C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
Description
The MDS series mini size snap-acting switches are designed with
a snap-acting tactile feel, feature a mini package size and come in
either a vertical or right-angle PCB mount variety. MDS switches
are perfect for medical devices, consumer electronic devices and
other applications where you need to be able to detect the
presence of a mechanical device.
Features & Benefits
■ Snap-acting tactile feel
■ Available in vertical or
right angle PCB mount
Mechanical & Electrical Life
Contact Resistance
Operating Temperature
■ Detect the presence of
a mechanical device
■ Medical devices
300mA @ 30 VDC
30,000 operations
100 m Ω max. initial
–25ºC to 70ºC
Base
Cover
Available in bulk or tape and reel.
Packaging
Operating Force
PA9T
Actuator
50g Max.
Movable Contact
3g Min.
Release Force
■ Consumer electronic
devices
■ ATCA applications
Materials
According to lead free
solder profiles
Solderability
■ Mini package size
Applications
Specifications
Contact Rating
■ RoHS compliant and
compatible
Stationary Contacts
Copper alloy, Silver plated
Terminals
Notes:
MDS series is RoHS compliant, and compatible. See technical data section of this catalog for RoHS compliant
and compatible definitions and specifications. Specifications and materials listed above are for switches with
standard options. For information on specific and custom switches, consult Customer Service Center.
Ordering Number
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 place it in the appropriate box.
MDS - xx - xxx - xxx - xx
Series
MDS: SPDT
Operating Force
65: 50 grams
Electrical Rating
00A: 300mA @ 30 VDC
Actuator
L02: Standard lever
L03: Higher OP lever
1
Termination Style
PS: PC Thru-hole, Short
PL: PC Thru-hole, Long
RS: PC Thru-hole, Short, Right bend
RL: PC Thru-hole, Long, Right bend
LS: PC Thru-hole, Short, Left bend
LL: PC Thru-hole, Short, Left bend
SL: SMT, Left
SR: SMT, Right
SV: SMT, Vertical
CL: SMT, Left bracket with pins
CR: SMT, Right bracket with pins
BL: SMT, Left bracket no pins
BR: SMT, Right bracket no pins
WC: Wire lead, 6 inches
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
Operating Characteristics
Series Dimensions - inches (mm)
40°
Lever L02
Lever L03
Operating Position
DIM ‘A’
6.7±0.5
7.0+/-0.5
Free Position
DIM ‘B’
8 max.
Pre-Travel
DIM ‘C’
7
2.4
1.3
Over Travel
R0.6
7
1.6
Recommended
Direction of
Cam Engagement
2X Ø 1.6
8.2
Operating Force
Electrical Rating
Option Code
Electrical Rating
00A
300mA @ 30 V DC
2.7
Operating Force
Option Code
Operating Force
65
50 grams max.
7
1.3
0.3 min.
2 NC
1
0.3A @ 30 VDC 3 NO
(Common)
50 grams
F. max.SPDT
Schematic
Contact Rating
1.6
4
7 DIM ‘D’
"A" "B"
8.5 max.
1.8 max.
L03 Lever
"C"
"D"
L02 Lever
L02 Lever
7
2 NC
1
3 NO
(Common)
Schematic SPDT
1.6
L03 Lever
Actuator
L02 Standard Lever
2.7
L03 Higher OP Lever
2.4
7
7
2.4
1.3
1.6
L02 Lever
L03 Lever
Terminations
PCB Mounting Pattern
PS PC Thru-hole, Short Straight
Ø 1.5 ± 0.08
TYP
3X 1.5
2.5±0.08
2.5±0.08
3X 3.1
PCB Mounting
COM NO NC
3X 2.86
1.3 ± 0.15 TYP
2X 2.5 TYP
2
3X 0.5
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
PL PC Thru-hole, Long Straight
RS PC Thru-hole, Short Right Bend
3X 1.25
3X 1.5
2.86
COM NO NC
3X 5.3
1.3±0.15 TYP
0.8 TYP
2.5 TYP
3X 0.5
3X 0.5
COM NO NC
1.3 TYP
0.8 TYP 3X 1.5 ± 0.38
2.5 TYP
3X 1.5
