Amphenol JT/LJT Subminiature
Cylindrical Connectors
12-090-17
Amphenol
®
Amphenol JT Connectors
MIL-DTL-38999 Series II Crimp and
MIL-C-27599 Series II Solder
Amphenol LJT Connectors
MIL-DTL-38999 Series I Crimp and
MIL-C-27599 Series I Solder
Table of Contents
Description Page
Amphenol® JT/LJT General Information ............................................................................... 1
JT/LJT - The subminiature cylindrical for every application ................................................ 2
JT/LJT - Specifications ......................................................................................................... 3
JT/LJT - Insert availability and identification; alternate positioning ..................................4, 5
JT/LJT - Insert availability and identification........................................................................ 6
JT/LJT - Insert arrangements........................................................................................ 7 – 11
JT - Crimp, JT00R (MS27472) wall mounting receptacle .................................................. 12
JT - Crimp, JTPQ00R (MS27497), wall mounting receptacle, back panel mounting ........ 13
JT - Crimp, JT01R, line receptacle ..................................................................................... 14
JT - Crimp, JT02R (MS27499), box mounting receptacle,
JT02R (MS27513) box mounting receptacle ................................................... 15
JT - Crimp, JTP02R (MS27508), box mounting recept., back panel mounting ................. 16
JT - Crimp, JT06R (MS27473), straight plug...................................................................... 17
JT - Crimp, JTG06R (MS27484), straight plug with grounding fingers .............................. 18
JT - Crimp, JT07R (MS27474), jam nut receptacle ............................................................ 19
JT - Crimp, JTL07R, jam nut receptacle, miniature jam nut mounting dimensions ........... 20
JT - Crimp, JT08R (MS27500), 90° plug ............................................................................ 21
JT - Hermetic, JT00 (MS27475), wall mounting receptacle ............................................... 22
JT - Hermetic, JT02 (MS27476), box mounting receptacle ............................................... 23
JT - Hermetic, JT07 (MS27477), jam nut receptacle.......................................................... 24
JT - Hermetic, JTI (MS27478), solder mounting receptacle .............................................. 25
JT - Accessories, plug protection cap ................................................................................ 26
JT - Accessories, receptacle protection cap ...................................................................... 27
JT - Accessories, strain relief (crimp type) ......................................................................... 28
LJT - Crimp, LJT00R (MS27466) wall mounting receptacle.............................................. 29
LJT - Crimp, LJTPQ00R (MS27656) wall mounting receptacle, back panel mounting .... 30
LJT - Crimp, LJT01R line receptacle.................................................................................. 31
LJT - Crimp, LJT02R (MS27496) box mounting receptacle .............................................. 32
LJT - Crimp, LJTP02R (MS27505) box mounting receptacle, back panel mounting ........ 32
LJT - Crimp, LJT06R (MS27467) straight plug .................................................................. 33
LJT - Crimp, LJT07R (MS27468) jam nut receptacle ........................................................ 34
LJT - Hermetic, LJT00 (MS27469) wall mounting receptacle ........................................... 35
LJT - Hermetic, LJT07 (MS27470) jam nut receptacle ...................................................... 36
LJT - Hermetic, LJTI (MS27471) solder mounting receptacle ........................................... 37
LJT - Fail Safe, 88/91-5388 (MS27661) lanyard release plug ..................................... 38, 39
LJT - Fail Safe, lanyard release plug how to order ...................................................... 40, 41
LJT - Accessories, plug protection cap .............................................................................. 42
LJT - Accessories, receptacle protection cap .................................................................... 43
LJT - Accessories, strain relief (solder type) ...................................................................... 44
JT/LJT - Crimp contacts, printed circuit board, wire wrap contacts (sockets) .................... 45
LJT - Printed circuit board, wire wrap contacts (sockets) ................................................... 46
JT/LJT - Printed circuit board, wire wrap contacts (pins) ................................................... 47
JT/LJT - Accessories, Universal “Header Assembly” for flex print or PCB mounting .. 48, 49
JT/LJT - Thermocouple contacts, plastic protection caps, sealing plugs ........................... 50
JT/LJT - Application tools ................................................................................................... 51
JT/LJT - Solder contact connectors .................................................................................... 52
JT/LJT - How to Order ......................................................................................................... 53
Specials - JT/LJT Connectors Types - Filter, Aquacon and 38999 for PCB attachment .... 54
Specials - JT/LJT Ground Plane Connectors and shielded contacts ................................ 55
Sales Office and Distributor Listing .................................................................................... 56
NOTE:
The connector products in this brochure were formerly known as Bendix® products. These products are now manufac-
tured and sold under the Amphenol® brand name. The name “Amphenol” will replace the name “Bendix” on products and
literature in the future.
