Pomona Electronics 2451 BNC Connector Jack — Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 2451 is a BNC connector jack (female socket) rated for 50 ohms impedance, designed for panel mount applications with solder cup termination. This component is active in production and widely used in RF and coaxial cable assemblies. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

2451

Pomona ElectronicsIn Stock: 9122451 Datasheet

Current PartRFQ

BU-P2451

Mueller Electric CoIn Stock: 1182BU-P2451 Datasheet

DirectRFQ

31-203

Amphenol RFIn Stock: 118231-203 Datasheet

Parametric EquivalentRFQ

31-203-RFX

Amphenol RFIn Stock: 222331-203-RFX Datasheet

Parametric EquivalentRFQ

R141404000

Radiall USA, Inc.In Stock: 836R141404000 Datasheet

Parametric EquivalentRFQ

R141404000W

Radiall USA, Inc.In Stock: 877R141404000W Datasheet

Parametric EquivalentRFQ

R141410000

Radiall USA, Inc.In Stock: 1177R141410000 Datasheet

Parametric EquivalentRFQ

R141410000W

Radiall USA, Inc.In Stock: 989R141410000W Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Pomona Electronics 2451 are qualified based on strict equivalence across the following parameters:

• Connector Style: BNC
• Connector Type: Jack, Female Socket
• Impedance: 50 Ohms
• Contact Termination: Solder Cup
• Shield Termination: Solder
• Mounting Type: Panel Mount
• Mounting Feature: Flange
• Fastening Type: Bayonet Lock
• Dielectric Material: Polytetrafluoroethylene (PTFE)
• Body Material: Brass
• Frequency - Max: 4 GHz
• Number of Ports: 1

All identified substitutes maintain these core electrical and mechanical specifications. Variations in center contact material, body finish, center contact plating, and operating temperature ranges are noted in the parameter comparison table but do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with RoHS regulations. The Pomona Electronics 2451, Amphenol RF 31-203, Amphenol RF 31-203-RFX, Radiall USA R141404000, Radiall USA R141404000W, Radiall USA R141410000, and Radiall USA R141410000W are ROHS3 compliant. The Mueller Electric Co BU-P2451 is RoHS compliant.

Selection between substitutes should be based on:

• Availability and lead time requirements
• Procurement source preferences
• Operating temperature range requirements (BU-P2451 supports -70°C ~ 170°C versus -65°C ~ 165°C for other parts)
• Center contact material specifications (Beryllium Copper, Copper, or Phosphor Bronze)
• Center contact plating requirements (Gold or Silver)
• Packaging format (Bulk versus Box)

All parts are electrically and mechanically interchangeable within the specified parameter set.

Frequently Asked Questions (FAQ)

Q: Can BU-P2451 from Mueller Electric Co be used as a direct substitute for Pomona Electronics 2451?

A: Yes. BU-P2451 meets all core electrical and mechanical specifications: BNC connector style, jack female socket configuration, 50 ohms impedance, solder cup termination, panel mount with flange, and bayonet lock fastening. Operating temperature range is -70°C ~ 170°C compared to -65°C ~ 165°C for the Pomona part. Both are RoHS compliant.

Q: What is the difference between Amphenol RF 31-203 and 31-203-RFX?

A: Both parts are electrically and mechanically equivalent. The primary difference is center contact material: 31-203 uses Beryllium Copper with Silver plating, while 31-203-RFX uses Phosphor Bronze with Gold plating. Both support 4 GHz frequency, -65°C ~ 165°C operating temperature, and are ROHS3 or RoHS compliant.

Q: Are Radiall USA R141404000 and R141410000 interchangeable?

A: Yes. Both parts meet all core specifications for BNC jack female socket configuration, 50 ohms impedance, solder cup termination, panel mount flange, and bayonet lock fastening. Both support 4 GHz frequency and -65°C ~ 165°C operating temperature. Both are ROHS3 compliant.

Q: What does the "W" suffix indicate in Radiall part numbers R141404000W and R141410000W?

A: The "W" suffix designates a variant within the Radiall product line. Both R141404000W and R141410000W maintain full electrical and mechanical equivalence to their non-W counterparts and to the Pomona Electronics 2451.

Q: Are there packaging differences between substitute parts?

A: Yes. Pomona Electronics 2451 is supplied in Bulk packaging. Mueller Electric Co BU-P2451 is supplied in Bulk packaging. Amphenol RF 31-203 and 31-203-RFX are supplied in Bulk packaging. Radiall USA parts (R141404000, R141404000W, R141410000, R141410000W) are supplied in Box packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Can these BNC connectors be used in applications requiring extended temperature operation?

A: Most substitute parts operate within -65°C ~ 165°C. The Mueller Electric Co BU-P2451 supports an extended range of -70°C ~ 170°C. Verify application temperature requirements before final part selection.