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? ). 1 working voltage (sea level) u r --- 200 vrms 2 rating current i r --- 5 a 3 operating temperature range t op -55 +150 ? mating/demating in mated status +15 +40 ? 4 storage temperature range t stg -65 +150 ? 5 soldering temperature t sol --- +260 ? 6 connector life --- --- > 500 cycles (1) 1 insulation resistance ri esa/scc 3401 para. 9.1.1.1 10 000 --- m para. 9.1.1.1 2 voltage proof - leakage current i l esa/scc 3401 800 vrms --- 2 ma para. 9.1.1.2 3 mated shell conductivity (1) r esa/scc 3401 para. 9.1.1.4 --- 7 m para. 9.1.1.4 4 contact resistance r c esa/scc 3401 para. 9.1.1.3 --- 6 m 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) n = 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 2 345 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 2 345 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 f gh j 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 52 0 -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 20,5 0 -0,11 3 -0 -0,11 28 -0 -0,11 8,2 +0,9 +0 l mn 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 mm 2+10 +0 backshell (for medium size) layouts (from 8976) see page 87 for crimp contacts : same dimensions without k, l & 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 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 z 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 z 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
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