Bolt Style EMI Filters
SA Series – 4-40 Thread - Epoxy Sealed –
Circuits Available – C & L
APPLICATIONS
The SA series provides effective filtering
in the RF and MICROWAVE frequency
spectrums from 10 MHz through 26 GHz.
Designed for mounting in a tapped
bulkhead or with the standard nut and
lockwasher provided, it is ideal for high
impedance circuits where large capaci-
tance values are not practical. 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. The
SA series comes with a standard .020
diameter beryllium copper lead. Alternate
lead lengths, diameters of .016 or .026
and alternate materials in steel or half-
hard copper are available.
CHARACTERISTICS
• Meets or exceeds the applicable portions
of MIL-F-28861/6. See QPL listings.
• Smallest screwbody filter available.
• Features rugged monolithic discoidal
capacitor construction.
• Epoxy seal on both ends.
SPECIFICATIONS
1. Plating: Silver standard – Electro-tin or
gold available
2. Material:
Case: Cold rolled steel
Leads: Beryllium copper (steel or half/hard
copper leads available)
3. Operating Temperature Range:
-55°C to +125°C
4. Insulation Resistance:
At 25°C: 1,000 megohm-microfarad
min., or 100,000 megohms
min., whichever is less
At 125°C: 100 megohm-microfarad
min., or 10,000 megohms
min., whichever is less
5. Dielectric Withstanding Voltage (DWV):
R-level designs:
2.0 times rated DC voltage
Class B, Class S designs:
2.5 times rated DC voltage
6. DC Resistance (DCR): .02 ohm,
maximum
7. Dissipation Factor (DF): 3% maximum
8. Rated DC Current: 5 Amps, maximum
9. Recommended Mounting Torque:
32 oz-in. ± 4 oz-in.
10. Supplied with mounting nut and lock-
washer - See Filter Design Guide Screw
and Locking Washer Table
11. Insertion Loss for the “C” and “L” sections
are equivalent due to the saturation
characteristic of the ferrite bead element
at rated current. At lower currents the “L”
becomes much more effective.
STANDARD CONFIGURATION
.154
.159
A
.030
MAX.
.112-40 UNC-2A
(4-40)
.020
±.002
(Std. - See Note 1)
.030
MAX.
.220
±.010
.240
±.020
.360
±.020
A = .120
±.005
(See Note 2)
CIRCUIT DIAGRAMS
THRD
END
C
SA1
millimeters (inches)
0.05 (.002) 3.05 (.120)
0.13 (.005) 3.68 (.145)
0.25 (.010) 3.91 (.154)
0.41 (.016) 4.04 (.159)
0.51 (.020) 5.59 (.220)
0.66 (.026) 6.10 (.240)
0.76 (.030) 9.14 (.360)
2.84 (.112)
—
—
(See Note 4)
Notes:
1. Standard catalog designs
have .020" dia. lead. MIL-F-
28861/6 calls for .026" dia.
.026" dia. will not be supplied
unless specified.
2. “A” dimension of .120 ± .005
will satisfy M28861/6-003
requirement for .145 ± .030.
All “SA” series are supplied
A = .120 ± .005.
L
2
SA2 (See Note 3)
3. All SA2 L-Section Filters have
inductor (bead) at threaded
end.
4. Metric equivalent dimensions
given for information only.
19
Bolt Style EMI Filters
SA Series – 4-40 Thread - Epoxy Sealed –
Circuits Available – C & L
SPECIFICATIONS
AVX
P/N
SA1C1-102
SA1C1-502
SA1C1-103
SA1C1-273
SA1C1-503
SA2C1-102
SA2C1-502
SA2C1-103
SA2C1-273
SA2C1-503
SA1A1-102
SA1A1-502
SA1A1-103
SA1A1-273
SA1A1-453
SA2A1-102
SA2A1-502
SA2A1-103
SA2A1-273
SA2A1-453
SA1B1-102
SA1B1-502
SA1B1-103
SA2B1-102
SA2B1-502
SA2B1-103
1
CKT
C
C
C
C
C
L2
L2
L2
L2
L2
C
C
C
C
C
L2
L2
L2
L2
L2
C
C
C
L2
L2
L2
CAP
1
1000
5000
.01
.027
.05
1000
5000
.01
.027
.05
1000
5000
.01
.027
.045
1000
5000
.01
.027
.045
1000
5000
.01
1000
5000
.01
DC
Voltage
50
50
50
50
50
50
50
50
50
50
100
100
100
100
100
100
100
100
100
100
200
200
200
200
200
200
DCR
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
.02
1
MHz
–
–
4
10
15
–
–
4
10
15
–
–
4
10
14
–
–
4
10
14
–
–
4
–
–
4
Insertion Loss
2
Per MIL-STD-220, +25°C
10
100
200
1
MHz
MHz
MHz
GHz
4
20
25
25
15
34
41
42
21
35
42
50
30
39
43
65
35
42
45
70
4
20
27
30
15
35
41
45
21
35
44
50
30
50
45
65
37
45
45
70
4
20
25
25
15
35
41
42
21
35
42
50
30
39
43
65
35
42
45
70
4
20
27
30
15
35
41
45
21
35
44
50
30
50
45
70
37
45
45
70
4
20
25
25
15
34
41
42
21
35
42
50
4
20
27
30
15
35
41
45
21
35
44
50
10
GHz
55
55
70
70
70
60
60
70
70
70
55
55
70
70
70
60
60
70
70
70
55
55
70
60
60
70
Decimal point values indicate capacitance in microfarads.
