TE Connectivity AMP Connectors 55557-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 55557-4 is a 10 Pin Screw Terminal with Power Tap configuration, designed for through-hole PCB mounting with 6-32 screw termination. This component features a cover and extended height design with tin-lead contact finish on copper conductors and polyamide nylon insulation.

The 55557-4 carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and maintenance requirements for systems utilizing this terminal configuration.

Substiute Parts

55557-4

TE Connectivity AMP ConnectorsIn Stock: 107055557-4 Datasheet

Current PartRFQ

5055557-4

TE Connectivity AMP ConnectorsIn Stock: 401825055557-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 55557-4 is based on alignment of the following critical parameters:

Mandatory Matching Parameters:

• Screw size: 6-32
• Pin count: 10 pins
• Mounting configuration: Through hole PCB mounting
• Terminal type: Screw Terminal, Power Tap
• Insulation material: Polyamide (PA), Nylon
• Contact material: Copper or Copper Alloy

Acceptable Variations:

• Contact finish: Tin-lead (original) to Tin (substitute)
• Termination method: Solder to Press-Fit
• Screw material specification: Steel in substitute versus unspecified in original
• Features: Extended height (original) to standard height (substitute)

The substitute part 5055557-4 maintains functional and mechanical compatibility while offering improved availability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 5055557-4 serves as the direct substitute for the obsolete 55557-4 based on the following engineering criteria:

Product Status: The 5055557-4 maintains Active product status with confirmed inventory availability of 40,096 pieces, compared to the Obsolete status of the original part with limited stock of 1,020 pieces.

Regulatory Compliance: The 5055557-4 is ROHS3 Compliant and REACH Unaffected, providing compliance with current environmental and regulatory standards. The original 55557-4 carries Not Applicable and Vendor Undefined status respectively.

Functional Equivalence: Both parts share identical screw size (6-32), pin count (10), mounting type (through hole), terminal type (screw terminal power tap), and insulation material (polyamide nylon). These parameters ensure mechanical and electrical compatibility in PCB applications.

Termination Compatibility: The transition from solder termination to press-fit termination in the substitute part represents a manufacturing process improvement while maintaining electrical performance. Both termination methods achieve equivalent connection reliability for power tap applications.

Contact Material: The copper alloy contact material in the 5055557-4 provides equivalent or superior electrical conductivity and corrosion resistance compared to the copper contacts in the original part.

Frequently Asked Questions (FAQ)

Q: Can the 5055557-4 be used as a direct replacement for the 55557-4 in existing PCB designs?

A: Yes. Both parts share identical screw size (6-32), pin count (10), through-hole mounting configuration, and polyamide nylon insulation. The substitute part maintains functional and mechanical compatibility for power tap screw terminal applications.

Q: What is the difference between solder and press-fit termination methods?

A: The original 55557-4 uses solder termination, requiring thermal attachment to PCB pads. The 5055557-4 uses press-fit termination, which mechanically inserts into PCB holes without soldering. Both methods achieve equivalent electrical connection reliability for this terminal type.

Q: Does the contact finish change from tin-lead to tin affect performance?

A: No. Tin contact finish in the 5055557-4 provides equivalent electrical conductivity and corrosion resistance for power tap applications. The change reflects modern manufacturing standards and environmental compliance.

Q: What is the current rating for the 5055557-4?

A: The 5055557-4 is rated for 25 amperes. The original 55557-4 does not specify a current rating in available documentation.

Q: Are there packaging differences between the two parts?

A: The original 55557-4 packaging is unspecified. The 5055557-4 is supplied in box packaging with 40,096 pieces in stock, providing standardized handling and storage.

Q: Does the substitute part meet current environmental regulations?

A: Yes. The 5055557-4 is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. The original part carries Not Applicable and Vendor Undefined status.

Q: What is the difference in physical height between the parts?

A: The original 55557-4 features extended height design. The 5055557-4 features standard height design. Both maintain identical screw size, pin count, and through-hole mounting compatibility.