MCX Connector Plug 73003 - Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 73003 is an MCX connector plug designed for 50-ohm RF applications with a male pin configuration and push-on contact termination. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs requiring MCX plug connectivity.

The 73003 operates across a frequency range up to 3 GHz and supports cable groups including RG-178, with a snap-on fastening mechanism suitable for free-hanging inline installations.

Substiute Parts

73003

Pomona ElectronicsIn Stock: 86073003 Datasheet

Current PartRFQ

133-3403-001

Cinch Connectivity SolutionsIn Stock: 15712133-3403-001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73003 is determined by the following core parameters:

• Connector Style & Type: MCX plug with male pin configuration
• Impedance: 50-ohm characteristic impedance
• Mounting Configuration: Free-hanging inline installation with snap-on fastening
• Contact & Shield Termination: Mechanical connection methods compatible with RF signal integrity
• Operating Environment: Temperature and voltage ratings suitable for the application

The substitute part 133-3403-001 (Cinch Connectivity Solutions) meets these core substitution criteria while offering enhanced performance specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The Cinch Connectivity Solutions 133-3403-001 serves as a direct functional substitute for the obsolete Pomona 73003. Both components maintain identical core RF characteristics (MCX plug, 50-ohm impedance, snap-on fastening) and comply with ROHS3 and EAR99 classifications.

The 133-3403-001 is classified as an active product with higher performance margins across frequency (6 GHz vs. 3 GHz), operating temperature (-65°C to 165°C vs. -55°C to 155°C), and voltage rating (335 V vs. 170 V). These enhanced specifications provide greater design flexibility for applications requiring extended environmental or electrical operating ranges.

Contact termination differs between the two parts: the 73003 uses push-on termination while the 133-3403-001 supports crimp or solder termination. Cable group compatibility also expands with the substitute (RG-161, 174, 188, 316 vs. RG-178 for the original).

Frequently Asked Questions (FAQ)

Q: Can the Cinch 133-3403-001 directly replace the Pomona 73003 in existing designs?

A: Yes. Both components share identical MCX plug configuration, 50-ohm impedance, snap-on fastening, and free-hanging inline mounting. The substitute maintains mechanical and electrical compatibility for RF signal transmission.

Q: What is the primary difference in contact termination between these parts?

A: The 73003 uses push-on contact termination, while the 133-3403-001 supports crimp or solder termination. Selection depends on cable preparation and assembly requirements for your application.

Q: Does the higher frequency rating of the 133-3403-001 affect compatibility?

A: No. The 6 GHz maximum frequency of the 133-3403-001 is a performance enhancement that does not compromise compatibility with systems designed for 3 GHz operation. The 50-ohm impedance and RF characteristics remain consistent.

Q: Are there cable group compatibility considerations?

A: The 73003 is specified for RG-178 cable. The 133-3403-001 supports RG-161, 174, 188, and 316 cables. Verify that your cable selection is compatible with the substitute part's supported cable groups.

Q: What is the significance of the different voltage ratings?

A: The 73003 is rated for 170 V while the 133-3403-001 is rated for 335 V. The substitute provides higher voltage margin, beneficial for applications with elevated electrical stress. Both ratings are suitable for standard RF connector applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the Pomona 73003 and Cinch 133-3403-001 are ROHS3 compliant and classified under ECCN EAR99.