SLIM POWER RELAY
WITH HIGH INRUSH
CURRENT CAPABILITY
TV-8 CERTIFIED
LK-T RELAYS
FEATURES
11.0
.433
24.0
.945
1. High inrush current capability
1) Operating load capability:
3. High noise immunity realized by the
card separation structure between
contact and coil
25.0
.984
inrush 118 A, steady 8 A
2) UL/C-UL TV-8 approved
4. Conforms to the various safety
standards
UL, C-UL, TÜV, and SEMKO approved
2. High insulation resistance
1) Creepage distance and clearances
between contact and coil: Min. 6 mm .236
inch (In compliance with IEC65)
2) Surge withstand voltage between
contact and coil: 10,000 V or more
SPECIFICATIONS
Contact
Characteristics
Arrangement
1 Form A
Max. operating speed
20 cpm (at rated load)
Initial contact resistance
(By voltage drop 6 V DC 1 A)
Initial insulation resistance*1
Min. 1,000 MΩ (at 500 V DC)
Max. 100 mΩ
AgSnO2 type
5 A 277 V AC
Between open
contacts
Initial *2
breakdown
1,000 Vrms for 1 min.
Contact material
Nominal switching
capacity
Between contact
voltage
4,000 Vrms for 1 min.
10,000 V
and coil
Max. switching power
Max. switching voltage
Max. switching current
1,385 V A
277 V AC
Initial surge voltage between contact
and coil*3
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Rating
(resistive load)
8 A (120V AC)
Max. 15ms (at 20°C 68°F)
Max. 5ms (at 20°C 68°F)
Min. switching capacity#1
(Reference value)
100 mA, 5 V DC
Mechanical (at 180 cpm)
106
105
Expected life
(min. operations)
Max. 35°C with nominal coil
voltage and at 5 A contact
carrying current
Electrical (at 20 cpm)
(at rated load)
Temperature rise (at 70°C)
(resistance method)
200 m/s2{approx. 20 G}
1,000 m/s2{approx. 100 G}
Coil
Functional*5
Shock
Nominal operating power
250 mW
Destructive*6
resistance
#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.
10 to 55Hz
at double amplitude of 1.5mm
Functional*7
Vibration
Remarks
resistance
10 to 55Hz
at double amplitude of 1.5mm
Destructive
*1 Measurement at same location as “Initial breakdown voltage” section.
*2 Detection current: 10mA
Ambient
temp.
–40°C to +70°C
–40°F to +158°F
*3 Wave is standard shock voltage of ±1.2 × 50μs according to JEC-212-1981
*4 Excluding contact bounce time.
Conditions for operation,
transport and storage*8
(Not freezing and
condensing at low
temperature)
*5 Half-wave pulse of sine wave: 11 ms; detection time: 10 μs
*6 Half-wave pulse of sine wave: 6 ms
Humidity
5 to 85% R.H.
*7 Detection time: 10 μs
Air
pressure
86 to 106 kPa
*8 The upper operation ambient temperature limit is the maximum temperature that
can satisfy the coil temperature rise value. Refer to 1. Usage, transport and
storage conditions in NOTES on page 3.
Unit weight
Approx. 12 g .42 oz
TYPICAL
ORDERING INFORMATION
APPLICATIONS
Ex. LKT 1a
F
12V
• Audio visual equipment
• Flat TVs and audio equipment, etc.
• Office equipment
Contact arrangement
1a: 1 Form A
Protective construction
F: Flux-resistant type
Coil voltage(DC)
5, 9, 12, 24V
• Home appliances
UL/C-UL, TÜV, SEMKO, TV-8 approved type is standard.
Notes: 1. Standard packing Carton: 100 pcs. Case: 500 pcs.
2. 3 V, 6 V, and 18 V DC types are also available. Please consult us for details.
ds_61113_0004_en_lkt: 091008J
1
Download from Www.Somanuals.com. All Manuals Search And Download.
LK-T
4-(2). Electrical life test
(UL508 TV-8 rating test)
Change of pick-up and drop-out voltage
Change of contact resistance
Sample: LKT1aF-12V, 6 pcs.
• Overload test
Load: 12 A 120 V AC (60 Hz),
Inductive load (cosφ = 0.75)
Operation frequency: 6 times/min
(ON : OFF = 1 s : 9 s)
No. of operations: 50 ope.
