC 8.3 1,440
24 VDC 4.2 5,760
48 VDC 2.5 19,000 Approx. 120
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G6A Low Signal Relay
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●Coil: Double-winding Latching (Standard Models)
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
●Coil: Double-winding Latching (Low-sensitivity Models)
Note1. The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.
2. Operating characteristics are measured at a coil temperature of 23°C.
3. The maximum voltage is the highest voltage that can be imposed on the relay coil.
●Contacts
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Set voltage (V) Reset voltage (V) Max. voltage (V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 66.7 45
70% max. 70% max. 200%
(at 23°C)
Approx. 200
4.5 VDC 40.2 112
Approx. 180
5 VDC 36 139
6 VDC 30 200
9 VDC 20 450
12 VDC 15 800
24 VDC 7.5 3,200
48 VDC 4.2 11,520 Approx. 200
Contact form Rated voltage Rated current
(mA)
Coil resistance
(Ω)
Set voltage (V) Reset voltage (V) Max. voltage (V) Power consumption
(mW)
% of rated voltage
DPDT (2c)
3 VDC 120 25
70% max. 70% max. 150%
(at 23°C) Approx. 360
4.5 VDC 79.9 56.3
5 VDC 72.5 69
6 VDC 60 100
9 VDC 40 225
12 VDC 30 400
24 VDC 15 1,600
48 VDC 7.5 6,400
Load
Item
Resistive load
Inductive load
Contact type Bifurcated crossbar
Contact material Ag (Au-Alloy) contact
Rated load 0.5 A at 125 VAC;
2 A at 30 VDC
0.3 A at 125 VAC;
1 A at 30 VDC
Rated carry current 3 A
Max. switching voltage 250 VAC, 220 VDC
Max. switching current 2 A 1 A
cosφ = 0.4;
L/R = 7 ms
()
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G6A Low Signal Relay
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■Characteristics
Note: The data shown above are initial values.
*1. The contact resistance was measured with 10 mA at 1 VDC with a voltage drop method.
*2. The insulation resistance was measured with a 500 VDC megohmmeter applied to the same parts as those used for checking the dielectric strength (except
between the set and reset coil).
*3. This value was measured at a switching frequency of 60 operations/min and the criterion of contact resistance is 50 Ω. This value may vary, depending on
switching frequency, operating conditions, expected reliability level of the relay, etc. It is always recommended to double-check relay suitability under actual load
conditions.
Item Classification Single-side Stable Single-winding Latching Double-winding Latching
Contact resistance *1 50 mΩ max.
Operate (set) time 5 ms max. 5 ms max.
Release (reset) time 3 ms max. 5 ms max.
Min. set/reset signal width −10 ms
Insulation resistance *2 1,000 MΩ min. (at 500 VDC); except for set-reset
Dielectric
strength
Between coil and contacts 1,000 VAC, 50/60 Hz for 1 min
Between contacts of the
same polarity 1,000 VAC, 50/60 Hz for 1 min
Between contacts of
different polarity 1,000 VAC, 50/60 Hz for 1 min
Between set and reset
coils −−250 VAC, 50/60 Hz for 1 min
Impulse withstand voltage 1,500 V (10 × 160 μs) (conforms to FCC Part 68)
Vibration
resistance
Destruction 10 to 55 to 10 Hz, 2.5 mm single amplitude (5 mm double amplitude)
Malfunction 10 to 55 to 10 Hz, 1.65 mm single amplitude (3.3 mm double amplitude)
Shock
resistance
Destruction 1,000 m/s2
Malfunction 500 m/s2300 m/s2
Durability Mechanical 100,000,000 operations min. (at 36,000 operations/hr)
Electrical 500,000 operations min. (at 1,800 operations/hr)
Failure rate (P level) *3 10 μA at 10 m VDC
Ambient operating temperature -40°C to 70°C (with no icing or no condenstion)
Ambient operating humidity 5% to 85%
Weight Approx. 3.5 g
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G6A Low Signal Relay
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■Engineering Data
Note: “Maximum voltage” is the maximum
voltage that can be applied to the Relay
coil.
