108
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
Maximum ratings
Electrical characteristics
Components Material Finish
Shells & backshells Aluminium alloy Nickel plating : electroless & flashing
Inserts
- Insulator Duroplastic -
- Wire guide Silicone -
Contacts See L.I.F. contacts See L.I.F. contacts
Contact retaining clip Copper alloy -
Locking device
- Mechanical parts Aluminium alloy Electroless Electrolytic Nickel plated
- Springs Stainless steel or Berylium copper -
N° Characteristics Symbol Maximum ratings Unit
min Max.
N° Characteristics Symbol Test Test Limits Unit
method condition min Max.
(1) From grounding screw of the backshell to the receptacle flange.
(These measurements have been performed at : Tamb = + 22 ± 3°C).
1 Working voltage (sea level) Ur--- 200 Vrms
2 Rating current Ir--- 5 A
3 Operating temperature range Top -55 +150 °C
Mating/Demating in mated status +15 +40 °C
4 Storage temperature range Tstg -65 +150 °C
5 Soldering temperature Tsol --- +260 °C
6 Connector life --- --- > 500 cycles (1)
1Insulation resistance Ri ESA/SCC 3401 para. 9.1.1.1 10 000 --- MΩ
para. 9.1.1.1
2Voltage proof - Leakage current IL
ESA/SCC 3401 800 Vrms --- 2 mA
para. 9.1.1.2
3Mated shell conductivity (1) RESA/SCC 3401 para. 9.1.1.4 --- 7 mΩ
para. 9.1.1.4
4Contact resistance Rc
ESA/SCC 3401 para. 9.1.1.3 --- 6 mΩ
para. 9.1.1.3
(1) 1 cycle = 1 mating/demating over 10 years
Connectors for
Astronaut Operations
MAXI-D Series
109
Coding system (see examples below)
NØ = no coding system
Different types of coding, according to the sizes of connectors, are available on request
Contact type
P: pin
S: socket
Contacts
C: short spills
-- : crimp contacts
Layout
Part Number / Ordering information
Coding system (for medium size)
Size of connector
L: large
M: medium
S: small
Type of component
R: receptacle
P: plug
8976 R M 072 C S xx
Family identification code
AB1 2345 67 8
A1 xx
A2 xx
A3 xx
A4 xx
A5 xx
A6 xx
A7 xx
A8 xx
Main coding
position Secondary coding position
Polarization
code
AB1 2345 67 8
B1 xx
B2 xx
B3 xx
B4 xx
B5 xx
B6 xx
B7 xx
B8 xx
Main coding
position Secondary coding position
Polarization
code
Connectors for
Astronaut Operations
MAXI-D Series
110
Range of component / Type of variants
Crimping, insertion & removal tools
Dimensions (in mm)
Component Max Mass (g) Max Mating force (N) Max Demating force (N)
Type Medium Large Medium Large Medium Large
Plug for crimp male contacts 60 90 50 100 45 90
Receptacle for crimp female contacts (*) 60 90 50 100 45 90
(*) Available with spill female contacts
Component Max Mass (g)
Type Medium Large
Backshell, straight outlet 45 64
Backshell, 45° outlet 49 70
Contact size Contact part number Crimping tools Positioner Insertion and removal plastic tools
# 22 Pin
Socket M22520/2-01 8976-700
M22520/2-07 M81969/14-01
Pin
Socket
Pin
Socket
Pin
Socket
Inner pin
Inner socket
Crimping sleeve
M22520/1-01
M22520/5-01
M22520/1-04
8976-720
8976-710
8976-730
M81969/14-10
M81969/14-03
M81969/14-04
# 20
# 16
# 12
# 12 coax
ABCDE
FGHJ L
68-0
-0,51 18-0
-0,11 52,5-0
-0,11 14,5-0
-0,11 17-0
-0,1
27,35-0
-0,11 520
-0,11 16-0
-0,11 2,16+0,05
+0 55,5 maxi
Plug (for medium size)
Connectors for
Astronaut Operations
MAXI-D Series
111
ABCDE
FGHJK
67,99+0,5
+0 20-0
-0,11 55,5-0
-0,11 18-0
-0,11 52-0
-0,11
16-0
-0,11 20,50
-0,11 3-0
-0,11 28-0
-0,11 8,2+0,9
+0
LØ MNØ R
4-0
-0,11 0,49+0,02
-0,05 62 3,1+0,2
Receptacle for spill contacts (for medium size)
AB*G K
Fa Fb J
55-0
-0,11 18-0
-0,11 52-0
-0,21 48,04+0,5
56,9+0,75
-0,75 74,5+1
-1 227 mm2+10
+0
Backshell (for medium size)
Layouts (from 8976)
See page 87
For crimp contacts :
same dimensions without K, L & Ø M.
Connectors for
Astronaut Operations
MAXI-D Series
112
External dimensions for medium connector front & Rear mounting
Panel cut-out for receptacle
Receptacle front mounting Receptacle rear mounting
EF Ø G r1JHMK
31 62 3,20+0
+0,10 3-0
-0,50 52,30+0,20
+0 16,30+0,20
+0 55,80+0,20
+0 18,30+0,20
+0
= 0,10 / x ⊕0,10 / x / y Front mounting Rear mounting
Straight outlet 45° outlet
BA BB BC AC BD
40,5-0
-0,31 94,80+0,70
-0,70 103,4+1,10
-1,10 86,45+1,15
-1,15 121+1,50
-1,50
AD AB ΔZ Max
104+1,50
-1,50 77,85+0,75
-0,75 17-0
-0,10 6,5
Straight outlet 45° outlet
BA BB BC AC BD
37,5-0
-0,20 91,85+0,65
-0,65
100,45+1,05
-1,05
83,50+1,10
-1,10 118+1,50
-1,50
AD AB ΔZ Max
101+1,50
-1,50 74,90+0,70
-0,70 17-0
-0,10 6,5
Connectors for
Astronaut Operations
MAXI-D Series
