C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Description
TP series of tiny pushbutton switches are used most often in
telecommunications, networking and instrumentation applications.
The TP switches are well-known for their subminiature size and
ability to switch at 1 AMP. Snap-in front panel mounting is
available, as are vertical and right angle terminations – and their
epoxy terminal seal is compatible with bottom wash cleaning.
TP12SH9AVBE SPDT
Features & Benefits
TP12SH9V3BE SPDT
TP21SH9AVBE DPST
■ Telecommunications and
networking equipment
B contact material: 0.4 VA max. @ 20 V
AC or DC max. Q contact material: 1 amp
@ 120 V AC or 28 V DC. See page 8 for
additional ratings.
Insulation Resistance
Dielectric Strength
1000 Vrms min. @ sea level.
Operating Temperature
–30ºC to 85ºC
Solderability
Per MIL-STD-202F method 208D, or EIA
RS-186E method 9 (1 hour steam aging).
■ Computers and peripherals
■ Instrumentation and controls
Materials
TP11, TP21 models: 60,000 make-andbreak cycles at full load. TP12 models:
30,000 cycles.
Below 20 mΩ15 typ. initial @ 2-4 V DC,
100 mA, for both silver and gold
plated contacts.
109 Ω 15 min.
Contact Resistance
■ RoHS compliant models
available
Applications
Specifications
Electrical Life
■ Through-hole and surface
mount models
Agency File Number
E42363
Contact Rating
■ Tape & reel packaging
available
■ Snap-fitting actuator accepts
standard caps
Agency Approvals
Agency
■ Sealed against solder &
cleaning processes
Case
Glass filled nylon 4/6 or 6/6, flame
retardant, heat stabilized or diallyl
phthalate (DAP), (UL 94V-0).
Plunger
Thermoplastic polyester (UL 94V-0).
Cap & Frame
Nylon, black standard
Bushing
Brass, nickel plated.
Housing
Stainless steel
Switch Support
Brass, matte-tin plated.
End Contacts
Notes:
Any models supplied with Q, B, P, S, R or G contact material are RoHS compliant. Specifications and materials
listed above are for switches with standard options. For information on specific and custom switches, consult
Customer Service Center.
Center Contacts &
All Terminals
1
B contact material: Copper alloy, with
gold plate over nickel plate. Q contact
material: Coin silver, silver plated. See
page 8 for additional contact materials.
B contact material: Copper alloy, with
gold plate over nickel plate. Q contact
material: Copper alloy, silver plated. See
page 8 for additional contact materials.
Terminal Seal
Epoxy. Refer to soldering and cleaning in
Technical Data Chapter
Hardware
Nut & Locking Ring: Brass nickel plated.
Lockwasher: Steel, nickel plated.
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Ordering Number
To order, simply select desired option from each category and place in the appropriate box. Available options are shown and described on
pages 2-10. For additional options not shown in catalog, consult Customer Service Center. All models have epoxy terminal seal and are
compatible with all “bottom-wash” PCB cleaning methods.
x-x-x-x-x-x-x
Switch Function
TP11: SPST Off-Mom.
TP12: SPDT On-Mom.
TP21: DPST Off-Mom.
Actuator or Bushing
Terminations
SH: .155” high plunger, threaded,
A: Right sngle, PC Thru-hole
.220” high bushing, flat
SH8: .155” high plunger, unthreaded, C: PC Thru-hole
Z: Solder lug
.220” high bushing, round
SH9: .155” high plunger, unthreaded, AV: Vertical right angle,
PC Thru-hole
.220” high bushing, flat
V3: Vertical mount, v-bracket
J81: Snap-in with frame
W: Wire wrap
LT: .215” high plunger, threaded,
.310” high bushing, flat
LT9: .215” high plunger, unthreaded,
.310” high bushing, flat
MS9: .130” high plunger,
.020” high bushing, round
Frame Color
2: Black
None: Models with no frame
Cap Color
2: Black
None: Models with no cap
1: White
Seal
E: Epoxy
Contact Material
B: Gold
P: Gold, matte-tin
Q: Silver
G: Gold over silver
R: Gold over silver, matte tin
Switch Function
SPDT
Switch Function
No. Poles
POS. 1
Model Number
POS. 2
Connected Terminals
POS. 1
POS. 2
Schematic
C&K marking on opposite side
SP
TP11
OFF
MOM.
