RFB-1150-1 Equivalent & Substitute Parts

Part Overview

The RFB-1150-1 is an active BNC male terminator coax connector plug manufactured by RF Industries, designed for 50 ohm RF applications with a maximum frequency rating of 1.5 GHz. This connector is used to terminate coaxial transmission lines in RF systems where impedance matching and signal integrity are required. The part is RoHS3 compliant and carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling. Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers while maintaining critical electrical and mechanical parameters within acceptable tolerances for the intended application.

Substiute Parts

RFB-1150-1

RF IndustriesIn Stock: 741RFB-1150-1 Datasheet

Current PartRFQ

000-35650-51

Amphenol RFIn Stock: 1046000-35650-51 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RFB-1150-1 is based on functional equivalence within the BNC male terminator connector category. The primary substitute identified is the Amphenol RF part number 000-35650-51. Substitution logic is determined by the following critical parameters:

Connector Style and Type: Both parts are BNC male plug terminators, establishing functional compatibility at the mechanical interface level.

Impedance Tolerance: The RFB-1150-1 operates at 50 ohms, while the substitute 000-35650-51 operates at 51 ohms. This 1 ohm difference falls within standard RF connector impedance tolerances and does not preclude substitution in applications where the system impedance specification allows for this variance.

Frequency Rating: The RFB-1150-1 is rated to 1.5 GHz maximum frequency. The substitute part is rated to 4 GHz, providing superior frequency performance and backward compatibility with the original part's operating range.

Mounting Configuration: Both parts feature free hanging, cap-style mounting, ensuring mechanical interchangeability.

Contact and Finish Materials: Both parts utilize brass contacts with gold finish, maintaining electrical conductivity and corrosion resistance characteristics.

Compliance and Environmental: Both parts are RoHS3 compliant and carry MSL 1 ratings, confirming equivalent environmental and regulatory status.

Parameter Comparison

Engineering Selection Recommendations

Primary Application Continuity: The RFB-1150-1 remains the specified part for applications where RF Industries supply chain preference, existing inventory management, or design documentation explicitly requires this manufacturer.

Substitute Selection Criteria: The Amphenol RF 000-35650-51 is electrically and mechanically compatible for applications operating at or below 1.5 GHz. Selection of this substitute is appropriate when:

Supply availability of the RFB-1150-1 is constrained and the Amphenol RF part is available in required quantities.

System impedance specifications permit operation at 51 ohms, or the application includes impedance matching networks that accommodate this tolerance.

The higher frequency rating of the 000-35650-51 (4 GHz) provides performance margin for future system upgrades or multi-band applications.

Compliance Verification: Both parts maintain identical RoHS3 compliance and MSL 1 ratings, confirming regulatory equivalence for applications subject to environmental and hazardous substance restrictions.

Material Considerations: The substitute part features a brass body and PTFE dielectric, compared to the original zinc die cast body and POM dielectric. These material differences do not affect functional performance within the specified frequency and impedance parameters but may influence mechanical durability and thermal characteristics in specific environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 000-35650-51 be used as a direct replacement for the RFB-1150-1 in all applications?

A: The 000-35650-51 is mechanically and electrically compatible for applications operating at or below 1.5 GHz. The 1 ohm impedance difference (51 ohms versus 50 ohms) is within standard RF connector tolerances. Compatibility depends on whether the system impedance specification allows for this variance. Applications with strict 50 ohm impedance requirements should confirm system-level tolerance specifications before substitution.

Q: What is the significance of the frequency rating difference between these parts?

A: The RFB-1150-1 is rated to 1.5 GHz maximum frequency, while the 000-35650-51 is rated to 4 GHz. The substitute part's higher frequency rating indicates superior performance capability and provides operational margin. For applications operating below 1.5 GHz, both parts perform equivalently. The higher rating of the substitute does not introduce incompatibility with lower frequency systems.

Q: Are there differences in dielectric material between these connectors?

A: Yes. The RFB-1150-1 uses polyoxymethylene (POM) dielectric, while the 000-35650-51 uses polytetrafluoroethylene (PTFE) dielectric. PTFE offers superior high-frequency performance and lower dielectric loss. For applications below 1.5 GHz, both materials perform adequately. PTFE is preferred in high-frequency or precision impedance-critical applications.

Q: Do both parts meet the same environmental and regulatory standards?

A: Yes. Both the RFB-1150-1 and 000-35650-51 are RoHS3 compliant and carry MSL 1 (Unlimited) ratings. Both are classified under ECCN EAR99 for export control purposes. Environmental and regulatory compliance is equivalent between the two parts.

Q: What is the difference between the body materials used in these connectors?

A: The RFB-1150-1 features a zinc die cast body, while the 000-35650-51 uses a brass body. Brass provides superior electrical conductivity and corrosion resistance compared to zinc die cast. For RF terminator applications, the brass body of the substitute part offers enhanced durability and consistent electrical performance over extended operational life.

Q: Can these parts be used interchangeably in existing designs without modification?

A: Mechanical interchangeability is confirmed due to identical BNC male plug configuration and free hanging, cap-style mounting. Electrical interchangeability requires verification that the system impedance specification accommodates the 51 ohm rating of the substitute part. No design modifications are required for mechanical integration, but system-level impedance analysis should be performed before substitution in impedance-critical applications.