Test Conditions: Shock is applied in ±X, ±Y, and ±Z directions three times each with and without energizing the Relays to check the
number of contact malfunctions.
●Maximum Switching Power ●Durability
●Ambient Temperature vs. Maximum
Coil Voltage
●Ambient Temperature vs. Must
Operate or Must Release Voltage
●Shock Malfunction
G6A-274P G6AK-274P
AC inductive
(cosφ = 0.4)
DC resistive
AC resistive
Switching current (A)
Switching voltage (V)
5.0
2.0
1.0
0.5
0.2
020 50 100 200 500
DC inductive
(L/R = 7 ms)
Durability (x104 operations)
Switching current (A)
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
10,000
5,000
3,000
1,000
500
300
100
50
30
10
5
3
125 VAC, resistive
125 VAC, inductive
30 VDC, inductive
30 VDC, resistive
Maximum coil voltage (%)
Ambient temperature (°C)
250
200
150
100
50
0
‑40 20 30 40 50 60 70 80 90 100
100, 150, 200 mW
360, 400 mW
110
100
80
60
40
20
0
-60 -40 -20 0 20 40 60 80 100 120
Ambient temperature (°C)
On the basis of rated voltage (%)
Sample: G6A-274P
Number of Relays: 10 pcs
max.
min.
max.
min.
Must operate voltage
Must release voltage
X
X
Z'
Z
Z
Z'
Shock direction
Unit: m/s2
Y
Y
Y'
Y'
X
X
X'
X'
1,000 1,000
1,000 1,000
200
400
600
800
800
600
400
200
1,000
1,000
De-energized
Energized
Sample: G6A-274P 5 VDC
Number of Relays: 10 pcs
Sample: G6AK-274P 5 VDC
Number of Relays: 10 pcs
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G6A Low Signal Relay
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*1. The tests were conducted at an ambient temperature of 23ºC.
*2. The contact resistance data are periodically measured reference values and are not values from each monitoring operation. Contact resistance values will vary
according to the switching frequency and operating environment, so be sure to check operation under the actual operating conditions before use.
●Electrical Durability Test *1 ●Contact Reliability Test *1, *2
●Mutual Magnetic Interference
G6A-274P G6A-274P
●External Magnetic Interference
G6AK-274P (Average value) G6AK-274P (Average value) G6AK-274P (Average value)
max.
min.
max.
min.
max.
max.
min.
min.
80
70
60
50
40
30
20
10
100
70
50
30
On the basis of rated voltage (%)
Contact resistance (mW)
Must operate voltage
1 3 5 500100503010
NO contact NC contact
Operating frequency (×10
4
operations)
Must release voltage
Sample: G6A-274P
Number of Relays: 10 pcs
Test conditions: 125 VAC 0.5 A (Resistive load)
Switching frequency: 1,800 operations/h
NO contact
NC contact
Sample: G6A-274P 5 VDC
Number of Relays: 10 pcs
Test conditions: Load 10 m VDC
10 mA (Resistive load)
Switching frequency:
7,200 operations/h
max.
min.
max.
min.
