High Density Miniature
Circular Connectors
(HDMC)
HDMC 2010
Sabritec’s High Density Miniature Circular Connectors
(HDMC) have the performance of a MIL-DTL-38999
connector in a smaller size with significant weight savings.
These connectors are offered with Size 23 crimp
removable contacts or Size 12 High Frequency Coax
(MDHC) contacts and are compatible with industry
standard backshells.
MDHC Coax contacts have a frequency range up to 40
GHz and offer a low VSWR (1.3:1 typical up to 30 GHz and
1.5:1 typical up to 40 GHz) per mated pair.
A wide variety of high density space saving shell sizes with
Size 10 High Speed Twinax, rugged Fiber Optic signaling,
Coax, shielded Triax and EMI filtered layouts are
available in larger shell sizes. Size 10 Twinax/Quadrax
contacts are ideal for applications exceeding 2 GBits/sec.
Please consult factory for more information on alternate
shell sizes and layouts.
HDMC Connector Features and Benefits
Meets or exceeds electrical and environmental perfomance criteria for MIL DTL-38999 style connectors
Compatible with industry standard backshells
Various styles and features to suit a wide variety of applications
Advantages over MIL-DTL-38999 Shell Size 9 Connectors
Greater than 50% space savings
Increased signal density by 40%
70% weight reduction
Electrical Specifications
Dielectric
Withstanding
Voltage
500 VRMS @sea level with 70% relative
humidity
Insulation
Resistance
MDHC: 1000 mega-ohms min. @ 250
VDC
Size 23 Signal: 5000 megohms min.
Contact Current
Rating
5 Amps max. for 0.030 Signal Pins
2.0 Amps max. for 0.015 Signal Contacts
Magnetic
Permeability
2.0 max.
Frequency
Range (MDHC)
DC-40 GHz
VSWR (MDHC)
MDHC
1.5:1 (typ) Mated Pair up to 40 GHz
1.3:1 (typ) Mated Pair up to 30 GHz
Material & Finishes
Center & Outer
Contacts
Brass per ASTM-B16, Alloy UNS
C36000
or BeCu per ASTM-B196, Alloy UNS
C17200, C17300
Gold Plate per ASTM-B488, Type II,
Class 1.25
Jam Nut
Aluminum Alloy
Grommet &
Interfacial Seal
Silicon base elastomer
Insulators
High grade plastic/epoxy resin
Plug &
Receptacle Shells
Aluminum per ASTM-B211/221, 6061-
T6
Electroless Nickel Plate per SAE-AMS-
C-26074 or CAD per QQ-P-416