VDE
DK-RELAYS
MINIATURE POWER RELAY
20
.787
12.5
.492
20
.787
15
.591
10
.394
10
.394
1a
1a1b
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
mm inch
SPECIFICATIONS
Contact
Characteristics
Arrangement
1 Form A
Initial contact resistance, max.
(By voltage drop 6 V DC 1A)
Contact material
Nominal
switching capacity
Max. switching
power
Rating
(resistive)
Max. switching
voltage
Max. switching
current
Expected
life (min.
operations)
2 Form A,
1 Form A
1 Form B
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
5×107
Mechanical
Electrical
(resistive)
10
(10 A 250 V AC,
10 A 30 V DC)
5
105
(8 A 250 V AC,
8 A 30 V DC)
Remarks
• 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
Functional*7
Destructive
200 mW
* 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 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61).
TYPICAL
APPLICATIONS
Between open
contacts
Between contacts
and coil
Surge voltage between coil and
contact*3
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Temperature rise
(at nominal voltage)
Functional*5
Shock
resistance Destructive*6
20 cpm (at rated load)
Min. 1,000 mΩ (at 500 V DC)
1,000 Vrms
Initial
breakdown
voltage*2
Vibration
resistance
Coil
Nominal operating power
Max. operating speed
Initial insulation resistance*1
4,000 Vrms
Min. 10,000 V
Max. 10 ms (Approx. 5 ms)
Max. 8 ms (Approx. 3 ms)
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
Conditions for oper- Ambient
ation, transport and temp.
storange*8
(Not freezing and
Humidity
condensing at low
temperature)
1 Form A
Unit
1 Form A 1 Form B,
weight
2 Form A
–40°C to +65°C
–40°F to +149°F
5 to 85% R.H.
Approx. 5.6 g .20 oz
Approx. 6 g .21 oz
ORDERING INFORMATION
Ex. DK
1a
L2
12V
Contact arrangement
Operating function
Coil voltage
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
Note: Standard packing Carton: 50 pcs.; Case: 500 pcs.
UL/CSA, TÜV approved type is standard.
239
DK
TYPES AND COIL DATA (at 20°C 68°F)
Single side stable
Part No.
1 Form A
1 Form A
1 Form B
2 Form A
DK1a-3V
DK1a-5V
DK1a-6V
DK1a-9V
DK1a-12V
DK1a-24V
DK1a1b-3V
DK1a1b-5V
DK1a1b-6V
DK1a1b-9V
DK1a1b-12V
DK1a1b-24V
DK2a-3V
DK2a-5V
DK2a-6V
DK2a-9V
DK2a-12V
DK2a-24V
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
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
2.1
3.5
4.2
6.3
8.4
16.8
Nominal
operating
current,
mA (±10%)
Set
Reset
66.6
66.6
40
40
33.3
33.3
22.2
22.2
16.6
16.6
8.3
8.3
Set
45
125
180
405
720
2,880
Reset
45
125
180
405
720
2,880
Nominal
operating
power,
mW
Set
Reset
200
200
200
200
200
200
200
200
200
200
200
200
2.1
3.5
4.2
6.3
8.4
16.8
2.1
3.5
4.2
6.3
8.4
16.8
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
45
125
180
405
720
2,880
200
200
200
200
200
200
200
200
200
200
200
200
Nominal
voltage,
V DC
Set voltage,
V DC (max.)
Reset voltage,
V DC (max.)
DK1a-L2-3V
DK1a-L2-5V
DK1a-L2-6V
1 Form A
DK1a-L2-9V
DK1a-L2-12V
DK1a-L2-24V
3
5
6
9
12
24
2.1
3.5
4.2
6.3
8.4
16.8
DK1a1b-L2-3V
DK1a1b-L2-5V
1 Form A DK1a1b-L2-6V
1 Form B DK1a1b-L2-9V
DK1a1b-L2-12V
DK1a1b-L2-24V
DK2a-L2-3V
DK2a-L2-5V
DK2a-L2-6V
2 Form A
DK2a-L2-9V
DK2a-L2-12V
DK2a-L2-24V
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
Part No.
240
66.6
40
33.3
22.2
16.6
8.3
66.6
40
33.3
22.2
16.6
8.3
Coil
resistance,
Ω (±10%)
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
AC resistive load
DC inductive load
(L/R = 7 ms)
DC resistive
load
Operate/release time, ms
10
AC inductive load
(cosϕ = 0.4)
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)
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
Contact voltage, V
10
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
120
110
Pick-up
voltage
100
0
20 40 60 80
Ambient
90
temperature,°C
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
Operate time
20
10
80
10
70
0
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 type
1. Maximum operating power
3. Operate/Release time (at 20°C 68°F)
2. Life curve
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
Contact current, A
9
10
0
80
90
10
110
120
130
140
Coil applied voltage,%V
241
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
Pick-up
voltage
130
120
110
0 100
–40 –20
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
4
+
6
1.2
.047
1.11
.044
7.62
.300
10.16
.400
3
10.16
.400
2 coil latching type
20
.787
12.5
.492
2.54
.100
7.62
.300
1.1 dia.
.043 dia.
7.62
.300
2 coil latching
(Reset condition)
9.7
.382
0.3
.012
1
3.5
.138
0.4
.016
0.4
.016
2.54
.100
0.8
.031
7.62
.300
0.4
.016
0.8
.031
7.62
.300
1.2
.047
1.11
.044
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
Schematic (Bottom view)
<1 Form A 1 Form B type>
Single side stable
(Deenergized condition)
1
-
0.8
.031
10.16
.400
7.62
.300
3.5
.138
0.8
.031
2.42
1.11
.044
.095
10.16
.400
0.4
.016
10.16
.400
3
4
6
5
+
8
2 coil latching
(Reset condition)
1
+
+
8
7
3
4
6
5
2 coil latching type
20
.787
15
.591
2.54
.100
7.62
.300
7.62
.300
1.1 dia.
.043 dia.
9.7
.382
0.3
.012
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
-
10.16
.400
0.4
.016
10.16
.400
8
4
6
5
2 coil latching
(Reset condition)
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.
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
3
+
Note:
242
<2 Form A>
Single side stable
(Deenergized condition)
Tolerance: ±0.1 ±.004
DK
DK relay socket
TYPES AND RELAY COMPATIBILITY
Socket
Relay
Single side stable type
2 coil latching type
1 Form A 1 Form B Single side stable type
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
1 Form A 1 Form B type, 2 Form A type
15±0.6
.591±.024
PC board pattern (Copper-side view)
1 Form A
15±0.6
.591±.024
23±0.6
.906±.024
1
2
6
5
3
4
1.2 dia.
.047 dia.
2.54
.100
23±0.6
.906±.024
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
1
2
3
4
8
7
6
5
1.2 dia.
.047 dia.
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
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 (Page 48 to 76).
9/1/2000
All Rights Reserved, © Copyright Matsushita Electric Works, 243
Ltd.
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