8LT Series
MIL-DTL-38999 Series I
8LT Series
Presentation
High contact density connectors with high reliability
This 8LT product family is qualified in accordance to the MIL-DTL-38999 series I.
Originally designed to meet the high performance needs of the aerospace industries & military applications,
it is also now used in varied applications needing extremely reliable interconnections with high density contact
arrangements in a miniature circular shell.
Benefit to the customer
• Weight and Space Saving
• Quick Mating - 3 point bayonet lock system
• Mismating, error proof positioning - keyway polarization (5 positions)
• High choice of Insert arrangements (customization possible, please consult us)
• Range extension available or on demand (Rack Panel, Potted, Hermetics, Low Profile, Filters, etc..), please
consult us
• Versatility thanks to our inserts as for the series III (except for 8LT type 2) with full range of crimp contacts
interchangeable
• Gold plated crimp or spill contacts are rear removable and retained in the insulator by a metal clip.
• RoHS version available (cadmium free)
3
8LT Series
Contents
• Presentation
..........................................................................................................................................................
• Technical features & benefits
........................................................................................................................
• Cross reference list
Connectors ................................................................................................................................................
Backshells ...................................................................................................................................................
Caps .............................................................................................................................................................
Contacts ......................................................................................................................................................
Filler plug ....................................................................................................................................................
Insertion & extraction tools ...................................................................................................................
• Mated connectors with backshells
..............................................................................................................
• Plug or receptacle backshell assembly overall length
........................................................................
• Mated connectors dimensions
......................................................................................................................
• Contact layouts
....................................................................................................................................................
• Contact layouts (matrix)
....................................................................................................................................
• Part numbers
Souriau connector ...................................................................................................................................
MIL-DTL-38999 connector ...................................................................................................................
HE 308 connector ..................................................................................................................................
• Dimensions
............................................................................................................................................................
• Rack & panel
Souriau connector part numbers ........................................................................................................
HE 308 connector part numbers .......................................................................................................
Features & benefits ..................................................................................................................................
Dimensions ................................................................................................................................................
Panel cut .....................................................................................................................................................
• Contacts
Crimp contacts .........................................................................................................................................
Reductors ...................................................................................................................................................
Boots ............................................................................................................................................................
PC tail contacts .........................................................................................................................................
Wire wrap contacts ..................................................................................................................................
Solder cup ..................................................................................................................................................
Quadrax #8 contacts ..............................................................................................................................
Thermocouple contacts .........................................................................................................................
• Orientations
...........................................................................................................................................................
• Accessories
Protective caps .........................................................................................................................................
Dummy receptacle ..................................................................................................................................
Panel gasket ..............................................................................................................................................
• Tooling
.....................................................................................................................................................................
• Wiring instructions
..............................................................................................................................................
• Bakshells
.................................................................................................................................................................
• Cost effective & light hermetic / Resin sealed
.......................................................................................
• Coordinates for PC tail terminations
...........................................................................................................
03
05
06
06
07
07
07
07
08
10
1
1
1
4
18
20
21
22
23
28
28
29
30
31
32
34
34
34
35
35
35
36
37
38
39
40
40
42
44
46
48
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8LT Series
Description
• High contact density
• Bayonet coupling
• Contact protection : 100% Scoop proof
• Shell size from 9 to 25
• Accessories available (protective caps,
backshells, etc… )
• RFI - EMI shielding and shell to shell
continuity
• Hermetic
• Alluminium alloy, protection by cadmium,
nickel, green zinc cobalt or black zinc
nickel plating
Applications
• Civil and Military Aerospace
• Marine Equipments
• Communications Equipements
• Medical Instrumentation
• Ballistic Missiles & Weapon Systems
• Armored Carriers & Tanks
• Test Equipments
• Chock: 300 g during 3 ms and as per
MIL S 901 grade A
• Vibration: . Sine 10 to 2000 Hz - 30 g
. Random 100 à 300 Hz - 5 g²/Hz
• Contact retention (min force in N):
. Size 22D: 44 N
. Size 1 1 1 N
2: 1
. Size 20: 67 N
. Size 8: 1 1 N
1
. Size 16: 1 1 N
1
. Size 4: 200 N
• Shielding: 90 db at 100 MHz, 50 db at
10 000 MHz
• Electrical continuity between contact and
shell for specification 284 & 384: 10 mΩ
max
Climatic
• Temperature range:
. olive green cadmium plating (B)
- 65°C +1
75°C
. nickel plating (F)
- 65°C +200°C
. green zinc cobalt plating (Z)
- 65°C +200°C
. black zinc nickel plating (L)
- 65°C +200°C
• Sealing: mated connectors
Differential pressure 2 bars:
leakage
≤
16 cm
3
/h
• Salt spray as per:
. MIL STD 1
344 method 1001 :
- 500 hours (versions B, L and Z)
- 48 hours (version F)
. NFC 93422 :
- 48 hours (version F)
• Resistance to fluids
. As per MIL DTL 38999, hydraulic fluids,
solvants
. Specification 022 for fuel immersion
(please consult us)
Electrical
• Test voltage (Vrms)
Service
M
N
I
II
sea level
1 300
1 000
1 800
2 300
at 21 000 m
800
600
1 000
1 000
Technical features
Mechanical
• Shell: aluminum alloy
• Plating:
. olive green cadmium (B)
. nickel (F)
. green zinc cobalt (Z)
. black zinc nickel (L)
• Insulation resistance:
≥
5 000 MW (at 500
Vcc)
• Contact resistance:
resistance of wire included in measurement
. size 22D: 1
4.6 mΩ
. size 1 3.5 mΩ
2:
. size 20: 7.3 mΩ
. size 8: 3 mΩ
. size 16: 3.8 mΩ
. size 4: 2 mΩ
• Contact rating:
. size 22D: 5 A
. size 20: 7.5 A
. size 16: 1 A
3
. size 1 23 A
2:
. size 8: 45 A
. size 4: 80 A
• Insulator: thermoplastic or metallic version
available for specification 284 & 384
• Grommet or seal: liquid silicone rubber or
fluorocarbone elastomer for specification 022
• Contact: copper alloy
• Plating contact: gold over nickel
• Endurance: 500 mating / unmating
operations
• Shell continuity: . olive green plating: 2.5 mΩ
. nickel plating: 1 mΩ
. green zinc cobalt: 2.5 mΩ
. black zinc nickel: 2.5 mΩ
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