TE Connectivity 55849-1 Ring Terminal Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 55849-1 is a ring terminal connector designed for 18-22 AWG wire gauges with a 1/4 inch stud connection. This circular terminal features crimp termination, polyolefin insulation with heat shrink, and tin-plated copper ETP contact material. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for applications requiring ring terminal connectors in this specification range.

Substiute Parts

55849-1

TE Connectivity AMP ConnectorsIn Stock: 105055849-1 Datasheet

Current PartRFQ

8-55849-2

TE Connectivity AMP ConnectorsIn Stock: 10778-55849-2 Datasheet

DirectRFQ

0191640004

MolexIn Stock: 286320191640004 Datasheet

DirectRFQ

PH18-14R-Q

Panduit CorpIn Stock: 957PH18-14R-Q Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 55849-1 is determined by strict equivalence across the following critical parameters:

Primary Compatibility Criteria:

• Terminal type must be circular
• Stud size must be 1/4 inch
• Wire gauge range must accommodate 18-22 AWG
• Termination method must be crimp
• Insulation must be heat shrink type
• Contact finish must be tin
• Color must be red
• Mounting configuration must be free hanging (in-line)

Secondary Compliance Criteria:

• RoHS compliance status
• Moisture sensitivity level (MSL 1 or equivalent)
• REACH compliance status

All identified substitute parts meet these primary criteria. Dimensional variations within manufacturing tolerances and minor material composition differences in contact alloys do not preclude substitution when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 8-55849-2 is the primary direct substitute. This part maintains identical specifications to the obsolete 55849-1 across all critical parameters, including wire gauge, stud size, insulation diameter, and overall dimensions. The 8-55849-2 is currently active in production with RoHS compliance and unlimited MSL rating. This part is sourced from the same manufacturer as the original component, ensuring design continuity.

Molex 0191640004 serves as a cross-manufacturer equivalent. This part meets all primary compatibility criteria with identical wire gauge, stud size, and termination method. The Molex part features a serrated termination design and operates within the same MSL 1 rating. Dimensional variations exist in insulation diameter (0.235" versus 0.170") and overall length (1.661" versus 1.468"), which may affect fit in space-constrained applications. This part carries ROHS3 compliance and REACH unaffected status.

Panduit PH18-14R-Q provides an alternative from the Pan-Term® series. This part satisfies all primary compatibility requirements with matching wire gauge, stud size, and crimp termination. The Panduit part features a brazed seam construction and is shorter in overall length (1.240" versus 1.468"). ROHS3 compliance is confirmed; MSL rating is not applicable. This option is suitable for applications where the shorter profile is advantageous.

Selection between active substitutes depends on application-specific requirements regarding dimensional fit, space constraints, and supply chain preferences. All three active alternatives maintain electrical and mechanical compatibility with the original 55849-1 specification.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 8-55849-2 directly replace the obsolete 55849-1?

A: Yes. The 8-55849-2 is dimensionally and electrically identical to the 55849-1 across all specified parameters. Both parts share the same base product number (55849) and maintain identical wire gauge (18-22 AWG), stud size (1/4 inch), insulation diameter (0.170 inch), and overall length (1.468 inches). The primary difference is product status: 8-55849-2 is active in production.

Q: What are the dimensional differences between the Molex 0191640004 and the original TE Connectivity part?

A: The Molex 0191640004 has a larger insulation diameter (0.235 inch versus 0.170 inch) and greater overall length (1.661 inches versus 1.468 inches). The thickness is slightly reduced (0.028 inch versus 0.030 inch). These variations may affect fit in applications with tight spatial constraints or specific connector housings designed for the original dimensions.

Q: Is the Panduit PH18-14R-Q suitable for all applications using the 55849-1?

A: The Panduit part meets all primary electrical and mechanical compatibility criteria. However, its shorter overall length (1.240 inches versus 1.468 inches) may affect compatibility with specific connector housings or assembly configurations. Applications with space constraints may benefit from this shorter profile, while applications requiring the original length profile should use the TE Connectivity 8-55849-2.

Q: Are all substitute parts RoHS compliant?

A: Yes. The TE Connectivity 8-55849-2 is RoHS Compliant. Both the Molex 0191640004 and Panduit PH18-14R-Q are ROHS3 Compliant, which represents a more recent RoHS standard iteration. All parts meet current RoHS requirements.

Q: What is the difference between the packaging of these parts?

A: The original TE Connectivity 55849-1 was supplied in unspecified packaging. The active substitutes are supplied in bulk packaging: TE Connectivity 8-55849-2 (bulk), Molex 0191640004 (bulk), and Panduit PH18-14R-Q (bulk). Bulk packaging is standard for terminal connectors and does not affect electrical or mechanical performance.

Q: Can these parts be used interchangeably in existing assemblies?

A: Interchangeability depends on the specific assembly design. All parts share identical wire gauge (18-22 AWG), stud size (1/4 inch), and crimp termination. The TE Connectivity 8-55849-2 is dimensionally identical to the original and provides direct interchangeability. The Molex and Panduit alternatives are electrically compatible but may require physical fit verification due to dimensional variations in length and insulation diameter.

Q: What is the significance of the serrated termination feature on the Molex part?

A: The serrated termination on the Molex 0191640004 provides enhanced mechanical grip on the wire during the crimp process. This feature does not affect electrical compatibility but may provide improved pull-strength characteristics in applications requiring high mechanical reliability.

Q: Are there any REACH compliance differences between the substitutes?

A: The TE Connectivity 55849-1 and 8-55849-2 are both REACH Unaffected. The Molex 0191640004 is REACH Unaffected. The Panduit PH18-14R-Q is REACH Unaffected. All parts comply with REACH regulations.