FTR-K1 SERIES
POWER RELAY
1 POLE - 25A - 1.5mm contact gap
FTR-K3-WG Series
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FEATURES
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1 pole, 25A
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1 Form A
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Contact gap 1.5mm
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High insulation in small package
(between coil and contact)
- Insulation distance: Clearance > 6.5mm
Creepage > 9.5mm
- Dielectric strength: 5,000VAC
- Surge strength: 8,500V
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Flammability UL94V-0 (plastics)
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RoHS compliant
Please see page 5 for more information
Contains no lead and features cadmium-free contacts
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PARTNUMBER INFORMATION
[Example]
FTR-K3 A B 012 W - WG
(a)
(b) (c) (d) (e) (f)
(a)
(b)
(c)
(d)
(e)
(f)
Relay type
Contact configuration
Coil type
Coil rated voltage
Contact material
Version
FTR-K3-WG : FTR-K3-WG Series
A
B
012
W
WG
: 1 form A
: Standard (0.78W)
: 5.....48 VDC
Coil rating table at page 3
: Silver tin oxide
: Contact gap 1.5mm
Actual marking does not carry the type name : "FTR"
E.g.: Ordering code: FTR-K3AB012W-WG Actual marking: K3AB012W
K3AB012W
WG marked on the relay
FTR-K3-WG SERIES
FTR-K1 SERIES
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SPECIFICATION
Item
Contact
Data
Configuration
Material
Resistance (initial)
Contact rating
Max. carrying current
Max. switching power
Max. switching voltage
Max. switching current
Min. switching load (reference)
Life
Mechanical
FTR-K3-WG
1 form A
Silver tin oxide
≤ 100mOhm at 1A, 6VDC
25A / 250VAC (resistive)
25A
6,250VA
250VAC
25A
100mA, 5VDC
2 x 10
6
operations minimum
25A 250VAC, 100 x 10
3
operations resistive
Electrical
Inrush 200A / break 25A 100VAC: 30 x 10
3
operations (inverterload)
Inrush 80A cosφ 0.7 / 20A cosφ 0.9 ; 250VAC
2 x 10
5
operations (motorload)
Coil Data
Rated power (at 20 °C)
Operate power (at 20 °C)
Operating temperature range
Timing Data
Insulation
Operate (at nominal voltage)
Release *
Contact gap (initial)
Resistance
Dielectric strength
Surge strength
Other
Vibration resistance
Shock resistance
Weight
Open contacts
Coil and contacts
Coil to contacts
Misoperation
Endurance
Misoperation
Endurance
Approximately 0.78W
Approximately 0.38W
-40 °C to +60 °C (no frost)
≤ 20ms (no bounce)
≤ 10ms (no diode, no bounce)
Minimum 1.5 mm
≥ 1,000MOhm at 500VDC
1,000VAC, 1min.
5,000VAC, 1min.
8,500V / 1.2 x 50µs standard wave
10 to 55Hz double amplitude 1.5 mm
10 to 55Hz double amplitude 1.5 mm
Min. 200m/s² (11 ± 1ms)
Min. 1,000m/s² (6 ± 1ms)
Approximately 25 g
* Use a varistor as a protective circuit against reverse surge in the relay coil. A varistor is connected parallel to the
coil. The reverse blocking voltage should be about 3 times the value of the power surge voltage.
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FTR-K1 SERIES
FTR-K3-WG SERIES
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COIL RATING
Coil
Code
005
006
009
012
08
024
048
Rated Coil
Coil Resistance
Voltage
+/- 10% (Ohm)
(VDC)
5
6
9
12
8
24
48
32
46
105
185
415
740
2,955
Must Operate Must Release-
Voltage
Voltage
(VDC) *
(VDC) *
3.5
4.2
6.3
8.4
12.6
16.8
33.6
0.5
0.6
0.9
1.2
.8
2.4
4.8
Approx.
0.78
Rated Power +/-
10% (W)
Note: All values in the table are measured at 20°C and zero contact current
* Specified values are measured with pulse wave voltage
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SAFETY STANDARDS
Type
UL
Compliance
UL 508
Contact rating
20A, 277VAC, resistive
1HP, 125VAC
1HP, 277VAC
20A, 250VAC (cosφ=1) 60°C
VDE
0435
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FTR-K1 SERIES
FTR-K3-WG SERIES
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DIMENSIONS
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Dimensions
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Schematics
(BOTTOM VIEW)
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PC board pattern
(BOTTOM VIEW)
Unit: mm
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FTR-K1 SERIES
FTR-K3-WG SERIES
RoHS Compliance and Lead Free Information
1. General Information
All signal and power relays produced by Fujitsu Components are compliant with RoHS directive 2002/95EC
including amendments.
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Cadmium as used in electrical contacts is exempted from the RoHS directives on October 21st, 2005.
(Amendment to Directive 2002/95/EC)
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All of our signal and power relays are lead-free. Please refer to Lead-Free Status Info for older date codes
at: http://www.fujitsu.com/us/downloads/MICRO/fcai/relays/lead-free-letter.pdf
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Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specified.
This material has been verified to be compatible with PbSn assembly process.
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2. Recommended Lead Free Solder Profile
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Recommended solder Sn-3.0Ag-0.5Cu.
Flow Solder condition:
Pre-heating:
Soldering:
maximum 120˚C
dip within 5 sec. at
260˚C solder bath
Solder by Soldering Iron:
Soldering Iron
Temperature: maximum 360˚C
Duration:
maximum 3 sec.
We highly recommend that you confirm your actual solder conditions
3. Moisture Sensitivity
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Moisture Sensitivity Level standard is not applicable to electromechanical relays, unless otherwise indicated.
4. Tin Whiskers
Dipped SnAgCu solder is known as presenting a low risk to tin whisker development. No considerable length
whisker was found by our in house test.
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