Amphenol RF 112235-11 BNC Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 112235-11 is a BNC connector jack with female socket configuration, designed for 75-ohm coaxial cable applications. This panel-mount crimp connector operates at frequencies up to 4 GHz and is rated for 500 volts with 500 mating cycles. The part is currently in active product status with 799 units in stock.

Substitute parts become necessary when the primary part number is unavailable, when procurement lead times require alternative sourcing, or when design revisions necessitate component alternatives that maintain electrical and mechanical compatibility within specified parameters.

Substiute Parts

112235-11

Amphenol RFIn Stock: 858112235-11 Datasheet

Current PartRFQ

031-71011

Amphenol RFIn Stock: 919031-71011 Datasheet

Parametric EquivalentRFQ

31-343-RFX

Amphenol RFIn Stock: 89831-343-RFX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 112235-11 are classified based on electrical and mechanical parameter compatibility. The primary substitution criteria are:

Parametric Equivalents (Full Compatibility): Parts that maintain identical electrical specifications including connector style (BNC), connector type (Jack, Female Socket), impedance (75 Ohms), mounting configuration (Panel Mount, Bulkhead - Front Side Nut), termination method (Crimp), frequency rating (4 GHz), voltage rating (500 V), operating temperature range (-65°C ~ 165°C), mating cycles (500), and insertion loss (0.2 dB).

Parametric Alternatives (Conditional Compatibility): Parts that share the same connector style, type, mounting configuration, and termination method but differ in impedance specification. These parts are electrically distinct and require circuit-level evaluation for application suitability.

The Amphenol RF 031-71011 qualifies as a parametric equivalent with identical electrical and mechanical specifications. The Amphenol RF 31-343-RFX is classified as a parametric alternative due to its 50-ohm impedance specification, which differs from the primary part's 75-ohm rating.

Parameter Comparison

Engineering Selection Recommendations

Amphenol RF 031-71011 (Parametric Equivalent): The 031-71011 maintains complete electrical and mechanical compatibility with the 112235-11, sharing identical impedance (75 Ohms), frequency rating (4 GHz), voltage rating (500 V), operating temperature range, and insertion loss specifications. Both parts are ROHS3 compliant and carry MSL 1 rating. However, the 031-71011 carries a product status designation of "Not For New Designs," indicating this part number is in legacy status. For new design implementations, the 112235-11 remains the preferred selection due to its active product status. The 031-71011 is suitable for replacement or repair applications where the original part number is unavailable.

Amphenol RF 31-343-RFX (Parametric Alternative): The 31-343-RFX shares identical mechanical and mounting characteristics with the 112235-11 but operates at 50-ohm impedance rather than 75-ohm impedance. This impedance difference creates electrical incompatibility in applications designed for 75-ohm systems. The 31-343-RFX is appropriate only for applications specifically requiring 50-ohm impedance characteristics. This part maintains active product status and ROHS3 compliance. The dielectric material differs (Polyoxymethylene Acetal versus PTFE), which may affect performance in specific environmental or frequency-dependent applications.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-71011 be used as a direct replacement for the 112235-11?

A: The 031-71011 is electrically and mechanically equivalent to the 112235-11, sharing all critical parameters including 75-ohm impedance, 4 GHz frequency rating, and crimp termination. However, the 031-71011 carries a "Not For New Designs" status. For new applications, the 112235-11 is the specified part. For replacement or repair of existing systems, the 031-71011 provides functional equivalence.

Q: Is the 31-343-RFX compatible with 75-ohm cable systems?

A: The 31-343-RFX is rated for 50-ohm impedance and is not compatible with 75-ohm cable systems. Impedance mismatch between the connector and cable creates signal reflections and insertion loss degradation. The 31-343-RFX is designed for 50-ohm applications only.

Q: What is the significance of the dielectric material difference between the 112235-11 and 31-343-RFX?

A: The 112235-11 uses Polytetrafluoroethylene (PTFE) dielectric material, while the 31-343-RFX uses Polyoxymethylene (POM) Acetal. PTFE provides superior high-frequency performance and temperature stability. The material difference reflects the distinct design specifications for 75-ohm versus 50-ohm applications.

Q: Why is the 031-71011 marked as "Not For New Designs"?

A: The "Not For New Designs" designation indicates that Amphenol RF has transitioned this part number to legacy status. While the part remains functionally equivalent to the 112235-11, new designs should specify the 112235-11 to ensure long-term availability and support. The 031-71011 remains available for replacement and repair applications.

Q: Are all three parts RoHS compliant?

A: The 112235-11 and 031-71011 are ROHS3 compliant. The 31-343-RFX is RoHS compliant. Both compliance levels meet regulatory requirements, with ROHS3 representing the current standard. All three parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What cable types are compatible with the 112235-11?

A: The 112235-11 is compatible with RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, and 9209 cable types. The 031-71011 and 31-343-RFX share the same cable group compatibility.

Q: What is the packaging difference between the 112235-11 and 031-71011?

A: The 112235-11 is packaged with individual connector components (1 Connector, 1 Contact, 1 Ferrule, 1 Lockwasher, 1 Nut, 1 Sleeve). The 031-71011 is supplied in bulk packaging without specified component inclusions. The 31-343-RFX includes 7 component pieces (1 Connector, 1 Contact, 1 Ferrule, 1 Gasket, 1 Insulator, 1 Lockwasher, 1 Nut).