MIL-C-38999 Series I, II, III, IV Filter Connectors
These miniature circular filter connectors are de-
signed to combine the functions of a standard
electrical connector and a feed-thru filter into one
compact package. They are designed to meet the
applicable portions of military specification
MIL-C-38999 series I, II, III and IV. These connec-
tors feature arrangements that will accommodate
up to 12B contacts. Contsult factory for socket
versions.
Note: The TKJ replaces the obsolete KJJ Series
For detailed dimensional information, request a
copy of the ITT Cannon
Filter Connectors
catalog.
How to Order - TKJL/TKJ/TKJA/TKJB
T
KJ
L
O
C
*
A
*
L
P
N
*
FILTER SERIES INDICATOR
SERIES PREFIX
MODIFIER
SHELL STYLE
TERMINATION
SHELL SIZE
HARDWARE FINISH
CONTACT ARRANGEMENTS
CAPACITANCE INDICATOR
CONTACT TYPE
ALTERNATE SHELL POSITION
SPECIAL MODIFIERS
FILTER SERIES INDICATOR
T - Transverse Monolith
SERIES PREFIX
KJ - ITT Cannon prefix
MODIFIER
L - Series I scoop-proof shell
(omit if Series II desired)
A - Series III Triple Start Thread
(omit if Series II desired)
B - Series IV - Available in receptacle only
(omit if Series II desired)
SHELL STYLE
0 - Wall mounting receptacle (front panel
mounting)
2 - Box mounting (front panel mounting)
3 - Wall mounting (black panel mounting)
5 - Box mounting receptacle (back panel
mounting)
7 - Jam nut receptacle
TERMINATION
C - Solder pot termination
E - P.C. tails
S - Crimp Piggyback
W - Wire wraps
SHELL SIZE
Series I, III and IV:
11, 13, 15, 17, 19, 21, 23, and 25
Series II:
10, 12, 14, 16, 18, 20, 22, and 24
HARDWARE FINISH
A - Bright cadmium over nickel plate
B - Olive drab cadmium over nickel plate
N - Electroless nickel plate (preferred)
CONTACT ARRANGEMENTS
See page 315.
CAPACITANCE INDICATOR*
L - 32,000-45,000 PF
M - 8,000-12,000 PF
T - 3,300-5,000 PF
H - 850- 1,300 PF
CONTACT TYPE
P-pin; S-socket (Consult factory for availability of
sockets)
ALTERNATE SHELL POSITION
N (normal), A, B, C, D
SPECIAL MODIFIERS
Consult factory for definition and availability
NOTES:
1) Backshell thread and teeth.
Series I and II - Provided only on shell types indicated on dimension sheets.
Series III - No threads or teeth provided.
Series IV - Provided with threads and teeth.
2) Hermetic versions of the filter connectors can be provided. Consult ITT Cannon for availability.
3) Series III and IV can only be shell style 0 or 7.
Dimensions are shown in inches (millimeters).
Dimensions subject to change.
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MIL-C-38999 Series I, II, III, IV Filter Connectors
Performance and Material Specifications
MATERIALS AND FINISHES
Shell
Insulator
Contacts
Grommet and Seal
Jam Nut
Grounding Spring
Aluminum alloy*
High grade plastic/epoxy
Copper alloy, gold plate
Silicone base elastomer
Aluminum alloy*
Beryllium copper, silver plate
ELECTRICAL (Size #16, #20 and #22)
Filter Description
Catalog Indicator
Voltage Rating
Current Rating (amp DC)
Insulation Resistance, 2 min. electrification time max. at 25˚C
DWV, sea level, with 500 microamps max.
charge/discharge
Capacitance at 1 KHz, 0.1 V rms Picofarads
Freq. MHz
0.1
Attenuation per MIL-STD-220
at 25˚C with no applied
voltage or current.
1
2
10
100
500 to 1000
Filter Type/Construction
2 min.
10 min.
16 min.
40 min.
60 min.
70 min.
Pi
-
2 min.
7 min.
18 min.
