TE Connectivity AMP Connectors 4-1571551-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-1571551-6 is a 20-position DIP socket with 0.3" (7.62mm) row spacing, gold-plated contacts, and through-hole solder termination. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. The socket accommodates standard DIP integrated circuits with 0.100" (2.54mm) pitch and operates across the industrial temperature range of -55°C to 125°C.

Substiute Parts

4-1571551-6

TE Connectivity AMP ConnectorsIn Stock: 10994-1571551-6 Datasheet

Current PartRFQ

210-13-320-41-001000

Mill-Max Manufacturing Corp.In Stock: 898210-13-320-41-001000 Datasheet

DirectRFQ

20-3518-10

Aries ElectronicsIn Stock: 166020-3518-10 Datasheet

SimilarRFQ

20-3518-10T

Aries ElectronicsIn Stock: 97020-3518-10T Datasheet

SimilarRFQ

20-3518-11

Aries ElectronicsIn Stock: 98320-3518-11 Datasheet

SimilarRFQ

612-91-320-41-003000

Mill-Max Manufacturing Corp.In Stock: 795612-91-320-41-003000 Datasheet

SimilarRFQ

612-93-320-41-001000

Mill-Max Manufacturing Corp.In Stock: 749612-93-320-41-001000 Datasheet

SimilarRFQ

614-93-320-31-012000

Mill-Max Manufacturing Corp.In Stock: 1527614-93-320-31-012000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-1571551-6 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Number of Positions: 20 (2 x 10)
• Row Spacing: 0.3" (7.62mm)
• Pitch - Mating: 0.100" (2.54mm)
• Pitch - Post: 0.100" (2.54mm)
• Contact Finish - Mating: Gold
• Contact Material - Mating: Beryllium Copper
• Mounting Type: Through Hole
• Termination: Solder
• Operating Temperature Range: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Contact Finish Thickness (Mating): 10.0µin to 30.0µin
• Contact Finish - Post: Gold, Tin, or Tin-Lead
• Contact Material - Post: Nickel, Brass, or Brass Alloy
• Housing Material: PCT Polyester or Polyamide (PA46) Nylon 4/6 Glass Filled
• Frame Configuration: Closed or Open Frame
• Termination Post Length: 0.124" to 0.183"
• Product Status: Active substitutes preferred over obsolete

All substitute parts listed maintain functional and mechanical compatibility with the original 4-1571551-6 specification while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Direct Equivalent:

The Mill-Max Manufacturing 210-13-320-41-001000 provides the closest functional equivalence to the 4-1571551-6. This part maintains identical pitch specifications, contact materials, operating temperature range, and termination post length. The closed-frame design matches the original configuration. This part carries active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Secondary Substitutes - Functional Equivalents with Design Variations:

The Aries Electronics 20-3518-11 and 20-3518-10 series offer functional compatibility with the following design considerations:

• Open-frame configuration (versus closed-frame original)
• Polyamide housing material (versus PCT polyester original)
• Tin or Tin-Lead post finish (versus gold original)
• Brass post material (versus nickel original)

These parts maintain all critical electrical and mechanical parameters including position count, pitch, mating contact material, and operating temperature range. The 20-3518-11 variant provides gold post finish, reducing post-finish variation from the original specification.

Carrier-Based Substitutes:

The Mill-Max 612-91-320-41-003000, 612-93-320-41-001000, and 614-93-320-31-012000 incorporate carrier frames with open-frame socket designs. These parts are suitable for applications requiring carrier-based handling or automated insertion processes. All three maintain the critical electrical parameters and operating temperature range. Termination post length variations (0.124" to 0.183") require PCB design verification for compatibility.

Compliance and Availability:

All substitute parts listed carry active product status and ROHS3 compliance, providing regulatory continuity and supply chain stability. The original 4-1571551-6 is classified as obsolete; substitution is necessary for new production and long-term design support.

Frequently Asked Questions (FAQ)

Q: Can the 20-3518-10 or 20-3518-10T replace the 4-1571551-6 directly on existing PCBs?

A: The Aries Electronics 20-3518-10 and 20-3518-10T are mechanically and electrically compatible with the 4-1571551-6 for standard DIP socket applications. Both parts maintain identical pitch specifications (0.100" mating and post), 20-position configuration, and through-hole solder termination. The open-frame design and polyamide housing differ from the original closed-frame PCT design but do not affect functional compatibility. Termination post length is identical at 0.125" (3.18mm).

Q: What is the difference between the 20-3518-10 and 20-3518-10T variants?

A: Both parts are functionally identical 20-position DIP sockets from Aries Electronics Series 518. The primary difference is packaging: 20-3518-10 is supplied in tube packaging, while 20-3518-10T is supplied in bulk packaging. Electrical and mechanical specifications are identical, including contact finish, materials, and termination characteristics.

Q: Why do some substitute parts have different post finish materials (Tin-Lead versus Gold)?

A: Post finish material variation does not affect socket functionality or DIP component compatibility. The post finish is the solder-side contact that connects to the PCB. Tin-Lead and Tin finishes are standard for through-hole solder termination and provide equivalent electrical performance. Gold post finish (as in 20-3518-11) offers enhanced corrosion resistance but is not required for standard applications.

Q: Are the Mill-Max carrier-based sockets (612 and 614 series) suitable for manual assembly?

A: The Mill-Max 612-91-320-41-003000, 612-93-320-41-001000, and 614-93-320-31-012000 incorporate carrier frames designed for automated insertion equipment. These parts are functionally compatible with the 4-1571551-6 for electrical and mechanical performance. Carrier-based designs are optimized for high-volume automated assembly processes. Manual assembly applications should prioritize non-carrier variants such as the 210-13-320-41-001000 or Aries 20-3518 series.

Q: What is the significance of the different termination post lengths in the substitute parts?

A: Termination post length affects PCB hole depth and solder joint formation. The original 4-1571551-6 specifies 0.125" (3.18mm) post length. Substitute parts maintain this specification (210-13-320-41-001000, 20-3518 series) or vary within acceptable ranges (612-91 at 0.183", 612-93 at 0.124", 614-93 at 0.136"). Longer posts (612-91) provide additional solder joint material for high-reliability applications. Shorter posts (612-93) are suitable for standard PCB thicknesses. PCB design verification is required when post length varies by more than ±0.010".

Q: Do all substitute parts meet the same RoHS compliance level as the original?

A: The original 4-1571551-6 carries RoHS Compliant status. All listed substitute parts carry ROHS3 Compliant status, which represents an enhanced compliance standard. ROHS3 compliance includes additional restricted substance requirements beyond the original RoHS directive. All substitutes meet or exceed the original compliance requirement.

Q: Which substitute part offers the best long-term availability?

A: All substitute parts listed carry active product status, ensuring ongoing manufacturing and supply. The Mill-Max 210-13-320-41-001000 and Aries 20-3518-10 series demonstrate the highest current inventory levels (818 and 1622 units respectively), indicating strong market availability. Active product status across all substitutes provides equivalent long-term supply assurance compared to the obsolete original part.

Q: Can the 4-1571551-6 be used interchangeably with the 210-13-320-41-001000 in new designs?

A: Yes. The 210-13-320-41-001000 provides direct functional equivalence to the 4-1571551-6 across all critical parameters: 20-position configuration, 0.3" row spacing, 0.100" pitch, gold-plated beryllium copper mating contacts, through-hole solder termination, and -55°C to 125°C operating range. The 210-13-320-41-001000 is preferred for new designs due to active product status and improved long-term availability.