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KSC Tact Switch for SMT
KSC
Miniature tact switch designed to be
surface mounted (SMT) on PCB, single
pole, normally open contact.
Available in 4 versions:
KSC1: without actuator
KSC2: with short soft actuator
KSC3: with short hard actuator
KSC4: with long soft actuator
KSC5: with rocker option
See page A-25
KSC6: with long, soft actuation
Main features
ț With or without actuator
ț Positive tactile feedback
ț Operating force from 1.1N (110 grams)
to 5.5N (550 grams)
ț Typical travel from 0.3 mm (0.118) to
0.75 mm (0.295)
ț Tin plated terminals for easy soldering
ț Gullwing or J-type terminals
ț Adapted to the main soldering
methods of surface mounted
components (SMT)
ț This product is totally washable and
sealed according to EIA – RS-448-2
test and IP 67 (dust tight, protected
against the effects of immersion in
water)
ț Compatible with the major pick-and-
place machines
ț Delivered in thermoformed tape
and reels of 2000 pieces, KSC4 of
1000 pieces, KSC5 of 1000 pieces
and KSC6 of 750 pieces
Note: Identification
ț The 4th and 5th digits of KSC code
are stamped on the metallic top plate
ț The other characteristics of the code
can actually be seen on the product.
Example
Construction
Function
Contact arrangement
Terminals
Mounting
Momentary action
1 make contact = SPST, NO
PC pins: J-type or gullwing-type
SMT (surface mount technology)
Electrical data
Switching power min./max.
Switching voltage min./max.
Switching current min./max.
Dielectric strength (50 Hz, 1 Min.)
Operating life with max. switching power
Contact resistance, initial
Insulation resistance (100 V)
Bounce-time
S = silver
1 VA
20 mV/50 V
1 mA/50 mA
м 250 V
See table next page
Ϲ 100 m
м 109
Ϲ 1 ms
G = gold
0.2 VA
20 mV/50 V
1 mA/10 mA
м 250 V
Ϲ 100 m
м 109
Ϲ 1 ms
Mechanical data
Total travel
Max. operating force
See table next page
40N (4000 grams)
DataSheet4U.com
Further data
Contact material
Silver
Gold
Insulation material
See table next page
Operating temperature
– 40°C to + 85°C
– 40°C to + 125°C
Storage temperature
– 55°C to + 85°C
– 55°C to + 125°C
Packaging:
KSC1, KSC2 and KSC3 are delivered on continuous tape in reels of 2000 pieces,
KSC4 in reels of 1000 pieces. Dimensions of reels according to EIA RS481 or IEC 2863.
External diameter 330 mm ± 2 mm.
Soldering:
Depending on the application of the KSC, this component is suited to the following methods:
Flow soldering
– The KSC terminals being SnPb plated over a Nickel barrier, the use of slightly activated flux
is suitable.
– Soldering on double wave machine. The bath temperature is generally 255°C ± 5°C
and soldering time Ͻ 5 sec.
– Cleaning according to usual washing processes.
Vapor phase reflow soldering
Temperature: 215°C;
Duration: up to 60 seconds
Infrared reflow soldering
Temperature: 200°C,
with peak of 230°C during 10 to 15 seconds
Conductive inks
Silver based inks can be used for the
connection of KSC on PC board.
Curing conditions depend on the type
of conductive ink.
DataShee
2 = 1.6N (160 grams)
and 200 k operations
1 = temperature – 40°C to + 85°C
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Ordering code: see page A-24.
A-20
Dimensions are shown in mm (inch)
Dimensions subject to change
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KSC Tact Switch for SMT
et4U.com
Selection guide
Actuator
Actuator material
Housing material
Operating force (Newton)
Travel min./max.
mm (inch)
Life expectancy
(k operations)
Total height above P.C.B
EIA 448-2
Tightness/washability
Gold: high
temperature version
Terminal plating
Terminal type:
G (gullwing), J (J type)
Soldering process
infrared/double wave/
vapor phase
max. 265°C/5 seconds
KSC1
without
thermoplastic
KSC2
short, soft
silicone
thermoplastic
KSC3
short, hard
thermoplastic
thermoplastic
KSC4
long, soft
silicone
thermoplastic
KSC6
long, soft
thermoplastic
thermoplastic
See table below.