• Endurance test
Load: 8A 120 V AC (960 W lamp load),
(Inrush: 118 A)
12
50
45
40
35
30
25
20
15
10
5
10
Pick-up voltage
8
Max.
x
Min.
6
4
Operation frequency: 1 times/min
(ON: OFF = 1 s: 59 s)
No. of operations: 25,000 ope.
Max.
x
Min.
Drop-out voltage
2
Max.
x
Min.
0
0
0
25
0
25
No. of operations, ×103
No. of operations, ×103
NOTES
1. Usage, transport and storage
conditions
2. Solder and cleaning conditions
4) The cycle lifetime is defined under the
standard test condition specified in the
JIS* C 5442 standard (temperature 15 to
35°C 59 to 95°F, humidity 25 to 75%).
Check this with the real device as it is
affected by coil driving circuit, load type,
activation frequency, activation
phase,ambient conditions and other
factors.
Also, be especially careful of loads such
as those listed below.
(1) When used for AC load-operating and
the operating phase is synchronous.
Rocking and fusing can easily occur due
to contact shifting.
(2) High-frequency load-operating
When high-frequency opening and
closing of the relay is performed with a
load that causes arcs at the contacts,
nitrogen and oxygen in the air is fused by
the arc energy and HNO3 is formed. This
can corrode metal materials.
Three countermeasures for these are
listed here.
• Incorporate an arc-extinguishing circuit.
• Lower the operating frequency
• Lower the ambient humidity
5) Heat, smoke, and even a fire may
occur if the relay is used in conditions
outside of the allowable ranges for the
coil ratings, contact ratings, operating
cycle lifetime, and other specifications.
Therefore, do not use the relay if these
ratings are exceeded.
6) If the relay has been dropped, the
appearance and characteristics should
always be checked before use.
7) Incorrect wiring may cause
1) Please obey the following conditions
when soldering automatically.
(1) Preheating: Within 120°C 248°F
(solder surface terminal portion) and
within 120 seconds
(2) Soldering iron: 260°C±5°C
500°F±41°F (solder temperature) and
within 6 seconds (soldering time)
2) Since this is not a sealed type relay, do
not clean it as is. Also, be careful not to
allow flux to overflow above the PC board
or enter the inside of the relay.
3. Certification
1) This relay is UL and C-UL certified
(File No. E43149).
UL, C-UL rating: TV-8
2) This relay is certified by TUV as an
electromagnetic relay that complies with
VDE0435 (File No. B040413461035).
(1) TUV rating: 8A, 250 V to COSφ = 1.0
(2) The terminals of this relay can only be
connected with solder.
1) Temperature:
–40 to +70°C –40 to +158°F
2) Humidity: 5 to 85% RH
(Avoid freezing and condensation.)
The humidity range varies with the
temperature. Use within the range
indicated in the graph below.
3) Atmospheric pressure: 86 to 106 kPa
Temperature and humidity range for
usage, transport, and storage
Humidity, %RH
85
Tolerance range
(Avoid freezing
when used at
(Avoid
condensation
temperatures lower when used at
than 0°C 32°F)
temperatures higher
than 0°C 32°F)
5
-40
-40
0
+32
70
+158
Temperature, °C °F
(3) This relay is certified by SEMKO (File
No. 400968).
SEMKO rating: 3/100A 250 V AC, 5/40A
250 V AC
4) Condensation
Condensation forms when there is a
sudden change in temperature under
high temperature and high humidity
conditions. Condensation will cause
deterioration of the relay insulation.
5) Freezing
4. Others
1) For precautions regarding use and
explanations of technical terminology,
please refer to “Relay Technical
Information”.
2) To ensure good operation, please keep
the voltage on the coil ends to ±5% (at
20°C 68°F) of the rated coil operation
voltage. Also, please be aware that the
pick-up voltage and drop-out voltage may
change depending on the temperature
and conditions of use.
Condensation or other moisture may
freeze on the relay when the
temperatures is lower than 0°C 32°F.
This causes problems such as sticking of
movable parts or operational time lags.
6) Low temperature, low humidity
environments
The plastic becomes brittle if the relay is
exposed to a low temperature, low
humidity environment for long periods of
time.
unexpected events or the generation of
heat or flames.
3) Keep the ripple rate of the nominal coil
voltage below 5%.
ds_61113_0004_en_lkt: 091008J
3
Download from Www.Somanuals.com. All Manuals Search And Download.
|