OPEN
1-3
SP
TP12
ON
MOM.
2-1
2-3
SPST
SPDT
Dimensions inches (mm)
C&K Marking on
Opposite Side
SPST
.200
Epoxy Seal
(5.08)
.020 TYP.
(0.51)
Omit terminal 2 for
3
EP11 models.
.320
.100 TYP. (8.13)
2
(2.54)
1
.110
.060 TYP.
(2.79)
(1.52)
.160
TERM. Width
(4.06)
10-48UNS
.100 DIA.
(2.54Ø)
.155
(3.94)
.220 .340
(5.59) (8.64)
Terminal Nos. For
Reference Only
Part Number Shown: TP12SHZQE
C&K Marking on
Opposite Side
DPDT
10-48UNS
.100 DIA.
(2.54Ø)
.155
(3.94)
3
2
1
.220 .340
(5.59) (8.64)
Epoxy Seal .160
.020 TYP. (4.06)
(0.51)
6
.320
.200 (5.08) (8.13)
4
.110
(2.79)
.360
(9.14)
2
3
1
.060 TYP.
(1.52)
TERM. Width
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
DPST
Switch Function
Connected Terminals
C&K Marking
on
.200
Opposite Side
POS. 1
POS.
Epoxy
(5.08)1
POS. 2Seal
POS. 2
Mo. Poles
.020 TYP.
10-48UNS
(0.51)
.100 DIA.
3
C&K marking on.320
opposite side
(2.54Ø)
.100 TYP. (8.13)
2
(2.54)
1
.110
.060
TYP. 1-3, 4-6
.155
TP21
OFF
MOM.
OPEN
(2.79)
(1.52)
(3.94)
.220 .340
.160
TERM. Width
(5.59) (8.64)
(4.06)
No. Poles
SPST
DP
Schematic
DPST
Dimensions inches (mm)
C&K Marking on
Opposite Side
10-48UNS
.100 DIA.
(2.54Ø)
DPDT
.155
(3.94)
3
2
1
.220 .340
(5.59) (8.64)
Epoxy Seal .160
.020 TYP. (4.06)
(0.51)
6
.320
.200 (5.08) (8.13)
4
.110
(2.79)
.360
(9.14)
1
.060 TYP.
(1.52)
TERM. Width
Terminal Nos. For
Reference Only
Note: Part Number Shown: TP21SHZQE
MOM. = Momentary All models
3
with all options when ordered with G, Q or R contact material.
Actuator Snap-in Front Mount
J81 Snap-in with Frame
Dimensions inches (mm)
.090
(2.29)
.615
(15.62)
.765
(19.43)
.150
(3.81)
Option Code
.370
(9.40)
.320
(8.13)
.450 SQ.
(11.43)
Panel Thickness
.047 to .125
(1.19) (3.18)
Cap Color
2
Black
1
White
Option Code
Frame Color
2
Black
None
No Frame Color (J80 option)
Panel Mounting
.005 R. Max.
(0.13) TYP.
.600
(15.24)
.500
(12.70
Notes:
Caps & Frames available separately, see page 8. Cap and Frame Finish: matte. Other colors available, consult Customer Service Center. Available with Z, C, or W terminations.
3
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Bushing
SH 0.155” High Plunger
0.220” High Bushing,
Threaded, Flat
SH8 0.155” High Plunger
0.220” High Bushing,
Unthreaded
SH9 0.155” High Plunger
0.220” High Bushing,
Unthreaded, Flat
Dimensions inches (mm)
Dimensions inches (mm)
Dimensions inches (mm)
.240 DIA.
(6.10Ø)
.240 DIA.
(6.10Ø)
.240 DIA.
(6.10Ø)
.187 DIA. (4.75Ø)
.173
(4.39)
.173
(4.39)
.155 †
(3.94)
.100 DIA.
(2.54Ø)
.100 DIA.
(2.54Ø)
.220
(5.59)
1/4-40UNS-2A
.155 †
(3.94)
.155 †
(3.94)
.100 DIA.
