A–9
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
EP Series
Sealed Tiny Pushbutton Switches
Features/Benefits
•Sealed against solder &
cleaning processes
•Thru-hole and surface mount models
•Snap-fitting actuator accepts
standard caps
•Tape & reel packaging available
•RoHS compliant models available
Typical Applications
•Telecommunications and
networking equipment
•Computers and peripherals
•Instrumentation and controls
Specifications
CONTACT RATING: B contact material: 0.4 VA max. @
20 V AC or DC max. See page A-13 for additional ratings.
ELECTRICAL LIFE: EP11, EP21 models: 60,000 make-and-break
cycles at full load. EP12 models: 30,000 cycles.
CONTACT RESISTANCE: Below 20 mΩtyp. initial @
2-4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109Ωmin.
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).
DEGREE OF PROTECTION: IP57; Protection against harmful dust
deposit, full-scale voltage protection, temporary immersion.
PACKAGING: Surface mount switches standard in anti-static
tape and reel packaging per EIA 481-3, see page A-14 for
drawings and reel information. Tape and cover strip are
conductive for use near statically sensitive components,
consult Customer Service Center.
Materials
CASE & BUSHING: High temperature material, glass filled nylon 4/6,
flame retardant, heat stabilized (UL 94V-0) on SMT models; glass
filled nylon 6/6 on PC Through Hole models.
PLUNGER: Thermoplastic polyester or glass filled nylon (UL 94V-0),
with internal o-ring seal. SA surface mount: High temperature
material, glass filled LCP (UL 94V-0).
SWITCH SUPPORT: Brass, matte-tin plated.
CONTACTS & TERMINALS: B contact material: Copper alloy,
with gold plate over nickel plate. See page A-13 for additional
contact materials.
TERMINAL SEAL: Epoxy.
NOTE: Any models supplied with Q, B, P, S, R or G contact material are RoHS compliant.
NOTE: Specifications and materials listed above are for switches with standard options.
For information on specific and custom switches, consult Customer Service Center.
CAUTION: PC mounting layouts and pads as shown are designed to be compatible with the
latest equipment and reflow techniques. Care should be taken in the design and location of
PC lands to suit individual needs. Orientation relative to reflow direction may significantly
impact solder joint integrity.
Build-A-Switch
To order, simply select desired option from each category and place in the appropriate box. Available options are shown
and described on pages A-10 thru A-14. For additional options not shown in catalog, consult Customer Service Center. All
models are process sealed to withstand machine soldering temperatures and pressure wash cleaning methods.
Switch Function
EP11 SPST Off-Mom.
EP12 SPDT On-Mom.
EP21 DPST Off-Mom.
Plunger
S.215" high
S1 .110" high
S2 .465" high
FP Flush
RSnap-fitting, .215 high
Bushing
D1 Unthreaded
Contact Material
BGold
PGold, matte-tin
QSilver
SSilver, matte-tin
GGold over silver
RGold over silver,matte tin
Seal
EEpoxy
Models Available
Terminations
ARight angle, PC thru-hole
CPC Thru-hole
AV Vertical right angle, PC thru-hole
AV3 Vertical right angle, snap-in, PC thru-hole
SA Right angle, surface mount
SA1 Right angle, surface mount rear facing
V3 Vertical mount, v-bracket
V31 Vertical mount, v-bracket, snap-in
(EP11 & EP12 only)
WWire wrap
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Third Angle
Projection
A
Pushbutton
A–10
EP Series
Sealed Tiny Pushbutton Switches
SWITCH FUNCTION
PLUNGER
BUSHING
S .215" HIGH
D1 UNTHREADED
NOTE: Internal actuator o-ring standard.
S1 .110" HIGH S2 .465" HIGH FP FLUSH PLUNGER R SNAP-FITTING
DPST
1-3,4-6OPENMOM.OFF
EP21
DP
SPST
SPDT
1-3
2-3
OPEN
2-1
MOM.
MOM.
OFF
ON
EP11
EP12
SP
SCHEMATIC
CONNECTED TERMINALS
POS. 1 POS. 2
SWITCH FUNCTION
POS. 1 POS. 2
MODEL
NO.
NO.
POLES
DPST
SPDT
Part number shown: EP21SD1CBE
S1& S2 actuators are not available with EP12 & EP21 models or SA1 termination style. FP & R actuators are not available with EP21 model or SA1 termination style.
NOTE: Caps available for plunger options, see page A-14.
Terminal Nos.
For Reference Only
Terminal Nos.
For Reference Only
Part number shown: EP12SD1CBE
MOM. = Momentary
All models with all options when ordered with G, L, M Q, R or S contact material.
C&K marking on opposite side C&K marking on opposite side
Omit terminal 2 for
EP11 models.
A–11
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Third Angle
Projection
A
Pushbutton
EP Series
Sealed Tiny Pushbutton Switches
TERMINATIONS
PC MOUNTING
PC MOUNTING
SP DP
EP11 - Omit
center hole.
PC MOUNTING
SP DP
ARIGHT ANGLE, PC THRU-HOLE
ARIGHT ANGLE, PC THRU-HOLE
CPC THRU-HOLE WWIRE WRAP
SP and DP
SP and DP
EP12SD1ABE
SPDT
EP21SD1ABE
DPST
PC MOUNTING
EP11 Models:
omit hole 2.
AV VERTICAL RIGHT ANGLE, PC THRU-HOLE
EP12SD1AVBE
SPDT
NOTE: Terminal bend radii and lead-in manufacturing option.
EP11 Models:
omit terminal 2.
EP11 Models:
omit terminal 2.
EP11 Models:
omit thru-hole 2.
