LK-T

2ds_61113_0004_en_lkt: 091008J

TYPES AND COIL DATA (at 20°C 68°F)
DIMENSIONS mm inch
REFERENCE DATA
Part No. Nominal voltage,
V DC
Pick-up voltage,
V DC (max.)
(Initial)
Drop-out
voltage,
V DC (min.)
(Initial)
Coil resistance,
Ω (±10%)
Nominal
operating
current, mA
(±10%)
Nominal
operating power,
mW
Maximum
allowable
voltage, V DC
(at 20°C 68°F)
LKT1aF-5V 5 (Initial) 3.5 (Initial) 0.5 100 50 250 6.5
LKT1aF-9V 9 (Initial) 6.3 (Initial) 0.9 324 27.8 250 11.7
LKT1aF-12V 12 (Initial) 8.4 (Initial) 1.2 576 20.8 250 15.6
LKT1aF-24V 24 (Initial) 16.8 (Initial) 2.4 2,304 10.4 250 31.2
4
0.5
1.65
Max. 25.0
Max. 11.0
0.3
0.5 dia.
20.0
16.5
0.4
Max. 24.0
7.5
1.0
.157
.020
.065
.984
.433
.012
.020 dia.
.787
.650
.016
.945
.295
.039
Dimension: General tolerance
Max. 1mm .039 inch:±0.1 ±.004
1 to 3mm .039 to .118 inch:±0.2 ±.008
Min. 3mm .118 inch:±0.3 ±.012
PC board pattern (Bottom view)
Tolerance: ±0.1 ±.004
Schematic (Bottom view)
2-0.9 dia. 2-1.3 dia.
16.5
7.5
20.0
2
-.035 dia. 2-.051 di
a.
.650
.295
.787
1. Max. switching power (AC resistive load) 2. Coil temperature rise
Sample: LKT1aF-12V, 6 pcs.
Point measured: coil inside
Contact current: 0 A, 5A
3. Ambient temperature characteristics and coil
applied voltage
100
10
1
5
0 10 100
Contact voltage, V
Contact current, A
800
0
5
10
15
20
25
30
100 120
20°C 5A
20°C 0A
70°C 5A
70°C 0A
Temperature rise, °C
Coil applied voltage, %V
0
500
400
300
200
100
01020304050607080
Ambient temperature, °C
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature
set as 115°C
Pick-up voltage
Coil & contact no carrying current
Coil applied voltage, %V
Carrying current: 5
A
239°F)
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:
Change of pick-up and drop-out voltage Change of contact resistance
12V DC
Contact
welding
detection
and Mis-
contacting
detection
circuit
277V AC
0
0
2
4
6
8
10
12
510
Drop-out voltage
Pick-up voltage Max.
Min.
x
Max.
Min.
x
No. of operations, ×104
Pick-up and drop-out voltage, V
0
0
5
10
15
20
25
30
35
40
45
50
105
Max.
Min.
x
No. of operations, ×10
4
Contact resistance, mΩ