MIL-C-83513 Microminiature MDMH • Lightweight, rugged microminiature connectors • Contacts on .050 (1.27) centers, providing significant space and weight savings. • Field proven, reliable twist pin contacts offer high mechanical and electrical integrity over hundreds of mating and unmating cycles. MDMH microminiature hermetic connectors are compression glass sealed through a steel shell and into a diallyl phthalate “front end” insulator. An interfacial seal provides environmental protection when mated. MDMH receptacles are soldered to a chassis or container providing a completely leak-proof unit. How to Order MDMH - 51 S S SERIES CONTACT LAYOUT CONTACTS TERMINATION TYPE SERIES: Hermetic Micro D Receptacle CONTACT LAYOUT: 9, 15, 21, 25, 31, 37, 51, 100 CONTACTS: Socket (only) TERMINATION TYPE: Solder pot to accept #26 AWG max. harness wire Standard Data MATERIALS AND FINISHES Shell Mild steel, fused tin Insulator Glass-filled diallyl phthalate per MIL-M-14. Type SDGF Contacts Copper Alloy, gold plated sockets on mild steel gold/nickel plated pins Contact Termination Solder pots Hermetic Seal Compression glass Leak Rate 1 micron cubic ft./hr. max (1.04 x 10-5 cc/sec at 1 ATM pressure differential) ELECTRICAL No. of Contacts 9 thru 100 Dialectric Withstanding Voltage 150 VAC Insulation Resistance 5,000 Meg. Ohms Min. Wire Size #26 thru #30 AWG Contact Termination Solder pot ELECTRICAL Size or Length 8 sizes Service Class Hermetically sealed Coupling Friction/jacks Polarization Keystone-shaped shells Contact Spacing .050 (1.27) centers Shell Style Receptacle, solder mounted Dimensions shown in inches (mm) Specifications and dimensions subject to change www.ittcannon.com J-43 J Hermetic Connectors Note: Mating Micro D Plugs are the MDM Series. To order call: ITT Cannon Santa Ana, California 714-557-4700 MIL-C-83513 Microminiature MDMH Contact Arrangements Face view of socket insert — use reverse order for wiring side. J Contact indentification numbers are for reference only and do not appear on insulator or connector body. Hermetic Connectors Shell Dimensions Part Number by Shell Size MDMH-9S MDMH-15S MDMH-21S MDMH-25S MDMH-31S MDMH-37S MDMH-51S MDMH-100S A Max. .885 (22.48) 1.035 (26.29) 1.185 (30.10) 1.285 (32.64) 1.435 (36.45) 1.585 (40.26) 1.535 (38.99) 2.275 (57.78) B Min. .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) D Max. .270 (6.86) .270 (6.86) .270 (6.86) .270 (6.86) .270 (6.86) .270 (6.86) .315 (8.00) .365 (9.27) C Max. .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) E Max. .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) G Max. .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 inches (mm) Specifications and dimensions subject to change J-44 www.ittcannon.com