SBC8279 BNC Connector Plug Equivalent & Substitute Parts

Part Overview

The SBC8279 is a BNC connector plug manufactured by Winchester Interconnect, designed for 75-ohm coaxial cable applications. This male pin connector features crimp termination for both center contact and shield, with a bayonet lock fastening mechanism. The part is classified as Active status with 918 pieces currently in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when design requirements permit alternative qualified components that meet identical electrical and mechanical specifications. The SBC8279 maintains compatibility with Belden 8279 cable group and operates at frequencies up to 1 GHz.

Substiute Parts

SBC8279

Winchester InterconnectIn Stock: 951SBC8279 Datasheet

Current PartRFQ

031-71008-1RFX

Amphenol RFIn Stock: 1327031-71008-1RFX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SBC8279 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: BNC
• Connector Type: Plug, Male Pin
• Impedance: 75 Ohms
• Contact Termination: Crimp
• Shield Termination: Crimp
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Bayonet Lock
• Voltage Rating: 500 V
• Insertion Loss: 0.2 dB
• Mating Cycles: 500

Compatible Cable Groups: The SBC8279 is specified for Belden 8279 cable group. Substitute parts must support this cable group or equivalent cable specifications (RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, 9209).

Frequency Consideration: The SBC8279 operates at maximum 1 GHz. Substitute parts with higher frequency ratings (such as 2 GHz) remain compatible as they exceed minimum requirements without introducing incompatibility.

The part 031-71008-1RFX manufactured by Amphenol RF meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

SBC8279 (Primary Part): The SBC8279 maintains Active product status and is recommended for new designs when Winchester Interconnect supply chain continuity is assured. Current inventory of 918 pieces supports immediate procurement. RoHS compliance and EAR99 classification confirm regulatory alignment for standard applications.

031-71008-1RFX (Substitute Part): The 031-71008-1RFX is classified as Not For New Designs by Amphenol RF. This designation indicates the part remains available but is not recommended for new design implementations. However, it qualifies as a functional equivalent for replacement, repair, or legacy system applications where the SBC8279 becomes unavailable.

Compliance Considerations: Both parts achieve RoHS compliance (SBC8279: RoHS Compliant; 031-71008-1RFX: ROHS3 Compliant). The 031-71008-1RFX includes REACH Affected status, requiring verification against specific REACH substance restrictions if applicable to the end application.

Packaging: SBC8279 is supplied in standard packaging. The 031-71008-1RFX is supplied in Bulk packaging and includes 3 pieces per connector unit (1 Connector, 1 Contact, 1 Ferrule), which may affect procurement quantity calculations.

Frequently Asked Questions (FAQ)

Q: Can the 031-71008-1RFX replace the SBC8279 in existing applications?

A: Yes. Both connectors meet identical electrical specifications (75 Ohms, 500 V, 0.2 dB insertion loss, 500 mating cycles) and mechanical requirements (BNC plug, crimp termination, bayonet lock, free-hanging mount). The 031-71008-1RFX operates at 2 GHz maximum frequency, which exceeds the SBC8279 specification of 1 GHz, confirming compatibility.

Q: Why is the 031-71008-1RFX marked "Not For New Designs"?

A: This designation reflects Amphenol RF's product lifecycle management strategy. The part remains functionally available and suitable for replacement applications, but the manufacturer does not recommend it for new design implementations. For new designs, the SBC8279 (Active status) is the preferred selection.

Q: What cable types are compatible with both connectors?

A: Both connectors support Belden 8279 cable group. The 031-71008-1RFX additionally supports RG-59, 59B, 62, 140, 210, Belden 8241, 8263, and 9209 cable types, providing broader cable compatibility.

Q: Are there packaging differences between these parts?

A: Yes. The SBC8279 uses standard packaging. The 031-71008-1RFX is supplied in Bulk packaging and includes three components per connector unit (connector body, contact, and ferrule). Procurement planning must account for this kit configuration.

Q: Do both parts meet RoHS requirements?

A: Yes. The SBC8279 is RoHS Compliant. The 031-71008-1RFX is ROHS3 Compliant, which represents a more recent RoHS standard iteration. Both meet current RoHS regulatory requirements. The 031-71008-1RFX is also REACH Affected, requiring verification against REACH substance restrictions for specific applications.

Q: What is the maximum operating frequency for each connector?

A: The SBC8279 operates at 1 GHz maximum frequency. The 031-71008-1RFX operates at 2 GHz maximum frequency. Both are suitable for applications operating at or below 1 GHz. The 031-71008-1RFX provides additional frequency margin for higher-speed applications.