1
ds_61411_en_sfy: 160117D
ORDERING INFORMATION
Compact Relay Family
with Forcibly
Guided Contacts
SF-Y RELAYS
4-pole
(2 Form A 2 Form B, 3 Form A 1 Form B)
6-pole
(4 Form A 2 Form B, 5 Form A 1 Form B)
FEATURES
1. Forcibly guided contact structure
Relay complies with IEC 61810-3,
Type A
Equipped with forcibly guided
contact structure that enables
detection of contact welding and
construction of safety circuit.
2. Small size
3. Different contact configurations:
4. Low profile: 14.5 mm .571 inch
5. Insulation according to EN 60664-1:
Overvoltage category III, Pollution
degree 2, 250V AC
Reinforced insulation:
Clearance and creepage 5.5 mm .217
inch
(between all contacts and between
contact NO4 and coil)
Basic insulation:
Clearance 3 mm .118 inch and
creepage 4 mm .157 inch
(between all contacts and between
contact NC3 and coil)
TYPICAL APPLICATIONS
1. Emergency stop switches
2. Machine safety engineering
3. Safety control units
4. Automation technology
5. Elevators
6. Escalators
7. Overcurrent protection with monitor
contact
Type L W H (mm inch)
2 Form A 2 Form B,
3 Form A 1 Form B 31.0 28.6 14.5
1.220 1.126 .571
4 Form A 2 Form B,
5 Form A 1 Form B 39.0 28.6 14.5
1.535 1.126 .571
SFY
Nominal coil voltage
DC 5, 12, 18, 21, 24V
Contact arrangement
2: 2 Form A 2 Form B
3: 3 Form A 1 Form B
4: 4 Form A 2 Form B
5: 5 Form A 1 Form B
Notes: Please consult us about other coil voltages.
Gold-clad contact type available on request.
SF-Y
2ds_61411_en_sfy: 160117D
TYPES
Standard packing: Tube 20 pcs.
RATING
1. Coil data
Contact arrangement Nominal coil voltage Part No.
4-pole
2 Form A 2 Form B
5 V DC SFY2-DC5V
12 V DC SFY2-DC12V
18 V DC SFY2-DC18V
21 V DC SFY2-DC21V
24 V DC SFY2-DC24V
3 Form A 1 Form B
5 V DC SFY3-DC5V
12 V DC SFY3-DC12V
18 V DC SFY3-DC18V
21 V DC SFY3-DC21V
24 V DC SFY3-DC24V
6-pole
4 Form A 2 Form B
5 V DC SFY4-DC5V
12 V DC SFY4-DC12V
18 V DC SFY4-DC18V
21 V DC SFY4-DC21V
24 V DC SFY4-DC24V
5 Form A 1 Form B
5 V DC SFY5-DC5V
12 V DC SFY5-DC12V
18 V DC SFY5-DC18V
21 V DC SFY5-DC21V
24 V DC SFY5-DC24V
Contact arrangement Nominal coil
voltage Pick-up voltage
(at 20C 68F)Drop-out voltage
(at 20C 68F)
Nominal
operating current
[10%]
(at 20C 68F)
Coil resistance
[10%]
(at 20C 68F)
Nominal
operating power
(at 20C 68F)
Max. applied
voltage
(at 20C 68F)
4-pole
2 Form A 2 Form B
5V DC
75%V or less of
nominal voltage
(Initial)
15%V or more of
nominal voltage
(Initial)
134mA 38
670mW 120%V of
nominal voltage
12V DC 56mA 215
18V DC 37mA 483
21V DC 32mA 666
24V DC 28mA 864
3 Form A 1 Form B
5V DC 134mA 38
12V DC 56mA 215
18V DC 37mA 483
21V DC 32mA 666
24V DC 28mA 864
6-pole
4 Form A 2 Form B
5V DC 134mA 38
12V DC 56mA 215
18V DC 37mA 483
21V DC 32mA 666
24V DC 28mA 864
5 Form A 1 Form B
5V DC 134mA 38
12V DC 56mA 215
18V DC 37mA 483
21V DC 32mA 666
24V DC 28mA 864
SF-Y
3
ds_61411_en_sfy: 160117D
2. Specifications
Notes:
*1.This value can change due to the switching frequency , environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load.
*2.The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage conditions
in NOTES see page 7.
*3.According to EN 61810-1:2010, table 2. Characteristic is sealed construction with terminals, case and base sealed shut with sealing resin. Construction is designed to
prevent seeping of flux when soldering and cleaning fluid when cleaning. Harmful substances on the contacts are removed by gas purging before sealing with.