See Amphenol catalogs on-line at: www.amphenol-aerospace.com
MS Number Page
MS20047............................... 39
MS20048............................... 38
MS27352............................... 26
MS27353............................... 27
MS27466............................... 29
MS27467............................... 33
MS27468............................... 34
MS27469............................... 35
MS27470............................... 36
MS27471............................... 37
MS27472............................... 12
MS27473............................... 17
MS27474............................... 19
MS27475............................... 22
MS27476............................... 23
MS27477............................... 24
MS27478............................... 25
MS27479............................... 12
MS27482............................... 22
MS27483............................... 24
MS27484............................... 18
MS27488 ..............................50
MS27496 ..............................32
MS27497 ..............................13
MS27499 ..............................15
MS27500 ..............................21
MS27501 ..............................42
MS27502 ..............................43
MS27503 ..............................25
MS27505 ..............................32
MS27506-2 ...........................28
MS27508 ..............................16
MS27510 ..............................26
MS27511 ..............................27
MS27513 ........................ 39-41
MS27656 ..............................30
Amphenol operates quality
systems that are certified to
ISO 9001: 2000 by third party
registrars.
1
Amphenol® JT/LJT
high reliability and high contact density
with maximum weight and space savings
Amphenol® JT Connector
Amphenol® LJT Connector
Amphenol® LJT and JT Series subminiature cylindrical
connectors are qualified to MIL-DTL-38999*, Series I and II
respectively. These connectors were developed to meet
the needs of the aerospace industries, and provided the
impetus for development of the MIL-C-38999 specifications,
which recently were superseded by MIL-DTL-38999. Meet-
ing or exceeding MIL-DTL-38999 requirements, Amphenol®
JT/LJT connectors feature:
• Lightweight, Space Saving Design
• Contact Protection - 100% scoop-proof LJT design
prevents bent pins and short circuits during mating
• Quick Positive Coupling - 3 point bayonet lock
system
• Mismating Eliminated - with 5 key/keyway design
• Error Proof Alternate Positioning - insured by
different key/keyway locations
• EMI Shielding - grounding fingers standard in LJT
Series; optional in JT Series
• Nine Shell Sizes and a Variety of Shell Styles
• Contact Options - size 8, 10, 12, 16, 20, 22M and 22D
Crimp, Solder, PCB, Wire wrap, Coax, Twinax, Triax,
Thermocouple, Fiber Optic and Filter
• Fixed Solder Contacts - per MIL-C-27599 (see page
52 and Amphenol Product Data Sheet 158)
• Hermetic - air leakage limited to 1 X 10-7 cm3 per
second optional
• “Breakaway” Lanyard Release Style - available in
LJT plugs. Provides quick disconnect of the connector
plug and receptacle with axial pull on the lanyard. See
pages 38-41.
• Inventory Support Commonality - uses standard
MIL-DTL-38999 contacts, insert arrangements and
application tools.
•RoHS Compliant Product Available -
Consult Amphenol Aerospace Operations.
Where proof of high reliability and lot control is required, MS ap-
proved equivalents to most proprietary JT and LJT connectors are
available.
* MIL-DTL-38999 Series I supersedes MIL-C-38999 Series I.
MIL-DTL-38999 Series II supersedes MIL-C-38999 Series II.
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For additional information on Amphenol JT/LJT connectors,
or for special application requirements, contact your local sales
office or:
Amphenol Corporation
Amphenol Aerospace
40 – 60 Delaware Avenue, Sidney, NY 13838-1395
Telephone: 607-563-5011 Fax: 607-563-5157
www.amphenol-aerospace.com
2
JT/LJT
the subminiature cylindrical
for every application
Components
Shell components are impact extruded or machined
bar stock aluminum. Standard plating on shell com-
ponents is cadmium over nickel. Many finishes are
optional (see “Specifications” page 3). Hermetic seal
receptacles are available in carbon steel or stain-
less steel shells. Dependable 5 key/keyway polar-
ization with bayonet lock coupling is incorporated to
aid and assure positive mating.
