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.
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.
See Amphenol catalogs on-line at: www.amphenol-aerospace.com
Amphenol
®
JT/LJT
high reliability and high contact density
with maximum weight and space savings
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:
Amphenol
®
JT Connector
• 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
cm
3
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.
pheno
l
Am
•
RoHS Compliant Product Available -
S
H
Consult Amphenol Aerospace Operations.
Ro
U
E
/2
002
/
95
/
Amphenol
®
LJT Connector
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
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.
1
C
E
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.
Wall
Mounting
Receptacle
Wall
Mounting
Receptacle
Box
Mounting
Receptacle
Line
Receptacle
Straight
Plug
Jam
Nut
Receptacle
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.
Jam Nut
Receptacle
Straight
Plug
90° Plug
Solder
Mounting
Receptacle
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
N
2
O
4
resistance 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.
Lanyard
Release
Plug
Solder
Mounting
Receptacle
2
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