Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
DK
ASCTB177E 201202-T
ORDERING INFORMATION
1a 10A, 1a1b/2a 8A small
polarized power relays DK RELAYS
VDE
RoHS compliant
FEATURES
1. Compact with high capacity
High capacity switching in a small
package: 1 Form A, 10 A 250 V AC;
1 Form A 1 Form B and 2 Form A, 8 A
250 V AC .
2. High sensitivity: 200 mW nominal
operating power
3. High breakdown voltage
Independent coil and the contact
structure improves breakdown voltage.
Conforms with FCC Part 68
4. Latching types available
5. Sealed construction allows
automatic washing.
6. Sockets are available
7. Complies with safety standards
Complies with Japan Electrical
Appliance and Material Safety Law
requirements for operating 200 V
power supply circuits, and complies
with UL, CSA, and TÜV safety
standards.
TYPICAL APPLICATIONS
1. Switching power supply
2. Power switching for various
OA equipment
3. Control or driving relays for
industrial machines (robotics,
numerical control machines, etc.)
4. Output relays for programmable
logic controllers, temperature
controllers, timers and so on.
5. Home appliances
Between contact
and coil Between open contacts
4,000 Vrms for 1 min.
10,000 V surge
breakdown voltage
1,000 Vrms for 1 min.
1,500 V surge
breakdown voltage
Nominal coil voltage (DC)
3, 5, 6, 9, 12, 24V
DK
Operating function
Nil:
L2: Single side stable
2 coil latching
Contact arrangement
1a:
2a:
1a1b:
1 Form A
2 Form A
1 Form A 1 Form B
Notes:1. Certified by UL, CSA and TÜV
2. VDE approved type is available.
Contact material
F:
Nil: 1 Form A (AgSnO2 type)
2 Form A, 1 FormA 1 Form B (Au-flashed AgNi type)
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
DK
ASCTB177E 201202-T
TYPES
Standard packing: Carton: 50 pcs.; Case: 500 pcs.
* For sockets, see page 123.
RATING
1. Coil data
1) Single side stable
2) 2 coil latching
Contact
arrangement Nominal coil
voltage Single side stable 2 coil latching
Part No. Part No.
1 Form A
3V DC DK1a-3V-F DK1a-L2-3V-F
5V DC DK1a-5V-F DK1a-L2-5V-F
6V DC DK1a-6V-F DK1a-L2-6V-F
9V DC DK1a-9V-F DK1a-L2-9V-F
12V DC DK1a-12V-F DK1a-L2-12V-F
24V DC DK1a-24V-F DK1a-L2-24V-F
1 Form A
1 Form B
3V DC DK1a1b-3V DK1a1b-L2-3V
5V DC DK1a1b-5V DK1a1b-L2-5V
6V DC DK1a1b-6V DK1a1b-L2-6V
9V DC DK1a1b-9V DK1a1b-L2-9V
12V DC DK1a1b-12V DK1a1b-L2-12V
24V DC DK1a1b-24V DK1a1b-L2-24V
2 Form A
3V DC DK2a-3V DK2a-L2-3V
5V DC DK2a-5V DK2a-L2-5V
6V DC DK2a-6V DK2a-L2-6V
9V DC DK2a-9V DK2a-L2-9V
12V DC DK2a-12V DK2a-L2-12V
24V DC DK2a-24V DK2a-L2-24V
Nominal coil
voltage Pick-up voltage
(at 20°C 68°F)Drop-out voltage
(at 20°C 68°F)
Nominal operating
current
[±10%] (at 20°C 68°F)
Coil resistance
[±10%] (at 20°C 68°F)Nominal operating
power Max. applied voltage
(at 20°C 68°F)
3V DC
70%V or less of
nominal voltage
(Initial)
10%V or more of
nominal voltage
(Initial)
66.6mA 45Ω
200mW 130%V of
nominal voltage
5V DC 40mA 125Ω
6V DC 33.3mA 180Ω
9V DC 22.2mA 405Ω
12V DC 16.6mA 720Ω
24V DC 8.3mA 2,880Ω
Nominal coil
voltage Set voltage
(at 20°C 68°F)Reset voltage
(at 20°C 68°F)
Nominal operating
current
[±10%] (at 20°C 68°F)
Coil resistance
[±10%] (at 20°C 68°F)Nominal operating
power Max. applied voltage
(at 20°C 68°F)
Set coil Reset coil Set coil Reset coil Set coil Reset coil
3V DC
70%V or less of
nominal voltage
(Initial)
70%V or less of
nominal voltage
(Initial)
66.6mA 66.6mA 45Ω45Ω
200mW 200mW 130%V of
nominal voltage
5V DC 40mA 40mA 125Ω125Ω
6V DC 33.3mA 33.3mA 180Ω180Ω
9V DC 22.2mA 22.2mA 405Ω405Ω
12V DC 16.6mA 16.6mA 720Ω720Ω
24V DC 8.3mA 8.3mA 2,880Ω2,880Ω
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
DK
ASCTB177E 201202-T
2. Specifications
Notes: *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.