0 3 5 10 30 50 100 300 1,000 3,000
1,000
500
300
100
50
30
10
Operating frequency (×10
4
operations)
Contact resistance (mW)
+10
+5
0
−5
−10
Change rate on the
basis of initial value (%)
Change rate on the
basis of initial value (%)
Average value
Average value
TestInitial stage
+10
+5
0
−5
−10
TestInitial stage
Must operate voltage
Must release voltage
De-
energized
De-
energized
Sample
Energized
Energized
Sample
2.54 mm
X
X
X
X
2.54 mm
+10
+5
0
−5
−10
Change rate on the
basis of initial value (%)
Change rate on the
basis of initial value (%)
Test
+10
+5
0
−5
−10
Test
Sample
Sample
X
X
X
X
Must operate voltage
Must release voltage
Average value
Average value
Initial stage
Initial stage
Energized De-
energized
Sample: G6AK-274P 5 VDC
Number of Relays: 10 pcs
+20
+10
0
−10
−20
−4,000 −2,400 −800 0 800 2,400 4,000
−3,200 −1,600 1,600 3,200
Set voltage
Reset voltage
NS
SN
External magnetic field (A/m)
Rate of variability (%)
Sample: G6AK-274P 5 VDC
Number of Relays: 10 pcs
+20
+10
0
−10
−20
−4,000 −2,400 −800 0 800 2,400 4,000
External magnetic field (A/m)
−3,200 −1,600 1,600 3,200
Set voltage
Reset voltage
SN
NS
Rate of variability (%)
Sample: G6AK-274P 5 VDC
Number of Relays: 10 pcs
+20
+10
0
−10
−20
−4,000 −2,400 −800 0 800 2,400 4,000
External magnetic field (A/m)
Rate of variability (%)
−3,200 −1,600 1,600 3,200
SN
NS Set voltage
Reset voltage
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●High-frequency Characteristics
• Measurement Conditions
Note: The high-frequency characteristics data were measured using a dedicated circuit board and actual values will vary depending on the usage conditions. Check
the characteristics of the actual equipment being used.
*1. The tests were conducted at an ambient temperature of 23°C.
*2. High-frequency characteristics depend on the PCB to which the Relay is mounted. Always check these characteristics, including durability, in the actual machine
before use.
●Time distribution of Operating and Release/Set and Reset *1
G6A-274P G6AK-274P
●Bounce Time distribution of Operating and Release/Set and Reset *1
G6A-274P G6AK-274P
Sample: G6A-274P 5 VDC
Number of Relays: 50 pcs
100
80
60
40
20
01 2 3 4
Time (ms)
Number of contacts
Must operate time
Must release time
Set time
Reset time
Sample: G6AK-274P 5 VDC
Number of Relays: 50 pcs
60
40
20
0
1 2 3 4
Time (ms)
Number of contacts
Operating bounce time
Release bounce time
Sample: G6A-274P 5 VDC
Number of Relays: 50 pcs
60
40
20
00.5 1.0 1.5
Time (ms)
Number of contacts
Set bounce time
Reset bounce time
Sample: G6AK-274P 5 VDC
Number of Relays: 50 pcs
80
60
40
20
0 0.5 1.0
Number of contacts
Time (ms)
●High-frequency Characteristics
(Isolation) *1, *2
(Average value (initial))
●High-frequency Characteristics
(Insertion Loss) *1, *2
(Average value (initial))
●High-frequency Characteristics
(Return Loss, V.SWR) *1, *2
(Average value (initial))
Terminals which were not being measured were terminated with 50 Ω.
Measuring impedance: 50 Ω
HR 8501
Transmission
reflection
test-set
Terminator 50Ω
G6A-274P
HR 8505A
Network
analyzer HP
8501A
Storage
normalizer
RF
R
A
B
0
20
40
60
80
100 0 20 40 60 80 100
Frequency (MHz)
Isolation (dB)
Sample: G6A-274P
Number of Relays: 10 pcs
0
0.5
1.0
1.5
0 100 200 300 400 500 600
Frequency (MHz)
Sample: G6A-274P
Number of Relays: 10 pcs
Insertion loss (dB)
0
5
10
15
20
25 0 200 400 600 800 1,000
Frequency (MHz)
V.SWR
2.0
1.5
1.0
Sample: G6A-274P
Number of Relays: 10 pcs
V.SWR
Return loss
Return loss (dB)
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G6A Low Signal Relay
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■Dimensions
1468
16 13 11 9
+
−
* Average value
Eight, 1.0-dia. holes
Note: Orientation marks are indicated as follows:
2.54
(1.2)(1.2)
7.62
(1.2)
(1.2)
2.54
5.08
7.62 5.08
3.16
10.1max.
(9.9)*
8.4max.
(8.2)*
20.2max.
(20)*
0.64
0.3
0.6 7.62
PCB Mounting Holes
(BOTTOM VIEW)
Tolerance: ±0.1
Terminal Arrangement/
Internal Connections
(BOTTOM VIEW)
Note: Check carefully the
coil polarity of the
Relay.
