LF
40
TMP type PCB type
mm inch
30.1
1.185
23.3
.917
15.7
.618
23.3
.917
30.1
1.185
15.7
.618
FEATURES
1. Ideal for compressor and inverter
loads
1) Compressor load: 20A 250V AC
2)
Inv erter load: 20A 100V A C , 10A 200V AC
2. High insulation resistance
• Creepage distance and clearances
between contact and coil;
Creepage Min. 9.5mm .374inch/Clear-
ance Min. 8mm .315inch
• Surge withstand voltage: Min. 10,000V
3. "PCB" and "TMP" types available
4. Conforms to the various safety
standards:
UL/CSA, TÜV, VDE approv ed
SPECIFICATIONS
Contact
Coil
Characteristics
Arrangement 1 Form A
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A) 100 m
Ω
Contact material Silver alloy
Rating
(resistive load)
Nominal switching
capacity 20 A 250V AC
Max. switching
power 6,250 V A
Max. switching
voltage 250V AC
Max. switching
current 25 A
Expected life
(min. operations)
Mechanical
(at 180 cpm) 2
×
10
6
Electrical
(at 20 cpm)
(Resistive load) 10
5
Nominal operating power 900 mW
Max. operating speed
(at rated load) 20 cpm
Initial insulation resistance*
1
Min. 1,000 M
Ω
(at 500 V DC)
Initial breakdown
voltage*
2
Between open
contacts 1,000 Vrms for 1 min.
Between contacts
and coil 5,000 Vrms for 1 min.
Surge voltage between contact and
coil*
3
Min. 10,000 V
Operate time*
4
(at nominal voltage) Approx. 15ms
Release time (without diode)*
4
(at nominal voltage) Approx. 15ms
Temperature rise
(at nominal voltage)
Max. 45
°
C
(resistance method, contact
current 20 A, rated coil
voltage, 60
°
C 140
°
F)
Shock
resistance Functional*
5
Min. 100 m/s
2
{10 G}
Destructive*
6
Min. 1,000 m/s
2
{100 G}
Vibration
resistance
Functional*
7
10 to 55Hz
at double amplitude of 1.5mm
Destructive 10 to 55Hz
at double amplitude of 1.5mm
Conditions for
operation, trans-
port and storage*
8
(Not freezing and
condensing at low
temperature)
Ambient temp. –40
°
C to +60
°
C
–40
°
F to +140
°
F
Humidity 5 to 85% R.H.
Unit weight Approx. 23 g .81 oz
Remarks
* Specifications will vary with foreign standards certification ratings.
*
1
Measurement at same location as "Initial breakdown voltage" section.
*
2
Detection current: 10mA
*
3
W a ve is standard shoc k v oltage of
±
1.2
×
50
µ
s according to JEC-212-1981
*
4
Excluding contact bounce time.
*
5
Half-wave pulse of sine wave: 11 ms; detection time: 10
µ
s
*
6
Half-wave pulse of sine wave: 6 ms
*
7
Detection time: 10
µ
s
*
8
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 24).
TYPICAL
APPLICATIONS
• Air conditioner
• Refrigerators
• OA equipment
ORDERING INFORMATION
Product Name
LF Contact arrangement Terminal shape Coil voltage, V DC
1: 1 Form A
Note: Standard packing; Carton: 50 pcs. Case 200 pcs.
UL/CSA,VDE, TÜV approved type is standard.