(2.54Ø)
.220
(5.59)
.220
(5.59)
.020
(0.51)
.020
(0.51)
.020
(0.51)
Notes:
Standard with A, AV, V3 terminations.
† Subtract .016 (0.41) for models with A, AV or V3 terminations.
Caps available for plunger options, see page 8.
Notes:
Standard with Z, C, W terminations.
LT 0.21517” High Plunger, 0.310” High Bushing, Threaded
LT9 0.21517” High Plunger, 0.310” High Bushing, Unthreaded
MS9 0.130” High Plunger
Dimensions inches (mm)
Dimensions inches (mm)
.280 DIA.
(7.11Ø)
.200 DIA.
(5.08Ø)
.245
(6.22)
.225
(5.72)
.120 DIA.
(3.05Ø)
1/4-40UNS-2A
.100 DIA.
(2.54Ø)
.215 †
(5.46)
.130
(3.30)
.020
(0.51)
.310
(7.87)
Note: Not available with Z terminations.
.020
(0.51)
Panel Mounting
10-48 Bushing
Dimensions inches (mm)
.179
(4.55)
.195 DIA.
(4.95Ø)
Without locking ring
.094 DIA.
(2.39Ø)
.240
(6.10)
1/4 In. Bushing
Dimensions inches (mm)
.234
(5.94)
.195 DIA.
(4.95Ø)
.250 DIA.
(6.35Ø)
With standard locking ring
Without locking ring
.094 DIA.
(2.39Ø)
.240
(6.10)
.250 DIA.
(6.35Ø)
With standard locking ring
Notes:
One mounting nut, locking ring and lockwasher supplied standard with 10-48 threaded bushings (two nuts with 1/4-40 bushings). Optional mounting nut and locking ring styles and finishes available separately, see section “Technical
Data and Additional Hardware”.
4
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Terminations
C PC Thru-hole
Dimensions inches (mm)
SP
Epoxy
Seal
.030
(0.76)
Z Solder Lug
Dimensions inches (mm)
DP
SP
.060
(1.52)
.130
(3.30)
.130 (3.30) Epoxy
Seal
.200
(5.08)
.020 THK.
(0.51)
DP
.160 (4.06)
.110
(2.79)
.030
(0.76)
.060
(1.52)
.110
(2.79)
Epoxy
Seal
.060
(1.52)
.030
(0.76)
Epoxy
Seal
.030
(0.76)
.160
(4.06)
.060
(1.52)
.020 THK.
(0.51)
PC Mounting
Note: Not available with MS9 bushing or P or R contact material.
.100 TYP.
(2.54)
.100 TYP.
(2.54)
.200
(5.08)
.043 DIA.
(1.09Ø) TYP.
W Wire Wrap
Dimensions inches (mm)
.043 DIA.
(1.09Ø) TYP.
SP
Omit center holes
for TP11 models
.070
(1.78)
DP
.600
(15.24)
Epoxy Seal
.030
(0.76)
.060
(1.52)
.070
(1.78)
Epoxy
Seal
.030
(0.76)
.600
(15.24)
.200
(5.08)
.020 THK.
(0.51)
A Right Angle, PC Thru-hole
TP12SH9ABE SPDT
Dimensions inches (mm)
.139
(3.53)
.100 TYP.
(2.54)
.200
(5.08)
.125
(3.18)
.030 TYP.
(0.76)
.220
(5.59)
.320
Epoxy Seal
(8.13)
.025
.200 (5.08)
(0.64)
1
.016 TYP.
(0.41)
.158
(4.01)
PC Mounting
.200
(5.08)
.130 (3.30)
123
.100 TYP.
(2.54)
.030 TYP.
(0.76)
.100 TYP.
(2.54)
.043 DIA.
(1.09Ø) TYP.
.200 (5.08) 3 2 1
.020 TYP.
(0.51)
.200
(5.08)
TP11 Models:
omit hole 2.
TP11 Models:
omit terminal 2.
5
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
A Right Angle, PC Thru-hole
TP21SH9ABE DPST
Dimensions inches (mm)
.139
(3.53)
.100 TYP.
(2.54)
.205
(5.21)
.200
(5.08)
.030 TYP.
