catalog 1308638 dimensions are in inches and dimensions are shown for usa: 1-800-522-6752 south america: 55-11-3611-1514 revised 8-05 millimeters unless otherwise reference purposes only. canada: 1-905-470-4425 hong kong: 852-2735-1628 specified. v alues in brackets specifications subject mexico: 01-800-733-8926 japan: 81-44-844-8013 www.tycoelectronics.com are metric equivalents. to change. c. america: 52-55-5-729-0425 uk: 44-141-810-8967 rectangular connectors 39 r e c t a n g u l a r c o n n e c t o r s 2 mce series plastic shell edgeboard connectors plastic shell edge board connectors designed for commercial applications requiring frequent disconnect and c onnect, including data r ecorders and computers. m other board connector can be ordered to fit any pattern on your circuit board. this new connector features the proven twist pin contact with precision contact align- ment with extremely low engaging forces. units are available with con- tacts as few as 40 and as many as 110. wire sizes 28 through 24, any type of plat- ing or color coding, any kind of wire termination including wir e wrap a high degr ee of flexibility for your military or commercial application. two hexagonal polarizing keys can pr ovide up to 36 dif fer ent key combinations are supplied. 4 0 contacts t echnical & per for mance data t wist pin plastic shell connectors electrical contact resistance the average mated contact resistance is 4 milliohms, with a maximum value of 8 milliohms, using standard 24 awg solid copper leads when measured directly behind the crimp joints of the mated pin and socket contacts. the average resistance value at 100 microvolts is 4.8 milliohms. dielectric w ithstanding v oltage 800 v ac rms at sea level (600 for solder pots); 200 v ac rms at 70,000 feet [21,336m] (150 for solder pots). corrosion resistance (per mil- std-202c, method 101b, condition b) both mated and unmated samples do not exceed the maximum allowable contact resistance (8 milliohms) when subjected to the 48 hour salt spray test. durability the contact resistance after 500 mating cycles is less than the maximum allowable, 8 milliohms. insulation resistance gr eater than 5,000 megohms at r oom temperature. maximum current carrying capacity no. 24 contact 3 amperes. it must be recognized however, that all the wires to a connector will not carry their maximum current under all environmen- tal conditions due to wire temperature. mechanical contact engaging & separation forces 8.0 oz. max. [2.24n] (eng.), 0.5 oz. min.[.14n] (sep.) environmental t emperatur e range (operating) -67 f to 257 f [-55 c to +125]. vibration (per mil-std-202c, method 204a, condition d) no discontinuity in excess of 1 sec. dur- ing twelve 20 minute sweeps fr om 10 to 2000 cps at .06 double amplitude or 20 g for ces, whichever is less. materials insulator liquid cr ystal polymer (lcp) per astm d5138 or polyphenylene sulfide per mil-m-24519. contacts pin-contact: copper alloy and ber yllium copper alloy make up the complete constr uction. socket contact: copper alloy . hardware corrosion resistant stainless steel. finishes insulator none. contacts standard finish is 0.000050 [0.00127] gold over copper flash per mil-g-45204, type ii. hardware passivated per qq-p-35.
catalog 1308638 dimensions are in inches and dimensions are shown for usa: 1-800-522-6752 south america: 55-11-3611-1514 revised 8-05 millimeters unless otherwise reference purposes only. canada: 1-905-470-4425 hong kong: 852-2735-1628 specified. v alues in brackets specifications subject mexico: 01-800-733-8926 japan: 81-44-844-8013 www.tycoelectronics.com are metric equivalents. to change. c. america: 52-55-5-729-0425 uk: 44-141-810-8967 rectangular connectors 40 mce series plastic shell edgeboard connectors (continued) mother board (pin side) daughter boar d (socket side) c a .071C076 [1.80C.93] b a a #24 awg copper wire .25 0 [ 6.3 5] .25 0 [ 6.3 5 ] max . typ . .100 [ 2 . 54 ] solder dip typ . min . .2 00 .015 [ 5.08 .381 ] typ . epoxy insulator socket contact/ lead assembly section a-a .2 50 [ 6.3 5 ] .450 [ 1 1. 43] .0 3 0 [. 762 ] max . polarization key location 2 plcs . .2 75 [6.99] 2 plcs . ? .09 3C098 thru .187 [ 2.3 6C 2 .4 9 thru 4 . 75] (2 plcs .) (far ear only) . 300 [ 7.62] .180 [ 4 .57 ] .075 [1.91] .050 [1.27 ] ?187 [ 4 .75 ] thru 2 plcs . (near ear only) b4 b3 b2 b1 a1 a2 a3 a4 . 050 [ 1.27] t yp. .075 [1.91] .050 [ 1.27] .100 [ 2.54] t yp. . 075 [ 1.91] typ. a b c a a b polarization key location 2 plcs. . 250 [ 6.35] ? .0 9 1 C .098 [2.31C2.49] 2 plcs. b4 b3 b 2 b 1 a1 a2 a3 a 4 section a-a epoxy 25 a wg copper wire, gold plated, solder dipped i nsulator pin contact/ lead assembly . 150 [ 3.81] typ. . 250 C.300 [ 6.35 C7.62] t yp. detail b . 325 C.375 [8.26 C9.53] t yp. .225 [5.72] #2-56 unc-2b thd. hex polarizing key 2 supplied (loose packed) #2-56 unc-2b thd. hex polarizing key 2 supplied (loose packed)
catalog 1308638 dimensions are in inches and dimensions are shown for usa: 1-800-522-6752 south america: 55-11-3611-1514 revised 8-05 millimeters unless otherwise reference purposes only. canada: 1-905-470-4425 hong kong: 852-2735-1628 specified. v alues in brackets specifications subject mexico: 01-800-733-8926 japan: 81-44-844-8013 www.tycoelectronics.com are metric equivalents. to change. c. america: 52-55-5-729-0425 uk: 44-141-810-8967 rectangular connectors 41 r e c t a n g u l a r c o n n e c t o r s 2 mce series plastic shell edgeboard connectors (continued) dimensions for .062 [1.57] pc board n o. of abc contacts .010 .005 basic [ .254] [ .127] 4 0 1 .750 1.500 .950 44.45 38.10 24.13 44 1.850 1.600 1.050 4 6.99 40.64 26.67 80 2 .750 2.500 1.950 69.85 63.50 49.53 1 10 3.500 3.250 2.700 8 8.90 82.55 68.58 notes: for pc boards of different widths, consult tyco electronics. how to specify mounting holes on the daughter board side can be modified. mce r1 40 p 6 l 4 0.5 lead length in inches (min.) x special, does not fit description belo w. insulation color or finish 1 all white wire 4 gold plated 7 color coded per 2 all yellow wire 5 tin dipped gold plated m i l-std-681, system 1 3 all gray wire 6 bare (unfinished) 8 special color code 9 ten solid color repeating (starts with black) wire size 4-24 awg 5-25 awg 6-26 awg 8-28 awg 0-30 awg connector series material r1 liquid crystal polymer or p o lyphenylene sulfide layout 40, 44, 80, 1 10 contact type p pin (mother board connector) s socket (daughter board connector) z wire layout as shown on page 40. s solder pots 26 awg max. wire type * a type e, 7 strand *d type e t, 19 strand g 19 strand per mil-22759/11 *b type e t, 7 strand f 7 strand per mil-22759/ 1 1 26 awg, 24 awg *c type e, 19 strand (#28 awg only) l coppe r, solid q stranded per mil- w-22759/33 *per mil- w-16878
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