2.5 mm (0.0984 inch) 3.5 mm (0.138 inch) 3.5 mm (0.138 inch) 5.2 mm (0.205 inch)
YES YES
YES YES
YES YES
YES YES
tin plated
G or J
tin plated
G or J
tin plated
G or J
tin plated
G or J
YES YES
YES YES
7.7 mm
YES
YES
tin plated
G or J
YES
Operating force / operating life / travel table
Type1)
KSC121
KSC141
KSC151
KSC221
KSC241
KSC321
KSC341
KSC351
KSC401 (50 shore)
KSC411
KSC421
KSC441
KSC621
KSC641
Operating force FA2)
N (grams)
Operating life
k operations
1.6 (160)
200
3.0 (300)
200
5.5 (5500
100
2.0 (200)
3.5 (350D) ataSheet4U.com
500
300
1.6 (160)
500
3.0 (300)
300
5.5 (550)
100
1.1 (110)
5000
1.4 (140)
1000
1.7 (170)
1000
3.2 (320)
300
1.6 (160)
500
3.0 (300)
300
1) Last digit: 1 = silver contacts, 3 = gold contacts
2) Tolerance of operating force FA is ± 25%
Note: Operating life is given for tested forces corresponding to the actuator force value ϫ 2.
PCB layout
Travel to make
mm (inch)
0.25
(0.00984)+–
0.4
0
0.30
(0.0118)
+
0.4
0
0.30
(0.0118)+–
0.4
0
0.35
(0.0138)
+
0.3
0.1
0.40
(0.0157)+–
0.4
0.1
0.20
(0.00787)
+
0.3
0
0.20
(0.00787)
+
0.3
0
0.25
(0.00984)+–
0.3
0
0.50
(0.0197)
+
0.25
0.25
0.35
(0.0138)
+
0.15
0.15
0.50
(0.0197)
+
0.25
0.25
0.75
(0.0295)
+
0.25
0.25
0.20
(0.00787)
+
0.35
0
0.20 (0.00787) + 0.3
Gullwing type
J type
DataShee
(0.0394)
(0.228)
(0.157)
(0.472)
(0.157)
(0.118)
(0.339)
(0.0394)
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A-21
Dimensions are shown in mm (inch)
Dimensions subject to change
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KSC Tact Switch for SMT
Dimensional Drawings
J type: internal bending
Gullwing type: external bending
(0.268)
(0.0984)
(0.00349)
(0.394)
(0.0984)
(0.00349)
et4U.com
(0.244)
(0.157)
(0.0276)
(0.118)
(0.244)
(0.244)
(0.157)
(0.118)
(0.244)
(0.0276)
(0.118)
(0.118)
(0.0984) (0.138)
(0.00349)
(0.0984) (0.138)
(0.00349)
(0.244)
(0.157)
(0.244)
(0.268)
(0.0276)
(0.244)
(0.157)
(0.244)
(0.394)
(0.0276)
(0.157)
(.0157)
(0.11)
(0.0157)
(0.11)
(0.0984) (0.138)
(.0984) (0.138)
(0.169)
(0.00349)
(0.0276)
(0.244)
(0.268)
DataSheet4U.com
(0.244)
(0.169)
(0.157)
(0.244)
(0.394)
(0.00349)
(0.0276)
(0.102)
(0.102)
(0.205)
(0.0984)
(0.00349)
(0.244)
(0.157)
(0.244)
(0.267)
(0.0276)
(0.0157)
(0.11)
(0.0984)
(0.138)
(0.0984) (0.205)
(0.00349)
(0.244)
(0.157)
(0.0276)
(0.244)
(0.394)
(0.0157)
(0.11)
(0.0984)
(0.244)
(0.169)
(0.157)
(0.00349)
(0.0276)
(0.244)
(0.268)
(0.244)
(0.169)
(0.157)
(0.00349)
(0.0276)
(0.244)
(0.394)
DataSheet4U.com
A-22
Dimensions are shown in mm (inch)
Dimensions subject to change
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KSC Tact Switch for SMT
Dimensional Drawings Actuator
Recommended
dimensions
KSC 1
max
KSC 2 - KSC 3 - KSC 4
max
A: axis of KSC
et4U.com
(R 0.00787)
Smooth surface
(0.0787)
Smooth surface
(0.118)
Dimensional Drawings Packaging
KSC4
0.4
[.0157]
12
[.472]
44
2 2 [.157] [.157]
[.0787]
[.0787]
12
[.472]
л 1.5
л [.0591]
v
5° max.
