TE Connectivity AMP Connectors 447648-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 447648-3 is an SMA Connector Jack, Female Socket rated for 50 Ohms impedance with free hanging (in-line) crimp termination. This coaxial RF connector is designed for applications requiring threaded fastening and operates at frequencies up to 12.4 GHz. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

447648-3

TE Connectivity AMP ConnectorsIn Stock: 1095447648-3 Datasheet

Current PartRFQ

5447648-3

TE Connectivity AMP ConnectorsIn Stock: 11575447648-3 Datasheet

DirectRFQ

72954

Pomona ElectronicsIn Stock: 130972954 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of coaxial RF connectors is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish valid substitution relationships for the 447648-3:

Primary Substitution Criteria:

• Connector Style: SMA (exact match required)
• Connector Type: Jack, Female Socket (exact match required)
• Impedance: 50 Ohms (exact match required)
• Mounting Type: Free Hanging (In-Line) (exact match required)
• Fastening Type: Threaded (exact match required)
• Frequency - Max: 12.4 GHz (exact match required)
• Cable Group: RG-174, 188, 316 (exact match required)
• Contact Termination: Crimp or Crimp/Solder combination (compatible)
• Shield Termination: Crimp (exact match required)

Parts meeting all primary criteria are classified as direct equivalents. Variations in secondary parameters such as body finish, housing color, or compliance certifications do not affect functional substitution when primary electrical and mechanical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (TE Connectivity 5447648-3):

The 5447648-3 is a direct functional equivalent to the 447648-3. Both parts share identical electrical and mechanical specifications across all primary substitution criteria. The 5447648-3 offers improved compliance status, meeting RoHS Compliant and REACH Affected requirements, compared to the non-compliant status of the original part. Selection of the 5447648-3 is appropriate for applications where regulatory compliance is required or preferred, while maintaining full electrical and mechanical compatibility.

Alternative Equivalent (Pomona Electronics 72954):

The Pomona Electronics 72954 meets all primary electrical and mechanical substitution criteria and is classified as an active product. This part provides an alternative source from a different manufacturer, offering supply chain diversification. The 72954 supports both crimp and solder contact termination options, providing additional flexibility in assembly methods. The part achieves ROHS3 Compliant and REACH Unaffected status, meeting current regulatory requirements. Operating temperature specification of -65°C to 165°C and voltage rating of 375 V are provided for this part. Selection of the 72954 is appropriate for new designs, production continuity, or applications requiring multi-source component availability.

Compliance Considerations:

For applications subject to RoHS or REACH regulations, the 5447648-3 or 72954 are required. The original 447648-3 is not suitable for regulated environments. For legacy system maintenance where the original part specification must be preserved, the 447648-3 remains available in inventory.

Frequently Asked Questions (FAQ)

Q: Can the 5447648-3 be used as a direct replacement for the 447648-3?

A: Yes. The 5447648-3 is a direct functional equivalent. All electrical and mechanical parameters are identical, including impedance, frequency rating, connector type, termination method, and cable compatibility. The parts are mechanically and electrically interchangeable.

Q: What is the difference between the 447648-3 and 5447648-3?

A: The primary differences are compliance certifications and product status. The 5447648-3 is RoHS Compliant and REACH Affected, while the 447648-3 is RoHS non-compliant with undefined REACH status. Both parts are classified as obsolete. Functionally, they are equivalent.

Q: Can the Pomona Electronics 72954 replace the TE Connectivity 447648-3?

A: Yes. The 72954 meets all primary electrical and mechanical substitution criteria. It is a different manufacturer source but provides equivalent performance. The 72954 is an active product, offering better long-term availability compared to the obsolete TE Connectivity parts.

Q: What are the key parameters that determine if a connector can substitute for the 447648-3?

A: The critical parameters are: SMA connector style, Jack Female Socket type, 50 Ohm impedance, free hanging in-line mounting, threaded fastening, 12.4 GHz maximum frequency, RG-174/188/316 cable compatibility, crimp shield termination, and 500 mating cycles. All substitute parts must match these specifications exactly.

Q: Does the contact termination method affect substitution?

A: The 447648-3 specifies crimp termination. The 5447648-3 also specifies crimp termination. The 72954 supports both crimp and solder termination. Crimp termination is compatible across all three parts. If solder termination is required, only the 72954 provides this option.

Q: Are there packaging differences between these parts?

A: The 447648-3 packaging is not specified. The 5447648-3 and 72954 are supplied in bulk packaging. Packaging differences do not affect electrical or mechanical compatibility.

Q: Which part should be selected for new designs?

A: The Pomona Electronics 72954 is recommended for new designs. It is an active product with current regulatory compliance (ROHS3 Compliant, REACH Unaffected), ensuring long-term availability and support. The TE Connectivity parts are obsolete.

Q: What is the insertion loss specification for these connectors?

A: The 447648-3 specifies 0.3 dB insertion loss. The 5447648-3 and 72954 do not provide insertion loss specifications in the available data.

Q: Are these connectors suitable for high-frequency applications?

A: Yes. All three parts are rated for frequencies up to 12.4 GHz, making them suitable for RF and microwave applications within this frequency range.