TE Connectivity AMP Connectors 643653-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 643653-1 is a 21-position single inline package (SIP) socket connector designed for through-hole mounting applications. This connector features tin-plated beryllium copper contacts with a 0.100" (2.54mm) pitch and is housed in a thermoplastic, glass-filled closed frame. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support, maintenance, and component procurement.

Substiute Parts

643653-1

TE Connectivity AMP ConnectorsIn Stock: 878643653-1 Datasheet

Current PartRFQ

714-43-121-31-018000

Mill-Max Manufacturing Corp.In Stock: 1138714-43-121-31-018000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 643653-1 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Type: SIP (Single Inline Package)
• Number of Positions: 21 (1 x 21)
• Pitch - Mating: 0.100" (2.54mm)
• Pitch - Post: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Termination: Solder
• Contact Material - Mating: Beryllium Copper
• Operating Temperature Range: Minimum -55°C, Maximum ≥105°C

Acceptable Variation Parameters:

• Contact Finish (Mating and Post): Tin or Gold plating are functionally equivalent for electrical performance
• Contact Material - Post: Beryllium Copper or Brass Alloy are acceptable alternatives
• Housing Material: Thermoplastic variants with equivalent mechanical properties
• Termination Post Length: Minor variations acceptable if within PCB design tolerances
• Compliance Standards: ROHS3 compliance required

The Mill-Max Manufacturing Corp. 714-43-121-31-018000 meets all mandatory matching parameters and acceptable variation criteria, establishing it as a valid substitute for the obsolete TE Connectivity part.

Parameter Comparison

Engineering Selection Recommendations

The Mill-Max Manufacturing Corp. 714-43-121-31-018000 is a direct functional substitute for the obsolete TE Connectivity AMP Connectors 643653-1 based on the following engineering criteria:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards. The substitute part carries active product status, providing assured long-term availability and supply chain continuity.

Electrical and Mechanical Compatibility: The substitute part maintains identical pitch specifications (0.100" / 2.54mm) for both mating and post positions, ensuring direct PCB footprint compatibility. The 21-position SIP configuration and through-hole solder termination are identical, eliminating the need for PCB redesign.

Contact System Enhancements: The gold plating on the Mill-Max substitute provides superior corrosion resistance and contact reliability compared to the tin-plated original. The brass alloy post material maintains electrical conductivity while offering enhanced durability. These characteristics result in improved long-term performance in applications subject to environmental exposure or thermal cycling.

Thermal Performance: The substitute part's operating temperature range of -55°C to 125°C exceeds the original specification of -55°C to 105°C, providing additional thermal margin for demanding applications.

Physical Considerations: The termination post length of 0.170" (4.32mm) on the substitute is 0.040" (1.02mm) longer than the original 0.130" (3.30mm). PCB design verification is required to confirm that this dimensional variation does not conflict with component placement, solder mask design, or adjacent component clearances.

Frequently Asked Questions (FAQ)

Q: Can the Mill-Max 714-43-121-31-018000 be used as a direct replacement for the TE Connectivity 643653-1 without PCB modifications?

A: The Mill-Max part is functionally compatible for electrical and mechanical connection purposes. However, the increased termination post length (0.170" versus 0.130") requires verification against PCB design specifications, including solder mask openings and adjacent component placement. No circuit redesign is necessary.

Q: What is the significance of the contact finish difference between tin and gold plating?

A: Both tin and gold finishes provide adequate electrical conductivity for this connector application. Gold plating offers superior resistance to oxidation and corrosion, particularly in environments with temperature cycling or moisture exposure. Tin plating is suitable for standard indoor applications with controlled environmental conditions.

Q: Are the beryllium copper and brass alloy post materials electrically equivalent?

A: Both materials provide acceptable electrical conductivity for SIP socket applications. Beryllium copper offers slightly higher spring force retention, while brass alloy provides enhanced durability under repeated insertion cycles. The electrical performance difference is negligible for standard IC socket applications.

Q: Why is the operating temperature range of the substitute part higher than the original?

A: The Mill-Max part is specified for -55°C to 125°C operation, compared to the original -55°C to 105°C. This extended upper temperature limit reflects the material properties of the polycyclohexylenedimethylene terephthalate (PCT) housing and gold-plated contact system. The substitute part is fully compatible with applications requiring the original -55°C to 105°C range.

Q: What is the impact of the different housing materials on mechanical performance?

A: The original TE Connectivity part uses thermoplastic glass-filled material, while the Mill-Max substitute uses polycyclohexylenedimethylene terephthalate (PCT) polyester. Both materials provide adequate mechanical strength and dimensional stability for SIP socket applications. PCT polyester offers enhanced chemical resistance and thermal stability.

Q: Is the Mill-Max part available in the same packaging format as the original?

A: The original TE Connectivity part was supplied in standard packaging, while the Mill-Max substitute is supplied in bulk packaging. This difference affects only procurement and handling procedures, not the electrical or mechanical performance of the connector itself.

Q: What compliance certifications apply to both parts?

A: Both the TE Connectivity 643653-1 and Mill-Max 714-43-121-31-018000 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both parts are classified under HTSUS code 8536.69.4040 and ECCN EAR99 for export purposes.