SBC8263 BNC Connector Plug 75 Ohm Crimp - Equivalent & Substitute Parts

Part Overview

The SBC8263 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 product status with 1105 units in current inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when design requirements permit alternative manufacturers meeting identical electrical and mechanical specifications. The SBC8263 maintains compatibility with Belden 8263 cable group and operates at frequencies up to 1 GHz.

Substiute Parts

SBC8263

Winchester InterconnectIn Stock: 1184SBC8263 Datasheet

Current PartRFQ

031-71008-1RFX

Amphenol RFIn Stock: 1327031-71008-1RFX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SBC8263 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 SBC8263 is specified for Belden 8263 cable group. Substitute parts must support this cable group or compatible alternatives within the same impedance class.

Regulatory Compliance: All substitute parts must maintain RoHS compliance status and MSL rating of 1 (Unlimited) to ensure equivalent environmental and handling characteristics.

The substitute part 031-71008-1RFX (Amphenol RF) meets all mandatory matching parameters and extends compatibility to additional cable groups including RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, and 9209.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SBC8263): The SBC8263 maintains Active product status and is recommended for new designs. This part carries full RoHS compliance and is currently in stock with 1105 units available. Use this part number for all new applications requiring 75-ohm BNC crimp connectors with bayonet lock fastening.

Substitute Part Selection (031-71008-1RFX): The 031-71008-1RFX is classified as "Not For New Designs" by Amphenol RF. This designation indicates the part is available for legacy system support and replacement applications only. Selection of this substitute is appropriate when:

• Existing inventory of SBC8263 is depleted
• Design modifications to existing systems require component replacement
• Supply chain constraints prevent access to the primary part

The 031-71008-1RFX provides extended frequency capability (2 GHz versus 1 GHz) and specified operating temperature range (-65°C ~ 165°C), which may benefit applications operating beyond the environmental specifications of the primary part. However, the "Not For New Designs" status must be acknowledged in design documentation.

Compliance Considerations: Both parts maintain equivalent RoHS compliance and MSL ratings. The 031-71008-1RFX includes REACH Affected status, requiring verification against project-specific regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 031-71008-1RFX be used as a direct replacement for the SBC8263 in existing designs?

A: Yes. Both parts 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 is electrically and mechanically interchangeable with the SBC8263.

Q: What is the significance of the "Not For New Designs" status on the 031-71008-1RFX?

A: This designation indicates that Amphenol RF does not recommend this part for incorporation into new product designs. The part remains available for legacy system support and field replacements. New designs should prioritize the SBC8263 (Active status) or evaluate alternative current-production parts from the manufacturer's active portfolio.

Q: Are there cable compatibility differences between these parts?

A: The SBC8263 is specified for Belden 8263 cable group. The 031-71008-1RFX supports a broader cable compatibility list including RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, and 9209. Both parts are compatible with Belden 8263 cable. The extended compatibility of the 031-71008-1RFX does not restrict its use with Belden 8263 applications.

Q: What packaging differences exist between these parts?

A: The SBC8263 packaging specification is not provided in the technical data. The 031-71008-1RFX is supplied in Bulk packaging. Confirm packaging requirements with your procurement specification before finalizing part selection.

Q: Does the gold plating on the 031-71008-1RFX center contact affect compatibility?

A: No. Gold plating on the center contact is a material enhancement that improves corrosion resistance and contact reliability. This does not affect electrical or mechanical compatibility. The gold-plated contact is compatible with standard crimp ferrules and cable terminations.

Q: What is the frequency capability difference between these parts?

A: The SBC8263 is rated to 1 GHz maximum frequency. The 031-71008-1RFX extends to 2 GHz maximum frequency. For applications operating below 1 GHz, both parts are equivalent. Applications requiring operation between 1 GHz and 2 GHz must use the 031-71008-1RFX.

Q: Are there operating temperature considerations for part selection?

A: The SBC8263 operating temperature range is not specified in the technical data. The 031-71008-1RFX is rated -65°C ~ 165°C. For applications with defined temperature extremes, the 031-71008-1RFX provides documented thermal performance. Verify the SBC8263 thermal specifications with the manufacturer if operating temperature is a critical design parameter.