B–75
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
Tactile Switches
10 jan 18
K8
Illuminated SMT Tact Switch with Dedicated LED
Features
• Various LED options
• No light perturbation
• Sound haptic
• Various climatic classes
Mechanical
Specification
FUNCTION: momentary action
CONTACT ARRANGEMENT: 1 make control = SPST, N.O.
TERMINALS: Gullwing type for SMT, 2 terminals for LED
Tolerances on actuation force is ± 25%.
SEALING LEVEL: IP40
Typical Applications
• Automotive
• Network equipment
• Telecommunications
• Medical equipment
• Industrial controls
Packaging
In reels of 900 pieces under sealed foil.
Dimensions of reels according to EIA RS481 or
IEC 2863. External diameter 380 mm.
How To Order
Our easy build-a-switch concept allows you to mix and match options to create the switch you need. To order, select
desired option from each category and and place it in the appropriate box.
LED color
PG Pure Green
SR Super Red
OG Orange
BU Blue
WH White
Contact Material
1 Silver
Termination
G Gulf wing
K 8 4 1 G
Operating Force
4 4.0 N
LFS RoHS compliant and compatible. Silver plated.
Electrical
MAXIMUM POWER: 1.0 VA
MAXIMUM VOLTAGE: 32 VDC
MINIMUM VOLTAGE: 20 mV
MAXIMUM CURRENT: 50 mA
MINIMUM CURRENT: 1 mA
DIELECTRIC STRENGTH: (50 Hz, 1 min.) ≥ 250 Vrms
CONTACT RESISTANCE: < 100mΩ
INSULATION RESISTANCE: (100 V, inital stage) > 109Ω
BOUNCE TIME: < 10 ms
Environmental
OPERATING TEMPERATURE: -40˚C to +85˚C
STORAGE TEMPERATURE: -55˚C to +85˚C
Process
SOLDERING: Compatible with the lead free soldering profile.
No washing
MSL level: 5a
Materials
CONTACTS: Ag over Ni
TERMINALS: Ag over Ni
HOUSING: Thermoplastic UL94 V0
NOTE:
The specifications show in the datasheet are for reference only and are not valid for
design-in work. Please contact your sales representative to request drawings and
product specifications.
For systems where reliability and safety are required, please contact your sales
representative to secure product integration and function to secure usage.
Illumination Colors
White, blue, pure green, orange, super red
LED technical information available on product specification.
For any extra color, please contact your sales representative.
Type Actuation Force
(N)
Operating Life
(operations)
Travel (Total Travel)
mm (mm)
K8xx41G LFS 4.0 300,000 0.45 (0.95)
B–76
Dimensions are shown: mm
Specifications and dimensions subject to change
www.ckswitches.com
Tactile Switches
B
10 jan 18
K8
Illuminated SMT Tact Switch with Dedicated LED
1,1
1,8 1,8
1,8 1,8
0,8
6,56
8
8,4
PCB LAYOUT
TOP VIEW
ELECTRICAL GRAPH
2 1 3
5 4
1 2 3
5 4
1 2 3
5 4 pick and place area :
top of LED 2.5 max
11
10,8
1,5
11
PART NUMBER REF LED EMITTED
COLOR
LUMINOUS INTENSITY
(mcdd) If = 20 mA
CHROMATICITY
COORDINATES OR
PEAK WAVE LENGTH
(typ) If = 20 mA
FORWARD
VOLTAGE
V
If = 20 mA
min typ X Y min max
K8WH41G LFS LW T67C-S2U1-5K8L WHITE 224 560 0.33 0.33 3 4.1
K8BU41G LFS LB T67C-P2R1-35 BLUE 56 140 465 mm 3 4.1
K8PG41G LFS LP T676-L1M2-25 PURE GREEN 11.2 28 562 mm 1.8 2.4
K8SR41G LFS LP T676-Q1R2-1 SUPER RED 71 180 645 mm 1.8 2.3
K8OG41G LFS LO T676-R1S2-24 ORANGE 112 280 610 mm 1.85 2.35
42
g
nileernu fo noitcerid
Round sproket
holes 1.5 +0.1
0
380/15"
ø 13
0,1 0,05
60,15
4,85
8,3
Year
Day of year
Led Brightness Group
0,1
