Pomona Electronics 2451 BNC Female Socket Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 2451 is a BNC connector jack with female socket configuration, designed for 50-ohm RF applications requiring panel mount installation with solder cup termination. This connector operates across frequencies up to 4 GHz and maintains performance across an operating temperature range of -65°C to 165°C. The part is currently active in production status with 864 units in stock.

Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory constraints, supply chain considerations, or specific manufacturing preferences while maintaining full electrical and mechanical compatibility within the defined parameter specifications.

Substiute Parts

2451#

Pomona ElectronicsIn Stock: 9462451# Datasheet

Current PartRFQ

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 all critical electrical and mechanical parameters. The substitution logic is based on the following key parameters that must match identically:

Mandatory Matching 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
• Frequency - Max: 4 GHz
• Number of Ports: 1
• Operating Temperature: -65°C ~ 165°C
• Dielectric Material: PTFE
• Body Material: Brass
• Body Finish: Nickel
• Features: Extended Insulation
• Housing Color: Silver

All identified substitute parts meet these mandatory parameters. Variations in center contact material (Beryllium Copper versus Phosphor Bronze), center contact plating (Gold versus Silver), and packaging format (Bulk versus Box) do not affect functional equivalence for this connector category and are therefore permitted within the substitution group.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical compatibility with the Pomona Electronics 2451 across the critical parameters that define connector function and interchangeability. Selection among equivalent parts should be based on the following factors:

Compliance and Regulatory Status: All substitute parts are ROHS3 compliant or RoHS compliant, meeting current environmental and hazardous substance restrictions. The Amphenol RF 31-203-RFX carries RoHS compliance designation. The Radiall parts R141404000 and R141410000 are REACH Affected, while the Pomona 2451 and Amphenol RF 31-203 are REACH Unaffected. All parts carry EAR99 ECCN classification and identical HTSUS codes (8536.69.4010).

Packaging Considerations: The Pomona 2451 and Amphenol RF parts (31-203 and 31-203-RFX) are supplied in Bulk packaging. The Radiall parts (R141404000, R141404000W, R141410000, R141410000W) are supplied in Box packaging. Packaging selection depends on procurement and inventory management requirements.

Inventory Availability: Current stock levels vary across the substitute group. The Amphenol RF 31-203-RFX offers the highest inventory at 2118 units. The Radiall R141410000 provides 1153 units, and Amphenol RF 31-203 provides 1151 units. Selection based on immediate availability is supported by these inventory levels.

Center Contact Material Variation: The Amphenol RF 31-203-RFX uses Phosphor Bronze for the center contact, while all other parts in the group use Beryllium Copper. This material difference does not affect electrical performance or mechanical compatibility within the defined parameter specifications.

Center Contact Plating Variation: The Amphenol RF 31-203 uses Silver plating on the center contact, while the Pomona 2451 and all Radiall parts use Gold plating. The Amphenol RF 31-203-RFX also uses Gold plating. Plating selection does not affect functional equivalence for this connector category.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 31-203 be used as a direct replacement for the Pomona Electronics 2451?

A: Yes. The Amphenol RF 31-203 meets all mandatory electrical and mechanical parameters for the Pomona 2451. The difference in center contact plating (Silver versus Gold) does not affect functional compatibility. Both parts are ROHS3 compliant and carry identical impedance, frequency, and temperature specifications.

Q: What is the difference between the Radiall R141404000 and R141410000 models?

A: Both parts are functionally equivalent to the Pomona 2451 across all critical parameters. The primary distinction is in the mounting feature designation: R141404000 is designated as a square flange jack receptacle, while R141410000 is designated as an insulated square flange jack. Both maintain identical electrical performance and mechanical compatibility. The "W" suffix variants (R141404000W and R141410000W) are equivalent to their non-W counterparts.

Q: Does the Amphenol RF 31-203-RFX use different materials than other substitutes?

A: The 31-203-RFX uses Phosphor Bronze for the center contact material, whereas the Pomona 2451 and most other substitutes use Beryllium Copper. This material difference does not affect electrical performance or mechanical compatibility within the defined specifications for this connector category.

Q: Are all substitute parts available in the same packaging format as the Pomona 2451?

A: No. The Pomona 2451 is supplied in Bulk packaging. The Amphenol RF parts (31-203 and 31-203-RFX) are also supplied in Bulk packaging. However, the Radiall parts (R141404000, R141404000W, R141410000, R141410000W) are supplied in Box packaging. Packaging format selection depends on procurement requirements and inventory management practices.

Q: What is the maximum frequency rating for all substitute parts?

A: All substitute parts, including the Pomona 2451, are rated for a maximum frequency of 4 GHz. This specification is identical across the entire substitution group.

Q: Do all substitute parts operate across the same temperature range?

A: Yes. All substitute parts maintain an operating temperature range of -65°C to 165°C, identical to the Pomona 2451. This specification is consistent across all equivalent parts in the substitution group.

Q: Which substitute part offers the highest current inventory availability?

A: The Amphenol RF 31-203-RFX currently has the highest inventory level at 2118 units in stock. This is followed by the Radiall R141410000 with 1153 units and the Amphenol RF 31-203 with 1151 units.

Q: Are there any REACH compliance differences among the substitute parts?

A: Yes. The Pomona 2451 and Amphenol RF 31-203 are designated as REACH Unaffected. The Radiall parts (R141404000, R141404000W, R141410000, R141410000W) are designated as REACH Affected. Applications subject to REACH compliance requirements should account for this distinction when selecting among substitute parts.

Q: What voltage rating applies to these BNC connectors?

A: The Amphenol RF parts (31-203 and 31-203-RFX) and all Radiall parts specify a 500 V voltage rating. The Pomona 2451 does not specify a voltage rating in the provided parameters. The 500 V specification for substitute parts represents the rated electrical performance capability.

Q: Is the center contact plating material critical for connector selection?

A: Center contact plating (Gold versus Silver) does not affect functional equivalence for this connector category. Both plating options provide adequate electrical performance and corrosion resistance. Selection between Gold-plated and Silver-plated variants depends on specific application requirements and cost considerations, not on electrical compatibility.