VDE
LK-S
LK-S
RELAYS
250 mW Slim Power Relay
FEATURES
24.0
.945
11.0
.433
25.0
.984
mm inch
3. High noise immunity realized by the
card separation structure between
contact and coil
4. Popular terminal pitch in AV equipment field
5. Space-saving slim type
Base area: Width 11 × Length 24 mm
Width .433 × Length .945 inch
6. Conforms to the various safety standards
UL/CSA, VDE, TÜV and SEMKO SEV
approved
1. High sensitivity: 250mW
The power-saving relay is highly sensitive
at the nominal operating power of 250
mW (530 mW power consumption on LK
relays).
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 IEC65)
2) Surge withstand voltage between contact and coil: 10,000 V or more
SPECIFICATIONS
Contact
Arrangement
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A)
Contact material
Nominal switching capacity
Max. switching power
Rating
(resistive load)
Max. switching voltage
Max. switching current
Mechanical (at 180 cpm)
Expected life
(min. operations) Electrical (at 20 cpm)
(at rated load)
Characteristics
Max. operating speed
Initial insulation resistance*1
1 Form A
Max. 100 mΩ
Between open
contacts
Between contact and
coil
Initial surge voltage between contact
and coil*3
Operate time*4 (at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
1,000 Vrms for 1 min.
Initial *2
breakdown
voltage
Silver alloy
5 A 277 V AC
1,385 V A
277 V AC
5 A (AC)
106
105
Coil
Nominal operating power
20 cpm (at rated load)
Min. 1,000 MΩ (at 500 V DC)
Temperature rise (at 70°C)
250 mW
Remarks
* Specifications will vary with foreign standards certification ratings.
*1 Measurement at same location as "Initial breakdown voltage" section.
*2 Detection current: 10mA
*3 Wave is standard shock voltage of ±1.2 × 50µs according to JEC-212-1981
*4 Excluding contact bounce time.
*5 Half-wave pulse of sine wave: 11 ms; detection time: 10 µs
*6 Half-wave pulse of sine wave: 6 ms
*7 Detection time: 10 µs
*8 Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 24).
Functional*5
Destructive*6
Shock resistance
Functional*7
Vibration resistance
Destructive
Conditions for operation,
transport and storage*8
(Not freezing and condensing at low temperature)
4,000 Vrms for 1 min.
Min. 10,000 V
Approx. 7 ms (at 20°C 68°F)
Approx. 2 ms (at 20°C 68°F)
Max. 35°C with nominal coil
voltage and at 5 A contact
carrying current
(resistance method)
Min. 200 m/s2{approx. 20 G}
Min. 1,000 m/s2{approx. 100 G}
10 to 55Hz
at double amplitude of 1.5mm
10 to 55Hz
at double amplitude of 1.5mm
–40°C to +70°C
–40°F to +158°F
5 to 85% R.H.
Ambient
temp.
Humidity
Air
pressure
86 to 106 kPa
Unit weight
TYPICAL
APPLICATIONS
• Audio visual equipment
• Office equipment
• Home appliances
Approx. 12 g .42 oz
ORDERING INFORMATION
Ex. LKS
1a
F
–
12V
Contact arrangement
Protective construction
Coil voltage(DC)
1a: 1 Form A
F: Flux-resistant type
5, 9, 12, 24V
UL/CSA, TÜV, SEMKO, TV-5 approved type is standard.
Notes 1. Standard packing Carton: 100 pcs. Case: 500 pcs.
2. 6 V, 18 V DC types are also available. Please consult us for details.
53
LK-S
TYPES AND COIL DATA (at 20°C 68°F)
Part No.
Nominal
voltage,
V DC
LKS1aF-5V
LKS1aF-9V
LKS1aF-12V
LKS1aF-24V
5
9
12
24
Pick-up
voltage,
V DC (max.)
(Initial)
3.5
6.3
8.4
16.8
Drop-out
voltage,
V DC (min.)
(Initial)
0.5
0.9
1.2
2.4
Coil resistance,
Ω (±10%)
100
324
576
2,304
Nominal
operating
current,
mA (±10%)
50
27.8
20.8
10.4
Nominal
operating power,
mW
250
250
250
250
Maximum
allowable
voltage,
V DC (at 20°C 68°F)
6.5
11.7
15.6
31.2
DIMENSIONS
mm inch
PC board pattern (Bottom view)
2-0.9 dia
2-.035 dia
2-1.3 dia
2-.051 dia
16.5
.650
Max. 25.0
.984
7.5
.295
0.5
.020
0.5 dia.
.020 dia.
4
.157
0.3
.012
1.65
.065
Max. 24.0
.945
16.5
.650
20.0
.787
Tolerance: ±0.1 ±.004
Schematic (Bottom view)
0.4
.016
Max. 11.0
.433
1.0
.039
Dimension:
Max. 1mm .039 inch:
1 to 3mm .039 to .118 inch:
Min. 3mm .118 inch:
7.5
.295
20.0
.787
General tolerance
±0.1 ±.004
±0.2 ±.008
±0.3 ±.012
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
Contact current: 5 A
500
Temperature rise, °C
Contact current, A
20°C 5A
20°C 0A
10
5
1
25
70°C 5A
70°C 0A
20
15
10
Coil applied voltage, %V
30
100
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
0
100
Contact voltage, V
Operation frequency: 20 times/min.
(ON/OFF = 1.5s: 1.5s)
Ambient temperature: Room temperature
Life, ×104
100
250V AC resistive load
10
0
1
2
3
4
Contact current, A
54
80
100
120
Coil applied voltage, %V
4. Life curve
1
0
5
0
0
10
20
30
40
50
60
70
Ambient temperature, °C
80
LK-S
5-(1). Electrical life test
(5 A 277 V AC, resistive load)
Change of pick-up and drop-out voltage
Pick-up voltage
6
4
Drop-out voltage
35
30
Max.
25
x
Min.
20
15
5
0
0
10
Change of pick-up and drop-out voltage
5
No. of operations, ×104
10
Change of contact resistance
12
Pick-up and drop-out voltage, V
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.
5
No. of operations, ×104
40
10
Max.
x
Min.
2
0
0
5-(2). Electrical life test (UL lamp load test TV-5)
Max.
x
Min.
8
Contact resistance, mΩ
45
10
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
Contact resistance, mΩ
Contact
welding
detection
and Miscontacting
detection
circuit
Pick-up and drop-out voltage, V
Circuit:
12V DC
50
12
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
40
35
30
25
20
15
10
Max.
x
5
Min.
0
0
2.5
No. of operations, ×104
For Cautions for Use, see Relay Technical Information (Page 11 to 39).
55