SBC9231 BNC Connector Plug 75 Ohm Crimp - Equivalent & Substitute Parts

Part Overview

The SBC9231 is a BNC connector plug manufactured by Winchester Interconnect, designed for coaxial RF applications requiring 75 ohm impedance. This male pin connector features crimp termination for both center contact and shield, with bayonet lock fastening and free hanging (in-line) mounting configuration. The part is currently active in production with 1054 units in stock. Equivalent and substitute parts are identified when component availability changes, supply chain disruptions occur, or design flexibility permits alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

SBC9231

Winchester InterconnectIn Stock: 1082SBC9231 Datasheet

Current PartRFQ

31-71032

Amphenol RFIn Stock: 103131-71032 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBC9231 is permissible with part number 31-71032 (Amphenol RF) based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters (Substitution Basis):

• 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
• Number of Ports: 1
• Voltage Rating: 500 V
• Mating Cycles: 500
• Insertion Loss: 0.2 dB
• Body Material: Brass
• Body Finish: Nickel
• Compliance: RoHS Compliant / ROHS3 Compliant

These parameters define the functional and physical compatibility required for direct substitution in 75 ohm coaxial RF connector applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SBC9231 and 31-71032 are active production parts with full RoHS compliance. The SBC9231 carries RoHS Compliant certification, while the 31-71032 carries ROHS3 Compliant certification, both meeting current environmental standards. Both parts maintain identical electrical performance at the specified 0.2 dB insertion loss and 500 V voltage rating with 500 mating cycles.

The 31-71032 (Amphenol RF) offers extended frequency capability to 4 GHz compared to the SBC9231's 1 GHz maximum, providing additional operational headroom in applications not requiring the full extended frequency range. Both connectors are suitable for Belden 9231 cable group applications and maintain equivalent mechanical interface through bayonet lock fastening.

Selection between these parts should be based on component availability, supply chain requirements, and design specifications. Both parts satisfy the core electrical and mechanical requirements for 75 ohm BNC crimp plug connectors in free hanging (in-line) configurations.

Frequently Asked Questions (FAQ)

Q: Can the 31-71032 directly replace the SBC9231 in existing designs?

A: Yes. Both connectors share identical BNC plug configuration, 75 ohm impedance, crimp termination for center contact and shield, bayonet lock fastening, and free hanging mounting type. Electrical performance is equivalent at 0.2 dB insertion loss and 500 V rating.

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

A: The SBC9231 is rated to 1 GHz maximum frequency, while the 31-71032 is rated to 4 GHz maximum frequency. Both operate within their specified frequency ranges without performance degradation. Selection depends on application frequency requirements.

Q: Are both parts RoHS compliant?

A: Yes. The SBC9231 carries RoHS Compliant certification. The 31-71032 carries ROHS3 Compliant certification. Both meet current environmental and regulatory standards for electronic components.

Q: What cable types are compatible with these connectors?

A: Both connectors are compatible with Belden 9231 cable group. The 31-71032 additionally supports RG-59 Double Braid cable. Crimp termination requires appropriate ferrule and contact components for the selected cable type.

Q: Are the mating cycles and voltage ratings identical?

A: Yes. Both connectors are rated for 500 mating cycles and 500 V voltage rating, providing equivalent mechanical durability and electrical safety margins.

Q: What is the moisture sensitivity level for these parts?

A: Both connectors carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or use.

Q: What packaging is available for each part?

A: The SBC9231 is available in standard packaging. The 31-71032 is supplied in bulk packaging and includes 3 pcs per connector unit (1 Connector, 1 Contact, 1 Ferrule).