Molex 0731000002 BNC Connector Jack - Equivalent & Substitute Parts

Part Overview

The Molex 0731000002 is a BNC connector jack (female socket) rated for 75 ohms impedance, designed for panel mount applications with bayonet lock fastening. This connector is suitable for coaxial cable termination in RF applications requiring crimp or solder contact termination. The part is currently active in production with 765 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design flexibility allows for functionally equivalent alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

0731000002

MolexIn Stock: 8030731000002 Datasheet

Current PartRFQ

031-71011

Amphenol RFIn Stock: 919031-71011 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0731000002 is determined by strict equivalence across the following critical parameters:

• Connector style (BNC)
• Connector type (Jack, Female Socket)
• Impedance rating (75 Ohms)
• Mounting configuration (Panel Mount, Bulkhead - Front Side Nut)
• Contact termination method (Crimp or Solder)
• Shield termination (Crimp)
• Fastening mechanism (Bayonet Lock)
• Material composition (Brass body, Nickel finish, Phosphor Bronze center contact, Gold plating)
• Dielectric material (PTFE)
• Mating cycle rating (500 cycles minimum)

The Amphenol RF 031-71011 meets all these criteria and qualifies as a direct substitute. Both connectors are designed for identical RF coaxial cable applications and maintain the same mechanical and electrical interface specifications.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0731000002 is the primary selection for new designs due to its active product status. The Amphenol RF 031-71011 is electrically and mechanically equivalent and maintains full ROHS3 compliance and unlimited moisture sensitivity rating.

Selection between these parts should be based on availability and supply chain requirements. The Amphenol RF 031-71011 carries a "Not For New Designs" status, making it suitable only for legacy system support, repair, or replacement applications where the Molex part is unavailable.

Both connectors are certified to ROHS3 standards. The Amphenol RF part is REACH Affected, while the Molex part is REACH Unaffected. This distinction may be relevant for applications subject to REACH regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-71011 be used as a direct replacement for the Molex 0731000002?

A: Yes. Both connectors share identical BNC jack configuration, 75 ohm impedance, panel mount bulkhead design, bayonet lock fastening, and material specifications. Mechanical and electrical interface compatibility is maintained.

Q: What is the difference in contact termination between these parts?

A: The Molex 0731000002 supports both crimp and solder termination methods. The Amphenol RF 031-71011 supports crimp termination only. If solder termination is required, the Molex part must be used.

Q: Why is the Amphenol RF part marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production status. It remains available for existing applications and legacy system support but should not be selected for new product development. The Molex 0731000002, with active status, is the recommended choice for new designs.

Q: Are there cable compatibility differences between these connectors?

A: The Molex 0731000002 is specified for RG-59B and RG-62A cables. The Amphenol RF 031-71011 supports a broader cable range including RG-59, 59B, 62, 140, 210, and specific Belden cable types (8241, 8263, 8279, 9209). Both are compatible with standard 75 ohm coaxial cables within their specified ranges.

Q: What compliance certifications apply to both parts?

A: Both connectors are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1). The Amphenol RF part is REACH Affected, while the Molex part is REACH Unaffected. Verify REACH compliance requirements for your specific application.

Q: Are the mating cycle ratings identical?

A: Yes. Both connectors are rated for 500 mating cycles, ensuring equivalent mechanical durability and connector lifespan.