v
W
B
KSC1, KSC2, KSC3
v
D
6.75
[.266]
6.6
[.26]
л 1.5
л [.0591]
A
1.75
[.0689]
v
C
v
л 1.5
л [.0591]
A
KSC6
DataSheet4U.com
v
B
D
л 1.5
л [.0591]
v
A
C
v
[.0787] 2 2 [.0787]
4
[.157]
v
1.75
[.0689]
KSC1
KSC2
KSC3
KSC4
KSC6
W
2.9 mm (0.114 inch)
3.7 mm (0.146 inch)
3.7 mm (0.146 inch)
5.5 mm (0.217 inch)
7.7 mm (0.303 inch)
ABCD
KSC1, KSC2, KSC3 G type 16 (0.630) 10.4 (0.409) 7.5 (0.295) 8 (0.315)
J type 12 (0.472) 7.2 (0.283) 5.5 (0.217) 8 (0.315)
KSC4
G type 16 (0.630) 10.5 (0.413) 7.5 (0.295) 12 (0.472)
J type 16 (0.630) 7.3 (0.287) 7.5 (0.295) 12 (0.472)
KSC6
G &J 16 (0.630) 10.5 (0.413) 7.5 (0.295 12 (0.472)
DataShee
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A-23
Dimensions are shown in mm (inch)
Dimensions subject to change
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KSC5 Tact Switch with Rocker Option for SMT
NEW
The KSC5, normally opened miniature
Tact switch, is an extension of the broad
KSC SMT series.
The KSC5 is based on the same exter-
nal dimensions as the standard version
and can be actuated either from the top
or from the side. This eliminates the
need for a right angle mechanism or an
additional PCB.
Main Features
ț 2 actuation modes: axial and lateral
ț Tin plated terminals for an easy and
et4U.com reliable soldering
ț Gullwing or J-Type terminals
ț Totally adapted to the main soldering
methods of Surface Mounted Compo-
nents
ț This product is totally washable and
sealed according to EIA-RS-448-2
test and IP 67 (dust tight, protected
against the effects of immersion in
water)
ț Compatible with the major automatic
insertion machines
ț Delivered in thermoformed tape and
reels of 1,000 pieces
Applications
ț Applications with:
Rocking actuations
Rotating actuations
Side actuations
ț Applications where the PCB is per-
pendicular to the front panel
Construction
Function
Contact arrangement
Terminals
Mounting
Momentary
1 make contact = SPST, NO
J-type or Gullwing-type
SMT (surface mount technology)
Electrical data
Switching power min./max.
Switching voltage min./max.
Switching current min./max
Dielectric strength (50Hz, 1 Min.)
Operating life with max. switching power
Contact resistance, initial
Insulation resistance (100V)
Bounce time
Silver plating
1 VA
20 mV/50 V
1mA/50mA
> 250 V
See table below
< 100 m
> 109
< 1 ms
Gold plating
0.2 VA
20 mV/50V
1mA/10mA
> 250 V
< 100 m
> 109
< 1 ms
Mechanical data
Operating force and travel
Maximum applied force
DataSheet4U.com
Further data
Contact material
Operating temperature
Storage temperature
Solderability
See table below
40 N (axial)
10 N (lateral)
Silver plating
Gold plating
– 40°C to + 85°C
– 40°C to + 85°C
– 55°C to + 85°C
– 55°C to + 85°C
Vapor phase reflow, infrared reflow,
Double wave
Packaging
The KSC5 is delivered on continuous tape in reels of 1000 pieces, 16 mm width, 330 mm external
diameter. Other dimensions according to EIA-RS-481 Standard.
Operating force / Operating life / Travel table
Operating force
Axial FA N (grams) ± 25%
Lateral FL N (grams) ± 30%
Travel to make mm
Axial mm
Lateral mm
Life expectancy, K cycles
Axiale
Lateral
KSC521G
2.0 (200)
2.0 (200)
0.3 ± 0.15
0.5 ± 0.25
100,000
10,000
KSC541G
3.5 (300)
3.0 (300)
0.3 ± 0.15
0.5 ± 0.25
100,000
10,000
Ordering code
123456
Example: KS C 5 2 1 G
1 Designation: KS
2 Type: C
3 Actuator: 5 = actuator with rocking option
4 Operating force: 2 = 2N; 4 = 3N
5 Operating temperature: 1 = 40°C to +85°C
3 = 40°C to +125°C
6 Terminals: J = J type, G = gullwing
DataSheet4U.com
A-24
Dimensions are shown in mm (inch)
Dimensions subject to change
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DataShee