*2. Wave is standard shock voltage of ±1.2×50µs according to JEC-212-1981
*3. The upper limit of the ambient temperature is the maximum temperature that can satisfy the coil temperature rise value. Refer to Usage, transport and storage
conditions in NOTES.
REFERENCE DATA
Characteristics Item Specifications
Contact Arrangement 1 Form A 1 Form A 1 Form B 2 Form A
Contact resistance (Initial) Max. 30 mΩ (By voltage drop 6 V DC 1A)
Contact material Au-flashed AgSnO2 type Au-flashed AgNi type
Rating
Nominal switching capacity (resistive load) 10 A 250 V AC, 10 A 30 V DC 8 A 250 V AC,8 A 30 V DC 8 A 250 V AC,8 A 30 V DC
Max. switching power (resistive load) 2,500VA, 300 W 2,000 VA, 240 W 2,000 VA, 240 W
Max. switching voltage 250 V AC, 125 V DC 250 V AC, 125 V DC 250 V AC, 125 V DC
Max. switching current 10 A 8 A 8 A
Nominal operating power 200 mW
Min. switching capacity (Reference value)*110m A 5 V DC
Electrical
characteristics
Insulation resistance (Initial) Min. 1,000MΩ (at 500V DC) Measurement at same location as “Breakdo wn voltage” section.
Breakdown voltage
(Initial) Between open contacts 1,000 Vr ms for 1min. (Detection current: 10mA.)
Between contact and coil 4,000 Vr ms for 1min. (Detection current: 10mA.)
Surge breakdown
voltage*2 (Initial) between contacts and coil 10,000 V
Temperature rise (coil) (at 65°C 149°F)Max. 40°C (By resistive method, nominal voltage applied to the coil; max. switching current)
Operate time [Set time] (at 20°C 68°F)Max. 10 ms (Approx. 5 ms) [10 ms (Approx. 5 ms)]
(Nominal coil voltage applied to the coil, excluding contact bounce time.)
Release time [Reset time] (at 20°C 68°F)Max. 8 ms (Approx. 3 ms) [10 ms (Approx. 3 ms)]
(Nominal coil voltage applied to the coil, excluding contact bounce time.) (without diode)
Mechanical
characteristics
Shock resistance Functional Min. 98 m/s2 (Half-wave pulse of sine wave: 11 ms; detection time: 10µs.)
Destructive Min. 980 m/s2 (Half-wave pulse of sine wave: 6 ms.)
Vibration resistance Functional 10 to 55 Hz at double amplitude of 1.5 mm (Detection time: 10µs.)
Destructive 10 to 55 Hz at double amplitude of 3 mm
Expected life Mechanical Min. 5×107 (at 300 times/min.)
Electrical Min. 105 (resistive load, at 20 times/min., at rated capacity)
Conditions Conditions for operation, transport and storage*3Ambient temperature: –40°C to +65°C –40°F to +149°F,
Humidity: 5 to 85% R.H. (Not freezing and condensing at low temperature)
Max. operating speed (at rated load) 20 times/min.
Unit weight Approx. 5 g .18 oz Approx. 6 g .21 oz Approx. 6 g .21 oz
1-(1). Maximum operating power (1 Form A) 1-(2). Maximum operating power
(1 Form A 1 Form B, 2 Form A) 2-(1). Life curve (1 Form A)
AC resistive load
DC resistive
load
DC inductive load
(L/R = 7 ms)
AC inductive load
(cosϕ= 0.4)
Contact voltage, V
Contact current, A
10 100 1,000
0.1
1
10
100
Contact voltage, V
Contact current, A
AC resistive load
DC inductive load
(L/R = 7 ms) DC resistive
load
AC inductive load
(cosϕ= 0.4)
0.1
1
5
10
10 100 1,000 012345678910
10
100
1,000
1
Life, ×104
Contact current, A
250 V AC resistive load
30 V DC resistive load
250 V AC inductive load (cosϕ= 0.4)
30 V DC inductive load (L/R = 7 ms)
2-(2). Life curve
(1 Form A 1 Form B, 2 Form A) 3-(1). Operate/Release time (1 Form A)
Tested sample: DK1a-24V, 5 pcs. 3-(2). Operate/Release time
(1 Form A 1 Form B, 2 Form A)
Tested sample: DK1a1b-12V, 5 pcs.
012345678910
10
100
1,000
1
Life, ×104
Contact current, A
250 V AC resistive load
30 V DC resistive load
250 V AC inductive load (cosϕ= 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
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
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
DK
ASCTB177E 201202-T
DIMENSIONS (mm inch)
4-(1). Coil temperature rise (1 Form A)
Tested sample: DK1a-12V, 5 pcs.
Ambient temperature: 30°C 86°F
4-(2). Coil temperature rise
(1 Form A 1 Form B, 2 Form A)
Tested sample: DK1a1b-12V, 5 pcs.
