TE Connectivity 2-103166-3 Rectangular Connector Header Equivalents & Substitutes

Part Overview

The TE Connectivity 2-103166-3 is a rectangular connector header manufactured under the AMPMODU Mod II series. This through-hole, right-angle header accommodates 50 positions across 2 rows with 0.100" (2.54mm) pitch spacing. The connector features shrouded 4-wall construction with male pin contacts, gold-plated mating surfaces, and tin-lead post finishes. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

2-103166-3

TE Connectivity AMP ConnectorsIn Stock: 12272-103166-3 Datasheet

Current PartRFQ

7-103166-3

TE Connectivity AMP ConnectorsIn Stock: 11547-103166-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 2-103166-3 with equivalent components is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (50)
• Number of rows (2)
• Pitch spacing (0.100" / 2.54mm)
• Row spacing (0.100" / 2.54mm)
• Mounting configuration (Through Hole, Right Angle)
• Shrouding design (Shrouded - 4 Wall)
• Contact finish on mating surface (Gold)
• Current rating (3A)
• Operating temperature range (-65°C ~ 105°C)
• Flammability rating (UL94 V-0)

The substitute part 7-103166-3 maintains all critical electrical and mechanical parameters. Differences exist only in product status (Active versus Obsolete), packaging format (Tray versus standard), contact finish on post termination (Tin versus Tin-Lead), and compliance certifications (ROHS3 Compliant and REACH Unaffected versus Not Applicable).

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 7-103166-3 serves as the direct active equivalent to the obsolete 2-103166-3 model. Both components share identical electrical and mechanical specifications across all critical parameters including connector geometry, contact configuration, pitch spacing, current rating, and operating temperature range.

Product Status Consideration: The 2-103166-3 is classified as obsolete, while the 7-103166-3 maintains active product status. Active status ensures continued manufacturer support, availability, and compliance with current regulatory requirements.

Compliance Certifications: The 7-103166-3 carries ROHS3 compliance and REACH Unaffected status, meeting contemporary environmental and regulatory standards. The 2-103166-3 lists RoHS status as not applicable and REACH status as vendor undefined, reflecting its obsolete classification.

Contact Finish Specification: The substitute part features tin post finish compared to the tin-lead finish of the main part. Both finishes maintain the specified contact finish thickness of 100.0µin (2.54µm) and are compatible with standard solder termination processes.

Packaging Format: The 7-103166-3 is supplied in tray packaging, which may differ from the original packaging format of the 2-103166-3. Packaging format does not affect electrical or mechanical performance.

For new designs and production applications, the 7-103166-3 is the appropriate selection. For legacy system maintenance where the exact original part is required, the 2-103166-3 remains available with current inventory of 1128 pieces.

Frequently Asked Questions (FAQ)

Q: Are the 2-103166-3 and 7-103166-3 electrically interchangeable?

A: Yes. Both parts maintain identical electrical specifications including 3A current rating, -65°C to 105°C operating temperature range, and gold-plated mating contacts. The contact finish on the post termination differs (tin-lead versus tin), but both finishes are compatible with standard solder attachment processes and maintain equivalent electrical performance.

Q: What is the significance of the product status difference between these parts?

A: The 2-103166-3 is classified as obsolete, indicating the manufacturer no longer actively produces or supports this part number. The 7-103166-3 maintains active status, ensuring ongoing availability, manufacturer technical support, and compliance with current regulatory standards. For new designs and long-term production planning, the active part number is the appropriate selection.

Q: Do the mechanical dimensions differ between these connectors?

A: No. Both parts share identical mechanical specifications: 50 positions across 2 rows, 0.100" (2.54mm) pitch spacing, 0.100" (2.54mm) row spacing, through-hole right-angle mounting, shrouded 4-wall construction, 0.318" (8.08mm) mating contact length, 0.135" (3.43mm) post contact length, and 0.400" (10.16mm) insulation height.

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

A: The 2-103166-3 is supplied in standard packaging, while the 7-103166-3 is supplied in tray packaging. Packaging format does not affect connector performance, electrical characteristics, or mechanical compatibility. Tray packaging may offer advantages for automated assembly processes.

Q: Are there compliance differences between these parts?

A: Yes. The 7-103166-3 is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The 2-103166-3 lists RoHS status as not applicable and REACH status as vendor undefined. For applications requiring compliance with modern environmental standards, the 7-103166-3 is the appropriate selection.

Q: Can the 7-103166-3 be used as a direct replacement in existing assemblies designed for the 2-103166-3?

A: Yes. The 7-103166-3 is mechanically and electrically compatible with the 2-103166-3. All critical parameters including connector type, contact configuration, pitch spacing, mounting style, and electrical ratings are identical. The part can be substituted without design modifications.

Q: What is the difference between tin and tin-lead post finishes?

A: Both finishes provide equivalent electrical performance and solder compatibility. Tin finish (7-103166-3) aligns with lead-free manufacturing standards and modern environmental regulations. Tin-lead finish (2-103166-3) represents traditional plating specifications. Both maintain the specified 100.0µin (2.54µm) finish thickness and are suitable for standard solder termination processes.