T: TMP type
P: PCB type 05: 5 12: 12
06: 6 18: 18
09: 9 24: 24
Ex. A LF 1 T 12
LF-RELAYS
20A Power Relay For
Home appliances
VDE
LF
41
TYPES
Contact
arrangement Coil voltage,
V DC TMP type PCB type
1 Form A
5 ALF1T05 ALF1P05
6 ALF1T06 ALF1P06
9 ALF1T09 ALF1P09
12 ALF1T12 ALF1P12
18 ALF1T18 ALF1P18
24 ALF1T24 ALF1P24
COIL DATA
Nominal voltage,
V DC Pick-up voltage,
V DC (max.) Drop-out voltage,
V DC (min.) Coil resistance,
Ω
(
±
10%)
Nominal operating
current, mA
(
±
10%)
Nominal operating
power, W Maximum allow-
able voltage, V DC
5 3.5 0.5 27.8 180
0.9
5.5
6 4.2 0.6 40 150 6.6
9 6.3 0.9 90 100 9.9
12 8.4 1.2 160 75 13.2
18 12.6 1.8 360 50 19.8
24 16.8 2.4 640 37.5 26.4
DIMENSIONS
mm inch
1. TMP type
22.0
.866
27.6
1.087
30.1
1.185
15.7
.618
12.0
.472
0.5
.020
23.3
.917
4.0
.157
3 NO COM 4
12
2.0
.079
12.8
.504
11.25
.443 6.4
.252
#250 terminal
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
PC board pattern (Bottom view)
Tolerance :
±
0.1
±
.004
Schematic (Bottom view)
4-1.8 dia.
4-.071 dia.
±.004
1.087±0.1
27.6
±0.1
13.8±.004
.543
±0.1
12.0 ±0.1
10.0
±.004
.472 ±.004
.394
±0.1
12.0±.004
.472
NO COM
FASTON 250
PC board side
2. PCB type
22.0
.866
27.6
1.087
30.1
1.185
15.7
.618
12.0
.472
0.5
.020
23.3
.917
4.0
.157
3 NO COM 4
12
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
PC board pattern (Bottom view)
Tolerance :
±
0.1
±
.004
Schematic (Bottom view)
±.004
1.087±0.1
27.6
±0.1
13.8±.004
.543
±0.1
12.0 ±0.1
10.0
±.004
.472 ±.004
.394
±0.1
12.0±.004
.472
4-1.8 dia.
4-.071 dia.
NO COM
LF
42
REFERENCE DATA
1. Coil temperature rise
Sample: ALF1T12, 6 pcs.
Point measured: coil inside
Contact current: 20A
Ambient temperature: 25
°
C
77
°
F, 60
°
C 140
°
F
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:
Coil applied voltage, %V
80 100 120
70
158
60
140
50
122
40
104
30
86
20
68
10
50
0
32
60°C 140°F
25°C 77°F
Temperature rise, °C °F
1.9Ω
LF relay contact
Switch
2,000µF
200V AC
063
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations, ×104
Contact welding: 0 times
Miscontact: 0 times
Drop-out voltage
Pick-up voltage
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
2,000µF
470µF
470µF
100V AC
063
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations, ×104
Drop-out voltage
Pick-up voltage
Contact welding: 0 times
Miscontact: 0 times
2-(3). Inrush 70.7A, Steady 20A, 250V AC
electrical life test
(Compressor dummy load)
Sample: ALF1T12, 3 pcs.
Load: Inrush 70.7A, cos
φ
= 0.7
Steady 20A, cos
φ
0.9
250V AC compressor dummy
Switching frequency: ON 1.5s, OFF 1.5s
Circuit:
2-(4). Electr ical life test
(20A 250V AC, resistive load)
Sample: ALF1T12, 6 pcs.
Switching frequency: ON 1.5s, OFF 1.5s
SW1
NO
Mg Detection
Circuit
Contact Weld
Min. 0.5s
Miss Contact
after 0.2s
COM
250V AC
60Hz
G
12V DC
(–)
(+)
0105
0
2
4
6
8
10
12
Max.
Min.
x
Max.
Min.
x
Pick-up and drop-out voltage, V
No. of operations, ×104
Drop-out voltage
Pick-up voltage
Contact welding: 0 times
Miscontact: 0 times
02010
0
2
4
6
8
10
Pick-up and drop-out voltage, V
No. of operations, ×104
12
Drop-out voltage
Pick-up voltage
Max.
Min.
x
Max.
Min.
x
Contact welding: 0 times
Miscontact: 0 times
For Cautions for Use, see Relay Technical Information (Page 11 to 39).
