PROFESSIONAL QUALITY,
FIXED CONTACT
SUBMINIATURE-D CONNECTORS
Positronic Industries
connectpositronic.com
D-Sub
FOR SHELTERED INDOOR/OUTDOOR ENVIRONMENTAL APPLICATIONS
MD / ED SERIES
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
Di
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Contact Technical
Sales for details.
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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 and Euro-D Series connectors conform to EIA RS 232 and RS
449, and CCITT X.24 interface connector requirements.
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Melo-D and Euro-D Series connectors are professional quality connectors recommended for use in sheltered, non-corrosive indoor or outdoor
environments having normal ventilation, but without temperature or humidity controls. These fixed contact connectors meet the dimensional and performance requirements of IEC 807-2, Performance Level Two.
Melo-D and Euro-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 available
with contact terminations for solder cup, wrap post, and straight and 90°
printed board mount terminations featuring a choice of three printed board
footprints. Each Euro-D connector variant is available with contact terminations for solder cup, wrap post and straight and 90° printed board mount
terminations per standard European metric footprints. Melo-D and Euro-D
rec
tive 2002
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MELO-D/EURO-D SERIES TECHNICAL CHARACTERISTICS
MATERIALS AND FINISHES:
MECHANICAL CHARACTERISTICS:
Insulator:
Contacts:
Fixed Contacts:
Contact Plating:
Shells:
Mounting Spacers
and Brackets:
Push-On Fasteners:
Jackscrew Systems:
Vibration Lock Systems:
Hoods:
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 dichromate seal. Other materials and finishes
available upon request.
Nylon plastic, or brass with tin plate; zinc
plate with dichromate seal.
Phosphor bronze or beryllium copper with
tin plate.
Steel with zinc plate and dichromate 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 dichromate seal.
ELECTRICAL CHARACTERISTICS:
Contact Current Rating:
Initial Contact
Resistance:
Insulator Resistance:
Proof Voltage:
Clearance and Creepage
Distance [minimum]:
Working Voltage:
7.5 amperes nominal.
0.008 ohms maximum.
5 G ohms.
1000 V r.m.s.
0.039 inch [1.0mm].
300 V r.m.s.
CLIMATIC CHARACTERISTICS:
Temperature Range:
Damp Heat, Steady
State:
3
-55°C to +125°C.
10 days.
Contact Retention
In Insulator:
Resistance To Solder
Iron Heat:
Melo-D
Contact Terminations:
Size 20 contact, male contact - 0.040 inch
[1.02mm] diameter. Female contact rugged open entry design.
6 lbs. [27N]
500°F [260°C] for 10 seconds duration per
IEC 512-6.
Solder cup contacts – 0.042 inch [1.06mm]
minimum hole diameter for 20 AWG
[0.5mm2] 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.
Euro-D
Solder cup contacts – 0.042 inch [1.06mm]
Contact Terminations:
minimum hole diameter for 20 AWG
[0.5mm2] wire maximum.
Straight Printed Board Mount – 0.024 inch
[0.60mm] diameter.
90° Printed Board Mount – 0.024 inch
[0.60mm] diameter for European Metric
Footprints.
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.