Insert material is a rigid dielectric with excellent elec-
trical characteristics, providing durable protection for
molded-in solder type contacts. Contrasting letter
or number designations are used on insert faces.
A fluorinated silicone interfacial seal wafer is fea-
tured on the mating face of “crimp type pin” inserts.
This assures complete electrical isolation of pins
when connector halves are mated. In addition, a
main joint gasket is installed in the receptacle for
moisture sealing between connector halves. Both
features are also available for hermetic receptacles.
Contacts
Maximum design flexibility is built into the JT/LJT
Series, with a minimum of 2 to a maximum of 128
circuits per connector in a wide variety of contact
arrangements. Contacts are available in sizes 8, 10,
12, 16, 20, 22, 22D and 22M with standard 50 mi-
cro inch minimum gold plating (100 micro inches
optional). All socket contacts are probe proof. Crimp
type rear removable contacts are featured in JT-R
and LJT-R connectors. Solder termination contacts
are also available, as well as PCB, wire wrap, ther-
mocouple, fiber optic, coaxial, triaxial and twinax
contact options.
Optional Features
High temperature capability of 392°F is available only
in JTS or LJTS crimp type connectors. High tem-
perature versions feature gold plated contacts, high
temperature shell plating, stainless steel coupling
nut spring, and epoxy inserts/fluorinated silicone
grommet combination. Standard temperature capa-
bility for both solder and crimp is 302°F.
The JTN or LJTN type connectors are available for
N2O4resistance provided they are mated, and un-
grommeted rear faces are suitably protected.
For complete listing and definition of connector types,
shell styles and service classes, see How to Order,
page 53. For information on Fail-Safe Lanyard Re-
lease style plugs see pages 38-41.
Wall
Mounting
Receptacle
Box
Mounting
Receptacle
Straight
Plug
Jam Nut
Receptacle
90° Plug
Solder
Mounting
Receptacle
Wall
Mounting
Receptacle
Line
Receptacle
Jam
Nut
Receptacle
Straight
Plug
Solder
Mounting
Receptacle
Lanyard
Release
Plug
3
JT/LJT
specifications
Crimp Well Data Solder Well Data
Contact Well Nominal Well Nominal
Size Diameter Well Depth Diameter Well Depth
22M .028 ±.001 .141 .029
22D .0345 ±.0010 .141
22 .0365 ±.0010 .141 .036 .094
20 .047 ±.001 .209 .044 .125
16 .067 ±.001 .209 .078 .141
12 .100 ±.002 .209 .116 .141
10 (Power) .137 ±.002 .355 NA NA
CONTACT RATING
* When tested using silver plated wire.
SERVICE RATING**
FINISH DATA
+.004
–.000
+.004
–.000
+.004
–.004
+.000
–.004
+.004
–.002
Suggested Operating Voltage
Service (Sea Level) Test Voltage Test Voltage Test Voltage Test Voltage
Rating AC (RMS) DC (Sea Level) 50,000 ft 70,000 ft 110,000 ft
M 400 500 1300 VRMS 550 VRMS 350 VRMS 200 VRMS
N 300 450 1000 VRMS 400 VRMS 260 VRMS 200 VRMS
I 600 850 1800 VRMS 600 VRMS 400 VRMS 200 VRMS
II 900 1250 2300 VRMS 800 VRMS 500 VRMS 200 VRMS
** Please note that the establishment of electrical safety factors is left entirely in the designer’s hands, since he is in the best position to know what peak voltage, switching
surges, transients, etc. can be expected in a particular circuit.
