LF
VDE
20A Power Relay For
Home appliances
LF-RELAYS
FEATURES
30.1
1.185
15.7
.618
23.3
.917
TMP type
15.7
.618
4. Conforms to the various safety
standards:
UL/CSA, TÜV, VDE approved
1. Ideal for compressor and inverter
loads
1) Compressor load: 20A 250V AC
23.3
.917
2) Inverter load: 20A 100V AC, 10A 200V AC
2. High insulation resistance
• Creepage distance and clearances
between contact and coil;
Creepage Min. 9.5mm .374inch/ClearPCB type
ance Min. 8mm .315inch
mm inch
• Surge withstand voltage: Min. 10,000V
3. "PCB" and "TMP" types available
30.1
1.185
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
Electrical
(min. operations)
(at 20 cpm)
(Resistive load)
Characteristics
1 Form A
100 mΩ
Silver alloy
20 A 250V AC
6,250 V A
250V AC
25 A
2 × 106
105
900 mW
Remarks
*
*1
*2
*3
*4
*5
*6
*7
*8
Specifications will vary with foreign standards certification ratings.
Measurement at same location as "Initial breakdown voltage" section.
Detection current: 10mA
Wave is standard shock voltage of ±1.2 × 50µs according to JEC-212-1981
Excluding contact bounce time.
Half-wave pulse of sine wave: 11 ms; detection time: 10 µs
Half-wave pulse of sine wave: 6 ms
Detection time: 10 µs
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 24).
TYPICAL
APPLICATIONS
• Air conditioner
• Refrigerators
• OA equipment
Functional*5
Destructive*6
Shock
resistance
Functional*7
Vibration
resistance
Destructive
Conditions for
Ambient temp.
operation, trans8
port and storage*
(Not freezing and
Humidity
condensing at low
temperature)
Unit weight
Min. 1,000 MΩ (at 500 V DC)
1,000 Vrms for 1 min.
5,000 Vrms for 1 min.
Min. 10,000 V
Approx. 15ms
Approx. 15ms
5 to 85% R.H.
Approx. 23 g .81 oz
ORDERING INFORMATION
Ex.
A
LF
1
T
12
Product Name
Contact arrangement
Terminal shape
LF
1: 1 Form A
T: TMP type
P: PCB type
Note: Standard packing; Carton: 50 pcs. Case 200 pcs.
UL/CSA,VDE, TÜV approved type is standard.
40
20 cpm
Max. 45°C
(resistance method, contact
current 20 A, rated coil
voltage, 60°C 140°F)
Min. 100 m/s2{10 G}
Min. 1,000 m/s2{100 G}
10 to 55Hz
at double amplitude of 1.5mm
10 to 55Hz
at double amplitude of 1.5mm
–40°C to +60°C
–40°F to +140°F
Temperature rise
(at nominal voltage)
Coil
Nominal operating power
Max. operating speed
(at rated load)
Initial insulation resistance*1
Between open
Initial breakdown contacts
voltage*2
Between contacts
and coil
Surge voltage between contact and
coil*3
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Coil voltage, V DC
05: 5
06: 6
09: 9
12: 12
18: 18
24: 24
LF
TYPES
Contact
arrangement
Coil voltage,
V DC
5
6
9
12
18
24
1 Form A
TMP type
PCB type
ALF1T05
ALF1T06
ALF1T09
ALF1T12
ALF1T18
ALF1T24
ALF1P05
ALF1P06
ALF1P09
ALF1P12
ALF1P18
ALF1P24
COIL DATA
Nominal voltage,
V DC
Pick-up voltage,
V DC (max.)
Drop-out voltage,
V DC (min.)
Coil resistance,
Ω(±10%)
5
6
9
12
18
24
3.5
4.2
6.3
8.4
12.6
16.8
0.5
0.6
0.9
1.2
1.8
2.4
27.8
40
90
160
360
640
Nominal operating
current, mA
(±10%)
180
150
100
75
50
37.5
Nominal operating
power, W
Maximum allowable voltage, V DC
0.9
5.5
6.6
9.9
13.2
19.8
26.4
DIMENSIONS
mm inch
1. TMP type
11.25
.443
12.8
.504
#250 terminal
PC board pattern (Bottom view)
6.4
.252
27.6 ±0.1
1.087 ±.004
2.0
.079
13.8 ±0.1
.543 ±.004
a.
di .
