VDE
TV-5 rated.
High sensitivity: 250mW
1a 5A power relays
LK-S
LK-S RELAYS
FEATURES
1. High sensitivity
A nominal operating power of 250mW
and high sensitivity make it ideal for
energy saving (LK relay is 530mW).
2. High insulation resistance between
contact and coil
1) Creepage distance and clearances
between contact and coil: Min. 6 mm .236
inch (In compliance with IEC60065)
2) Surge withstand voltage between
contact and coil: 10,000 V
3. Popular terminal pitch in AV
equipment field
RoHS compliant
4. Space-saving slim type
Base area: Width 11 × Length 24 mm
Width .433 × Length .945 inch
5. Conforms to the various safety
standards
UL, CSA, VDE, TÜV and SEMKO
approved
TYPICAL APPLICATIONS
• Audio visual equipment
• Office equipment
• Home appliances
ORDERING INFORMATION
LKS 1a
F
LK-S relay
Contact arrangement
1a: 1 Form A
Protective construction
F: Flux-resistant type
Nominal coil voltage (DC)
5V, 9V, 12V, 24V
Notes: Certified by UL, CSA, TÜV and SEMKO
VDE approved type is available. Please consult us for details.
TYPES
Contact arrangement
Nominal coil voltage
5V DC
9V DC
12V DC
24V DC
1 Form A
Part No.
LKS1aF-5V
LKS1aF-9V
LKS1aF-12V
LKS1aF-24V
Standard packing Carton: 100 pcs. Case: 500 pcs.
Note: 6 V, 18 V DC types are also available. Please consult us for details.
RATING
1. Coil data
Nominal coil
voltage
Pick-up voltage
(at 20°C 68°F)
Drop-out voltage
(at 20°C 68°F)
5V DC
9V DC
12V DC
24V DC
70%V or less of
nominal voltage
(Initial)
10%V or more of
nominal voltage
(Initial)
ASCTB80E 201201-T
Panasonic Corporation
Nominal operating
current
[±10%] (at 20°C 68°F)
50mA
27.8mA
20.8mA
10.4mA
Coil resistance
[±10%] (at 20°C 68°F)
100Ω
324Ω
576Ω
2,304Ω
Automation Controls Business Unit
Nominal operating
power
Max. applied voltage
(at 20°C 68°F)
250mW
6.5V DC
11.7V DC
15.6V DC
31.2V DC
industrial.panasonic.com/ac/e
LK-S
2. Specifications
Characteristics
Contact
Rating
Item
Arrangement
Contact resistance (Initial)
Contact material
Nominal switching capacity (resistive load)
Max. switching power (resistive load)
Max. switching voltage
Max. switching current
Min. switching capacity*1
Insulation resistance (Initial)
Breakdown voltage
(Initial)
Specifications
1 Form A
Max. 100 mΩ (By voltage drop 6 V DC 1A)
AgSnO2 type
5A 277V AC
1,385VA
277V AC
5A (AC)
100mA, 5V DC
Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdown voltage” section.
Between open contacts
Between contact and coil
1,000 Vrms for 1 min. (Detection current: 10 mA)
4,000 Vrms for 1 min. (Detection current: 10 mA)
Max. 35°C 95°F (By resistive method, nominal coil voltage applied to the coil;
contact carrying current: 5A, at 70°C 158°F)
Temperature rise (coil)
Electrical
characteristics
Surge breakdown voltage*2
(Between contact and coil) (Initial)
Operate time (at nominal voltage) (at 20°C 68°F)
(Initial)
Release time (at nominal voltage) (at 20°C 68°F)
(Initial)
Expected life
Conditions
Max. 15 ms (excluding contact bounce time.)
Max. 5 ms (excluding contact bounce time) (Without diode)
200 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)
1,000 m/s2 (Half-wave pulse of sine wave: 6 ms.)
10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10µs.)
10 to 55 Hz at double amplitude of 1.5 mm
Min. 106
Min. 105 (ON:OFF = 1.5s:1.5s, at nominal switching capacity)
Ambient temperature: –40°C to +70°C –40°F to +158°F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature),
Air pressure: 86 to 106kPa
20 times/min. (at nominal switching capacity)
Approx. 12 g .42 oz
Functional
Destructive
Functional
Vibration resistance
Destructive
Mechanical (at 180 times/min.)
Electrical (at 20 times/min.)
Shock resistance
Mechanical
characteristics
10,000 V
Conditions for operation, transport and storage*3
Max. operating speed
Unit weight
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. Wave is standard shock voltage of ±1.2×50µs according to JEC-212-1981
*3. 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.