Suffix
Finish Military Proprietary
Cadmium Plated Nickel Base MS (A) –
Anodic Coating (Alumilite) MS (C) (005)
Chromate Treated (Iridite 14-2) (011)
Olive Drab Cadmium Plate Nickel Base MS (B) (014)
Electroless Nickel MS (F) (023)
Indicated Finish Standard for
JT Types Listed Below
JT/JTG/JTL/JTP
JTS/JTPS/JTLS
JTN/JTPN/JTLN
Indicated Finish Standard for
LJT Types Listed Below
LJT/LJTP
LJTPS/LJTS
LJTN/LJTPN
Aluminum Shell Components Non-Hermetic
Indicated Finish Standard for
JT Types Listed Below
JT( )H/JT( )Y
JTL( )H/JTL( )Y
JTS( )Y
JTLS( )Y
Indicated Finish Standard for
LJT Types Listed Below
LJT( )Y/LJT( )H
LJTS( )Y
Hermetic Connectors
22M 3 2 45 20 60
22D 5 3 73 85
22 5 3 73 20 85
20 7.5 5 55 20 60
16 13 10 49 20 85
12 23 17 42 20 85
10 (Power) 33 NA 33 NA NA
Maximum
Test Current Millivolt Drop
Maximum
Contact Solder & Millivolt Drop
Size Crimp Hermetic Crimp* Solder* Hermetic*
Suffix
Material/Finish Military Proprietary
Carbon Steel Shell
Tin Plated Shell and Contacts
Carbon Steel Shell MS (D)
Tin Plated Shell and Gold Plated Contacts
Stainless Steel Shell MS (E) (162)
Gold Plated Contacts
4
ROTATION
LETTERS
NORMAL
BADC
AB
10˚ JT REF
RELATIVE POSSIBLE POSITION
OF ROTATED MASTER KEYWAY
(front face of receptacle shown)
JT
8-2
8-3
8-6
8-35
8-44
8-97
8-98
10-4
10-5
10-13
10-35
10-98
10-99
12-3
12-4
12-8
12-22
12-35
12-98
14-4
14-5
14-15
14-18
14-19
14-35
14-37
14-68
14-97
Class Class
Solder Crimp H Y*
P
XN/APP
X
XXPP
XXPP
X
X
XPP
XPP
XPP
X
X
SXPP
XXPP
X P**
3
X2
XXPP
XX
S
XXPP
XXPP
XPP
XPP
XXPP
XXPP
XPP
P
XXPP
P
XXPP
XXPP
XXPP
XXPP
XPP
XXPP
XPP
XPP
XXPP
XXPP
2
2
XXPP
XX
XXPP
XXPP
XXPP
XXPP
XX
X
XPP
XPP
XXPP
XXPP
2
X3
2PP
XXPP
LJT
9-3
9-6
9-7
9-22
9-35
9-44
9-98
11-2★
11-4
11-5
11-6
11-13
11-35
11-98
11-99
13-3
13-4★
13-8
13-22
13-35
13-98
15-4
15-5★
15-15
15-18
15-19
15-35
15-37
15-68
15-97
Total Contact Size
Service Con- 8
Rating tacts 22D 22M 22 20 16 12 (Coax)
M2 2
M3 3
M6 6
M7 7
I2 2
M66
M4 4
M4 2 2
I3 3
I2 2
I4 4
I5 5
I6 6
M13 13
M1313
I6 6
I7 7
II 3 3
I4 4
I8 8
M22 22
M2222
I10 10
I4 4
II 5 5
I15 141
I18 18
I19 19
M3737
M37 37
18 8
I12 84
JT/LJT
insert availability and identification,
alternate positioning
(P) Pin inserts only (consult Amphenol, Sidney, NY for
socket availability)
(2) Not tooled for RP or 02RE
(3) Pin inserts only, not tooled for RP or 02RE (consult
Amphenol, Sidney, NY for availability)
* Same as H with interfacial seal
** Tooled with special terminal only (consult Amphenol,
Sidney, NY for availability of standard terminal)
★Ground plane proprietary option available. See page
55 for further information on ground plane connectors.
A plug with a given rotation letter will mate with a receptacle
with the same rotation letter. The AB angle for a given connec-
tor is the same whether it contains pins or sockets. Only the
master key/keyway rotates in the shell, and the insert al-
ways remains in the same position relative to the minor keys.
AB angles shown are viewed from the front face of the
connector, a receptacle is shown below. The angles for the
plug are exactly the same except the direction of rotation is
opposite of that shown for the receptacle.
