Amphenol RF 031-4774-3 BNC Triaxial Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-4774-3 is an active BNC triaxial connector plug designed for RF coaxial applications requiring 75-ohm impedance. This male pin solder-type connector operates at frequencies up to 500 MHz and is suitable for free-hanging in-line installations. The connector features bayonet lock fastening, weatherproof ingress protection, and operates across a wide temperature range of -65°C to 165°C. Substitute parts are identified when electrical parameters, mechanical compatibility, and regulatory compliance remain equivalent across the product line.

Substiute Parts

031-4774-3

Amphenol RFIn Stock: 781031-4774-3 Datasheet

Current PartRFQ

031-4774-5

Amphenol RFIn Stock: 1188031-4774-5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031-4774-3 are identified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Impedance: 75 Ohms
• Frequency - Max: 500 MHz
• Voltage Rating: 5000 V
• Insertion Loss: 0.2 dB

Mechanical Equivalence Criteria:

• Connector Style: BNC, Triaxial
• Connector Type: Plug, Male Pin
• Contact Termination: Solder
• Shield Termination: Clamp
• Fastening Type: Bayonet Lock
• Mounting Type: Free Hanging (In-Line)
• Cable Group: RG-307A

Material & Environmental Equivalence Criteria:

• Center Contact Material: Beryllium Copper
• Body Material: Brass
• Dielectric Material: Polytetrafluoroethylene (PTFE)
• Operating Temperature: -65°C ~ 165°C
• Ingress Protection: Weatherproof

Regulatory Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Affected
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 031-4774-5 meets all equivalence criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 031-4774-3 and 031-4774-5 are active products manufactured by Amphenol RF and maintain full compliance with ROHS3 and REACH regulatory requirements. Selection between these parts may be based on inventory availability and lead time considerations. The 031-4774-3 has 702 pieces in stock, while the 031-4774-5 has 1140 pieces in stock. Both parts carry identical electrical, mechanical, and environmental specifications, making them interchangeable for applications requiring BNC triaxial 75-ohm connectors with solder termination and bayonet fastening.

Frequently Asked Questions (FAQ)

Q: Can the 031-4774-5 be used as a direct replacement for the 031-4774-3?

A: Yes. Both parts are parametrically equivalent across all electrical, mechanical, material, and environmental specifications. They are interchangeable for identical applications.

Q: What are the key compatibility factors for substitution?

A: Substitution is valid when the following parameters match: connector style (BNC, Triaxial), connector type (Plug, Male Pin), impedance (75 Ohms), contact termination (Solder), fastening type (Bayonet Lock), mounting type (Free Hanging In-Line), cable group (RG-307A), operating temperature range (-65°C ~ 165°C), and voltage rating (5000 V).

Q: Are there any differences in packaging or inventory between these parts?

A: Both parts are supplied in bulk packaging. The 031-4774-5 has higher current inventory (1140 pieces) compared to the 031-4774-3 (702 pieces).

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 031-4774-3 and 031-4774-5 are ROHS3 compliant, REACH affected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: What is the maximum frequency rating for these connectors?

A: Both connectors are rated for a maximum frequency of 500 MHz with an insertion loss of 0.2 dB.

Q: Are these connectors suitable for outdoor or harsh environments?

A: Yes. Both connectors feature weatherproof ingress protection and operate across a wide temperature range of -65°C to 165°C, making them suitable for outdoor and harsh environmental applications.