LD
47
LD-RELAYS
1 Form A Slim Power Relay
mm inch
15.0
.591
20.3
.799
7.0
.276
FEATURES
1. Slim type: Width 7 mm .276 inch.
20.3(L)
×
7.0(W)
×
15.0(H) mm
.799(L)
×
.276(W)
×
.591(H) inch
2. Perfect for small load switching of
home appliances
10
5
switching operations possible with a
3A 250V AC resistive load.
3. Low operating power
Compact size, nominal operating power
as low as 200mW.
4. High shock resistance
The relay withstands a functional shock
resistance of 300m/s
2
[approx. 30 G
more]
5. High insulation resistance
• Creepage distance and clearances be-
tween contact and coil: Min. 6 mm .236
inch(In compliance with IEC65)
• Surge withstand voltage between con-
tact and coil: 10,000 V or more.
6. UL/CSA, VDE, TÜV approved.
SPECIFICATIONS
Contact
Coil
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
×
50ms 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).
Characteristics
Arrangement 1 Form A
Initial contact resistance, max.
(By voltage drop 6 V DC 1 A) Max. 100 m
Ω
Contact material Silver alloy
Rating
(resistive load)
Nominal switching capacity 3 A 277 V AC, 3 A
30V DC
Max. switching power 831 V A (AC),
90W (DC)
Max. switching voltage 277 V AC, 30 V DC
Max. switching current 3 A
Expected life
(min.operations)
Mechanical (at 180 cpm) 5
×
10
6
Electrical
(at 20 cpm)
(at rated load)
3A 125V AC,
3A 30V DC 2
×
10
5
3A 250V AC 10
5
Nominal operating power 200 mW
Max. operating speed 20 cpm (at rated load)
Initial insulation resistance*
1
Min. 1,000 M
Ω
(at 500 V DC)
Initial*
2
breakdown
voltage
Between open
contacts 750 Vrms for 1 min.
Between contact and
coil 4,000 Vrms for 1 min.
Initial surge voltage betw een contact
and coil*
3
Min. 10,000 V
Operate time*
4
(at nominal voltage) Max. 10ms (at 20
°
C 68
°
F)
Release time (with diode)*
4
(at nominal voltage) Max. 10ms (at 20
°
C 68
°
F)
Temperature rise (at 70
°
C) Max. 45
°
C with nominal coil
voltage and at 3 A contact
carrying current
(resistance method)
Shock resistance Functional*
5
Min. 300 m/s
2
{approx. 30 G}
Destructive*
6
Min. 1,000 m/s
2
{approx. 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,
transport and storage*
8
(Not freezing and con-
densing at low tempera-
ture)
Ambient
temp. –40
°
C to +70
°
C
–40
°
F to +158
°
F
Humidity 5 to 85% R.H.
Unit weight Approx. 4 g .141 oz
TYPICAL
APPLICATIONS
• Air conditioner
• Refrigerator
• Hot water units
• Microwave ovens
• Fan heaters
ORDERING INFORMATION
Contact arrangement Coil voltage(V DC)
1: 1 Form A 4H: 4.5,
05: 5,
06: 6,
1
Product name
LD
UL/CSA, TÜV approved type is standard.
Note: Standard packing: Carton: 50pcs, Case: 1,000pcs
Ex. LDA12
09: 9,
12: 12
18: 18
24: 24
VDE
LD
48
TYPES AND COIL DATA (at 20
°
C 68
°
F)
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
currrent,
mA (
±
10%)
Nominal
operating pow er ,
mW
Maximum allow-
able voltage,
V DC
(at 20°C 68°F)
ALD14H 4.5 3.38 0.22 101 44.6 200 5.85
ALD105 5 3.75 0.25 125 40.0 200 6.5
ALD106 6 4.5 0.3 180 33.3 200 7.8
ALD109 9 6.75 0.45 405 22.2 200 11.7
ALD112 12 9 0.6 720 16.7 200 15.6
ALD118 18 13.5 0.9 1,620 11.1 200 23.4
ALD124 24 18 1.2 2,880 8.3 200 31.2
DIMENSIONS
mm inch
0.4 dia
016 dia
0.4
.016
0.8
.031 1.15
.045
4.7
.185
0.2
.008
0.2
.008
3.4
.134
Max. 20.5
.807
Max. 15.3
.602
Max. 7.2
.284
11.5
.453
1.05
.041 7.0
.276
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)
4-1.1 dia
4-.043 dia
(1.15)
(.045)
(1.05)
(.041) 11.5
.453
4.7
.185
7.0
.276
COIL
COM NO
REFERENCE DATA
1. Max. switching power 2. Life curve 3. Coil temperature rise
Sample: ALD112, 6 pcs.
Point measured: inside the coil
Contact current: 0 A, 3 A
0.2
0.3
0.4
0.5
1.0
2.0
3.0
20 30 50 100 200 3000
Contact voltage, V
Contact current, A
AC resistive load
DC resistive load
0
10
30
50
100
123
125V AC
resistive load
Contact current, A
Life, ×104
Coil applied voltage, %V
Temperature rise, °C
70°C
1000 125 175150
70
60
50
40
30
20
10
0
3A
0A
Room temperature
4-(1). Operate time
Sample: ALD112, 6 pcs.
4-(2). Release time (without diode)
Sample: ALD112, 6 pcs.
4-(3). Release time (with diode)
Sample: ALD112, 6 pcs.
Coil applied voltage, %V
Operate time, ms
80 100 140120
10
8
6
4
2
0
Max.
Min.
Coil applied voltage, %V
Release time, ms
80 100 140120
10
8
6
4
2
0
Max.
Min.
Coil applied voltage, %V
Release time, ms
80 100 140120
10
8
6
4
2
0
Max.
Min.
LD
49
5-(1). Electrical life test
(3 A 250 V AC, resistive load)
Sample: ALD112, 6 pcs.
Operating speed: 20 cpm
Ambient temperature: room temperature
circuit:
Change of pick-up and drop-out voltage Change of contact resistance
250V AC
60Hz
G
12V DC
NO COM 0
20
10
40
60
80
30
50
70
90
100
0
Pick-up voltage
Drop-out voltage
Max.
Min.
Max.
Min.
No. of operations, ×104
Ratio against the rated voltage, %V
10 0
10
20
30
40
50
60
70
80
90
100
0
Max.
Min.
10
No. of operations, ×104
Contact resistance, mΩ
5-(2). Electrical life test
(3 A 30 V DC, resistive load)
Sample: ALD112, 6 pcs.
Operating speed: 20 cpm
Ambient temperature: room temperature
circuit:
Change of pick-up and drop-out voltage Change of contact resistance
30V DC
G
12V DC
NO COM 0
20
10
40
60
80
30
50
70
90
100
020
Pick-up voltage
Drop-out voltage
Max.
Min.
Max.
Min.
10
No. of operations, ×104
Ratio against the rated voltage, %V
0
10
20
30
40
50
60
70
80
90
100
020
Max.
Min.
No. of operations, ×104
Contact resistance, mΩ
10
For Cautions for Use, see Relay Technical Information (Page 11 to 39).