RL PC Thru-hole, Long Right Bend
3X 1.5
LS PC Thru-hole, Short Left Bend
3X 1.25
3X 0.5
COM NO NC
2.5 TYP
3X 3.1 ± 0.38
3X 1.5 ± 0.2
NC
1.25
1.3 TYP
0.8 TYP
2.5 TYP
1.36
1.3 TYP
0.8 TYP
3
NO
3X 0.5
COM
3X 1 ± 0.38
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
LL PC Thru-hole, Long Left Bend
3X 0.5 ± 0.2
3X 1.5 ± 0.2
NC
NO
1.3 TYP
0.8 TYP
2.5 TYP
1.36
SL SMT, Left Mount
3X 2.7
3X 1.5
3X 0.4
COM
3X
3.1 ± 0.38
1.3 TYP
3X 0.8
2.5
1.25
3X 0.5
3X 2.7
SMT Mounting Pattern
0.070
(1.8)
TYP
0.060
(1.5)
TYP
0.098
(2.5)
3X 1.5
1.3 TYP
3X 0.8
2.5 TYP
2.5
TYP
3.1 ± 0.38
3X
3X 1.36
3X 1.3
3X 0.8
0.060
(1.5)
TYP
0.098
(2.5)
Coplanar
to 0.1mm
3X 1.25
3X 0.5
3X 2.7
SMT Mounting Pattern
0.070
(1.8)
TYP
90º ± 5º
3X 0.5
3X 0.4
3X 1.5
3X 2.7
SV SMT, Vertical
1.6 REF
SR SMT, Right Mount
TYP
SMT Mounting Pattern
TYP
0.070
(1.8)
TYP
0.060
(1.5)
TYP
0.098
(2.5)
4
TYP
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
CL SMT, Left Bracket With Pins
10°
11.63
8.7
to Center
of Posts
0.25
9.2
2X 1.78 TYP
8.22
3.08
Operating POS. from
Center of Post
5.7 ± 0.6 L02 Lever
6.0 ± 0.6 L03 Lever
3.3
2X 2.05
3X 1.3
3X 0.8 TYP
2.5 TYP
5
2X 1.66
2
2X Ø 0.9 ± 0.05
Hole 2X 1.8
2X 0.76 ± 0.05
3X 0.5
2.5
3X 2.7
8.2
3X 2.7
Ø12
2X 0.85 ± 0.25
8.7
3X 1.5 4.6
2.5
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
CR SMT, Right Bracket With Pins
10°
11.63
8.7
to Center
of Posts
0.25
9.2
3.08
2X1.78 TYP
2X 0.85 ± 0.25
2X 1.66
Operating POS.
from Center of Post
5.7 ± 0.6 L02 Lever
6.0 ± 0.6 L03 Lever
3.3
8.22
2.7
Ø 12
2X 2.05
2
8.7
2X Ø 0.9 ± 0.05
2X
HOLE
0.76 ± 0.05
2X 1.8
8.2
3X 1.3
3X 0.8
2.5 TYP
3X 0.5
3X 1.5 4.6
2.5
2.5
3X 2.7
BL SMT, Left Bracket No Pins
2X 10°
11.65
0.25
9.2
3.08
Operating POS.
to Center of SMT Pad
3.45 ± 0.6 L02 Lever
3.75 ± 0.6 L03 Lever
C OF PADS
2X 1.33
2X 1.66
3X 1.8
8.22
8.2
12
2X 2.05
6.6
3X 2.7
3X 0.5 TYP
3X 2.7 TYP
1.3 TYP
0.8 TYP
2.5 TYP
6
2.5
2.5
3X 1.5
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
BR SMT, Right Bracket No Pins
11.65
10°
0.25
9.2
3.08
2X 1.33
2X 2.05
Operating POS.
to Center of SMT Pad
3.45 ± 0.6 L02 Lever
3.75 ± 0.6 L03 Lever
2X 1.66
3X 1.8
C of Pads
8.22
12
6.6
8.2
1.3 TYP
0.8 TYP
2.5 TYP
3X 2.7
3X 0.5
3X 2.7
2.5
2.5
3X 1.5
WC Wire Lead, 6 inches
152.4
2.7
9.53
Shrink Tubing
NC
NO
COM
26 AWG
UL 1007 WIRE
12.7
Tape and Reel
SL SMT, Left Mount
1.75
11.5
24
A
SR SMT, Right Mount
2 ± 0.1 TYP
4 ± 0.1 TYP
Ø 1.5 TYP
3
B
B
A
8.6
6.7
12 ± 0.1
TYP
0.35
9.8
13.1
Section A-A
5°
Pulling-Out Direction of the Tape
Section B-B
7
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24
C&K® Switch Datasheet
MDS Series
Mini Size Snap-acting Switches
Switches
CL SMT, Left Mount
BL SMT, Left Mount
1.75
CR SMT, Right Mount
BR SMT, Right Mount
2 ± 0.1 TYP
4 ± 0.1 TYP
A
Ø1.5 TYP
0.35
4.25
11.5
1.5
24
13
5.25
1
Section A-A
16 ± 0.1 TYP
A 12
8.6
6.7
MDS6500AL02CL Shown
5°
Section B-B
Pulling-Out Direction of the Tape
SV SMT, Vertical Mount
Ø 1.5 TYP
2 TYP
4 TYP
8 .5
T YP
12
TYP
6
TYP
Pulling-Out Direction of the Tape
50
3.5
TYP
10.1
TYP
Notes: Supplied in carrier tape meeting the EIA-481-2 standard for 24mm tape. Packaging quantity: SL and SR: 1,600 pieces per reel. CL, CR, BL and BR: 1,000 pieces per reel. SV: 400 pieces per reel. WC: consult factory
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
8
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.03/22/24