55 min.
60 min.
Pi
-
-
2 min.
8 min.
45 min.
55 min.
Pi
-
-
-
2 min.
30 min.
50 min.
Pi
300 VDC size 22
500 VDC size 16 & 20
32,000
45,000
8,000
12,000
3300
5000
850
1,300
Low Freq.
L
Mid Freq.
M
Std. Freq.
T
High Freq.
H
200 VDC - 120 VAC rms 400 Hz
15 amp - size 16/7.5 amp - size 20/5.0 amp, size 22
5,000 megohms min. @ 100 VDC
500 VDC
*Finish as noted in How to Order section.
Consult factory for higher or mixed attenuation values and higher voltage ratings.
Contact Extension - All Connectors
REAR OF
METAL SHELL
SOLDER POT
EXTENSION
Note: Solder pot extension typically will be .200 (5.08)
max. beyond shell rear.
Contact - Pin and Sockets
Standard Contact Terminations
Finish:
Gold plate per MIL-G-45204, Type 1,
Class 1, over nickel plate per QQ-N-290.
A
C
DIA.
B
DIA.
Pin/Solder Pot
.186
(4.72)
MAX.
DIA. .020 (.51) X.250 (6.35) EXT.
BEYOND SHELL REAR
Pin/Printed Circuit
Socket/Solder Pot
B
C
DIA. DIA.
.025 (.64) SQ. X .500 (12.70) EXT.
BEYOND SHELL REAR
Pin/Wire Wrap
Contact
Size
#22
#20
#16
B
Dia.
.039 (0.97)
.035 (0.89)
.047 (1.19)
.042 (1.07)
.077 (1.96)
.068 (1.73)
C
Dia.
.056 (1.42)
.051 (1.30)
.066 (1.68)
.061 (1.55)
.104 (2.64)
.097 (2.46)
Dimensions are shown in inches (millimeters).
Dimensions subject to change.
A
.115 (2.92)
.095 (2.41)
.125 (3.18)
.110 (2.79)
.170 (4.32)
.150 (3.81)
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MIL-C-38999 Series I, II, III, IV Filter Connectors
Contact Arrangements
Engaging view, pin insert
Series I, III & IV
Series II
No. of Contacs
Service Ratings
9-35
8-35
6 #22D
M
11-5
10-5
5 #20
I
11-98
10-98
6 #20
I
11-35
10-35
13 #22D
M
13-8
12-8
8 #20
I
13-98
12-98
10 #20
I
13-35
12-35
22 #22D
M
Series I, III & IV
Series II
No. of Contacs
Service Ratings
15-5
14-5
5 #16
II
15-18
14-18
18 #20
I
15-19
14-19
19 #20
I
15-35
14-35
37 #22D
M
-
16-99
21 #20,2 #16
I
17-8
16-8
8 #16
II
17-26
16-26
26 #20
I
17-35
16-35
55 #22D
M
Series I, III & IV
Series II
No. of Contacs
Service Ratings
19-32
18-32
32 #20
I
19-35
18-35
66 #22D
M
21-16
20-16
16 #16
II
21-35
20-35
79 #22D
M
21-41
20-41
41- #20
I
Series I, III & IV
Series II
No. of Contacs
Service Ratings
23-21
22-21
21 #16
II
23-35
22-35
100 #22D
M
23-53
22-53
53 #20
I
23-55
22-55
55 #20
I
Series I, III & IV
Series II
No. of Contacs
Service Ratings
25-29
24-29
29 #16
I
25-35
24-35
128 #22D
M
25-61
24-61
61 #20
I
Please consult factory for availability of layouts not shown.
Polarizign Positions
Series IV
MASTER KEY
Front face of receptacle shown. Polarizing keys are
external.
Key
Arrangements
N
A
XX
110˚
100˚
90˚
80˚
70˚
YY
250˚
260˚
270˚
280˚
290˚
XX
B
C
D
YY
See page 131 for Series I, II and III polarization.
Dimensions are shown in inches (millimeters).
Dimensions subject to change.
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