Press-fit Technical Specifications
Materials and Finishes
| Insulator: | MD, ED, SD: Nylon resin, UL 94V-0, black ORD, RD, HDC: Glass filled DAP per ASTM-D-5948, SDG-F, UL 94V-0, green color MDX: Glass filled polyester per ASTM D5927, UL 94V-0, blue color. |
|---|---|
| Contacts: | Precision machined copper alloy |
| Environmental Initiatives | |
Thermocouple contacts - crimp and PCB mount:
| Type | Material | Color Code |
|---|---|---|
| K | Chromel (+) | White |
| Alumel (-) | Green | |
| T | Copper (+) | Red |
| Constantan (-) | Yellow | |
| E | Chromel (+) | White |
| Constantan (-) | Yellow |
| Contact Plating: | |
|---|---|
| MD, MDX, ED, SD: | Professional performance: Gold flash over nickel plate. Other finishes available upon request. |
| ORD: | Industrial performance: Gold flash over nickel plate. Other finishes available upon request. |
| RD, HDC: | Military performance: 0.000050 inch [1.27 µ] gold over copper plate. Performance level one: Gold flash over nickel plate. Other finishes available upon request. |
| Shells: | MD, MDX, ED, SD, ORD: Steel with tin plate; zinc plate with chromate seal, stainless steel passivated. HDC, RD: Steel with tin plate; zinc and cadmium plate with chromate seal, stainless steel passivated. Other materials and finishes available upon request. |
| Mounting Spacers and Brackets: | Nylon; copper alloy or steel with zinc plate and chromate seal or tin plate; phosphor bronze with tin plate; stainless steel, passivated; polyester. |
| Jackscrew Systems: | Brass or steel with zinc plate and chromate seal or clear zinc plate or tin plate; stainless steel, passivated. |
| Push-On Fasteners: | MD, MDX, ED, SD, HDC Series: Phosphor bronze or beryllium copper with tin plate |
| Vibration Lock Systems: | Slide lock and lock tabs, steel with nickel plate |
| Hoods: | Composite and plastic, UL 94V-0; brass or steel with zinc plate and chromate seal. Aluminum; aluminum with electroless nickel plate. For aluminum hoods, zinc content is 1% maximum. Die cast zinc. Composite and plastic, UL 94V-0; brass or steel with zinc plate and chromate seal. Aluminum; aluminum with electroless nickel plate; aluminum with yellow anodize; aluminum with yellow chromate conversion. For aluminum hoods, zinc content is 1% maximum. Die cast zinc. |
Low magnetic versions are available. Contact Technical Sales.
Mechanical Characteristics
| Contacts: | |
|---|---|
| Male: | Size 20. 0.040 inch [1.02 mm] mating diameter. |
| Female: | MD, ED: Size 20. Rugged open entry design. SD: Size 20. Robi-D open entry design. MDX, HDC, RD: Size 20. PosiBand closed entry design. ORD: Size 20. Rugged Robi-D open entry design or PosiBand closed entry design. |
| Removable Contacts: | SD, RD, ORD: Insert contact to rear face of insulator and release from rear face of insulator. |
| Contact Retention in Insulator: | MD, MDX, ED, SD: 6 lbs. [27 N] HDC, RD, ORD: 9 lbs. [40 N] |
| Resistance to Solder Iron Heat: | MD, ED: 500°F [260°C] for 10 seconds duration. HDC: 650°F [350°C] for 10 seconds duration. Per IEC 60512-6 |
| Contact Terminations: | |
| Removable crimp: | SD: Closed barrel crimp, wire sizes 18 AWG [1.00 mm²] through 32 AWG [0.03 mm²]. RD: Closed barrel crimp, wire sizes 18 AWG [1.00 mm²] through 30 AWG [0.05 mm²]. ORD: Closed barrel crimp, wire sizes 18 AWG [1.00 mm²] through 24 AWG [0.25 mm²]. |
| Solder cup contacts: | MD, MDX, ED, HDC: 0.042 inch [1.06 mm] minimum hole diameter for 20 AWG [0.5mm²] wire maximum. |
| Straight printed board mount: | MD, MDX: 0.028 inch [0.71 mm] termination diameter. ED, SD: 0.024 inch [0.61 mm] termination diameter. HDC: 0.028 inch [0.71 mm] termination diameter and 0.024 inch [0.61 mm] termination diameter. |
| Right angle (90°) printed board mount: | MD, MDX: 0.028 inch [0.71 mm] termination diameter for all printed board footprints. ED: 0.024 inch [0.60 mm] termination diameter for European Metric footprint. HDC: 0.028 inch [0.71 mm] termination diameter for Inch System footprint, and 0.024 inch [0.61 mm] termination diameter for European Metric footprint. |
| Wrap post: | MD: 0.025 inch [0.64 mm] square. |
| Shells: | MD, ED, SD, HDC, RD, ORD: Male shells may be dimpled for EMI/ESD ground paths. |
| Polarization: | Trapezoidally shaped shells and polarized jackscrews. |
| Mounting to Angle Brackets: | MD, MDX, ED, HDC: Jackscrews and riveted fasteners with a 0.120 inch [3.05 mm] clearance hole, and threaded riveted fasteners with 4-40 threads and polyester lock inserts. |
| Mounting to Printed Board: | MD, MDX, ED, HDC: Rapid installation push-on fasteners and threaded posts. SD: Rapid installation push-on fasteners. |
| Locking Systems: | Jackscrews and vibration locking systems. |
| Mechanical Operations: | Open entry contacts: 500 operations minimum PosiBand closed entry contacts: 1000 operations minimum Per IEC 60512-5 |
Electrical Characteristics
| Contact Current Rating: | |
|---|---|
| Open entry contacts: | 7.5 amperes nominal |
| PosiBand closed entry contacts, tested per UL 1977: |
18 amperes, 2 contacts energized. 14 amperes, 6 contacts energized. 11 amperes, 15 contacts energized. 10 amperes, 25 contacts energized. 9 amperes, 50 contacts energized. See Temperature Rise Curves for details |
| Initial Contact Resistance: | Open entry contacts: 0.008 ohms maximum PosiBand closed entry contacts: 0.004 ohms maximum |
| Proof Voltage: | 1000 V r.m.s. |
| Insulation Resistance: | 5 G ohms |
| Clearance and Creepage Distance (minimum): | 0.039 inch [1.0 mm] |
| Working Voltage: | 300 V r.m.s. |
Climatic Characteristics
| Temperature Range: | -55°C to +125°C |
|---|---|
| Damp Heat, Steady State: | MD, MDX, ED, SD, ORD: 10 days RD: 21 days HDC: 56 days |
| MD Series connectors can be supplied with interfacial seals and sealed between shell and insulator. This provides an additional degree of moisture resistance. | |
Feeds