Pomona Electronics 5375 SMB Coaxial Connector - Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 5375 is an SMB connector plug with female socket configuration, designed for 50-ohm RF applications. This component features solder termination for the center contact and crimp termination for the shield, supporting frequencies up to 4 GHz. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations where SMB connector functionality is required.

Substiute Parts

5375

Pomona ElectronicsIn Stock: 8645375 Datasheet

Current PartRFQ

131-9403-021

Cinch Connectivity SolutionsIn Stock: 1190131-9403-021 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Cinch Connectivity Solutions 131-9403-021 qualifies as a direct substitute based on the following critical parameters:

Matching Core Specifications:

• Connector style: SMB (identical)
• Connector type: Plug, Female Socket (identical)
• Impedance: 50 Ohms (identical)
• Shield termination: Crimp (identical)
• Mounting type: Free Hanging (In-Line) (identical)
• Frequency maximum: 4 GHz (identical)
• Voltage rating: 335 V (identical)
• Operating temperature range: -65°C to 165°C (identical)
• Dielectric material: PTFE (identical)
• Center contact plating: Gold (identical)

Termination Compatibility: The substitute part 131-9403-021 supports both crimp and solder contact termination, providing functional equivalence to the solder-only termination of the primary part. Cable group compatibility includes RG-161, 174, 179, 187, 188, and 316, encompassing all cable types supported by the Pomona 5375.

Parameter Comparison

Engineering Selection Recommendations

The Cinch Connectivity Solutions 131-9403-021 is the appropriate substitute for the obsolete Pomona Electronics 5375. Both components maintain identical electrical and mechanical specifications across all critical parameters: 50-ohm impedance, SMB connector style, 4 GHz frequency capability, and -65°C to 165°C operating range.

The substitute part offers the advantage of active product status, ensuring continued availability and supply chain reliability. Both components are ROHS3 compliant and carry identical ECCN and HTSUS classifications, supporting regulatory and compliance requirements.

The Cinch part's support for both crimp and solder termination provides operational flexibility while maintaining full compatibility with the solder termination requirement of the original design. The expanded cable group compatibility (addition of RG-161) presents no compatibility concerns for existing applications.

Frequently Asked Questions (FAQ)

Q: Can the Cinch 131-9403-021 directly replace the Pomona 5375 in existing designs?

A: Yes. Both components share identical electrical specifications (50 ohms, 4 GHz maximum frequency, 335 V rating) and mechanical configuration (SMB plug, female socket, free-hanging in-line mounting). The substitute supports solder termination, matching the original part's termination method.

Q: What is the significance of the Cinch part supporting both crimp and solder termination?

A: The substitute's dual termination capability provides design flexibility. For applications requiring solder termination, the Cinch part performs identically to the Pomona original. The additional crimp option does not affect solder-based implementations.

Q: Are there cable compatibility differences between these parts?

A: The Pomona 5375 supports RG-174, 179, 187, 188, and 316 cables. The Cinch 131-9403-021 supports these same cables plus RG-161. Both parts are fully compatible with all cable types specified for the original design.

Q: What compliance certifications apply to the substitute part?

A: The Cinch 131-9403-021 is ROHS3 compliant and REACH affected. Both the original and substitute share identical ECCN (EAR99) and HTSUS (8536.69.4010) classifications.

Q: Does the difference in body material (brass vs. copper alloy) affect electrical performance?

A: No. Both materials provide equivalent electrical conductivity and shielding effectiveness for 50-ohm RF applications. The material difference does not impact impedance, frequency response, or signal integrity within the specified operating parameters.

Q: What is the mating cycle rating for the substitute part?

A: The Cinch 131-9403-021 is rated for 500 mating cycles. The original Pomona part does not specify a mating cycle rating. For applications requiring high-cycle connector engagement, the Cinch specification provides documented performance data.