Non-decimal point values indicate capacitance in picofarads.
Insertion loss limits are based on theoretical values.
Actual measurements may vary due to internal capacitor
resonances and other design constraints.
2
20
Screw & Locking Washer Table
HEX NUT AND INTERNAL TOOTH LOCKWASHER
THREAD
A
HEX NUT
B
C
WASHER
D
Size Thread
4-40 UNC-2B
(.112-40)
A
.187*
.180
.257
.241
.250*
.241
.313
.307
.250
.241
.345
.336
.250
.241
.250*
.241
.311*
.308
.377*
.365
Hex Nut
B
.067*
.057
.083
.073
.083*
.073
.114
.104
.080
.070
.130
.120
.083
.073
.073*
.063
.096*
.091
.096*
.091
C
.225*
.215
.265
.255
.285*
.275
.336
.325
.311
.300
.381
.370
.383
.372
.383*
.372
.408*
.396
.435*
.425
Lockwasher
D
.020*
.010
.018
.012
.025*
.015
.025
.015
.023
.013
.027
.017
.023
.013
.023*
.013
.021*
.015
.027*
.017
(STD)
(ALT)
8-32 UNC-2B
(.164-32)
(STD)
(ALT)
10-32 UNF-2B
(.190-32)
(STD)
(ALT)
12-32 UNEF-2B
(.216-32)
(STD)
(ALT)
1/4-28 UNF-2B
(.250-28)
5/16-24 UNF-2B
(.312-24)
*Used for MIL-F-28861 units.
Thread
(.112-40)
4-40 UNC-2A
(.164-32)
8-32 UNC-2A
(.190-32)
10-32 UNC-2A
(.216-32)
12-32 UNEF-2A
(.250-28)
1/4-28 UNF-2A
(.312-24)
5/16-24 UNF-2A
Recommended Mounting Torque
32 oz-in. ± 4 oz-in.
64 oz-in. ± 4 oz-in.
64 oz-in. ± 4 oz-in.
64 oz-in. ± 4 oz-in.
44 oz-in. ± 4 oz-in.
60 oz-in. ± 4 oz-in.
4
How To Order
Notes
NOTE 1:
CAPACITANCE CODE
All AVX Filters part numbers, with exception of certain cylin-
drical styles, show total filter capacitance using the 3-digit
EIA code. The first two digits are significant: the last digit is
the multiplier.
Example:
103=10000 picofarads
125=1200000 picofarads
(1.2 microfarads)
It is important to note that
¹
filters and multisection filters are
described using the EIA code from the standpoint of total
capacitance. Capacitance is understood to be specified
as “guaranteed minimum value” (GMV) unless otherwise
specified. AVX Filters can supply ±20% or other specified
tolerances at an additional charge. Contact AVX Filters
Applications Engineering for further information.
NOTE 4:
VOLTAGE CODES AND FILTER
VOLTAGE RATINGS
IMPORTANT:
please contact AVX Filters Applications
Engineering when considering DC-rated filter designs for
possible use in AC applications. As a general rule, DC
designs may be derated for AC applications. Let us assist
you.
The voltage code letters must be selected consistent with
the capabilities as outlined in the product selection tables for
a given filter type. It is important to note that the same code
letter may signify a different voltage rating depending upon
filter type. For example: the “L” code signifies a 200
VDC/125 VAC rating for a bolt-style filter, but it describes a
300 VDC/125 VAC design when applied to a JD-style filter.
NOTE 2:
RELIABILITY CODES
The customer must select the reliability code to be consis-
tent with the filter application. As a minimum, all catalog
filters are available as R-level designs.