(0.76)
.220
(5.59)
Epoxy Seal
.025
(0.64)
PC Mounting
.360 4
(9.14)
1
6
.158
(4.01)
.200 (5.08) 3
3
1 4 .130 (3.30)
.030 TYP.
(0.76)
.100 TYP.
.200
(2.54)
(5.08)
.016 TYP.
(0.41)
.043 DIA.
(1.09Ø) TYP.
6 4
.320
(8.13)
.020 TYP.
(0.51)
1
.100 TYP.
(2.54)
.200
(5.08)
AV Vertical Right Angle, PC Thru-hole
TP12SH9AVBE SPDT
Dimensions inches (mm)
.100 DIA.
(2.54Ø)
.030
(0.76)
.185
(4.70)
Notes:
Terminal bend radii and lead-in manufacturing option.
.139
(3.53)
PC Mounting
Epoxy Seal
.025
.320
(0.64)
(8.13)
.130
(3.30)
3
2 .200 TYP. (5.08)
.220
(5.59)
.200
(5.08)
.016
(0.41)
.020 TYP.
.152
1
(0.51)
(3.86) .200
.100 TYP.
(5.08)
(2.54)
TP11 Models:
omit terminal 2.
3
2
1
.030 TYP.
(0.76)
.043 DIA.
(1.09Ø) TYP.
.100 TYP.
3
(2.54)
2
1
.200
(5.08)
TP11 Models:
omit hole 2.
AV Vertical Right Angle, PC Thru-hole
TP21SH9AVBE DPST
Dimensions inches (mm)
.100 DIA.
(2.54Ø)
.030
.185
(0.76) (4.70)
.200
(5.08)
Note: Terminal bend radii and lead-in manufacturing option.
.139
(3.53)
.220
(5.59)
.016
(0.41)
.152
(3.86)
.200
(5.08)
6
PC Mounting
.360
Epoxy Seal
(9.14)
.130
3
.320 6
(3.30)
.025 (8.13) 4
1
(0.64)
.530
(13.46)
4
.200
(5.08)
.020 TYP.
(0.51)
6
.030 TYP.
(0.76)
.043 DIA.
(1.09Ø) TYP.
.200 TYP.
(5.08)
3 6
.200 TYP.
(5.08)
1
4
.200
(5.08)
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
V3 Vertical Mount, V-Bracket
TP12SH9V3BE SPDT
Dimensions inches (mm)
PC Mounting
.100 DIA.
(2.54Ø)
.139 (3.53)
C&K Marking
on Opposite
Side
.220
(5.59)
Epoxy Seal 1 2 3
.016
.020 TYP.
(0.41)
(0.51)
.100 TYP.
.400
(2.54)
(10.16)
TP11 Models:
omit terminal 2.
.355
(9.02)
.130 (3.30)
.030 TYP.
(0.76)
.043 DIA.
(1.09Ø) TYP.
.100 DIA. TYP.
(2.54Ø)
3 .400
.100 TYP.
2 (10.16)
(2.54Ø)
1
TP11 Models:
omit hole 2.
.200
(5.08)
V3 Vertical Mount, V-Bracket
TP21SH9V3BE DPST
PC Mounting
Dimensions inches (mm)
.360
(9.14)
.139 (3.53)
.220
(5.59)
Epoxy Seal
.016
(0.41)
C&K Marking
on Opposite
Side
4
.200
(5.08)
.400
(10.16)
6
.020 TYP.
(0.51)
.100 DIA.
(2.54Ø)
.355
(9.02)
6
.030 TYP.
(0.76)
3 .139 (3.53)
.043 DIA.
(1.09Ø) TYP.
.400
(10.16)
.200 TYP.
(5.08)
.200
(5.08)
.100 TYP.
.200 (2.54)
(5.08)
7
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Contact Material
Option Code
Contact Material
B
Q
G
R
Ratings
Gold¹
Gold¹
P
Terminal
Plating
Low Level/Dry Circuit
0.4 VA Max. @ 20 V AC
or DC Max.