Shell
Size Normal A B C D
8100° 82° – – 118°
10 100° 86° 72° 128° 114°
12 100° 80° 68° 132° 120°
14 100° 79° 66° 134° 121°
16 100° 82° 70° 130° 118°
18 100° 82° 70° 130° 118°
20 100° 82° 70° 130° 118°
22 100° 85° 74° 126° 115°
24 100° 85° 74° 126° 115°
AB ANGLE OF ROTATION (Degrees)
JT MASTER KEY/KEYWAY ROTATION
Hermetics
5
ROTATION
LETTERS
NORMAL
BADC
AB
5˚ LJT REF
RELATIVE POSSIBLE POSITION
OF ROTATED MASTER KEYWAY
(front face of receptacle shown)
Service Con- 8 8
Rating tacts 22D 22M 22 20 16 12 (Coax)(Twinax)
M3938 1
I6 6
II 8 8
I13 13
Coax 4 2
M2422 2
I26 26
M5555
M42 42
M55 55
I23 212
II 11 11
M1814 4
I28 262
I30 291
I32 32
M6666
M53 53
M66 66
M67 67
I18 18
I9 9
M79 79
M65 65
I11 11
II 16 16
I24 24
I25 25
I27 27
M7979
I39 372
I41 41
JT
16-6
16-8
16-13
16-26
16-35
16-42
16-55
16-99
18-11
18-28
18-30
18-32
18-35
18-53
18-66
18-68
18-96
20-1
20-2
20-11
20-16
20-35
20-39
20-41
Class Class
Solder Crimp H Y*
X
XPP
XPP
XXPP
XXPP
2
2
2
XXPP
XXPP
XPP
XXPP
X
P
XXPP
XXP
XXPP
XX
XXPP
XXPP
2
XXPP
XP
XX
XP
XXPP
XXPP
XPP
XPP
XX
P
XXPP
XPP
X3
2
3
2
XP
X
X
2
3
2
XXPP
XXPP
X
X
X
X
X
XXPP
XX
XXPP
XX
LJT
17-2
17-6
17-8★
17-13
17-22
17-25
17-26
17-35
17-42
17-55
17-99
19-11★
19-18
19-28
19-30
19-32
19-35
19-53
19-66
19-67
19-68
21-1
21-2
21-11★
21-16★
21-24
21-25
21-27
21-35
21-39
21-41
JT/LJT
insert availability and identification,
alternate positioning
(P) Pin inserts only (consult Amphenol, Sidney, NY for
socket availability)
(2) Not tooled for RP or 02RE
(3) Pin inserts only, not tooled for RP or 02RE (consult
Amphenol, Sidney, NY for availability)
* Same as H with interfacial seal
★Ground plane proprietary option available. See page
55 for further information on ground plane connectors.
A plug with a given rotation letter will mate with a receptacle
with the same rotation letter. The AB angle for a given connec-
tor is the same whether it contains pins or sockets. Only the
master key/keyway rotates in the shell, and the insert al-
ways remains in the same position relative to the minor keys.
AB angles shown are viewed from the front face of the
connector, a receptacle is shown below. The angles for the
plug are exactly the same except the direction of rotation is
opposite of that shown for the receptacle.
Shell
Size Normal A B C D
995° 77° – – 113°
11 95° 81° 67° 123° 109°
13 95° 75° 63° 127° 115°
15 95° 74° 61° 129° 116°
17 95° 77° 65° 125° 113°
19 95° 77° 65° 125° 113°
21 95° 77° 65° 125° 113°
23 95° 80° 69° 121° 110°
25 95° 80° 69° 121° 110°
AB ANGLE OF ROTATION (Degrees)
LJT MASTER KEY/KEYWAY ROTATION
Hermetics
2
Coax
Contact Size
Total
6
JT
22-1 X
22-2 XXPP
22-14 2
22-21 XXPP
22-32 X X P
22-35 X
22-53 P
22-55 XXPP
24-1 X
24-2 X
24-4 X P P
24-19 2
24-24 X P P
24-29 X
24-35 X
24-37 2
24-43 3
24-61 XXPP
Class ClassService Con- 8 8†† 10 12
Solder Crimp H Y* Rating tacts 22D 22M 22 20 16 12 (Coax) (Twinax) (Power) Coax
N4
II 19 17
M 100 100
M85 85
M6 6
I14 14
II 21 21
I32 32
I34 34
M 100 100
I53 53
I55 55
II 16 16
II 11 11
M 128 128
M 100 100
I56 488
M9997 2
N11 2 9
I19 19
N30 1013 3 4
I24 1212
I29 29
M 128 128
I37 37
I43 2320
I46 404 2†
I61 61
JT/LJT
insert availability and identification
(P) Pin inserts only (consult Amphenol, Sidney, NY for socket availability)
(2) Not tooled for RP or 02RE
(3) Pin inserts only, not tooled for RP or 02RE (consult Amphenol, Sidney, NY
for availability)
* Same as H with interfacial seal
** Two size 16 contacts dedicated to fiber optics. Consult Amphenol, Sidney,
NY or catalog section 12-352 for fiber optic contact information.
