VDE
10 A MINIATURE
POWER RELAY
20
.787
12.5
.492
20
.787
• Large capacity in small size: 10 A 250 V AC (1a)
• High sensitivity: 200 mW nominal operating power
• High breakdown voltage 4,000 Vrms between contacts and
coil 1,000 Vrms between open contacts Meeting FCC Part 68
• Sealed construction
• Latching types available
10
.394
1a
DK RELAYS
FEATURES
15
.591
10
.394
DK
1a1b
mm inch
SPECIFICATIONS
Contact
Arrangement
Initial contact resistance, max.
(By voltage drop 6 V DC 1A)
Contact material
Nominal
switching capacity
Max. switching
power
Rating
Max. switching
(resistive)
voltage
Max. switching
current
Min. switching
capacity#1
Mechanical
Expected
life (min.
Electrical
operations) (resistive)
Characteristics
2 Form A,
1 Form A
1 Form B
1 Form A
Max. operating speed
Initial insulation resistance*1
Between open
Initial
contacts
breakdown
Between contacts
voltage*2
and coil
Surge voltage between coil and
contact*3
30 mΩ
Gold flash over silver alloy
10 A 250 V AC
8 A 250 V AC
10 A 30 V DC
8 A 30 V DC
300 W, 2,500 VA
240 W, 2,000 VA
250 V AC,
30 V DC
250 V AC,
30 V DC
10 A
8A
Vibration
resistance
Coil
Min. 10,000 V
Remarks
* Specifications will vary with foreign standards certification ratings.
*1 Measurement at same location as “Initial breakdown voltage” section
*2 Detection current: 10 mA
*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: 11ms; detection time: 10µs
*6 Half-wave pulse of sine wave: 6ms
*7 Detection time: 10µs
*8 Refer to 6. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT
Unit
weight
Max. 10 ms (Approx. 5 ms)
Max. 8 ms (Approx. 3 ms)
Ambient
temp.
Max. 40°C with nominal coil voltage
and at 10 A switching current
Min. 98 m/s2 {10 G}
Min. 980 m/s2 {100 G}
88.2 m/s2 {9 G}, 10 to 55 Hz
at double amplitude of 1.5 mm
176.4 m/s2 {18 G}, 10 to 55 Hz
at double amplitude of 3.0 mm
–40°C to +65°C
–40°F to +149°F
Humidity
5 to 85% R.H.
Functional*7
Destructive
Conditions for
operation, transport
and storage*8
(Not freezing and
condensing at low
temperature)
200 mW
#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.
• Switching power supply
• Power switching for various
OA equipment
• Control or driving relays for industrial
machines (robotics, numerical control
machines, etc.)
• Output relays for programmable logic
controllers, temperature controllers,
timers and so on.
• Home appliances
4,000 Vrms
Operate time*
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Temperature rise
(at nominal voltage)
Functional*5
Shock
resistance Destructive*6
5×107
105
105
(10 A 250 V AC,
(8 A 250 V AC,
10 A 30 V DC)
8 A 30 V DC)
TYPICAL APPLICATIONS
1,000 Vrms
4
10 mA, 5 V DC
Nominal operating power
20 cpm (at rated load)
Min. 1,000 mΩ (at 500 V DC)
1 Form A
1 Form A 1 Form B,
2 Form A
Approx. 5.6 g .20 oz
Approx. 6 g .21 oz
ORDERING INFORMATION
Ex. DK
Contact arrangement
1a: 1 Form A
2a: 2 Form A
1a1b: 1 Form A 1 Form B
1a
L2
12V
Operating function Coil voltage
Nil: Single side
stable
L2: 2 coil latching
3, 5, 6, 9,
12, 24V
Environmental support
• RoHS Directive conforming type (AgSnO2 type)
F: 1a
Nil: 2a, 1a1b
• RoHS Directive non-conforming type (AgCdO type)
Nil: 1a
Notes: 1. Standard packing Carton: 50 pcs.; Case: 500 pcs.
UL/CSA, TÜV approved type is standard.
2. 1 coil latching type available.
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.
F
DK
TYPES AND COIL DATA (at 20°C 68°F)
Single side stable
Nominal
voltage,
V DC
Pick-up
voltage,
V DC (max.)