Power
1 AMP @ 120 V AC or 28 V DC
Low Level/Dry Circuit or Power
0.4 VA Max @ 20 V AC or DC
Max. or 28 V DC
Matte-Tin6
Silver4,5
Silver5
Gold over Silver2,3
Gold³
Matte-Tin6
Notes:
See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1. Contacts & Terminals: Copper alloy, with gold plate over nickel plate.
2. End Contacts: Coin silver, with gold plate over nickel plate.
3. Center Contacts & All Terminals: Copper alloy, with gold plate over nickel plate.
4. End Contacts: Coin silver, silver plated.
5. Center Contact & All Terminals: Copper alloy, silver plated.
6. Terminals: Copper alloy, with matte tin over nickel plate.
Any models supplied with P, R, Q, B or G contact material are RoHS compliant. All models
with all options when ordered with R, G, or Q contact material. B contact material standard with A, AV, V3 & W terminations.
Q contact material standard with C & Z terminations. P, R contact materials not available with Z terminations.
Seal
E Epoxy Seal
.040 Max.
(1.02)
Epoxy Seal
Available Hardware
Cap, 0.100”
DIA. Plungers
(Recommended for
S9 plunger)
Cap, 0.100” DIA.
Plungers
.200 DIA.
(5.08Ø)
.100
(2.54)
PART NO.
508101000 WHITE
508102000 BLACK
Material: Nylon
Finish: Gloss
.155
(3.94)
.200 DIA.
(5.08Ø)
.100
(2.54)
PART NO.
538701000 WHITE
538702000 BLACK
Material: Nylon
Finish: Gloss
8
Cap, 0.100” DIA.
Plungers
.155
(3.94)
.310 DIA.
(7.87)
.152
(3.86)
.080
(2.03)
PART NO.
465801000 WHITE
465802000 BLACK
Material: Nylon
Finish: Gloss
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Cap, 0.120” DIA.
Plungers
.120
(3.05)
Cap, 0.120” DIA.
Plungers
.200 DIA.
(5.08Ø)
(.301)
.090
1.000° Max.
Ø R.015
Draft
R.012
.065± .005
.120 .250
P
Ø.310
Cavity ID
Tunnel Gate as Close
6X 45° X .010 Chamfer as Possible to this Surface.
or .010 R. Lead in
.155
(3.94)
PART NO.
708901000 WHITE
708902000 BLACK
Material: Nylon
Finish: Gloss
PART NO.
891D01000 WHITE
891D02000 BLACK
Material: Nylon
Finish: Gloss
Cap, J81 option only
.195
(4.95)
PART NO.
484601000 WHITE
484602000 BLACK
Material: Nylon
Finish: Gloss
.450 SQ.
(11.43)
.240
(6.10)
PART NO.
798201000 WHITE
798202263 BLACK
Material: Nylon
Finish: Matte
Note: Additional nuts, locking rings and lockwashers available separately, see section “Technical Data and Additional Hardware”. Other cap colors available, consult Customer Service Center.
9
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
C&K® Switch Datasheet
TP Series
Tiny Pushbutton Switches
Switches
Available Hardware
Typical Application
Frames snap into panel opening and are independent from switch
mounting. Accurate positioning of the PC mounted switch relative
to the panel opening is necessary to provide proper clearance
between actuator and frame. Available in two basic styles and four
panel thicknesses .047-.125 in. Material: Nylon. Finish: Matte.
Dimensions
Panel Mounting
For Part Numbers
432502263. 432602263
.005 R.
.495 ± .505
(0.13) (12.57 ± 12.83)
Max. TYP .
.595 ± .605
(15.11 ± 15.37)
0.090” (2.29) PANEL THK.
PART NO. 432702263
For Part Numbers
432702263. 432802263
.005 R.
.495 ± .505
(0.13) (12.57 ± 12.83)
Max. TYP.
.620 ± .625
(15.75 ± 15.88)
0.125” (3.18) PANEL THK.
PART NO. 432802263
BLACK
Above frames (part nos. 432XXXXXX) are also available with insert which accepts LED for indicator light assembly. Order insert separately
from frame. Blank insert panel (without hole for LED) also available. LED not included.
Panel Insert with Hole for LED Part No. 894902000
Panel Inserts
Blank Panel Insert without Hole for LED Part No. 476602000 Black
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.
10
© 2024 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: CM.04/22/24
