
Size 22 Contacts
Connectors Qualified to
DESC Drawing
No. 86040 & 86078
Connectors Qualified to
MIL-DTL-28748
Contacts Qualified to
MIL-C-39029
Telecommunication
U.L. File #E140980
Positr onic
Industries
1
SGMC
Series
HIGH DENSITY RECTANGULAR CONNECTORS with
REMOVABLE CONTACTS
SGMC Series connectors are high reliability, high den-
sity, removable contact rectangular connectors qualified
to DESC drawing numbers 86040 and 86078 and to MIL-
DTL-28748 specifications. SGMC Series connectors uti-
lize crimp contacts to MIL-C-39029, and are intermate-
able with Positronic SGM and SMPL series connectors.
Removable contacts with solder cup and printed board
terminations are also available.
Eleven connector variants, four through 104 poles, are
offered.
Contact spacing is 0.094 inch (2.39mm)
between centers, and contact diameters are 0.030 inch
(0.76mm), rated to five amperes per contact.
A complete array of mounting, locking, polarizing and
shrouding accessories is available for the SGMC Series.
For details, see the High Density Rectangular Connector
Accessories section.
SGMC Series connectors are ideal for low weight, high
density applications. The high reliability of “closed entry”
female contacts insures numerous couplings of the con-
nector without substantial degradation of contact resis-
tance. A “Robi-D Open Entry” design female contact is
also offered for non-military and less rigorous industrial
applications. SGMC Series connectors are ideal for use
in the aerospace, avionics, telecommunications, instru-
mentation, medical and robotics industries.
SGMC SERIES TECHNICAL CHARACTERISTICS
MILITARY SPECIFICATIONS:
Qualified to MIL-DTL-28748/13 and MIL-
DTL-28748/14.
Contacts qualified to
MIL-C-39029/34 and MIL-C-39029/35.
INTERNATIONAL STANDARDS:
IEC 807-1
MATERIALS AND FINISHES:
Insulator:
Glass filled DAP per ASTM-D-5948 type
SDG-F. Green color is standard, black
or grey available.
Removable Contacts:
Copper alloy, 0.000015 inch (0.38
microns) gold over nickel.
Hoods, Cable Adapters:
Aluminum with yellow or black anodize.
Shells:
Aluminum with yellow anodize or black
anodize.
Jackscrew System:
Passivated stainless steel.
Polarizing Guides:
Copper alloy with nickel plate or passi-
vated stainless steel.
Vibration Locks:
Copper alloy with nickel plate.
MECHANICAL CHARACTERISTICS:
Removable Contacts:
Insert contact to rear face of insulator,
release from front face of insulator. Size
22 (5 amp.) contact.
Female contact
has “closed entry” design for highest reli-
ability, or “Robi-D Open Entry” design.
Contact Retention in
Insulator:
6 lbs. (26.5N) minimum.
Contact Termination:
Crimp all wire sizes from 22 AWG (0.3
mm2) through 28 AWG (0.08 mm2).
Solder cup style contact for 22 AWG (0.3
mm2) wire, and printed board termina-
tions.
Press-Fit.
Locking Systems:
Friction, vibration locks and jackscrews.
Polarization:
Polarized guides, polarized shells and
jackscrew system.
Mechanical Operations:
“Closed Entry”: 1000 operations
“Robi-D Open Entry”:
500 operations
per IEC 512-5
Jackscrews:
Standard threads, 2-56 UNC on all
sizes, except 75 and 104 connector vari-
ants, which use 6-32 UNC.
Metric
threads, M2X0.4 and M3X0.5 available.
ELECTRICAL CHARACTERISTICS:
Contact Current Rating:
5 amperes nominal.
Initial Contact Resistance:
0.012 ohms
Flash over Voltage:
2200 V.AC (rms)
Test Voltage:
1000 V.AC (rms)
Insulation Resistance
(minimum):
5 G ohms
Clearance and Creepage
Distance (minimum):
0.060 inch (1.52 mm)
Working Temperature:
-55°C to 135°C
Working Voltage:
250 V.AC (rms)