Equivalent & Substitute Parts for A-1JB-250

Part Overview

The A-1JB-250 is a U.FL (UMCC) AMC Connector Jack with male pin configuration, rated for 50 Ohms impedance and designed for surface mount solder termination. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. The part operates across a frequency range up to 6 GHz and is suitable for RF coaxial connector applications requiring snap-on fastening and surface mount assembly.

Substiute Parts

A-1JB-250

Amphenol RFIn Stock: 883A-1JB-250 Datasheet

Current PartRFQ

A-1JB

Amphenol RFIn Stock: 2819A-1JB Datasheet

Parametric EquivalentRFQ

0734120110

MolexIn Stock: 406550734120110 Datasheet

DirectRFQ

U.FL-R-SMT-1(10)

Hirose Electric Co LtdIn Stock: 22462U.FL-R-SMT-1(10) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A-1JB-250 is determined by strict equivalence across the following critical parameters: connector style (U.FL/UMCC), impedance (50 Ohms), mounting type (surface mount), contact and shield termination method (solder), frequency capability (6 GHz maximum), operating temperature range (-40°C to 90°C), fastening mechanism (snap-on), and mating cycle rating (30 cycles).

The substitute parts are grouped into two categories:

Parametric Equivalent: A-1JB represents a direct functional equivalent from the same manufacturer (Amphenol RF) within the AMC series. This part maintains identical electrical and mechanical specifications with the exception of product status (active versus obsolete) and packaging configuration.

Direct Manufacturer Substitutes: Parts 0734120110 (Molex) and U.FL-R-SMT-1(10) (Hirose Electric Co Ltd) are functionally compatible alternatives from different manufacturers. These parts share the same connector style, impedance, mounting type, termination method, frequency rating, and operating temperature range. The primary distinction is connector type designation (receptacle versus jack configuration) and housing material/finish variations, which do not affect electrical performance in mating applications.

Parameter Comparison

Engineering Selection Recommendations

A-1JB (Amphenol RF): This part is the primary recommended substitute for the obsolete A-1JB-250. It maintains identical electrical and mechanical specifications within the AMC series and carries active product status. The part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Packaging is available in Cut Tape (CT) and Digi-Reel® configurations, supporting both prototype and production volume requirements. Inventory availability is substantially higher (2732 pieces) compared to the original part.

0734120110 (Molex): This part provides functional compatibility as a U.FL (UMCC) connector with 50 Ohm impedance, surface mount solder termination, and 6 GHz frequency capability. The part is active and ROHS3 compliant. The connector type designation differs (receptacle versus jack), but this does not preclude electrical compatibility in mating applications. Body material is specified as phosphor bronze with nickel finish. Voltage rating is 60 V. Inventory availability is high (40645 pieces).

U.FL-R-SMT-1(10) (Hirose Electric Co Ltd): This part offers equivalent electrical performance across all critical parameters including impedance, frequency, operating temperature, and termination method. The part is active and ROHS3 compliant. Body material is phosphor bronze with silver finish. Packaging is Cut Tape (CT). Inventory availability is 22400 pieces.

All three substitute parts satisfy the electrical and mechanical requirements of the A-1JB-250 application. Selection among substitutes should be based on design-specific requirements including connector type compatibility, packaging format, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the A-1JB directly replace the A-1JB-250 in existing designs?

A: Yes. The A-1JB maintains identical electrical and mechanical specifications including connector style, impedance, mounting type, termination method, frequency rating, and operating temperature range. The primary difference is product status (active versus obsolete) and packaging configuration. No design modification is required.

Q: What is the difference between jack and receptacle connector types in these substitutes?

A: The A-1JB-250 and A-1JB are designated as jack connectors with male pins. The Molex 0734120110 and Hirose U.FL-R-SMT-1(10) are designated as receptacle connectors with male pins. In U.FL (UMCC) connector systems, these designations refer to the mechanical interface geometry. Electrical compatibility is maintained when mating jack and receptacle configurations in standard U.FL applications.

Q: Are there voltage rating differences between the main part and substitutes?

A: The A-1JB-250 is rated for 500 V, while the A-1JB, 0734120110, and U.FL-R-SMT-1(10) are rated for 60 V or unspecified. For applications requiring the full 500 V rating, the A-1JB-250 voltage specification must be retained. For standard RF coaxial connector applications operating below 60 V, the substitute parts are suitable.

Q: What packaging options are available for each substitute?

A: A-1JB is available in Cut Tape (CT) and Digi-Reel® packaging. The Molex 0734120110 is available in Cut Tape (CT) and Digi-Reel® packaging. The Hirose U.FL-R-SMT-1(10) is available in Cut Tape (CT) packaging. Selection should align with procurement and assembly requirements.

Q: Do all substitute parts meet current regulatory compliance standards?

A: Yes. All substitute parts (A-1JB, 0734120110, and U.FL-R-SMT-1(10)) are ROHS3 compliant and REACH unaffected. The original A-1JB-250 is RoHS compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the mating cycle rating for these connectors?

A: All parts including the A-1JB-250 and all substitutes are rated for 30 mating cycles. This specification is consistent across all equivalent and substitute options.

Q: Can these parts be used interchangeably in production?

A: The A-1JB is the direct parametric equivalent and can be used interchangeably with the A-1JB-250 without design modification. The Molex 0734120110 and Hirose U.FL-R-SMT-1(10) provide functional equivalence but differ in connector type designation and housing materials. Interchangeability depends on specific application requirements and mating interface design. Engineering evaluation is required for cross-manufacturer substitution in production environments.