Microminiature Connectors
Hermetic-MDMH
MDMH connectors are ideal for applications
Features
requiring a better seal than can be achieved
with epoxy resins.
• Hermetically sealed connector designed for
those applications where a vacuum, inert
gas or a constant controlled pressure are
required to eliminate adverse effects creat-
ed by atmospheric changes.
The connector utilizes size 24 AWG contacts
that are compression glass sealed through a
steel shell and into a diallyl pthalate front end
insulator. An interfacial seal provides
environmental protection when mated. We
recommend MDMH receptacles be soldered
to the chassis or container for a completely
leak-proof joint.
• Steel shells to provide greater strength, pre-
vent chipping, cracking or breaking, offer
electro-magnetic (EMI) and RFI shielding.
• Silicone elastomer compression interfacial
seal to provide a moisture and humidity
seal between each contact and between
contacts and shell.
MDMH receptacles mate with standard MDM
plugs.
Specifications
Standard materials & finishes
Shell Mild steel, tin-lead plated
Insulator Glass filled diallyl phthalate per MIL-M-14. Type SDGF
Contacts Copper alloy, gold plated sockets on mild steel gold plated pins. Solder pots - mild steel gold plated
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 DATA
No. of contacts 9 to 100
Dielectric withstanding voltage 150 VAC
Insulation resistance 5000 Mohm minimum
Wire size #26 through #30 AWG
Contact termination Solder pot
MECHANICAL FEATURES
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 mount
How to Order
MDMH – 51
S
S
Hermetic Micro D Receptacle Series
Contact layout
9, 15, 21, 25, 31, 37, 51, 100
Socket Contacts (only)
Termination type
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
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