TE Connectivity AMP Connectors 413985-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 413985-6 is an SMB connector plug with female socket configuration designed for 50-ohm RF applications. This coaxial connector is rated for frequencies up to 4 GHz and features crimp or solder termination for cable attachment. The part is classified as obsolete, making identification of active equivalent components essential for ongoing procurement and system maintenance. Substitute parts must maintain electrical and mechanical compatibility across all critical RF parameters to ensure signal integrity and system performance.

Substiute Parts

413985-6

TE Connectivity AMP ConnectorsIn Stock: 1024413985-6 Datasheet

Current PartRFQ

903-371P-51S

Amphenol RFIn Stock: 818903-371P-51S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 413985-6 is based on strict electrical and mechanical parameter matching within the SMB coaxial connector category. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Connector style (SMB) and type (Plug, Female Socket)
• Impedance specification (50 Ohms)
• Contact and shield termination methods (Crimp or Solder / Crimp)
• Maximum frequency rating (4 GHz minimum)
• Mounting configuration (Free Hanging In-Line)
• Compatible cable groups (RG-178, 196)
• Fastening mechanism (Snap-On)
• Operating temperature range (-65°C ~ 165°C minimum)
• Voltage rating (335 V minimum)
• Insertion loss performance (0.3 dB)
• Mating cycle durability (500 cycles minimum)

The Amphenol RF 903-371P-51S meets all critical electrical and mechanical parameters required for direct substitution. Both connectors share identical SMB configuration, 50-ohm impedance, crimp/solder termination capability, frequency rating, temperature range, and RF performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Amphenol RF 903-371P-51S is the direct equivalent substitute for the obsolete TE Connectivity 413985-6. Selection of this substitute is supported by the following factors:

Product Status Consideration: The TE Connectivity 413985-6 is classified as obsolete, while the Amphenol RF 903-371P-51S maintains active product status. This transition ensures continued availability and supply chain reliability for new designs and system maintenance.

Compliance and Certification: Both components maintain equivalent regulatory compliance. The TE Connectivity part carries RoHS compliance certification, while the Amphenol RF substitute carries ROHS3 compliance, representing an enhanced compliance standard. Both components are REACH Affected and classified under ECCN EAR99 with identical HTSUS coding (8536.69.4010).

Electrical and Mechanical Equivalence: All critical RF parameters, termination methods, impedance specifications, frequency ratings, temperature ranges, and voltage ratings are identical between the two components. The connectors are mechanically and electrically interchangeable for 50-ohm SMB applications.

Packaging and Inclusion Differences: The Amphenol RF 903-371P-51S includes five component pieces (connector, contact, ferrule, insulator, rear body) compared to three pieces in the TE Connectivity part. This expanded inclusion set provides additional assembly flexibility without affecting core connector functionality.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 903-371P-51S be used as a direct replacement for the TE Connectivity 413985-6?

A: Yes. Both connectors share identical SMB configuration, 50-ohm impedance, crimp/solder termination capability, frequency rating, operating temperature range, voltage rating, and RF performance specifications. The connectors are mechanically and electrically interchangeable.

Q: What is the primary reason for substitution?

A: The TE Connectivity 413985-6 is classified as obsolete. The Amphenol RF 903-371P-51S is an active product with equivalent specifications, ensuring continued component availability and supply chain continuity.

Q: Are there differences in the included components?

A: The Amphenol RF 903-371P-51S includes five pieces (connector, contact, ferrule, insulator, rear body) while the TE Connectivity part includes three pieces (connector, contact, ferrule). Both configurations support the same termination and assembly methods.

Q: Do both connectors support the same cable types?

A: Yes. Both connectors are compatible with RG-178 and RG-196 cable groups and support identical crimp or solder termination methods.

Q: Are there compliance differences between the two parts?

A: Both components maintain equivalent regulatory compliance. The TE Connectivity part carries RoHS compliance, while the Amphenol RF substitute carries ROHS3 compliance, representing an enhanced standard. Both are REACH Affected with identical ECCN and HTSUS classifications.

Q: What is the maximum frequency rating for both connectors?

A: Both the TE Connectivity 413985-6 and Amphenol RF 903-371P-51S are rated for maximum frequencies up to 4 GHz.

Q: Are the operating temperature ranges identical?

A: Yes. Both connectors operate across the identical temperature range of -65°C to 165°C.

Q: What is the insertion loss specification?

A: Both connectors specify 0.3 dB insertion loss at rated frequency.