239
DK-RELAYS
MINIATURE POWER RELAY
VDE
1a
1a1b
mm
inch
12.5
.492
10
.394
20
.787
15
.591
10
.394
20
.787
FEATURES
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
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: 10 mA
*
3
Wave is standard shock voltage of
1.2
50
s according to JEC-212-1981
*
4
Excluding contact bounce time
*
5
Half-wave pulse of sine wave: 11ms; detection time: 10
s
*
6
Half-wave pulse of sine wave: 6ms
*
7
Detection time: 10
s
*
8
Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61).
Characteristics
Arrangement
1 Form A
2 Form A,
1 Form A
1 Form B
Initial contact resistance, max.
(By voltage drop 6 V DC 1A)
30 m
Contact material
Gold flash over silver alloy
Rating
(resistive)
Nominal
switching capacity
10 A 250 V AC
10 A 30 V DC
8 A 250 V AC
8 A 30 V DC
Max. switching
power
300 W, 2,500 VA
240 W, 2,000 VA
Max. switching
voltage
250 V AC,
30 V DC
250 V AC,
30 V DC
Max. switching
current
10 A
8 A
Expected
life (min.
operations)
Mechanical
5
10
7
Electrical
(resistive)
10
5
(10 A 250 V AC,
10 A 30 V DC)
10
5
(8 A 250 V AC,
8 A 30 V DC)
Nominal operating power
200 mW
Max. operating speed
20 cpm (at rated load)
Initial insulation resistance*
1
Min. 1,000 m
(at 500 V DC)
Initial
breakdown
voltage*
2
Between open
contacts
1,000 Vrms
Between contacts
and coil
4,000 Vrms
Surge voltage between coil and
contact*
3
Min. 10,000 V
Operate time*
4
(at nominal voltage)
Max. 10 ms (Approx. 5 ms)
Release time (without diode)*
4
(at nominal voltage)
Max. 8 ms (Approx. 3 ms)
Temperature rise
(at nominal voltage)
Max. 40
C with nominal coil voltage
and at 10 A switching current
Shock
resistance
Functional*
5
Min. 98 m/s
2
{10 G}
Destructive*
6
Min. 980 m/s
2
{100 G}
Vibration
resistance
Functional*
7
88.2 m/s
2
{9 G}, 10 to 55 Hz
at double amplitude of 1.5 mm
Destructive
176.4 m/s
2
{18 G}, 10 to 55 Hz
at double amplitude of 3.0 mm
Conditions for oper-
ation, transport and
storange*
8
(Not freezing and
condensing at low
temperature)
Ambient
temp.
40
C to +65
C
40
F to +149
F
Humidity
5 to 85% R.H.
Unit
weight
1 Form A
Approx. 5.6 g
.20 oz
1 Form A 1 Form B,
2 Form A
Approx. 6 g
.21 oz
TYPICAL
APPLICATIONS
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
ORDERING INFORMATION
Ex. DK
Note: Standard packing Carton: 50 pcs.; Case: 500 pcs.
UL/CSA, TV approved type is standard.
1a
L2
12V
Contact arrangement
1a: 1 Form A
2a: 2 Form A
1a1b: 1 Form A 1 Form B
Nil: Single side stable
L2: 2 coil latching
3, 5, 6, 9, 12, 24V
Operating function
Coil voltage
DK
240
TYPES AND COIL DATA (at 20
C
68
F
)
Single side stable
2 coil latching
Part No.
Nominal
voltage,
V DC
Pick-up
voltage,
V DC (max.)
Drop-out
voltage,
V DC (min.)