† For RG180/U and RG195/U cables only (consult Amphenol, Sidney, NY
for other cable applications)
†† Size 8 Coax and Twinax are interchangeable
(4) MS connector 21-75 is supplied with four size 8 twinax contacts.
Proprietary connector 21-75 is supplied with four size 8 coax contacts.
(5) MS connector 21-79 has provision for two size 8 coax contacts. Coax
contacts are not supplied unless specified by customer.
★Ground plane proprietary option available. See page 55 for further
information on ground plane connectors.
(See Note 4)
(See Note 5)
Hermetics Contact Size
Total
LJT
21-75★2
21-79 2
23-1 X
23-2 XXPP
23-6★P
23-14 2
23-21★XXPP
23-32 X P
23-34 X
23-35 X
23-53 X X P
23-55 3
23-97 X
23-99 X
25-1 X
25-2 X
25-4 X
25-7 2
25-11 2
25-19★2
25-20 2
25-24★X
25-29★XX
25-35 X
25-37★2
25-43 X 2 P P
25-46 2
25-61 XXPP
7
JT/LJT
insert arrangements
Insert Arrangement (JT) 8-2 8-3 8-6 8-35 8-44 8-97 8-98
Insert Arrangement (LJT) 9-3 9-6 9-7 9-22 9-35 9-44 9-98
Service Rating MMMM I MMM I
Number of Contacts 2367264223
Contact Size 20 20 22M 22M 20 22D 22 22M 20 20
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
Insert Arrangement (JT) 10-4 10-5 10-13 10-35 10-98 10-99
Insert Arrangement (LJT) 11-2 11-4 11-5 11-6 11-13 11-35 11-98 11-99
Service Rating I I I I M M I I
Number of Contacts 2 4 5 6 13 13 6 7
Contact Size 16 20 20 20 22M 22D 20 20
Insert Arrangement (JT) 12-3 12-4 12-8 12-22 12-35 12-98 14-4 14-5
Insert Arrangement (LJT) 13-3 13-4 13-8 13-22 13-35 13-98 15-4 15-5
Service Rating II I I M M I I II
Number of Contacts 3 4 8 22 22 10 4 5
Contact Size 16 16 20 22M 22D 20 12 16
Insert Arrangement (JT) 14-15 14-18 14-19 14-35 14-37 14-68 14-97
Insert Arrangement (LJT) 15-15 15-18 15-19 15-35 15-37 15-68 15-97
Service Rating I I I M M I I
Number of Contacts 14 1 18 19 37 37 8 8 4
Contact Size 20 16 20 20 22D 22M 16 20 16
A
B
A
B
C
1
2
3
456
1
2
3
4
5
67
A
B
51
6
4
3
2
1
2
3
4
A
B
C
D
CA
B
AB
A
BC
D
A
B
C
D
E
F
12
3
4
5
6
7
8
9
10
11
12
13
12
3
4
5
6
7
8
9
10
11
1213
A
B
C
D
EF
A
B
C
D
E
F
G
A
B
C
A
B
C
D
A
B
C
D
E
F
G
H
22
1
20
1
21 22
AB
C
D
E
F
G
H
JK
AB
CD
E
A
BC
D
AB
C
D
E
F
G
H
J
KL
M
N
P
R
A
B
C
D
E
F
G
H
J
K
L
MN
P
R
S
TU
AB
C
D
E
FG
H
J
K
L
M
NP
R
S
T
UV
1
21
31
AB
C
D
E
F
G
H
JK
L
M
1
11
21
31
A
B
C
D
E
F
GH
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
front face of pin inserts illustrated
A
B
C
D
E
8
JT/LJT
insert arrangements
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
Insert Arrangement (JT) 16-6 16-8 16-13 16-26
Insert Arrangement (LJT) 17-2 17-6 17-8 17-13 17-22 17-25 17-26
