UG-290/U(42) Equivalent & Substitute Parts

Part Overview

The UG-290/U(42) is a coaxial connector manufactured by Hirose Electric Co., Ltd., classified as an RF coaxial connector. This component is currently listed as obsolete, which necessitates identification of functionally equivalent active alternatives for ongoing system maintenance and new designs. The original part remains available in inventory (724 pcs), but sourcing new stock from the original manufacturer is no longer viable due to product discontinuation.

Substiute Parts

UG-290/U(42)

Hirose Electric Co., Ltd.In Stock: 736UG-290/U(42) Datasheet

Current PartRFQ

31-203-RFX

Amphenol RFIn Stock: 222331-203-RFX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 31-203-RFX (Amphenol RF) qualifies as an equivalent based on the following criteria derived from provided specifications:

Functional Category Match: Both components are classified as coaxial connectors (RF), establishing the primary functional equivalence.

Connector Interface: The 31-203-RFX is specified as a BNC connector jack with female socket configuration, providing the standard RF interface required for coaxial connector applications.

Electrical Performance: The substitute part operates at 50 Ohms impedance with a maximum frequency rating of 4 GHz, meeting standard RF coaxial connector electrical requirements.

Termination Method: Solder cup termination on the 31-203-RFX provides direct compatibility with solder-based circuit integration typical of RF connector applications.

Compliance Status: The 31-203-RFX is actively manufactured and RoHS compliant, addressing regulatory and supply chain continuity concerns associated with the obsolete UG-290/U(42).

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: The 31-203-RFX is the designated manufacturer-recommended substitute for the UG-290/U(42). This substitution is supported by active product status and continuous manufacturing availability from Amphenol RF.

Compliance Considerations: The 31-203-RFX carries RoHS Compliant certification, addressing regulatory requirements for new designs and systems subject to environmental compliance mandates. The original UG-290/U(42) compliance status is not specified in available documentation.

Supply Chain Continuity: With 2118 units in current inventory and active manufacturing status, the 31-203-RFX provides assured long-term availability compared to the obsolete UG-290/U(42), which will eventually exhaust existing stock.

Electrical Specifications: The 31-203-RFX provides documented electrical parameters (50 Ohms impedance, 4 GHz maximum frequency, 500 V voltage rating) suitable for standard RF coaxial connector applications. These specifications establish functional equivalence for typical RF circuit integration.

Frequently Asked Questions (FAQ)

Q: Why is the UG-290/U(42) being phased out? A: The UG-290/U(42) is classified as obsolete by the manufacturer, indicating end-of-life status. No new production is available, and existing inventory will eventually deplete.

Q: Is the 31-203-RFX a direct mechanical replacement? A: Both components are coaxial RF connectors with solder termination. Mechanical compatibility depends on specific circuit board layout and connector mounting requirements not detailed in the provided specifications. Physical dimensions and mounting interface should be verified against your application requirements.

Q: What are the key electrical differences between these parts? A: The 31-203-RFX specifies 50 Ohms impedance, 4 GHz maximum frequency, and 500 V voltage rating. The UG-290/U(42) electrical specifications are not provided in available documentation. Confirmation of electrical compatibility with your application is necessary.

Q: Does the 31-203-RFX meet current regulatory requirements? A: Yes, the 31-203-RFX is RoHS Compliant, meeting current environmental and regulatory standards for electronic components in most jurisdictions.

Q: What is the mating cycle rating for the substitute part? A: The 31-203-RFX is rated for 500 mating cycles, indicating durability for applications requiring repeated connector engagement and disengagement.

Q: Are there any packaging differences? A: The UG-290/U(42) packaging is not specified. The 31-203-RFX is supplied in bulk packaging, suitable for manufacturing and assembly operations.