Drop-out
voltage,
V DC (min.)
Nominal
operating
current,
mA (±10%)
Coil
resistance,
Ω (±10%)
Nominal
operating
power,
mW
3
5
6
9
12
24
3
5
6
9
12
24
3
5
6
9
12
24
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
0.3
0.5
0.6
0.9
1.2
2.4
0.3
0.5
0.6
0.9
1.2
2.4
0.3
0.5
0.6
0.9
1.2
2.4
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
45
125
180
405
720
2,880
45
125
180
405
720
2,880
45
125
180
405
720
2,880
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
Part No.
Nominal
voltage,
V DC
Set voltage,
V DC (max.)
Reset voltage,
V DC (max.)
Nominal
operating
current,
mA (±10%)
Coil
resistance,
Ω (±10%)
DK1a-L2-3V (-F)
DK1a-L2-5V (-F)
DK1a-L2-6V (-F)
DK1a-L2-9V (-F)
DK1a-L2-12V (-F)
DK1a-L2-24V (-F)
DK1a1b-L2-3V
DK1a1b-L2-5V
DK1a1b-L2-6V
DK1a1b-L2-9V
DK1a1b-L2-12V
DK1a1b-L2-24V
DK2a-L2-3V
DK2a-L2-5V
DK2a-L2-6V
DK2a-L2-9V
DK2a-L2-12V
DK2a-L2-24V
3
5
6
9
12
24
3
5
6
9
12
24
3
5
6
9
12
24
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
Part No.
1 Form A
1 Form A
1 Form B
2 Form A
DK1a-3V (-F)
DK1a-5V (-F)
DK1a-6V (-F)
DK1a-9V (-F)
DK1a-12V (-F)
DK1a-24V (-F)
DK1a1b-3V
DK1a1b-5V
DK1a1b-6V
DK1a1b-9V
DK1a1b-12V
DK1a1b-24V
DK2a-3V
DK2a-5V
DK2a-6V
DK2a-9V
DK2a-12V
DK2a-24V
Maximum
allowable
voltage,
V DC (at 65°C
149°F)
3.9
6.5
7.8
11.7
15.6
31.2
3.9
6.5
7.8
11.7
15.6
31.2
3.9
6.5
7.8
11.7
15.6
31.2
2 coil latching
1 Form A
1 Form A
1 Form B
2 Form A
Set
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
Reset
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
Set
45
125
180
405
720
2,880
45
125
180
405
720
2,880
45
125
180
405
720
2,880
Reset
45
125
180
405
720
2,880
45
125
180
405
720
2,880
45
125
180
405
720
2,880
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.
Nominal
operating
power,
mW
Set
Reset
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
Maximum
allowable
voltage,
V DC (at 65°C
149°F)
3.9
6.5
7.8
11.7
15.6
31.2
3.9
6.5
7.8
11.7
15.6
31.2
3.9
6.5
7.8
11.7
15.6
31.2
DK
REFERENCE DATA
1. 1 Form A type
1. Maximum operating power
2. Life curve
3. Operate/Release time
Sample: DK1a-24V, 5 pcs.
1,000
100
9
1
DC inductive load
(L/R = 7 ms)
DC resistive
load
Operate/release time, ms
10
AC resistive load
Life, ×104
Contact current, A
8
AC inductive load
(cosϕ = 0.4)
100
250 V AC resistive load
30 V DC resistive load
10
250 V AC inductive load (cosϕ = 0.4)
30 V DC inductive load (L/R = 7 ms)
Operate time
7
6
4
Release time
(with diode)
3
Max.
x
Min.
2
1
0.1
10
100
Contact voltage, V
1
1,000
0
1
2
3
4
5
6
7
8
Max.
x
Max.
x
Min.
Min.
5
9
0
10
Release time
80
90
10
Contact voltage, V
110
120
130
6. Operate/Release time (at 20°C 68°F)
Sample: DK1a-24V, 6 pcs
Ambient temperature: –40°C to +80°C
–40°F to +176°F
Sample: DK1a-24V (50 pcs.)
40
10 A
7A
5A
0A
30
–40 –20
20
30
130
Release time
Drop-out
voltage
Distribution frequency
Variation ratio, %
5. Ambient temperature characteristics
Sample: DK1a-12V, 5 pcs.