Service Rating M I II I Coax M I
Number of Contacts 38 1 6 8 13 2 2 22 2 26
Contact Size 22D 8 Twinax 12 16 16 12 Coax 8 Coax 22D 8 Coax 20
Insert Arrangement (JT) 16-35 16-42 16-55 16-99 18-11
Insert Arrangement (LJT) 17-35 17-42 17-55 17-99 19-11 19-18
Service Rating M M M I II M
Number of Contacts 55 42 55 21 2 11 14 4
Contact Size 22D 22 22M 20 16 16 22D 8 Twinax
Insert Arrangement (JT) 18-28 18-30 18-32 18-35 18-53 18-66
Insert Arrangement (LJT) 19-28 19-30 19-32 19-35 19-53 19-66
Service Rating I I I M M M
Number of Contacts 26 2 29 1 32 66 53 66
Contact Size 20 16 20 16 20 22D 22 22M
Insert Arrangement (JT) 18-68 18-96 20-1 20-2
Insert Arrangement (LJT) 19-67 19-68 21-1 21-2
Service Rating M I I M M
Number of Contacts 67 18 9 79 65
Contact Size 22M 16 12 22M 22
1
6
11
17
30
A
B
C
D
E
F
A
B
C
DE
F
G
H
A
B
C
D
E
F
G
H
J
K
L
NM
A
D
C
B
12
3
4
5
6
7
8
9
10
11 12 13 14
15 16
17
18
19
20
21
22 23
24
ABC
D
E
F
G
H
J
K
L
M
N
P
RSTU
V
W
X
Y
Z
ab
c
1
3
4
9
10
16
17
24
25
31
32
39
40
47
46
52
53
55
1
21
42
41
31
11
1
3
4
9
10
16
17
24 31
25
32
39
40
46
47
52
53
55
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
STU
V
W
X
Y
Z
A
B
C
D
E
F
G
H
J
K
L
A
B
C
DE
F
G
H
J
K
L
M
N
P
R
S
T
U
AB
N
C
D
E
F
G
H
J
K
L
M
P
R
STU
V
W
X
Y
Z
a
b
c
d
e
AB
C
D
E
F
G
H
J
K
L
M
N
P
RS
TU
V
W
X
Y
Z
a
b
cd
e
gf
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
j
1
2
3
4
9
10
16
17
24
25
33
34
42
43
50
51
57
58
63
64
66
1
41
51
52
53
31
11
21
1
2
3
4
9
10
24
16
17 25
33
34
42
43
50
51
57
58
63
64
66
1
3
4
9
10
16
17
24
25
34
35
43
44
51
52
58
59
64
65
67
A
BL
CK
DJ
EH
FG R
U
M
TN
SP
A
BH
C
D
F
E
GJ
1
21
31
41
51
61
71
79
11
1
31
21
11
41
51
61
65
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
9
JT/LJT
insert arrangements
Insert Arrangement (JT) 20-11 20-16
Insert Arrangement (LJT) 21-11 21-16 21-24 21-25 21-27
Service Rating I II I I I
Number of Contacts 11 16 24 25 27
Contact Size 12 16 20 20 20
Insert Arrangement (JT) 20-35 20-39 20-41
Insert Arrangement (LJT) 21-35 21-39 21-41 21-75 21-79
Service Rating M I I N II
Number of Contacts 79 37 2 41 4 17
Contact Size 22D 20 16 20 (See Note) 22D
Insert Arrangement (JT) 22-1 22-2 22-14
Insert Arrangement (LJT) 23-1 23-2 23-6 23-14
Service Rating M M M I
Number of Contacts 100 85 6 14
Contact Size 22M 22 8 Twinax 12
Note: MS connector 21-75 is supplied with four size 8 twinax contacts.
Proprietary connector 21-75 is supplied with four size 8 coax contacts.
MS connector 21-79 has provision for two size 8 coax contacts.
Coax contacts are not supplied unless specified by customer.
