TE Connectivity AMP Connectors 55558-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 55558-4 is a 10 Pin Screw Terminal Power Tap with 6-32 screw size, designed for through-hole PCB mounting. This component features solder termination and tin-lead contact finish on copper conductors. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for new production and field service applications.

Substiute Parts

55558-4

TE Connectivity AMP ConnectorsIn Stock: 87455558-4 Datasheet

Current PartRFQ

5055558-4

TE Connectivity AMP ConnectorsIn Stock: 30535055558-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 55558-4 is based on strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: TE Connectivity AMP Connectors
• Terminal Type: Screw Terminal, Power Tap
• Screw Size: 6-32
• Number of Pins: 10
• Mounting Type: Through Hole
• Contact Material: Copper

Allowed Variations:

• Termination method (Solder to Press-Fit)
• Contact finish (Tin-Lead to Tin)
• Product status (Obsolete to Active)
• RoHS compliance status
• Packaging configuration

The substitute part 5055558-4 maintains functional and mechanical compatibility while offering improved regulatory compliance and active production status.

Parameter Comparison

Engineering Selection Recommendations

The 5055558-4 serves as the direct active equivalent to the obsolete 55558-4. Selection of the substitute part is justified on the following engineering and compliance grounds:

Product Status: The 5055558-4 maintains active production status, ensuring long-term component availability and supply chain continuity compared to the obsolete 55558-4.

Regulatory Compliance: The 5055558-4 is RoHS Compliant and REACH Unaffected, meeting current environmental and hazardous substance regulations. The original 55558-4 is RoHS non-compliant and REACH Affected, presenting regulatory constraints for new designs and applications subject to these directives.

Functional Equivalence: Both parts share identical mechanical and electrical specifications across terminal type, screw size, pin count, mounting configuration, and contact material. The substitute accommodates a 25 A current rating and operates with press-fit termination, providing equivalent or enhanced performance characteristics.

Packaging and Inventory: The 5055558-4 is available in bulk packaging with significantly higher inventory levels (2999 Pcs), supporting production scalability and reducing lead time risk.

Frequently Asked Questions (FAQ)

Q: Can the 5055558-4 be used as a direct replacement for the 55558-4 in existing designs?

A: Yes. The 5055558-4 maintains identical mechanical and electrical specifications across all critical parameters: 6-32 screw size, 10-pin configuration, through-hole mounting, and copper contact material. The substitute is functionally equivalent for PCB integration and power distribution applications.

Q: What is the difference between solder termination (55558-4) and press-fit termination (5055558-4)?

A: Solder termination requires thermal bonding of the component lead to the PCB pad during reflow or wave soldering. Press-fit termination uses mechanical insertion force to establish contact with the PCB pad. Both methods provide reliable electrical connection; press-fit termination eliminates thermal stress on the component and PCB during assembly.

Q: Does the change in contact finish from Tin-Lead to Tin affect compatibility?

A: No. Both finishes provide equivalent electrical conductivity and corrosion resistance for screw terminal applications. Tin finish (5055558-4) is preferred in RoHS-compliant applications and eliminates lead content, meeting environmental regulations without compromising performance.

Q: Why is the 5055558-4 RoHS Compliant while the 55558-4 is not?

A: The 55558-4 uses tin-lead contact finish, which contains lead and is non-compliant with RoHS directives restricting hazardous substances. The 5055558-4 uses tin finish without lead, meeting RoHS requirements for new production and applications subject to environmental regulations.

Q: Is the 25 A current rating of the 5055558-4 a limiting factor?

A: No. The 25 A current rating of the 5055558-4 represents a specified electrical capability. The original 55558-4 does not specify a current rating in the provided data. The 5055558-4 provides documented current handling capacity suitable for power distribution and screw terminal applications.

Q: What is the significance of REACH Unaffected status for the 5055558-4?

A: REACH Unaffected status indicates the 5055558-4 does not contain substances of very high concern (SVHC) listed under the REACH regulation. This simplifies compliance documentation and supply chain management compared to the REACH Affected 55558-4, which requires additional regulatory tracking and reporting.

Q: Are there packaging differences between the two parts?

A: The 5055558-4 is supplied in bulk packaging, while the 55558-4 packaging is not specified. Bulk packaging is standard for high-volume production and field service applications, supporting efficient inventory management and component distribution.