Nominal
operating
current,
mA (
10%)
Coil
resistance,
(
10%)
Nominal
operating
power,
mW
Maximum
allowable
voltage,
V DC (at 65
C
149F
)
1 Form A
DK1a-3V
3
2.1
0.3
66.6
45
200
3.9
DK1a-5V
5
3.5
0.5
40
125
200
6.5
DK1a-6V
6
4.2
0.6
33.3
180
200
7.8
DK1a-9V
9
6.3
0.9
22.2
405
200
11.7
DK1a-12V
12
8.4
1.2
16.6
720
200
15.6
DK1a-24V
24
16.8
2.4
8.3
2,880
200
31.2
1 Form A
1 Form B
DK1a1b-3V
3
2.1
0.3
66.6
45
200
3.9
DK1a1b-5V
5
3.5
0.5
40
125
200
6.5
DK1a1b-6V
6
4.2
0.6
33.3
180
200
7.8
DK1a1b-9V
9
6.3
0.9
22.2
405
200
11.7
DK1a1b-12V
12
8.4
1.2
16.6
720
200
15.6
DK1a1b-24V
24
16.8
2.4
8.3
2,880
200
31.2
2 Form A
DK2a-3V
3
2.1
0.3
66.6
45
200
3.9
DK2a-5V
5
3.5
0.5
40
125
200
6.5
DK2a-6V
6
4.2
0.6
33.3
180
200
7.8
DK2a-9V
9
6.3
0.9
22.2
405
200
11.7
DK2a-12V
12
8.4
1.2
16.6
720
200
15.6
DK2a-24V
24
16.8
2.4
8.3
2,880
200
31.2
Part No.
Nominal
voltage,
V DC
Set voltage,
V DC (max.)
Reset voltage,
V DC (max.)
Nominal
operating
current,
mA (
10%)
Coil
resistance,
(
10%)
Nominal
operating
power,
mW
Maximum
allowable
voltage,
V DC (at 65
C
149F
)
Set
Reset
Set
Reset
Set
Reset
1 Form A
DK1a-L2-3V
3
2.1
2.1
66.6
66.6
45
45
200
200
3.9
DK1a-L2-5V
5
3.5
3.5
40
40
125
125
200
200
6.5
DK1a-L2-6V
6
4.2
4.2
33.3
33.3
180
180
200
200
7.8
DK1a-L2-9V
9
6.3
6.3
22.2
22.2
405
405
200
200
11.7
DK1a-L2-12V
12
8.4
8.4
16.6
16.6
720
720
200
200
15.6
DK1a-L2-24V
24
16.8
16.8
8.3
8.3
2,880
2,880
200
200
31.2
1 Form A
1 Form B
DK1a1b-L2-3V
3
2.1
2.1
66.6
66.6
45
45
200
200
3.9
DK1a1b-L2-5V
5
3.5
3.5
40
40
125
125
200
200
6.5
DK1a1b-L2-6V
6
4.2
4.2
33.3
33.3
180
180
200
200
7.8
DK1a1b-L2-9V
9
6.3
6.3
22.2
22.2
405
405
200
200
11.7
DK1a1b-L2-12V
12
8.4
8.4
16.6
16.6
720
720
200
200
15.6
DK1a1b-L2-24V
24
16.8
16.8
8.3
8.3
2,880
2,880
200
200
31.2
2 Form A
DK2a-L2-3V
3
2.1
2.1
66.6
66.6
45
45
200
200
3.9
DK2a-L2-5V
5
3.5
3.5
40
40
125
125
200
200
6.5
DK2a-L2-6V
6
4.2
4.2
33.3
33.3
180
180
200
200
7.8
DK2a-L2-9V
9
6.3
6.3
22.2
22.2
405
405
200
200
11.7
DK2a-L2-12V
12
8.4
8.4
16.6
16.6
720
720
200
200
15.6
DK2a-L2-24V
24
16.8
16.8
8.3
8.3
2,880
2,880
200
200
31.2
DK
241
REFERENCE DATA
1. 1 Form A type
1. Maximum operating power
2. Life curve
3. Operate/Release time
Sample: DK1a-24V, 5 pcs.
AC resistive load
DC resistive
load
DC inductive load
(L/R = 7 ms)
AC inductive load
(cos
= 0.4)
Contact voltage, V
Contact current, A
10
100
1,000
0.1
1
10
100
0
1
2
3
4
5
6
7
8
9
10
10
100
1,000
1
Life,
10
4
Contact voltage, V
250 V AC resistive load
30 V DC resistive load
250 V AC inductive load (cos
= 0.4)
30 V DC inductive load (L/R = 7 ms)
80
90
10
110
120
130
140
0
1
2
3
4
5
6
7
8
9
Coil applied voltage,%V
Operate/release time, ms
Release time
(with diode)
Operate time
Release time
x
x
Max.