*4.Coil holding voltage is the coil voltage after 100 ms from the applied nominal voltage.
Important: Relay characteristics may be influenced by:
• strong external magnetic fields
• magnetic conductive materials near the relay
• narrow top-to-top mounting (printed surface to printed surface)
Insulation
= Reinforced insulation: overvoltage category III, pollution degree 2, 250V AC
(Clearance and creepage distance is 5.5 mm .217 inch or more between all contacts. Also, there is 5.5 mm .217 inch or more clearance and creepage distance
even between contact NO4 and coil.)
= Basic insulation: overvoltage category III, pollution degree 3, 250V AC
(The clearance is 3 mm .118 inch or more between all contacts and the creepage distance is 4 mm .157 inch or more. Even between contact NC3 and coil, the
clearance is 3 mm .118 inch or more and the creepage distance is 4 mm .157 inch or more.)
Characteristics Item Specifications
4-pole 6-pole
Contact
Contact arrangement 2 Form A 2 Form B, 3 Form A 1 Form B 4 Form A 2 Form B, 5 Form A 1 Form B
Forcibly guided contacts All contacts: Type A, IEC 61810-3
Contact resistance (Initial) Max. 100 m (By voltage drop 6 V DC 1A)
Contact material Gold-flashed AgNi alloy type
Rating
Nominal switching capacity (resistive load) 6A 250V AC, 6A 30V DC
Max. switching power (resistive load) 1,500VA, 180W
Max. switching voltage 250V AC, 30V DC
Max. switching current 6 A
Min. switching capacity (Reference value)*110mA 10V DC
Electrical
characteristics
Insulation resistance (Initial) Min. 1,000M (at 500V DC) Measurement at same location as “Breakdown voltage” section.
Breakdown
voltage (Initial)
Between open contacts 1,500 Vrms for 1 min. (Detection current: 10mA)
Between contact sets 4,000 Vrms for 1 min. (Detection current: 10mA)
Between contact and coil NC3: 2,500 Vrms for 1min; NO4: 4,000 Vrms for 1min (Detection current: 10mA)
Coil holding voltage*4Min. 60%V (Initial, at 20C 68F)
Operate time (at 20C 68F) Max. 20ms (Nominal coil voltage applied to the coil, excluding contact bounce time)
Release time (at 20C 68F) Max. 10ms (Nominal coil voltage applied to the coil, excluding contact bounce time) (without diode)
Mechanical
characteristics
Shock
resistance Functional Min. 200 m/s2 {Min. 20G} (Half-wave pulse of sine wave: 11 ms; detection time: 10s)
Destructive Min. 1,000 m/s2 (Half-wave pulse of sine wave: 6 ms)
Vibration
resistance Functional 10 to 55 Hz at double amplitude of 1.5 mm .059 inch (Detection time: 10s)
Destructive 10 to 55 Hz at double amplitude of 1.5 mm .059 inch
Expected life Mechanical Min. 107 (at 180 times/min.)
Electrical 250 V AC 6 A resistive load: Min. 105 (at 20 times/min.)
Degree of protection RT III*3
Conditions Conditions for operation, transport and
storage*2Ambient temperature: –40C to +70C –40F to +158F
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Max. Operating speed 20 times/min. (at nominal voltage)
Unit weight Approx. 19 g .67 oz Approx. 23 g .81 oz
2 Form A 2 Form B 3 Form A 1 Form B 4 Form A 2 Form B 5 Form A 1 Form B
NC2
NC3
Coil
NO4
NO5
1
5
7
2
4
10
3
9
6
8
NO2
NC3
Coil
NO4
NO5
1
5
7
2
4
10
3
9
6
8
NC2
NC3
Coil
NO4
NO5
NO6
NO1
1
5
7
2
4
10
3
9
6
8
13 14
11 12
NO2
NC3
Coil
NO4
NO5
NO6
NO1
1
5
7
2
4
10
3
9
6
8
13 14
11 12
SF-Y
4ds_61411_en_sfy: 160117D
Other contact gaps when contacts are welded
The table below shows the state of the other contacts.
In case of form “NO” contact weld the coil applied voltage is 0 V.
In case of form “NC” contact weld the coil applied voltage is nominal.
<2 Form A 2 Form B>
<3 Form A 1 Form B>
<4 Form A 2 Form B>
<5 Form A 1 Form B>
>0.5: contact gap is kept at min. 0.5 mm .020 inch
Empty cells: either ON or OFF
Note: Contact gaps are shown at the initial state.
If the contact transfer is caused by load switching, it is necessary to check the actual loading.
State of other contacts
3-4 (NC) 5-6 (NC) 7-8 (NO) 9-10 (NO)
Welded
terminal
No.