Coil temperature rise, °C
4. Coil temperature rise (at 30°C 68°F)
50
140
Coil applied voltage,%V
120
110
Pick-up
voltage
100
0
20 40 60 80
Ambient
90
temperature,°C
Operate time
20
10
80
10
0
70
80
90
0
100 110 120 130
Coil applied voltage,%V
1
2
3
4
5
6
Operate/release time, ms
7. Contact resistance (at 20°C 68°F)
Distribution frequency
Sample: DK1a-24V (50 pcs.)
26
24
22
20
18
16
14
12
10
8
6
4
2
0
1.5 2.5 3.5 4.5
2.0 3.0 4.0 5.0
Contact resistance, mΩ
2. 1 Form A 1 Form B type, 2 Form A type1. 1 Form A type
1. Maximum operating power
2. Life curve
3. Operate/Release time (at 20°C 68°F)
Sample: DK1a1b-12V, 5 pcs.
1,000
9
Release time
(with diode)
AC inductive load
(cosϕ = 0.4) AC resistive load
5
1
DC inductive load
(L/R = 7 ms)
DC resistive
load
Operate/release time, ms
10
Life, ×104
Contact current, A
8
100
250 V AC resistive load
30 V DC resistive load
10
250 V AC inductive load (cosϕ = 0.4)
30 V DC inductive load (L/R = 7 ms)
Max.
x
Min.
7
6
5
4
Max.
x
Min.
Max.
x
Min.
Operate time
3
Release time
2
1
0.1
10
100
Contact voltage, V
1,000
1
0
1
2
3
4
5
6
7
8
9
10
Contact current, A
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.
0
80
90
10
110
120
130
Coil applied voltage,%V
140
DK
4. Coil temperature rise
5. Ambient temperature characteristics
Variation ratio, %
Coil temperature rise, °C
Sample: DK1a1b-12V, 5 pcs.
Ambient temperature: 20°C 68°F
50
40
8A
5A
0A
30
–40 –20
Pick-up
voltage
130
120
110
0 100
40
20
90
20
0
80
Ambient
temperature,°C
Drop-out
voltage
80
10
60
70
80
90
100 110 120 130
Coil applied voltage,%V
DIMENSIONS
mm inch
1. 1 Form A type
Single side stable type
PC board pattern (Copper-side view)
20
.787
12.5
.492
2.54
.100
7.62
.300
1.1 dia.
.043 dia.
7.62
.300
Schematic
(Bottom view)
Single side stable
(Deenergized condition)
9.7
.382
0.3
.012
1
3.5
.138
0.4
.016
0.8
.031
10.16
.400
0.4
.016
0.8
.031
+
10.16
.400
2 coil latching type
20
.787
12.5
.492
2.54
.100
7.62
.300
2 coil latching
(Reset condition)
1.1 dia.
.043 dia.
7.62
.300
1
-
9.7
.382
0.3
.012
3.5
.138
0.4
.016
0.4
.016
2.54
.100
0.8
.031
7.62
.300
0.4
.016
0.8
.031
1.2
.047
1.11
.044
7.62
.300
4
6
1.2
.047
1.11
.044
7.62
.300
10.16
.400
3
10.16
.400
10.16
.400
The above shows 2 coil latching type.
No.5 terminal is eliminated on single side
stable type.
General tolerance: ±0.3 ±.012
3
+
+
6
5
4
Since this is a polarized relay,
the connection to the coil
should be done according to
the above schematic.
Tolerance: ±0.1 ±.004
2. 1 Form A 1 Form B type, 2 Form A type
Single side stable type
PC board pattern (Copper-side view)
20
.787
15
.591
10.16
.400
7.62
.300
1.1 dia.
.043 dia.
9.7
.382
0.3
.012
0.4
.016
0.8
.031
10.16
.400
7.62
.300
0.8
.031
1.11
.044
2.42
.095
10.16
.400
Single side stable
(Deenergized condition)
1
-
10.16
.400
3.5
.138
Schematic (Bottom view)
<1 Form A 1 Form B type>
3
4
6
5
+
0.4
.016
8
2 coil latching type
15
.591
2.54
.100
7.62
.300
7.62
.300
1.1 dia.