Ambient temperature: 20°C 68°F
5-(1). Ambient temperature characteristics
(1 Form A)
Tested sample: DK1a-24V, 6 pcs
Ambient temperature: –40°C to +80°C
–40°F to +176°F
50
40
30
20
10
0
Coil temperature rise, °C
Coil applied voltage,%V
9080 100 110 120 130
10A
7A
5A
0A
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
Drop-out
voltage
-20-40 8060400 20
70
80
90
100
110
120
130
Pick-up
voltage
Ambient
temperature, °C
Variation ratio, %
5-(2). Ambient temperature characteristics
(1 Form A 1 Form B, 2 Form A)
100 20 Ambient
temperature,°C
Variation ratio, %
Pick-up
voltage
Drop-out
voltage
130
120
110
90
80
70
40 60 800–20–40
The CAD data of the products with a CAD Data mark can be downloaded from: http://industrial.panasonic.com/ac/e/
1. 1 Form A type External dimensions
Single side stable type
2 coil latching type
General tolerance: ±0.3 ±.012
20 12.5
7.6210.16
0.80.4 0.4
3.5
1.2
0.8
1.11
9.7
0.3
10.16
.787 .492
.300.400
.031.016 .016
.138
.047
.031
.044
.382
.012
.400
20 12.5
7.627.622.54
0.80.4 0.4 0.4
3.5
1.2
0.8
1.11
9.7
0.3
10.16
.787 .492
.300.300.100
.031.016 .016 .016
.138
.047
.031
.044
.382
.012
.400
PC board pattern (Bottom view)
Tolerance: ±0.1 ±.004
10.16
7.622.54 7.62 1.1 dia.
.400
.300.100 .300 .043 dia.
10.16
7.622.54 7.62 1.1 dia.
.400
.300.100 .300 .043 dia.
Schematic
(Bottom view)
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
Since this is a polarized relay,
the connection to the coil
should be done according to
the above schematic.
134
6
-
+
134
65
-
++
CAD Data
Panasonic Corporation Automation Controls Business Unit industrial.panasonic.com/ac/e/
DK
ASCTB177E 201202-T
SAFETY STANDARDS
NOTES
For Cautions for Use.
Item UL/C-UL (Recognized) CSA (Certified) VDE (Certified) TÜV (Certified)
File No. Contact rating File No. Contact rating File No. Contact rating File No. Rating
1 Form A E43028 10A 250V AC
1/3HP 125, 250V AC
10A 30V DC
LR26550
etc. 10A 250V AC
1/3HP 125, 250V AC
10A 30V DC
006099UG AC 250V 10A (cos
φ
=1.0)
AC 250V 5A (cos
φ
=0.4)
DC 30V 10A (0ms)
8705
1645 520 10A 250V AC (cos
φ
=1.0)
5A 250V AC (cos
φ
=0.4)
10A 30V DC
1 Form A
1 Form B,
2 Form A
E43028 8A 250V AC
1/4HP 125, 250V AC
8A 30V DC
LR26550
etc. 8A 250V AC
1/4HP 125, 250V AC
8A 30V DC
006099UG 1 Form A 1 Form B:
AC 250V 8A (cos
φ
=1.0)
2 Form A:
AC 250V 8A (cos
φ
=1.0)
AC 250V 4A (cos
φ
=0.4)
8705 1645
520 (1 Form A
1 Form B)
9407 13461
097 (2 Form A)
8A 250V AC (cos
φ
=1.0)
4A 250V AC (cos
φ
=0.4)
8A 30V DC
2. 1 Form A 1 Form B type, 2 Form A type
External dimensions
Single side stable type
2 coil latching type
General tolerance: ±0.3 ±.012
20 15
7.6210.16
0.8
0.4 0.4
2.42
3.5
0.8
1.11
9.7
0.3
10.16
.787 .591
.300.400
.031
.016
.138
.031
.044
.382
.012
.400 .016
.095
15
0.4
2.42
3.5
10.16
20
7.627.622.54
0.8
0.4 0.6 0.8
1.11
9.7
0.3
.016
.095
.591
.138
.400
.787
.300.300.100
.031
.016 .024 .031
.044
.382
.012
PC board pattern (Bottom view)
Tolerance: ±0.1 ±.004
10.16
10.16
7.62 1.1 dia.
.400
.400
.300 .043 dia.
10.16
7.627.622.54 1.1 dia.
.400
.300.300.100 .043 dia.
Schematic
(Bottom view)
<1 Form A 1 Form B type>
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
<2 Form A>
Single side stable
(Deenergized condition)
2 coil latching
(Reset condition)
134
865
-
+
134
865
-
+7
+
134
865
-
+
134
865
-
+7
+
Since this is a polarized relay,
the connection to the coil
should be done according to
the above schematic.
CAD Data
1. 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
Soldering depth: 2/3 terminal pitch
2. External magnetic field
Since DK relays are highly sensitive
polarized relays, their characteristics will
be aff ected by a strong e xternal magnetic
field. Avoid using the relay under that
condition.
3. When using, please be aware that
the a contact and b contact sides of 1
Form A and 1 Form B types may go on
simultaneously at operate time and
release time.