Note: Each value has a tolerance of ±0.3 mm.
Single-side stable
G6A-274P-ST-US
G6A-274P-ST40-US
G6A-274P-ST15-US
1
S
46 8
16 13 11 9
R
+
−
+
−
−
* Average value Note: Orientation marks are indicated as follows:
10.1max.
(9.9)*
8.4max.
(8.2)*
20.2max.
(20)*
3.16
0.64
0.3
0.6 7.62
2.54
5.08
7.62 5.08 (1.2)(1.2)
7.62
(1.2)
(1.2)
2.54 Eight, 1.0-dia. holes
PCB Mounting Holes
(BOTTOM VIEW)
Tolerance: ±0.1
Terminal Arrangement/
Internal Connections
(BOTTOM VIEW)
Note: Check carefully the
coil polarity of the
Relay.
Note: Each value has a tolerance of ±0.3 mm.
Single-winding latching
G6AU-274P-ST-US
1468
16
SR
2
15 13 11 9
Ten, 1.0-dia. holes
+
−
+
−
* Average value Note: Orientation marks are indicated as follows:
2.54
5.085.08
2.54
(1.2)(1.2)
7.62
(1.2)
(1.2)
2.54
5.08
10.1max.
(9.9)*
8.4max.
(8.2)*
20.2max.
(20)*
3.16
0.3
0.6 7.62
0.64
PCB Mounting Holes
(BOTTOM VIEW)
Tolerance: ±0.1
Terminal Arrangement/
Internal Connections
(BOTTOM VIEW)
Note: Check carefully the
coil polarity of the
Relay.
Note: Each value has a tolerance of ±0.3 mm.
Double-winding latching
G6AK-274P-ST-US
G6AK-274P-ST40-US
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G6A Low Signal Relay
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■Approved Standards
■Precautions
●Please refer to “PCB Relays Common Precautions” for correct use.
●Long-term Continuously ON Contacts
Using the Relay in a circuit where the Relay will be ON
continuously for long periods (without switching) can lead to
unstable contacts because the heat generated by the coil itself
will affect the insulation, causing a film to develop on the contact
surfaces. We recommend using a latching relay
(magnetic-holding relay) in this kind of circuit. If a single-side
stable model must be used in this kind of circuit, we recommend
using a fail-safe circuit design that provides protection against
contact failure or coil burnout.
●Relay Handling
When washing the product after soldering the Relay to a PCB,
use a water-based solvent or alcohol-based solvent, and keep
the solvent temperature to less than 40°C. Do not put the Relay
in a cold cleaning bath immediately after soldering.
●Double-switching load in two poles
Double-switching in two poles as shown in the figure below, one
pole and two pole interval may become MBB (Make Before
Break) mechanically according to the timing of the point of
contact switching (By the short-circuit mode), and the
malfunction might be caused.
In such a circuit, direct electric switching should be avoided, and
concern for contact to be carried after the contact of Relay
absolutely switches in condition of no load.
To order the model that is certified for
the UL/C-UL standards, add “-US” to
the end of the model number.
UL/C-UL Recognized. (File No.E41515)
Correct Use
Classification Contact
form
Coil ratings
Model Contact ratings
Number of
test
operations
Single-side
stable
DPDT
(2c) 3 to 48 VDC
G6A-274P-ST-US
0.6 A, 125 VAC at 40°C
2 A, 30 VAC at 40°C
0.6 A, 110 VAC at 40°C
6,000
Latching G6AK-274P-ST-US
G6AU-274P-ST-US
Low-sensitivity G6A(K)-274P-ST40-US
High-sensitivity G6A-274P-ST15-US
Load
Contacts
+
−
• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.
• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad
systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious
influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or
equipment, and be sure to provide the system or equipment with double safety mechanisms.
OMRON Corporation
Electronic and Mechanical Components Company Contact: www.omron.com/ecb Cat. No. K020-E1-15
0118(0207)(O)
Note: Do not use this document to operate the Unit.