REFERENCE DATA
1. Max. switching power (AC resistive load)
2. Coil temperature rise
3. Ambient temperature characteristics and coil
applied voltage
Sample: LKS1aF-12V, 6 pcs.
Point measured: coil inside
Contact current: 0 A, 5A
100
Contact current: 5 A
30
Temperature rise, °C
Contact current, A
10
5
1
25
70°C 5A
70°C 0A
20
15
10
Coil applied voltage, %V
500
20°C 5A
20°C 0A
400
Allowable ambient temperatures
against % coil voltages
(max. inside the coil temperature set as
115°C 239°F)
300
200
Cold start
100
5
Pick-up voltage
0
10
100
Contact voltage, V
Panasonic Corporation
0
0
80
100
120
0
0
10
20
Coil applied voltage, %V
Automation Controls Business Unit
industrial.panasonic.com/ac/e
30
40
50
60
70
80
Ambient temperature, °C
ASCTB80E 201201-T
LK-S
4. Life curve
Operation frequency: 20 times/min.
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: Room temperature
Life, ×104
100
250V AC resistive load
10
1
0
1
2
3
4
5
Contact current, A
5-(1). Electrical life test
(5 A 277 V AC, resistive load)
Change of pick-up and drop-out voltage
12V DC
45
10
Pick-up voltage
6
4
5
No. of operations, ×104
Pick-up and drop-out voltage, V
30
Max.
25
x
Min.
20
15
5
0
0
10
5
No. of operations, ×104
10
Change of contact resistance
12
50
45
10
8
Pick-up voltage
Max.
x
Min.
6
4
Drop-out voltage
2
0
0
Max.
x
Min.
2.5
No. of operations, ×104
ASCTB80E 201201-T
35
10
Max.
x
Min.
2
Change of pick-up and drop-out voltage
Tested sample: LKS1aF-12V, 6 pcs.
• Overload test
Load: 7.5 A 120 V AC (60 Hz),
Inrush: 111 A
Operation frequency: 10 times/min
(ON: OFF = 1 s: 5 s)
No. of operations: 50 ope.
• Endurance test
Load: 5A 120 V AC (60 Hz),
Inrush: 78 A
Operation frequency: 10 times/min
(ON: OFF = 1 s: 5 s)
No. of operations: 25,000 ope.
40
Drop-out voltage
0
0
5-(2). Electrical life test
(UL lamp load test TV-5)
Max.
x
Min.
8
Contact resistance, mΩ
Contact
welding
detection
and Miscontacting
detection
circuit
50
Panasonic Corporation
Automation Controls Business Unit
Contact resistance, mΩ
Circuit:
Pick-up and drop-out voltage, V
Sample: LKS1aF-12V, 6 pcs.
Operation frequency: 20 times/min.
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: 20°C 68°F
277V AC
Change of contact resistance
12
40
35
30
25
20
15
10
Max.
x
5
Min.
0
0
2.5
No. of operations, ×104
industrial.panasonic.com/ac/e
LK-S
DIMENSIONS (mm inch)
The CAD data of the products with a
CAD Data
mark can be downloaded from: http://industrial.panasonic.com/ac/e
External dimensions
CAD Data
PC board pattern (Bottom view)
2-0.9 dia.
2-.035 dia.
16.5
.650
7.5
.295
Max. 25.0
.984
0.5
.020
0.5 dia.
.020 dia.
1.65
.065
Max. 24.0
.945
16.5
.650
20.0
.787
Tolerance: ±0.1 ±.004
4
.157
0.3
.012
2-1.3 dia.
2-.051 dia.
Schematic (Bottom view)
0.4
.016
Max. 11.0
.433
1.0
.039
7.5
.295
20.0
.787
Dimension:
Less than 1mm .039inch:
Min. 1mm .039inch less than 3mm .118 inch:
Min. 3mm .118 inch:
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
SAFETY STANDARDS
UL/C-UL (Recognized)
File No.
Contact rating
E43149
5A 277V AC
5A 30V DC
10A 277V AC
CSA (Certified)
File No.
Contact rating
LR26550
5A 277V AC
etc.
5A 30V DC
10A 277V AC
File No.
40014390
VDE (Certified)
TV rating (UL/CSA)
Contact rating
File No.
Rating
TV-5
5A 250V AC (cosφ =1.0) UL
10A 250V AC (cosφ =1.0) E43149
CSA
LR26550
TÜV (Certified)
File No.
Rating
B 10 01
5A 250V AC (cosφ =1.0)
13461 270
SEMKO (Certified)
File No.
Contact rating
807779
3/100A 250V AC
5/40A 250V AC
For Cautions for Use.
Panasonic Corporation
Automation Controls Business Unit
industrial.panasonic.com/ac/e
ASCTB80E 201201-T