Lk-t, Types and coil data (at 20 ° c 68 ° f ) dimensions, Reference data – Panasonic LK-T Relays User Manual
Page 2
LK-T
2
ds_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 dia.
.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
80
0
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
0
10
20
30
40
50
60
70
80
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: 5A
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
5
10
Drop-out voltage
Pick-up voltage
Max.
Min.
x
Max.
Min.
x
No. of operations,
×10
4
Pick-up and drop-out voltage, V
0
0
5
10
15
20
25
30
35
40
45
50
10
5
Max.
Min.
x
No. of operations,
×10
4
Contact resistance, m
Ω