Min.
Max.
Max.
Min.
Min.
x
4. Coil temperature rise (at 30
C
68
F
)
Sample: DK1a-12V, 5 pcs.
5. Ambient temperature characteristics
Sample: DK1a-24V, 6 pcs
Ambient temperature: -40
C to +80
C
40
F to
+176
F
6. Operate/Release time (at 20
C
68
F
)
Sample: DK1a-24V (50 pcs.)
7 A
5 A
10 A
0 A
80
90
100 110 120 130
0
10
20
30
40
50
Coil temperature rise,
C
Coil applied voltage,%V
100
20
130
120
110
90
80
70
40
60
80
0
20
40
Ambient
temperature,
C
Variation ratio, %
Drop-out
voltage
Pick-up
voltage
0
10
20
30
Operate/release time, ms
Distribution frequency
1
2
3
4
5
6
Operate time
Release time
7. Contact resistance (at 20
C
68
F
)
Sample: DK1a-24V (50 pcs.)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
Contact resistance, m
Distribution frequency
2. 1 Form A 1 Form B type, 2 Form A type
1. Maximum operating power
2. Life curve
3. Operate/Release time (at 20
C
68
F
)
Sample: DK1a1b-12V, 5 pcs.
Contact voltage, V
Contact current, A
AC resistive load
DC inductive load
(L/R = 7 ms)
DC resistive
load
AC inductive load
(cos
= 0.4)
0.1
1
5
10
10
100
1,000
0
1
2
3
4
5
6
7
8
9
10
10
100
1,000
1
Life,
10
4
Contact current, A
250 V AC resistive load
30 V DC resistive load
250 V AC inductive load (cos
= 0.4)
30 V DC inductive load (L/R = 7 ms)
80
90
10
110
120
130
140
0
1
2
3
4
5
6
7
8
9
Coil applied voltage,%V
Operate/release time, ms
Min.
Max.
x
Max.
Max.
Min.
Min.
Release time
(with diode)
Operate time
Release time
x
x
DK
242
4. Coil temperature rise
Sample: DK1a1b-12V, 5 pcs.
Ambient temperature: 20
C
68
F
5. Ambient temperature characteristics
80
90
100 110 120 130
0
10
20
30
40
50
Coil temperature rise,
C
Coil applied voltage,%V
8 A
5 A
0 A
100
20
Ambient
temperature,
C
Variation ratio, %
Pick-up
voltage
Drop-out
voltage
130
120
110
90
80
70
40
60
80
0
20
40
DIMENSIONS
1. 1 Form A type
mm
inch
Single side stable type
2 coil latching type
General tolerance:
0.3
.012
20
.787
12.5
.492
7.62
.300
10.16
.400
0.8
.031
0.4
.016
0.4
.016
3.5
.138
1.2
.047
0.8
.031
1.11
.044
9.7
.382
0.3
.012
10.16
.400
20
.787
12.5
.492
7.62
.300
7.62
.300
2.54
.100
0.8
.031
0.4
.016
0.4
.016
0.4
.016
3.5
.138
1.2
.047
0.8
.031
1.11
.044
9.7
.382
0.3
.012
10.16
.400
PC board pattern (Copper-side view)
10.16
.400
7.62
.300
2.54
.100
7.62
.300
1.1 dia.
.043 dia.
10.16
.400
7.62
.300
2.54
.100
7.62
.300
1.1 dia.
.043 dia.
The above shows 2 coil latching type.
No.5 terminal is eliminated on single side
stable type.
Tolerance:
0.1
.004
Schematic
(Bottom view)
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
1
3
4
6
-
+
1
3
4
6
5
-
+
+
Since this is a polarized relay,
the connection to the coil
should be done according to
the above schematic.