.043 dia.
Single side stable
(Deenergized condition)
1
-
9.7
.382
0.4
.016
2.54
.100
0.6
.024
7.62
.300
0.8
.031
7.62
.300
3.5
.138
0.8
.031
2.42
1.11
.044
.095
1
+
+
8
7
3
4
6
5
<2 Form A>
20
.787
0.3
.012
2 coil latching
(Reset condition)
8
0.4
.016
6
5
1
+
+
8
7
3
4
6
5
Since this is a polarized relay, the connection
to the coil should be done according to the
above schematic.
Note:
Relay out-line and PC board pattern are common for both
1 Form A 1 Form B type and 2 Form A type.
General tolerance: ±0.3 ±.012
4
+
10.16
.400
10.16
.400
3
2 coil latching
(Reset condition)
Tolerance: ±0.1 ±.004
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.
DK
DK relay socket
TYPES AND RELAY COMPATIBILITY
Socket
Relay
Single side stable type
2 coil latching type
Single
side stable type
1 Form A 1 Form B
2 Form A
2 coil latching type
1 Form A
1 Form A
1 Form A 1 Form B, 2 Form A
Single side
2 coil
Single side
2 coil
stable type
latching type
stable type
latching type
DK1a-PS
DK1a-PSL2
—
—
—
DK1a-PSL2
—
—
—
—
DK2a-PS
DK2a-PSL2
—
—
—
DK2a-PSL2
SPECIFICATIONS
Breakdown voltage*1
Insulation resistance
Heat resistance
Max. continuous current
4,000 Vrms (Except the portion between coil terminals)
Min. 1,000 mΩ (at 500 V DC)
150°C (for 1 hour)
10 A (DK1a-PS, DK1a-PSL2), 8 A (DK2a-PS, DK2a-PSL2)
Remarks
*1 Detection current: 10 mA
DIMENSIONS
mm inch
1 Form A type
PC board pattern (Copper-side view)
1 Form A
1 Form A 1 Form B type, 2 Form A type
15±0.6
.591±.024
15±0.6
.591±.024
23±0.6
.906±.024
23±0.6
.906±.024
1
2
6
5
3
4
1.2 dia.
.047 dia.
2.54
.100
2.54
.100
1 Form A 1 Form B
17±0.6
.669±.024
13.7±0.6
.539±.024
17±0.6
.669±.024
6±0.3
.236±.012
0.3±0.1
.012±.004
2.54±0.1
.100±.004
0.8
.031
7.62±0.3 7.62±0.3
.300±.012 .300±.012
3.4±0.3
.134±.012
13.7±0.6
.539±.024
6±0.3
.236±.012
0.25
.010
10.16±0.3
.400±.012
3.4±0.3
.134±.012
0.3±0.1
.012±.004
7.62±0.3 10.16±0.3
.300±.012 .400±.012
1
2
3
4
8
7
6
5
1.2 dia.
.047 dia.
2.54
.100
10.16±0.3
.400±.012
2.54
.100
The above shows 2 coil latching type. No.2 and 5
terminal are eliminated on single side stable type.
General tolerance: ±0.3 ±.012
Tolerance: ±0.1 ±.004
FIXING AND REMOVAL METHOD
1. Match the direction of relay
and socket.
2. Both ends of the relay are
to be secured firmly so that
the socket hooks on the top
surface of the relay.
GOOD
3. Remove the relay, applying
force in the direction shown
below.
4. In case there is not enough
space to grasp relay with
fingers, use screwdrivers in
the way shown below.
NO GOOD
NOTES
1. Phase synchronization of AC-load
switching
In case of switching the contact
synchronized with phase of load voltage,
the life of contact might be shorter or
contact failure might be caused. Please
confirm this matter in the actual system in
this case. If necessary, the phase control
would be recommended.
Ry
Load
Vin
Load
voltage
2. Soldering should be done under the
following conditions:
250°C 482°F within 10s
300°C 572°F within 5s
350°C 662°F within 3s
Load
voltage
Vin
For Cautions for Use, see Relay Technical Information
All Rights Reserved © COPYRIGHT Matsushita Electric Works, Ltd.