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Microminiature Connectors
MDMH connectors are ideal for applicationsrequiring a better seal than can be achievedwith epoxy resins.
The connector utilizes size 24 AWG contactsthat are compression glass sealed through asteel shell and into a diallyl pthalate front endinsulator. An interfacial seal provides
environmental protection when mated. Werecommend MDMH receptacles be solderedto the chassis or container for a completelyleak-proof joint.
MDMH receptacles mate with standard MDMplugs.
Hermetic-MDMH
Features
•Hermetically sealed connector designed forthose applications where a vacuum, inertgas or a constant controlled pressure arerequired to eliminate adverse effects creat-ed by atmospheric changes.•Steel shells to provide greater strength, pre-vent chipping, cracking or breaking, offerelectro-magnetic (EMI) and RFI shielding.•Silicone elastomer compression interfacialseal to provide a moisture and humidityseal between each contact and betweencontacts and shell.
Specifications
Standard materials &finishes
ShellInsulatorContactsHermetic seal
Leak rate
ELECTRICAL DATA
No. of contacts
Dielectric withstanding voltage
Insulation resistance
Wiresize
Contact terminationMECHANICAL FEATURES
Size or lengthService class
CouplingPolarizationContact spacing
Shell style
Mild steel, tin-lead plated
Glass filled diallyl phthalate per MIL-M-14. Type SDGF
Copper alloy, gold plated sockets on mild steel gold plated pins. Solder pots - mild steel gold platedCompression glass
1 micron cubic ft/hr max (1.04 x 10-5 cc/sec at 1 ATM pressure differential)9to 100150 VAC
5000 Mohm minimum#26 through #30 AWGSolder pot
8sizes
Hermetically sealedFriction/jacks
Keystone shaped shells.050 (1,27) centers
Receptacle, solder mount
How to Order
MDMH–51
Hermetic Micro D Receptacle SeriesContact layout
9, 15, 21, 25, 31, 37, 51, 100
SS
Socket Contacts (only)Termination type
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
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元器件交易网www.cecb2b.com
Microminiature Connectors
Contact Arrangements
Face vew of socket insert - use reverse order for wiring side.
543218765432111 10 9 8 7 6 5 4 3 2 1 Hermetic-MDMH
13 12 11 10987654321987615 141 312 11 10 921 20 19 18 17 16 15 14 13 1225 24 23 22 21 20 19 18 17 16 15 149Contacts 15 Contacts 21 Contacts
25 Contacts
18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 135 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 1916 15 14 13 12 11 1098765432119 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 131 30 29 28 27 26 25 24 23 22 21 20 19 18 1737 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 2051 50 49 48 47 46 45 44 43 42 41 40 39 38 37 3631Contacts
1234567837Contacts
910 1112131415161718192021 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 51 Contacts
52 53 54 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 90 91 92 93 94 95 96 97 98 99 100 100 Contacts
Contact identification numbers a refor refe rence only and do not appear on insulator or connector bod y.
Shell Dimensions
6,61
(.260)MAX
ABF
4,58(.180)MAX
DGE
2HOLES 2-56 UNC (9-51WAY) 4-40 UNC (100 WAY)
5,06 (.199)
1,93
(.076)MAX
C
Part Numberby shell sizeMDMH-9SMDMH-15SMDMH-21SMDMH-25SMDMH-31SMDMH-37SMDMH-51SMDMH-100S
Amax.885 (22,48)1.035 (26,29)1.185 (30,10)1.285 (32,)1.435 (36,45)1.585 (40,26)1.535 (38,99)2.275 (57,78)
Bmax.738 (18,74).888 (22,55)1.038 (26,36)1.137 (28,87)1.288 (32,72)1.438 (36,53)1.388 (35,26)2.078 (52,78)
Cmax.400 (10,16).550 (13,97).770 (17,78).800 (20,32).950 (24,13)1.100 (27,94)1.050 (26,67)1.455 (36,97)
Dmax.270 (6,86).270 (6,86).270 (6,86).270 (6,86).270 (6,86.270 (6,86).310 (8,00).365 (9,27)
Emax.430 (10,92).430 (10,92).430 (10,92).430 (10,92).430 (10,92).430 (10,92).473 (12,01).522 (13,26)
F
±.005 (0,13).565 (14,35).715 (18,16).865 (21,97).965 (24,51)1.115 (28,32)1.265 (32,13)1.215 (30,86)1.800 (45,72)
Gmax.261 (6,63).261 (6,63).261 (6,63).261 (6,63).261 (6,63).261 (6,63).315 (8,00).410 (10,41)
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
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