A–12
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
EP Series
Sealed Tiny Pushbutton Switches
TERMINATIONS
PC MOUNTING
PC MOUNTING
EP11 Models:
omit hole 2.
.410 MAX
(10,41)
.320
(8,13)
EP11 Models:
omit pad 2.
PC MOUNTING
SA RIGHT ANGLE, SURFACE MOUNT
AV3 VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
AV VERTICAL RIGHT ANGLE, THRU-HOLE
EP21SD1AVBE
DPST
EP12SD1AV3BE
SPST
EP12SD1SAPE
SPDT
NOTE: Terminal bend radii and lead-in manufacturing option.
Available with P contact material only.
Not Available on DPST models.
SA1 is only available with B contact materials option + S plunger.
Not Available on DPST models.
EP11 Models:
omit terminal 2.
SMT
SA1 RIGHT ANGLE, SURFACE MOUNT
EP12SD1SA1BE
SPDT
YY/WW
0.4VA MAX
(2,54)
.100
.051
(1,30)
.100
(2,54)
.041
(1,04)
.020 TYP
(0,51)
.320
(8,13)
(5,08)
.200
.276
(7,0)
.121
(3,07)
.160
(4,06)
.059
(1,50)
.400
(10,16)
.325
(8,26)
.220
(5,60)
.181
(4,60)
.217
(5,51)
.234
(5,94)
.082 TYP.
(2,10)
.200
(5,08)
.032 TYP.
(0,80)
.272
(6,90)
.059
(1,50)
.071 TYP.
(1,80)
.313
(7,95)
EPOXY SEAL
TERMINAL NOS.
FOR REF. ONLY
123
PC MOUNTING
Third Angle
Projection
A–13
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
Third Angle
Projection
A
Pushbutton
EP Series
Sealed Tiny Pushbutton Switches
TERMINATIONS
CONTACT MATERIAL
SEAL
PC MOUNTING
V31 SNAP-IN
PC MOUNTING
EP11 Models:
omit centerhole.
V3 VERTICAL MOUNT, V-BRACKET
V31 VERTICAL MOUNT, V-BRACKET, SNAP-IN
V3 VERTICAL MOUNT, V-BRACKET
EEPOXY SEAL
EP12SD1V3BE
SPDT
EP21SD1V3BE
DPST
* Note: See Technical Data section of this catalog for RoHS compliant and compatible definitions and specifications.
1CONTACTS & TERMINALS: Copper alloy, with gold plate over nickel plate.
2END CONTACTS: Coin silver, with gold plate over nickel plate.
3CENTER CONTACTS & ALL TERMINALS: Copper alloy, with gold plate
over nickel plate.
4END CONTACTS: Coin silver, silver plated.
5CENTER CONTACT & ALL TERMINALS: Copper alloy, silver plated.
6TERMINALS: Copper alloy, with matte tin over nickel plate.
NOTE: Any models supplied with Q, B P
, S ,R or G contact material are RoHS compliant.
All models with all options when ordered with G, L, M, S, R or Q contact material.
K, L and M options represent Non RoHS tin lead product and are not recommended for new
designs. For additional information please contact Customer Service.
EP11 Models:
omit terminal 2.
OPTION
CODE CONTACT
MATERIAL TERMINAL
PLATING
SILVER 5
MATTE-TIN 6
GOLD 1
SILVER 4,5
GOLD OVER SILVER 2,3 GOLD 3
MATTE-TIN 6
GOLD 1
MATTE-TIN 6LOW LEVEL/DRY CIRCUIT
POWER
LOW LEVEL/DRY
CIRCUIT OR POWER
0.4 VA MAX. @ 20 V AC OR DC MAX.
1 AMP @ 120 V AC OR 28 V DC.
0.4 VA MAX @ 20 V AC OR DC MAX. OR
1 AMP @ 120 V AC OR 28 V DC.
B
P
Q
S
G
R
RATINGS
A–14
EP Series
Sealed Tiny Pushbutton Switches
AVAILABLE HARDWARE
TAPE & REEL
EP11FPDISAPE
EP11SDISAPE
.080
(2,03)
.310 DIA.
(7,87È) .152
(3,86)
.155
(3,94)
.200 DIA.
(5,08È)
.100
(2,54)
For part number EPXX-SA
OUTSIDE DIAMETER 13.00 (330,0)
PILOT HOLE .512 (13,0)
QUANTITY PER REEL 600
REEL INFORMATION
Cap
PART NO.
508101000 WHITE
508102000 BLACK
508103000 RED
Material: Nylon
Finish: Gloss
Not for use on S1 plunger
Cap
PART NO.
465801000 WHITE
465802000 BLACK
465803000 RED
Material: Nylon
Finish: Gloss
Not for use on S1 plunger
Cap
Compatible with snap-fitting plungers
EP11 & EP12 Models. R option only.
PART NO.
585A01000 WHITE
585A02000 BLACK
585A03000 RED
Material: Nylon
Finish: Gloss
Cap
Compatible with snap-fitting plungers
EP11 & EP12 Models. R option only.
PART NO.
785A01000 WHITE
785A02000 BLACK
785A03000 RED
Material: Nylon
Finish: Gloss
NOTE: Other colors available, consult Customer Service Center.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
www.ck-components.com
A
Pushbutton
For part number EPXX-SA1
OUTSIDE DIAMETER 13.00 (330,0)
PILOT HOLE .795 (20,20)
QUANTITY PER REEL 500
REEL INFORMATION
YY/WW
0.4VA MAX
0.079
(2,0)
0.157
(4,0)
0.630
(16,00)
0.069
(1,75)
1.732
(44,0)
0.996
(25,30)
0.014
(0,35)
0.297
(7,55)
0.795
(20,2)
0.059
(1,50)
FEED DIRECTION
