MAXI-D Series
Connectors for
Astronaut Operations
In the frame of Space Station Alpha program, SOURIAU has developed and qualified a series
of Astronaut operable high reliability rectangular connectors which are suitable for both IVA
& EVA activities. This hardware is used on the COF (Colombus Orbital Facility) module which
is part of the European contribution to the Space Station. These connectors feature :
• Low Insertion Force contacts
• High density of contacts (72 # 22)
• Scoop proof design
• High durability (5000 mating/demating operations)
• High EMI shielding efficiency
• Associated dismountable EMI backshells
• Easy inspection, maintenance or repair after wiring.
Characteristics
Materials and finishes
Components
Shells & backshells
Inserts
- Insulator
- Wire guide
Contacts
Contact retaining clip
Locking device
- Mechanical parts
- Springs
Material
Aluminium alloy
Duroplastic
Silicone
See L.I.F. contacts
Copper alloy
Aluminium alloy
Stainless steel or Berylium copper
Finish
Nickel plating : electroless & flashing
-
-
See L.I.F. contacts
-
Electroless Electrolytic Nickel plated
-
Maximum ratings
N°
1
2
3
4
5
6
Characteristics
Working voltage (sea level)
Rating current
Operating temperature range
Mating/Demating in mated status
Storage temperature range
Soldering temperature
Connector life
Symbol
U
r
I
r
T
op
T
stg
T
sol
---
Maximum ratings
min
Max.
---
---
-55
+15
-65
---
---
200
5
+150
+40
+150
+260
> 500
Unit
Vrms
A
°C
°C
°C
°C
cycles (1)
(1) 1 cycle = 1 mating/demating over 10 years
Electrical characteristics
N°
1
2
3
4
Characteristics
Insulation resistance
Voltage proof - Leakage current
Mated shell conductivity
(1)
Contact resistance
Symbol
Ri
I
L
R
R
c
Test
method
Test
condition
Limits
min
10 000
---
---
---
Max.
---
2
7
6
Unit
MW
mA
mW
mW
ESA/SCC 3401
para. 9.1.1.1 para. 9.1.1.1
ESA/SCC 3401
800 Vrms
para. 9.1.1.2
ESA/SCC 3401
para. 9.1.1.4 para. 9.1.1.4
ESA/SCC 3401
para. 9.1.1.3 para. 9.1.1.3
(1) From grounding screw of the backshell to the receptacle flange.
(These measurements have been performed at :
Tamb = + 22 ± 3°C).
108
MAXI-D Series
Connectors for
Astronaut Operations
Part Number / Ordering information
Family identification code
Type of component
R
: receptacle
P
: plug
Size of connector
L
: large
M
: medium
S
: small
Layout
Contacts
C
: short spills
--
: crimp contacts
Contact type
P
: pin
S
: socket
Coding system
(see examples below)
NØ
= no coding system
Different types of coding, according to the sizes of connectors, are available on request
8976
R
M
072
C
S
xx
Coding system (for medium size)
Polarization
code
Main coding
position
Secondary coding position
A
A1
A2
A3
A4
A5
A6
A7
A8
x
x
x
x
x
x
x
x
B
1
x
2
x
3
4
5
6
7
8
x
x
x
x
x
x
Polarization
code
Main coding
position
Secondary coding position
A
B1
B2
B3
B4
B5
B6
B7
B8
B
x
x
x
x
x
x
x
x
1
x
2
x
3
4
5
6
7
8
x
x
x
x
x
x
109
MAXI-D Series
Connectors for
Astronaut Operations
Range of component / Type of variants
Component
Type
Plug for crimp male contacts
Receptacle for crimp female contacts (*)
(*) Available with spill female contacts
Max Mass (g)
Medium
60
60
Large
90
90
Max Mating force (N)
Medium
50
50
Large
100
100
Max Demating force (N)
Medium
45
45
Large
90
90
Component
Type
Backshell, straight outlet
Backshell, 45° outlet
Max Mass (g)
Medium
45
49
Large
64
70
Crimping, insertion & removal tools
Contact size
# 22
# 20
# 16
# 12
Contact part number
Pin
Socket
Pin
Socket
Pin
Socket
Pin
Socket
Inner pin
Inner socket
Crimping sleeve
8976-720
8976-710
8976-730
M81969/14-04
M22520/1-01
M22520/1-04
Crimping tools
M22520/2-01
Positioner
8976-700
M22520/2-07
Insertion and removal plastic tools
M81969/14-01
M81969/14-10
M81969/14-03
# 12 coax
M22520/5-01
Dimensions (in mm)
Plug (for medium size)
A
68
-0,51
-0
B
18
-0,11
G
-0
-0
C
52,5
-0,11
H
16
-0,11
-0
-0
D
14,5
-0,11
J
2,16
+0
+0,05
-0
E
17
-0,1
L
55,5
maxi
-0
F
27,35
-0,11
52
-0,11
0
110
Real-time operating system RTOS
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