(See Note)
A
B
C
D
E
F
G
H
J
K
L
A
B
C
D
E
F
G
H
J
K
L
M
N
PR
S
A
B
C
D
E
F
G
H
J
K
LM
N
P
R
S
T
U
V
WX
Y
Z
a
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
AB
C
D
E
F
G
HJ
K
L
M
N
P
RS
T
U
V
W
X
Y
Z
a
b
c
d
1
11
21
31
41
51
61 71
79
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
T
UVW
XYZ
a
b
c
d
e
f
g
h
i
j
k
m
n
p
q
r
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
VW
XY
Z
a
b
c
d
e
f
g
h
i
j
k
m
n
p
q
r
s
t
A
BC
D
AB
C
D
E
F
G
H
J
K
L
M
N
P
RST
UV
1
2
3
4
5
6
7
8
15
16
24
25
34
35
45
46
55
56
66
67
76
77
85
86
93
94
95
96
97
98
99
100
1
4
5
11
12
19
20
28
29
38
39
47
48
57
58
66
67
74
75
81
82
85
A
B
C
D
EF
A
BK
CJ LP
MN
DH
EG
F
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
10
JT/LJT
insert arrangements
Insert Arrangement (JT) 22-21 22-32 22-35
Insert Arrangement (LJT) 23-21 23-32 23-34 23-35
Service Rating II I I M
Number of Contacts 21 32 34 100
Contact Size 16 20 20 22D
Insert Arrangement (JT) 22-53 22-55
Insert Arrangement (LJT) 23-53 23-55 23-97 23-99
Service Rating I I II II
Number of Contacts 53 55 16 11
Contact Size 20 20 16 16
Insert Arrangement (JT) 24-1 24-2 24-4
Insert Arrangement (LJT) 25-1 25-2 25-4
Service Rating M M I
Number of Contacts 128 100 48 8
Contact Size 22M 22 20 16
A
B
C
D
E
F
G
H
J
K
L
MP
R
S
N
T
U
V
W
X
AB
C
D
E
F
G
H
J
K
L
MNPR
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
j
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
STU
V
W
X
Y
Z
a
b
c
def
g
h
j
kl
1
2
34
56
7
8
15
16
24
25
34
35
45
46
55
56
66
67
76
77
85
86
93
94
9596
9798
99
100
AB
C
D
E
F
G
H
J
K
L
M
N
P
RSTUVW
X
Y
Z
a
b
c
d
e
f
g
h
kmnpq
r
s
t
AB
u
v
w
x
y
zAB
CC
DD
EE
FF
GG HH
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
TUVWXY
Z
a
b
c
d
e
f
g
h
i
j
k
mnpqr
s
t
v
w
x
y
z
AA BB CC
u
DD
EE
FF
GG HH
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
A
B
C
D
E
F
G
HJ
K
L
1
7
8
14
24
25
48
58
59
70
71
81
94
104
105
114
115
121
125
35
15
1
2
3
19 40 51
73
92
99
100
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Za
bc
d
e
f
g
h
k
m
n
p
q
r
t
u
vw
x
y
z
sJJ
KK
LL
AA
BBCC
DD
EE
FF
GG
HH
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
11
JT/LJT
insert arrangements
Insert Arrangement (JT) 24-19
Insert Arrangement (LJT) 25-7 25-11 25-19 25-20
Service Rating M N I N
Number of Contacts 97 2 2 9 19 10 13 3 4
Contact Size 22D 8 Twinax 20 10 12 20 16 8 Twinax 12 Coax
(Locations U and Y - Dedicated
to Fiber Optics)
Insert Arrangement (JT) 24-24 24-29 24-35 24-37
Insert Arrangement (LJT) 25-24 25-29 25-35 25-37
Service Rating I I M I
Number of Contacts 12 12 29 128 37
Contact Size 16 12 16 22D 16
Insert Arrangement (JT) 24-43 24-61
Insert Arrangement (LJT) 25-43 25-46 25-61
Service Rating I I I
Number of Contacts 23 20 40 4 2 61
Contact Size 20 16 20 16 8 Coax† 20
† Coax contacts for RG180 or RG195 cable.
1
6
7
15
16
18
19
21
22
24
26
28
29
32
33
41
42
46
53
59
60
64
67
68
72
74
76
78
79
81
82
84
85
93
94
99
25 75
A
B
C
D
E
F
G
HJ
KL
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
1
2
3
4
5
6
7
A
B
C
D
E
F
G
H
J
K
L
M
N
P
RS
T
U
V
W
X
YZ
a
AB
C
D
E
F
G
H
J
K
L
M
N
P
RST
U
V
W
X
Y
Z
a
bc
d
e
f
AB
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
k
m
n
p
q
r
ABC
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
XYZ
a
b
c
d
e
f
g
h
k
m
np
q
r
s
tu
v
w
x
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
k
m
n
p
q
r
s
t
u
v
w
x
y
z
AA