2. 1 Form A 1 Form B type, 2 Form A type
Single side stable type
2 coil latching type
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
20
.787
15
.591
7.62
.300
10.16
.400
0.8
.031
0.4
.016
0.4
.016
2.42
.095
3.5
.138
0.8
.031
1.11
.044
9.7
.382
0.3
.012
10.16
.400
15
.591
0.4
.016
2.42
.095
3.5
.138
10.16
.400
20
.787
7.62
.300
7.62
.300
2.54
.100
0.8
.031
0.4
.016
0.6
.024
0.8
.031
1.11
.044
9.7
.382
0.3
.012
PC board pattern (Copper-side view)
Tolerance:
0.1
.004
10.16
.400
10.16
.400
7.62
.300
1.1 dia.
.043 dia.
10.16
.400
7.62
.300
7.62
.300
2.54
.100
1.1 dia.
.043 dia.
Schematic (Bottom view)
<1 Form A 1 Form B type>
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
1
3
4
8
6
5
-
+
1
3
4
8
6
5
-
+
7
+
<2 Form A>
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
1
3
4
8
6
5
-
+
1
3
4
8
6
5
-
+
7
+
Since this is a polarized relay, the connection
to the coil should be done according to the
above schematic.
DK
243
DK relay socket
TYPES AND RELAY COMPATIBILITY
Socket
1 Form A
1 Form A 1 Form B, 2 Form A
Relay
Single side
stable type
2 coil
latching type
Single side
stable type
2 coil
latching type
1 Form A
Single side stable type
DK1a-PS
DK1a-PSL2
--
--
2 coil latching type
--
DK1a-PSL2
--
--
1 Form A 1 Form B
2 Form A
Single side stable type
--
--
DK2a-PS
DK2a-PSL2
2 coil latching type
--
--
--
DK2a-PSL2
SPECIFICATIONS
Remarks
*
1
Detection current: 10 mA
Breakdown voltage*
1
4,000 Vrms (Except the portion between coil terminals)
Insulation resistance
Min. 1,000 m
(at 500 V DC)
Heat resistance
150
C (for 1 hour)
Max. continuous current
10 A (DK1a-PS, DK1a-PSL2), 8 A (DK2a-PS, DK2a-PSL2)
DIMENSIONS
23
0.6
.906
.024
15
0.6
.591
.024
1 Form A type
23
0.6
.906
.024
15
0.6
.591
.024
1 Form A 1 Form B type, 2 Form A type
0.8
.031
13.7
0.6
.539
.024
6
0.3
.236
.012
3.4
0.3
.134
.012
17
0.6
.669
.024
0.25
.010
0.3
0.1
.012
.004
2.54
0.1
.100
.004
7.62
0.3
.300
.012
7.62
0.3
.300
.012
13.7
0.6
.539
.024
3.4
0.3
.134
.012
17
0.6
.669
.024
0.3
0.1
.012
.004
10.16
0.3
.400
.012
7.62
0.3
.300
.012
10.16
0.3
.400
.012
10.16
0.3
.400
.012
6
0.3
.236
.012
General tolerance:
0.3
.012
mm
inch
PC board pattern (Copper-side view)
1 Form A
1 Form A 1 Form B
The above shows 2 coil latching type. No.2 and 5
terminal are eliminated on single side stable type.
2.54
.100
2.54
.100
1.2 dia.
.047 dia.
1
2
6
5
4
3
2.54
.100
2.54
.100
1
2
6
5
8
7
4
3
1.2 dia.
.047 dia.
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 sur-
face of the relay.
3. Remove the relay, applying
force in the direction shown
below.
4. In case there is not enough
space to grasp relay with fin-
gers, use screwdrivers in the
way shown below.
GOOD
NO GOOD
NOTES
1. Phase synchronization of AC-load
switching
In case of switching the contact synchro-
nized 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.
Vin
Vin
Load
voltage
Load
voltage
Ry
Load
2. Soldering should be done under the fol-
lowing conditions:
250
C
482
F
within 10s
300
C
572
F
within 5s
350
C
662
F
within 3s
For Cautions for Use, see Relay Technical Information (Page 48 to 76).
9/1/2000
All Rights Reserved, Copyright Matsushita Electric Works, Ltd.
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