Options:
“-” signifies an R-level filter design without the optional
R-level high-rel screening
“R” R-level design with optional R-level high-rel screening
also specified
“B” Class B design with Group A screening per M28861 for
Class B filters
“S” Class S design with Group A screening per M28861 for
Class S (space grade) filters
Please refer to the catalog section on Reliability for additional
information on how to select reliability codes.
NOTE 5:
TERMINAL AND LEADWIRE CODES
Non-standard terminal configurations including special
materials or finishes are available. Please indicate a descrip-
tion and/or outline drawing when requesting a non-standard
terminal (code “3”).
NOTE 6:
SPECIAL INFORMATION FOR
CYLINDRICAL STYLE FILTERS
L-section filter designs must be specified with regard to
“standard” or “reverse” configuration. The L-section filter is
normally utilized with the capacitor on the high impedance
side of the circuit and the inductor looking into the low
impedance side. Compact filter types such as the BK2
or CK2 button filters with ferrite bead inductors are only
supplied with the bead assembled into the threaded end.
GK2 and JD2 L-section filters are normally supplied with
a schematic or other marking to indicate location of the
inductor.
AC-rated catalog designs incorporate reduced values of
capacitance to limit reactive current heating (and subsequent
filter temperature rise) to safe levels. Do not specify a
DC-rated filter with larger capacitance for an AC application
without contacting AVX Filters Applications Engineering.
NOTE 3:
SPECIAL DESIGN CODE
(ASSIGNED BY AVX FILTERS)
A special suffix to the standard part number will be added by
AVX Filters Applications Engineering to describe special
designs or designs that are controlled by customer specifi-
cations. It is important to note that even in those instances
where a customer drawing describes a standard catalog
design it is AVX Filters policy to assign a special part number
to the customer drawing for configuration control.
51
How To Order
Part Number Construction
SOLDER-IN STYLE
Z
S
2
C
2
–
1
0
3
H
X
X
Basic Style
zz
Z
Y
X
W
Glass Seal
Orientation
S - Standard
R - Reverse
Q - Hermetic
(Glass Both
Sides)
N - No Glass
(Epoxy Both
Sides)
Circuit
0 - Non-Feed
Thru Post
1 - Feed Thru
2 - L-Section
Voltage
A - 100 VDC
B - 200 VDC
C - 50 VDC
E - 400 VDC/
230 VAC
F - 500 VDC
G - 1000 VDC
K - 250 VDC
L - 300 VDC or
200 VDC/
115 VAC
M - 350 VDC
N - 70 VDC
Reliability
Code
See Notes
Use “H”
to specify
Hi-
Temperature
(300°C)
Rated
Design
Y - Solder
Lead
2 - Nickel Iron
(Standard)
3 - Special
4 - Aluminum
Compatible with
seating flange
(Std. Lead)
5 - Aluminum
Compatible with
seating flange
(Special Lead)
D - Aluminum
Compatible with
centering flange
(Std. Lead)
E - Aluminum
Compatible with
Centering flange
(Special Lead)
F - Aluminum
Compatible with
Special Design
3-Digit
Capacitor
Code
(In pF)
Special
Design
(Customer
DWG. or QPL
Designation)
BOLT STYLE
SB
2
A
1
–
1
0
3
X
X
Circuit
1 - Feedthru (C)
2 - L-Section (L)
3 - PI-Section (¹)
Basic Style
SA-4-40
Epoxy Sealed
SG-6-32
Epoxy Sealed
SB-8-32
Epoxy Sealed
SM-8-32
Hermetic Sealed
SH-10-32 Epoxy Sealed
SJ-12-28 Epoxy Sealed
SC-12-32 Epoxy Sealed (.187 Hex)
SP-12-32 Epoxy Sealed (.250 Hex)
SN-12-32 Hermetic Sealed
SL-1/4-28 Epoxy Sealed
SD-5/16-24 Epoxy Sealed
SF-5/16-32 Epoxy Sealed
Voltage
A - 100 VDC
B - 200 VDC
C - 50 VDC
F - 500 VDC
G - 1000 VDC
H - 150 VDC
J - 600 VDC
K - 250 VDC
L - 200 VDC/
125 VAC
M - 350 VDC
N - 70 VDC
Reliability
Code
(-See Note 2)
Special Design
(-See Note 3)
Terminal
1 - Copper
2 - Steel
3 - Special Lead
Design
4 - Beryllium
Copper
3-Digit Capacitor
Code
(-See Note 1)
52
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