3-4 (NC) >0.5 >0.5
5-6 (NC) >0.5 >0.5
7-8 (NO) >0.5 >0.5
9-10 (NO) >0.5 >0.5
State of other contacts
3-4 (NC) 5-6 (NO) 7-8 (NO) 9-10 (NO)
Welded
terminal
No.
3-4 (NC) >0.5 >0.5 >0.5
5-6 (NO) >0.5
7-8 (NO) >0.5
9-10 (NO) >0.5
State of other contacts
3-4 (NC) 5-6 (NC) 7-8 (NO) 9-10 (NO) 11-12 (NO) 13-14 (NO)
Welded
terminal
No.
3-4 (NC) >0.5 >0.5 >0.5 >0.5
5-6 (NC) >0.5 >0.5 >0.5 >0.5
7-8 (NO) >0.5 >0.5
9-10 (NO) >0.5 >0.5
11-12 (NO) >0.5 >0.5
13-14 (NO) >0.5 >0.5
State of other contacts
3-4 (NC) 5-6 (NO) 7-8 (NO) 9-10 (NO) 11-12 (NO) 13-14 (NO)
Welded
terminal
No.
3-4 (NC) >0.5 >0.5 >0.5 >0.5 >0.5
5-6 (NO) >0.5
7-8 (NO) >0.5
9-10 (NO) >0.5
11-12 (NO) >0.5
13-14 (NO) >0.5
SF-Y
5
ds_61411_en_sfy: 160117D
DIMENSIONS mm inch
1. 4-pole (2 Form A 2 Form B, 3 Form A 1 Form B)
Download from our Web site
.
CAD Data
CAD Data External dimensions
14.5
.571
28.6
1.126
1 (x8)
.039 (x8)
6.25
.246
10.5
.413
6.25
.246
31
1.220
0.3
.012
0.5 (x2)
.020 (x2)
0.5 (x8)
.019 (x8)
3.3
.130
4.3
.169
5.15
.203
10.65
.419
4.3
.169
Projection mode:
2.8
.110
3.5
.138
General tolerance: 0.3 .012
Schematic (Bottom view)
109
87
43
65
21
12
56
34
78
910
(2 Form A 2 Form B) (3 Form A 1 Form B)
PC board pattern (Bottom view)
Tolerance: 0.1 .004
4.3
.169
10.65
.419
5.15
.203
4.3
.169
1.4 .055 dia., typical value for manual insertion
1.6 .063 dia., typical value for automatic insertion
6.25
.246
10.5
.413
6.25
.246
.299
7.6
SF-Y
6ds_61411_en_sfy: 160117D
2. 6-pole (4 Form A 2 Form B, 5 Form A 1 Form B)
REFERENCE DATA
CAD Data External dimensions
Projection mode:
28.6
1.126
14.5
.571
1 (x12)
.039 (x12)
6.25
.246
10.5
.413
6.25
.246
39
1.535
0.3
.012
0.5 (x12)
.019 (x12)
0.5 (x2)
.020 (x2)
3
.118
4.3
.169
4.3
.169
5.15
.203
10.65
.419
4.3
.169
4.3
.169
2.8
.110
3.5
.138
General tolerance: 0.3 .012
Schematic (Bottom view)
(4 Form A 2 Form B) (5 Form A 1 Form B)
14
1211
109
87
43
65
21
1313
12
56
34
78
910
11 12
14
PC board pattern (Bottom view)
Tolerance: 0.1 .004
6.25
.246
10.5
.413
6.25
.246
.299
7.6
4.3
.169
4.3
.169
10.65
.419
5.15
.203
4.3
.169
4.3
.169
1.4 .055 dia., typical value for manual insertion
1.6 .063 dia., typical value for automatic insertion
Coil voltage characteristics
SF-Y
7
ds_61411_en_sfy: 160117D
SAFETY STANDARDS
NOTES
For Cautions for Use, see Relay Technical Information.
Certification authority File No. Rating Comment
UL/C-UL E120782 6A 250V AC, general use, 100Kops
6A 30V DC, general use, 100Kops, B300, R300 (pilot duty) -
TÜV Cert. no: 968/EZ 535. 00/12 6A 230V AC (cos=1.0) 70C 158F, 6A 24V DC resistive Test procedure A
(Group Mounting)
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.
2. Coil connection
When connecting coils, refer to the
wiring diagram to prevent mis-
operation or malfunction.
3. Soldering
When using automatic soldering, the
following conditions are
recommended
1) Preheating: 120C 248F, within 120
sec (PC board solder surface)
2) Soldering: 260C5C 500F41F,
within 6 sec