Amphenol RF 31-4541-RFX BNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 31-4541-RFX is an active BNC connector plug designed for 50-ohm coaxial cable applications. This male pin connector features solder termination and is rated for operation across -65°C to 165°C with a maximum frequency of 4 GHz. The part is ROHS3 compliant and currently in stock with 851 pieces available. Equivalent and substitute parts are identified to provide alternative sourcing options for applications requiring compatible BNC plug connectors with matching electrical and mechanical specifications.

Substiute Parts

31-4541-RFX

Amphenol RFIn Stock: 92931-4541-RFX Datasheet

Current PartRFQ

31-12

Amphenol RFIn Stock: 116031-12 Datasheet

Parametric EquivalentRFQ

31-212

Amphenol RFIn Stock: 159631-212 Datasheet

Parametric EquivalentRFQ

31-212-RFX

Amphenol RFIn Stock: 110731-212-RFX Datasheet

Parametric EquivalentRFQ

5285

Pomona ElectronicsIn Stock: 6875285 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 31-4541-RFX are classified into two categories based on parametric equivalence and compatibility:

Parametric Equivalents (Direct Substitutes): Parts 31-12, 31-212, and 31-212-RFX are parametric equivalents sharing all critical electrical specifications: BNC connector style, male pin type, 50-ohm impedance, solder contact termination, clamp shield termination, free-hanging mounting, bayonet lock fastening, 4 GHz maximum frequency, -65°C to 165°C operating temperature, 500 V voltage rating, and 0.2 dB insertion loss. These parts differ in dielectric material composition, center contact plating, and included accessory components, but maintain full functional compatibility for standard BNC plug applications.

Similar Part (Functional Alternative): Part 5285 from Pomona Electronics is classified as a similar part rather than a direct parametric equivalent. While it maintains BNC connector style, male pin type, 50-ohm impedance, 4 GHz frequency rating, and 500 V voltage rating, it differs in contact termination method (crimp or solder versus solder-only), shield termination (crimp versus clamp), and compatible cable groups. This part is suitable for applications where crimp termination is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Parametric Equivalents):

Parts 31-12, 31-212, and 31-212-RFX are suitable for direct substitution in applications currently using the 31-4541-RFX. All three parts maintain identical electrical performance specifications and are ROHS compliant. Selection among these three should be based on:

• 31-12: Offers highest inventory availability (1144 pieces) with silver center contact plating and PTFE dielectric material. Includes seven accessory components.

• 31-212: Provides 1501 pieces in stock with silver center contact plating and PTFE dielectric material. Includes seven accessory components. RoHS compliant status confirmed.

• 31-212-RFX: Maintains 1036 pieces in inventory with gold center contact plating and PTFE dielectric material. Includes six accessory components. RoHS compliant status confirmed.

For Functional Alternative (Similar Part):

Part 5285 from Pomona Electronics is suitable only for applications where crimp termination is acceptable as an alternative to solder termination. This part is not recommended as a direct replacement for solder-only applications. The crimp shield termination differs from the clamp termination of the main part. Inventory availability is 647 pieces.

Frequently Asked Questions (FAQ)

Q: Can I use part 31-12 as a direct replacement for 31-4541-RFX?

A: Yes. Part 31-12 is a parametric equivalent with identical electrical specifications including 50-ohm impedance, 4 GHz maximum frequency, 500 V voltage rating, 0.2 dB insertion loss, and 500 mating cycles. Both are ROHS3 compliant and feature solder contact termination with clamp shield termination.

Q: What is the difference between 31-212-RFX and 31-212?

A: Both parts are parametric equivalents with identical electrical specifications. The primary differences are center contact plating (gold in 31-212-RFX versus silver in 31-212) and included accessory components (six pieces in 31-212-RFX versus seven pieces in 31-212). Both are RoHS compliant.

Q: Is Pomona Electronics part 5285 compatible with my application?

A: Part 5285 is compatible only if your application accepts crimp termination as an alternative to solder termination. This part features crimp contact termination and crimp shield termination, differing from the solder and clamp termination of the 31-4541-RFX. Additionally, 5285 is compatible with RG-58 cable groups rather than the RG-59 cable groups specified for the main part.

Q: What cable groups are compatible with the 31-4541-RFX and its parametric equivalents?

A: All parametric equivalent parts (31-12, 31-212, 31-212-RFX) are compatible with RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, and 9209 cable groups.

Q: Are all substitute parts ROHS compliant?

A: Yes. The 31-4541-RFX is ROHS3 compliant. Parametric equivalents 31-12 and 5285 are ROHS3 compliant. Parts 31-212 and 31-212-RFX are RoHS compliant. All parts meet regulatory compliance requirements.

Q: What is the operating temperature range for these connectors?

A: The 31-4541-RFX and parametric equivalents (31-12, 31-212, 31-212-RFX) operate across -65°C to 165°C. Operating temperature is not specified for part 5285.