8 ia
1. d
4- 071
.
412.0 ±0.1
.472 ±.004
23.3
.917
0.5
.020
22.0
.866
27.6
1.087
12.0 ±0.1
.472 ±.004
4.0
.157
12.0
.472
10.0 ±0.1
.394 ±.004
Tolerance : ±0.1 ±.004
Schematic (Bottom view)
FASTON 250
30.1
1.185
3 NO COM 4
15.7
.618
1
2
Dimension :
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
NO
COM
PC board side
2. PCB type
PC board pattern (Bottom view)
27.6 ±0.1
1.087 ±.004
13.8 ±0.1
.543 ±.004
a.
di .
8 ia
1. d
4- 071
.
4-
23.3
.917
0.5
.020
22.0
.866
27.6
1.087
12.0
.472
12.0 ±0.1
.472 ±.004
4.0
.157
12.0 ±0.1
.472 ±.004
30.1
1.185
3 NO COM 4
15.7
.618
1
2
Dimension :
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
10.0 ±0.1
.394 ±.004
Tolerance : ±0.1 ±.004
Schematic (Bottom view)
NO
COM
41
LF
REFERENCE DATA
Sample: ALF1T12, 6 pcs.
Point measured: coil inside
Contact current: 20A
Ambient temperature: 25°C 77°F, 60°C 140°F
Temperature rise, °C °F
70
158
25°C 77°F
60°C 140°F
60
140
2-(1). 200V AC electrical life test
(200V AC, inverter load)
Sample: ALF1T12, 6 pcs.
Load: Inrush 102A (wave peak value),
Steady 14.4A (wave peak value)
Inverter dummy 200V AC
Switching frequency: ON 1s, OFF 5s
Circuit:
12
Pick-up and drop-out voltage, V
1. Coil temperature rise
50
122
LF relay contact
40
104
30
86
200V AC
1.9Ω
20
68
10
50
0
32
2,000µF
100
10
Pick-up voltage
Max.
x
Min.
8
6
Drop-out voltage
Max.
x
4
Min.
2
Switch
80
Contact welding: 0 times
Miscontact: 0 times
0
120
0
3
6
No. of operations, ×104
Coil applied voltage, %V
2-(2). 100V AC electrical life test
(100V AC, inverter load)
Sample: ALF1T12, 6 pcs.
Load: Inrush 224A (wave peak value),
Steady 30.5A (wave peak value)
Inverter dummy 100V AC
Switching frequency: ON 1s, OFF 5s
Circuit:
LF relay contact
470µF
2,000µF
100V AC
470µF
Pick-up and drop-out voltage, V
12
Contact welding: 0 times
Miscontact: 0 times
10
Pick-up voltage
8
Max.
x
6
Min.
Drop-out voltage
Max.
x
Min.
4
2
0
0
3
6
No. of operations, ×104
2-(3). Inrush 70.7A, Steady 20A, 250V AC
electrical life test
(Compressor dummy load)
NO
Mg
250V AC
(–)
60Hz
12V DC
SW1
(+)
Detection
Circuit
Contact Weld
Min. 0.5s
Miss Contact
after 0.2s
12
12
Contact welding: 0 times
Miscontact: 0 times
10
8
Pick-up voltage
6
4
Drop-out voltage
Max.
x
Min.
Max.
x
Min.
2
Pick-up and drop-out voltage, V
COM
Sample: ALF1T12, 6 pcs.
Switching frequency: ON 1.5s, OFF 1.5s
Pick-up and drop-out voltage, V
Sample: ALF1T12, 3 pcs.
Load: Inrush 70.7A, cosφ = 0.7
Steady 20A, cosφ 0.9
250V AC compressor dummy
Switching frequency: ON 1.5s, OFF 1.5s
Circuit:
2-(4). Electrical life test
(20A 250V AC, resistive load)
Contact welding: 0 times
Miscontact: 0 times
10
Pick-up voltage
8
Max.
x
Min.
6
Drop-out voltage
Max.
x
4
Min.
2
G
0
0
5
No. of operations, ×104
10
0
0
10
No. of operations, ×104
For Cautions for Use, see Relay Technical Information (Page 11 to 39).
42
20