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PROFESSIONAL QUALITY,
FIXED CONTACT
SUBMINIATURE-D CONNECTORS
FOR SHELTERED INDOOR/OUTDOOR ENVIRONMENTAL APPLICATIONS
Positronic Industries
connectpositronic.com
3
DIMENSIONS ARE IN INCHES [MILLIMETERS].
ALL DIMENSIONS ARE SUBJECT TO CHANGE.
M
MATERIALS AND FINISHES:
Insulator:
Contacts:
Nylon resin, UL 94V-0, black color.
Male contacts – precision machined brass.
Female contacts – precision machined high
tensile phosphor bronze.
Professional performance Gold flash over
nickel plate. Other finishes available upon
request.
Steel with tin plate; zinc plate with chromate
seal, stainless steel passivated. Other
materials and finishes available upon
request.
Contact Plating:
Shells:
Mounting Spacers
and Brackets:
Nylon plastic, or brass with tin plate; zinc
plate with chromate seal.
Phosphor bronze or beryllium copper with
tin plate.
Steel with zinc plate and chromate seal, or
clear zinc plate.
Slide lock and lock tabs, steel with nickel
plate.
Thermoplastic UL 94V-0. Composite, brass
or steel with zinc plate and chromate seal.
Push-On Fasteners:
Jackscrew Systems:
Vibration Lock Systems:
Hoods:
Non-magnetic versions are available, contact Technical Sales.
ELECTRICAL CHARACTERISTICS:
Contact Current Rating:
7.5 amperes nominal.
Initial Contact
Resistance:
0.008 ohms maximum.
Insulator Resistance:
5 G ohms.
Proof Voltage:
1000 V r.m.s.
Clearance and Creepage
Distance [minimum]:
0.039 inch [1.0mm].
Working Voltage:
300 V r.m.s.
Size 20 Contacts, Fixed
Professional Quality
Connectors
IEC Publication 807-2
Performance Level Two
U.L. Recognized
File #E49351
CSA Recognized
File #LR54219
Telecommunication
U.L. File #14098
Melo-D Series connectors are professional quality connectors rec-
ommended for use in sheltered, non-corrosive indoor or outdoor envi-
ronments having normal ventilation, but without temperature or humid-
ity controls. These fixed contact connectors meet the dimensional and
performance requirements of IEC 807-2, Performance Level Two.
Melo-D Series connectors utilize precision machined contacts which
are fixed within the connector body. The female contact is an open
entry design contact, precision machined of high tensile phosphor
bronze.
Six standard connector variants are offered in arrangements of 9,
15, 25, 29, 37 and 50 contacts. Each Melo-D connector variant is avail-
able with contact terminations for solder cup, wrap post, and straight
and 90° printed board mount terminations featuring a choice of three
printed board footprints. Melo-D Series connectors are mateable and
compatible with all D-Subminiature connectors conforming to IEC 807-
2 and MIL-DTL-24308.
A wide assortment of printed board mounting hardware, cable
support hoods and locking systems is available from stock.
Melo-D Series connectors conform to EIA RS 232 and RS 449, and
CCITT X.24 interface connector requirements.
MELO-D SERIES TECHNICAL CHARACTERISTICS
CLIMATIC CHARACTERISTICS:
Temperature Range:
Damp Heat, Steady
State:
-55°C to +125°C.
10 days.
MD Series connectors can be supplied with interfacial seals and
sealed between shell and insulator.This provides an additional
degree of moisture resistance. See Accessories catalog for details.
MECHANICAL CHARACTERISTICS:
Fixed Contacts:
Size 20 contact, male contact - 0.040 inch
[1.02mm] diameter. Female contact -
rugged open entry design.
Contact Retention
In Insulator:
6 lbs. [27N]
Resistance To Solder
500°F [260°C] for 10 seconds duration per
Iron Heat:
IEC 512-6.
Contact
Solder cup contacts – 0.042 inch [1.06mm]
Terminations:
minimum hole diameter for 20 AWG
[0.5mm
2
] wire maximum.
Straight Printed Board Mount – 0.028 inch
[0.71mm] diameter.
90° Printed Board Mount – 0.028 inch
[0.71mm] diameter for all printed board
footprints.
Wrap Post – 0.025 inch [0.64mm] square.
Shells:
Male shells may be dimpled for EMI/ESD
ground paths.
Polarization:
Trapezoidally shaped shells and polarized
jackscrews.
Mounting To Angle Brackets:
Jackscrews and riveted fasteners with a
0.120 inch [3.05mm] clearance hole, and
threaded riveted fasteners with 4-40
threads and nylon lock inserts.
Mounting To Printed Board:
Rapid installation push-on fasteners and
threaded posts.
Locking Systems:
Jackscrews and vibration locking systems.
Mechanical Operations:
500 operations minimum per IEC 512-5.
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RoHS
For RoHS options
see page 8.
NEW!
NEW!