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LK-T
TYPES AND COIL DATA (at 20°C 68°F)
Nominal voltage,
Part No.
V DC
LKT1aF-5V
5
LKT1aF-9V
9
LKT1aF-12V
12
LKT1aF-24V
24
DIMENSIONS
0.5 dia.
.020 dia.
1.65
.065
REFERENCE DATA
1. Max. switching power (AC resistive load)
100
10
5
1
0
10
100
Contact voltage, V
4-(1). Electrical life test
(5 A 277 V AC, resistive load)
Sample: LKT1aF-12V, 6 pcs.
Operation frequency: 20 times/min.
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: 20°C
68°F
Circuit:
277V AC
12V DC
2
Drop-out
Pick-up voltage,
voltage,
V DC (max.)
V DC (min.)
(Initial)
(Initial)
(Initial) 3.5
(Initial) 0.5
(Initial) 6.3
(Initial) 0.9
(Initial) 8.4
(Initial) 1.2
(Initial) 16.8
(Initial) 2.4
Max. 25.0
.984
0.5
.020
4
.157
0.3
.012
0.4
.016
Max. 24.0
.945
16.5
1.0
.650
.039
Dimension:
7.5
.295
Max. 1mm
1 to 3mm
20.0
Min. 3mm
.787
2. Coil temperature rise
Sample: LKT1aF-12V, 6 pcs.
Point measured: coil inside
Contact current: 0 A, 5A
30
25
20
15
10
5
0
0
80
Change of pick-up and drop-out voltage
12
10
8
6
Contact
welding
detection
and Mis-
4
contacting
detection
circuit
2
0
0
Nominal
Coil resistance,
operating
Ω (±10%)
current, mA
100
324
576
2,304
Max. 11.0
.433
General tolerance
±0.1
±.004
.039
inch:
inch: ±0.2
±.008
.039 to .118
±0.3
±.012
.118
inch:
20°C 5A
20°C 0A
70°C 5A
70°C 0A
100
120
Coil applied voltage, %V
Pick-up voltage
Max.
x
Min.
Drop-out voltage
Max.
x
Min.
5
10
No. of operations, ×10
4
Nominal
operating power,
mW
(±10%)
50
250
27.8
250
20.8
250
10.4
250
PC board pattern (Bottom view)
2-0.9 dia.
16.5
2-.035 dia.
.650
20.0
.787
Tolerance: ±0.1
Schematic (Bottom view)
3. Ambient temperature characteristics and coil
applied voltage
500
400
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
300
set as 115°C
239°F)
200
Coil & contact no carrying current
100
Pick-up voltage
0
0
10
20
30
40
Ambient temperature, °C
Change of contact resistance
50
45
40
35
30
25
20
15
10
5
0
0
5
No. of operations, ×10
ds_61113_0004_en_lkt: 091008J
Maximum
allowable
voltage, V DC
(at 20°C 68°F)
6.5
11.7
15.6
31.2
mm
inch
2-1.3 dia.
2-.051 dia.
7.5
.295
±.004
Carrying current: 5A
50
60
70
80
Max.
x
Min.
10
4
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