SBC9221 BNC Connector Plug 75 Ohm Crimp - Equivalent & Substitute Parts

Part Overview

The SBC9221 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 contact and shield, with a bayonet lock fastening mechanism. The connector is rated for frequencies up to 1 GHz and operates at 500 V with an insertion loss of 0.2 dB.

The SBC9221 maintains Active product status and is RoHS Compliant. Substitute parts become necessary when inventory constraints occur, when design flexibility is required across multiple suppliers, or when specific performance enhancements are needed within compatible parameter ranges.

Substiute Parts

SBC9221

Winchester InterconnectIn Stock: 1101SBC9221 Datasheet

Current PartRFQ

112135

Amphenol RFIn Stock: 1300112135 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SBC9221 is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

• Connector Style: BNC (required match)
• Connector Type: Plug, Male Pin (required match)
• Impedance: 75 Ohms (required match)
• Contact Termination: Crimp (required match)
• Shield Termination: Crimp (required match)
• Mounting Type: Free Hanging (In-Line) (required match)
• Fastening Type: Bayonet Lock (required match)

Compatible Cable Groups: The SBC9221 is compatible with RG-179 and Belden 9221 cable groups. Substitute parts may support extended cable compatibility within the 75-ohm coaxial family.

Compliance Requirements: All substitute parts must maintain RoHS compliance status to ensure regulatory alignment with the original component.

The Amphenol RF part number 112135 qualifies as a functional substitute based on matching all critical parameters while offering enhanced frequency capability (2 GHz versus 1 GHz) and extended cable group support.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (SBC9221): The SBC9221 maintains Active product status and is recommended for new designs requiring 75-ohm BNC crimp connectors with 1 GHz frequency capability. This component is RoHS Compliant and carries full manufacturing support from Winchester Interconnect.

Substitute Component (112135): The Amphenol RF 112135 qualifies as a functional equivalent based on matching all critical electrical and mechanical parameters. However, this part carries a "Not For New Designs" status, indicating it is suitable only for legacy system support, repair applications, or inventory supplementation of existing designs.

The 112135 offers extended frequency capability (2 GHz) and broader cable group compatibility (RG-179, 179A, 179B, 187, 187A, Belden 9221, M17/94-RG179), which may provide performance advantages in applications operating below its rated frequency. The part includes assembly components (connector, contact, ferrule, sleeve) and features gold-plated center contacts with polyoxymethylene dielectric material.

Compliance Consideration: Both components meet RoHS requirements. The 112135 carries ROHS3 Compliant status and is REACH Affected, requiring verification of REACH compliance requirements for specific end-use applications.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 112135 be used as a direct replacement for the SBC9221?

A: The 112135 is electrically and mechanically compatible with the SBC9221 for applications operating at or below 1 GHz. Both connectors share identical impedance (75 Ohms), termination method (crimp), mounting configuration (free hanging), and fastening mechanism (bayonet lock). However, the 112135 carries "Not For New Designs" status, restricting its use to legacy support and repair applications.

Q: What cable types are compatible with each connector?

A: The SBC9221 is specified for RG-179 and Belden 9221 cables. The 112135 supports an extended cable group including RG-179, 179A, 179B, 187, 187A, Belden 9221, and M17/94-RG179. Both connectors are 75-ohm impedance matched and suitable for these cable families.

Q: Does the higher frequency rating of the 112135 (2 GHz vs. 1 GHz) provide any advantage?

A: The 112135's 2 GHz frequency rating exceeds the SBC9221's 1 GHz specification. In applications operating below 1 GHz, both connectors perform identically. The higher frequency rating of the 112135 does not enhance performance in lower-frequency applications but indicates broader design flexibility for future system upgrades.

Q: Are there packaging differences between these connectors?

A: The SBC9221 packaging is not specified in available documentation. The 112135 is supplied in bag packaging and includes four assembly components: connector body, contact, ferrule, and sleeve. Verify packaging requirements for your assembly process.

Q: What is the significance of the gold plating on the 112135 center contact?

A: The 112135 features gold-plated center contacts, while the SBC9221 center contact plating is not specified. Gold plating provides enhanced corrosion resistance and improved contact reliability in high-cycle mating applications. Both connectors are rated for 500 mating cycles.

Q: Are both connectors suitable for weatherproof applications?

A: The SBC9221 is rated as weatherproof. The 112135 ingress protection rating is not specified in available documentation. For applications requiring weatherproof performance, verify the 112135's environmental sealing specifications with the manufacturer.

Q: What is the insertion loss difference between these connectors?

A: The SBC9221 specifies 0.2 dB insertion loss. The 112135 insertion loss is not provided in available documentation. For applications with strict insertion loss requirements, contact the manufacturer for 112135 insertion loss specifications.