Cylindrical Style EMI Filters
CK Series – .375 Dia. – Button Hermetically Sealed –
Circuits Available – C & L
APPLICATIONS
The CK series offers effective filtering
from 100 KHz to 10 GHz. Glass sealed
for hermeticity, this medium profile series
is impervious to high moisture, solvents,
or other severe environmental conditions
commonly encountered in military appli-
cations. It is designed for bulkhead
mounting in a slotted hole with nut and
lockwasher supplied. This series is ideal
for low to medium impedance circuits
where large amounts of capacitance to
ground can be tolerated. In the “L”
section version an internal ferrite bead
element provides both inductance and
series resistance (lossy characteristic)
which improves insertion loss and pro-
vides superior transient performance.
Alternate lead configurations or special
capacitance values may be ordered.
Custom packages or filter arrays utilizing
the CK series can be furnished.
CHARACTERISTICS
• Meets or exceeds the applicable
requirements of MIL-F-15733, and the
environmental/test requirements of MIL-
F-28861.
for the L-section version.
• High DC current rating: 15 Amps.
• High capacitance values available.
• Conservatively rated for 125 VAC/400
Hz in certain values.
• Glass hermetic seal on both ends.
SPECIFICATIONS
1. Case/Terminal Plating:
• Internal ferrite bead provides inductance
Electro-tin standard –
Silver or gold available
STANDARD CONFIGURATION
2. Material:
Case: Brass standard – Steel available
End Seal: Mild steel
.070 .010
(2 PLC)
.250-28 UNF-2A (1/4-28)
.050
.375 DIA.
.010
Terminals: Nickel-iron alloy
3. Operating Temperature Range:
-55°C to +125°C
4. Electrical Characteristics:
A. Rated Voltage: See chart
B. Insulation Resistance:
.115
REF.
.200
.010
At 25°C: 1,000 megohm-microfarad min.,
or 50,000 megohms min.,
whichever is less, at the rated
DC voltage
At 125°C: 100 megohm-microfarad
min., or 5,000 megohms
.190
MAX
.150
MAX.
.250
.010
*
.010
* = A FOR .187 THREAD
B FOR .312 THREAD
(See Note 1)
min., whichever is less
C. Dielectric Withstanding Voltage (DWV):
R-level designs:
CIRCUIT DIAGRAMS
2.0 times rated DC voltage
Class B, Class S designs:
2.5 times rated DC voltage
D. Capacitance: Values listed in chart are
“guaranteed minimum value” (GMV)
5. Marking:
Standard Marking: AVX, AVX part number,
rated current, voltage, lot code
B. CK2 only: Letter “L” to denote ferrite bead
inductor at threaded end
THRD
END
L2
C
CK2 (See Note 2)
CK1
Notes:
millimeters (inches)
0.25 (.010) 4.83 (.190)
1.27 (.050) 5.08 (.200)
1.78 (.070) 6.35 (.250)
2.92 (.115) 7.93 (.312)
3.81 (.150) 9.53 (.375)
1. Thread length option.
EXAMPLE: CK1CA-103
(.187 thrd. L)
3. Metric equivalent dimen-
sions given for informa-
tion only.
CK1CB-103
(.312 thrd. L).
C. See Reliability Codes section for definition
of Reliability Level marking. See How to
Order section for part number construc-
tion.
2. All CK2 L-Section Filters
have inductor (bead) at
threaded end.
4.75 (.187)
—
—
(See Note 3)
6. Installation:
A. Mounting Torque: 44 oz-in. 4 oz-in.
B. Refer to “Installation, Handling, Hardware
Options” section of the catalog.
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