EP Series
Sealed Tiny Pushbutton Switches
Features/Benefits
•
Sealed against solder &
cleaning processes
Typical Applications
•
Telecommunications and
networking equipment
A
Pushbutton
•
Thru-hole and surface mount models
•
Snap-fitting actuator accepts
standard caps
•
Tape & reel packaging available
•
Computers and peripherals
•
Instrumentation and controls
•
RoHS compliant models available
Models Available
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 mΩ typ. initial @
2-4 V DC, 100 mA, for both silver and gold plated contacts.
INSULATION RESISTANCE: 109
Ω
min.
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
R
Snap-fitting, .215 high
Bushing
D1
Unthreaded
Terminations
A
Right angle, PC thru-hole
C
PC 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)
W
Wire wrap
Seal
E
Epoxy
Contact Material
B
Gold
P
Gold, matte-tin
Q
Silver
S
Silver, matte-tin
G
Gold over silver
R
Gold over silver, matte tin
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–9
www.ck-components.com
EP Series
Sealed Tiny Pushbutton Switches
A
Pushbutton
SWITCH FUNCTION
SWITCH FUNCTION
POS. 1
POS. 2
CONNECTED TERMINALS
POS. 1
POS. 2
NO.
POLES
MODEL
NO.
C&K marking on opposite side
C&K marking on opposite side
SCHEMATIC
EP11
SP
OFF
MOM.
OPEN
1-3
SPST
EP12
ON
MOM.
2-1
2-3
SPDT
SPDT
Omit terminal 2 for
EP11 models.
Part number shown: EP12SD1CBE
Terminal Nos.
For Reference Only
DP
EP21
OFF
MOM.
OPEN
1-3,4-6
DPST
DPST
Terminal Nos.
For Reference Only
Part number shown: EP21SD1CBE
MOM. = Momentary
All models
with all options when ordered with G, L, M Q, R or S contact material.
PLUNGER
S
.215" HIGH
S1
.110" HIGH
S2
.465" HIGH
FP
FLUSH PLUNGER
R
SNAP-FITTING
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.
BUSHING
D1
UNTHREADED
NOTE:
Internal actuator o-ring standard.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–10
www.ck-components.com
EP Series
Sealed Tiny Pushbutton Switches
TERMINATIONS
C
PC THRU-HOLE
SP
DP
SP
DP
A
W
WIRE WRAP
Pushbutton
PC MOUNTING
EP11 - Omit
center hole.
SP and DP
SP and DP
A
RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
EP12SD1ABE
SPDT
EP11 Models:
omit terminal 2.
EP11 Models:
omit thru-hole 2.
A
RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
EP21SD1ABE
DPST
AV
VERTICAL RIGHT ANGLE, PC THRU-HOLE
PC MOUNTING
EP12SD1AVBE
SPDT
NOTE:
Terminal bend radii and lead-in manufacturing option.
EP11 Models:
omit terminal 2.
EP11 Models:
omit hole 2.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–11
www.ck-components.com
EP Series
Sealed Tiny Pushbutton Switches
A
Pushbutton
AV
VERTICAL RIGHT ANGLE, THRU-HOLE
PC MOUNTING
TERMINATIONS
EP21SD1AVBE
DPST
NOTE:
Terminal bend radii and lead-in manufacturing option.
AV3
VERTICAL RIGHT ANGLE, SNAP-IN, PC THRU-HOLE
PC MOUNTING
EP12SD1AV3BE
SPST
EP11 Models:
omit hole 2.
SA
RIGHT ANGLE, SURFACE MOUNT
PC MOUNTING
SMT
.320
(8,13)
EP12SD1SAPE
SPDT
.410 MAX
(10,41)
EP11 Models:
omit pad 2.
EP11 Models:
omit terminal 2.
Available with P contact material only.
Not Available on DPST models.
SA1
RIGHT ANGLE, SURFACE MOUNT
.276
(7,0)
.041
(1,04)
.100
(2,54)
.181
(4,60)
.220
(5,60)
.313
(7,95)
YY/WW
0.4VA MAX
PC MOUNTING
.320
(8,13)
.272
(6,90)
.071 TYP.
(1,80)
.059
(1,50)
.059
(1,50)
EPOXY SEAL
EP12SD1SA1BE
SPDT
.325
(8,26)
.400
(10,16)
.051
(1,30)
.121
(3,07)
.217
(5,51)
.234
(5,94)
.160
(4,06)
.200
(5,08)
1
2
TERMINAL NOS.
.032 TYP.
3 FOR REF. ONLY
(0,80)
.082 TYP.
(2,10)
.100
(2,54)
.020 TYP
(0,51)
.200
(5,08)
SA1 is only available with B contact materials option + S plunger.
Not Available on DPST models.
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–12
www.ck-components.com
EP Series
Sealed Tiny Pushbutton Switches
TERMINATIONS
V3
V31
VERTICAL MOUNT, V-BRACKET
VERTICAL MOUNT, V-BRACKET, SNAP-IN
PC MOUNTING
A
Pushbutton
EP11 Models:
omit centerhole.
V31 SNAP-IN
EP12SD1V3BE
SPDT
EP11 Models:
omit terminal 2.
V3
VERTICAL MOUNT, V-BRACKET
PC MOUNTING
EP21SD1V3BE
DPST
CONTACT MATERIAL
OPTION
CODE
CONTACT
MATERIAL
TERMINAL
PLATING
GOLD
1
GOLD
1
MATTE-TIN
6
LOW LEVEL/DRY CIRCUIT
RATINGS
B
P
Q
SILVER
4,5
0.4 VA MAX. @ 20 V AC OR DC MAX.
SILVER
5
MATTE-TIN
6
POWER
1 AMP @ 120 V AC OR 28 V DC.
S
G
GOLD OVER SILVER
2,3
GOLD
3
MATTE-TIN
6
LOW LEVEL/DRY
CIRCUIT OR POWER
0.4 VA MAX @ 20 V AC OR DC MAX. OR
1 AMP @ 120 V AC OR 28 V DC.
R
* Note: 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
6
TERMINALS: 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.
over nickel plate.
4
END CONTACTS: Coin silver, silver plated.
5
CENTER CONTACT & ALL TERMINALS: Copper alloy, silver plated.
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.
SEAL
E
EPOXY SEAL
Third Angle
Projection
Dimensions are shown: Inches (mm)
Specifications and dimensions subject to change
A–13
www.ck-components.com
