Positronic Connectors - Combo-D Technical Specifications

Insulator:	Glass-filled polyester per MIL-M-24519, UL 94V-0 blue color
Shells:	Steel or brass with tin plate; or steel with zinc plate and chromate seal; or stainless steel passivated. Other materials and finishes available upon request
Mounting Brackets And Spacers:	Nylon; steel or brass with tin plate or zinc plate and chromate seal; phosphor bronze with tin plate
Push-On Fasteners:	Phosphor bronze and beryllium copper with tin plate
Jackscrew Systems:	Brass or steel with zinc plate and chromate seal, or clear zinc plate
Hoods:	Composite or plastic material, UL 94V-0 steel with zinc plate and chromate seal; or zinc diecast
Signal Contacts:	Male: precision machined copper alloy Female: precision machined high tensile copper alloy, CBC includes stainless steel shroud or open entry Robi-D design Plating: Gold flash over nickel plate and gold 0.000050 (1.27 µ) over nickel plate. Other finishes available upon request.
Non-magnetic versions are available, contact Technical Sales

Thermocouple contacts - crimp and PCB mount:

Power Contacts:	Male & Female: Machined of copper alloy retainers of beryllium copper Plating: Gold flash over nickel. Other finishes available upon request.
Shielded and High Voltage Contacts:	Male: Precision machined copper alloy Female: Precision machined high tensile copper alloy, retainers of beryllium copper Plating: Gold flash over nickel or gold 0.000030 (0.76 µ) over nickel. Shielded body plating is gold flash over nickel.

Signal Contacts:
Contact current rating:	CBD/CBM/CBC/CBDP: 7.5 amperes nominal CBDD: 5 amperes nominal
Initial contact resistance:	CBD/CBM/CBC/CBDP: 0.008 ohms maximum CBDD: 0.005 ohms maximum
Proof voltage:	1000 V r.m.s.

Power Contacts:
Contact current rating:	CBD/CBM/CBC: See Temperature Rise Curves CBDP: 15 amperes nominal for right angle (90°) board mount. 10, 20 and 40 amperes nominal for removable contacts with solder or crimp terminations. CBDD: 10, 15, 20, 30 and 40 amperes nominal
Press-fit contact current rating:	35 amperes nominal
Initial contact resistance:	Standard contact material: 0.0005 ohms max. per IEC 512-2, Test 2b High conductivity contact material: 0.00035 ohms max. per IEC 512-2, Test 2b
Proof voltage:	1000 V r.m.s.

Shielded Contacts:
Initial contact resistance:	0.008 ohms maximum
Nominal impedence:	50 ohms
Insertion loss:	-0.46 dB at 1 GHz; -1.5 dB at 2 GHz
VSWR:	1.15 avg at 1 GHz; 1.56 avg at 2 GHz* *Values measured using frequency domain techniques
Proof Voltage:	1000 V r.m.s.

High Voltage Contacts:
Flash over voltage:	3600 V r.m.s.
Proof voltage:	2700 V r.m.s.
Initial contact resistance:	0.008 ohms maximum

Connector:
Insulator resistance:	5 G ohms
Clearance/creepage distance:	CBD/CBM/CBC/CBDP: 0.039 inch (1.0 mm) minimum CBDD: 0.042 inch (1.06 mm) minimum
Working voltage:	300 V r.m.s.

Signal Contacts:
Male:	CBD/CBM/CBC/CBDP: Size 20. 0.040 inch [1.02 mm] diameter. CBDD: Size 22. 0.030 inch [0.76 mm] diameter.
Female:	CBD: Size 20. Open entry design. CBM: Size 20. Closed entry design. CBC: Size 20. Closed entry design with stainless steel shroud or open entry Robi-D design. CBDP: Size 20. Rugged open entry design. CBDD: Size 22. Closed entry design.

Power Contacts:	Size 8 contacts. Male contact – 0.142 inch [3.61 mm] diameter. CBD/CBM/CBDD: Female contact features Large Surface Area (LSA) closed entry contact design utilizing BeCu mechanical retention member. CBDP: Female contact – open entry and closed entry options
Contact Retention in Insulator:	Signal: 9 lbs. [40N] Power, shielded, high voltage: 22 lbs [98N]
Resistance to Solder Iron Heat:	CBD/CBM/CBDD: 500° F [260° C] for 10 seconds duration per IEC 512-6

Contact Terminations:

Signal Contacts:
Solder cup contacts:	CBD/CBM: 0.042 inch [1.06 mm] minimum hole diameter for 20 AWG [0.5 mm²] wire maximum CBDD: 0.035 inch [0.89 mm] minimum hole diameter for 22 AWG [0.3mm²] wire maximum
Straight printed board mount:	CBD/CBM: 0.028 inch [0.71 mm] diameter CBDD: 0.020 inch [0.51 mm] diameter
90° printed board mount:	CBD/CBM/CBDP: 0.028 inch [0.71 mm] diameter; supported by alignment bar in CBDP CBDD: 0.030 inch [0.76 mm] diameter
Crimp:	CBC: Closed barrel crimp, wire sizes 18 AWG [1.0mm²] through 30 AWG [0.05 mm²]

Power Contacts, Removable, Crimp or Solder:	CBD/CBM/CBC/CBDD: Male and female contacts have terminations for wire sizes 6, 8, 10, 12 and 16 AWG. CBDP: Removable solder cup contacts with wire hole diameters of 0.188 inch [4.78 mm], 0.112 inch [2.84 mm] and 0.069 inch [1.75 mm]
Power Contacts, Printed Board Mount:	CBD/CBM/CBC/CBDD: Printed board terminations with 0.078 inch [1.98 mm], 0.093 inch [2.36 mm] and 0.125 inch [3.18 mm] diameters. CBDP: 90° printed board mount terminations with 0.078 inch [1.98 mm] diameter
Shielded Contacts, Removable:	See table of maximum cable sizes for contact termination dimensions
High Voltage Contacts:	Straight and 90° terminations – 0.041 inch [1.04 mm] minimum hole diameter

Shells:	Male shells may be dimpled for EMI/ESD ground paths.
Polarization:	Trapezoidally shaped shells and polarized jackscrews
Mounting to Angle Brackets:	Jackscrews, riveted fasteners with 0.120 inch [3.05 mm] diameter hole, threaded riveted fasteners with 4-40 threads, or 4-40 threads with nylon inserts
Mounting to Printed Board:	Rapid installation push-on fasteners. Threaded posts as well for CBD/CBM/CBC/CBDD.
Locking Systems:	Jackscrews and vibration locking system for either front or rear panel mounted connectors.
Mechanical Operations, Signal Contacts:	CBD/CBDP/CBDD: 500 operations CBM: 1,000 operations CBC: 500 operations, open entry contact; 1,000 operations, closed entry contact with 0.000050 inch [1.27µ] gold plating Per IEC 512-5

Temperature Range:	-55°C to +125°C
Damp Heat, Steady State:	10 days