TE Connectivity 749611-1 SCSI Receptacle Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 749611-1 is a 26-position SCSI receptacle connector featuring panel mount installation with IDC (Insulation Displacement Contact) termination. This connector is part of the AMPLIMITE .050 series and utilizes outer shroud contact design with gold-plated contacts. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing system maintenance, repair, and legacy equipment support.

Substiute Parts

749611-1

TE Connectivity AMP ConnectorsIn Stock: 1102749611-1 Datasheet

Current PartRFQ

1-749611-2

TE Connectivity AMP ConnectorsIn Stock: 19751-749611-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 749611-1 is determined by strict equivalence across the following critical parameters:

Electrical and Mechanical Compatibility Requirements:

• Connector type: Receptacle
• Position count: 26 positions
• Row configuration: 2 rows
• Mounting configuration: Panel mount
• Termination technology: IDC
• Connector style: Outer shroud contacts
• Series designation: AMPLIMITE .050
• Contact material finish: Gold plating

The substitute part 1-749611-2 maintains identical electrical and mechanical specifications across all these parameters, establishing direct functional equivalence. The primary differences between the main part and substitute relate to packaging format, contact finish thickness specification, RoHS compliance status, and inventory availability rather than core connector functionality.

Parameter Comparison

Engineering Selection Recommendations

749611-1 (Original Part): The 749611-1 is classified as obsolete and carries RoHS non-compliant status. This part is suitable for direct replacement in legacy systems where RoHS compliance is not a regulatory requirement and where the specific contact finish thickness of 30.0µin is functionally necessary. Current inventory availability is 1083 pieces.

1-749611-2 (Substitute Part): The 1-749611-2 provides functional equivalence to the 749611-1 while offering RoHS compliance certification. This substitute is the appropriate selection for applications subject to RoHS regulations or for new installations requiring compliance documentation. The contact finish is specified as flash plating rather than the thicker 30.0µin specification. Both parts share identical electrical and mechanical characteristics, connector geometry, and mounting requirements. Current inventory availability is 1901 pieces. Packaging is supplied in bulk format.

Both parts are classified as obsolete and carry identical MSL ratings and ECCN designations. Selection between these parts should be based on RoHS compliance requirements and contact finish thickness specifications relevant to the application environment.

Frequently Asked Questions (FAQ)

Q: Are the 749611-1 and 1-749611-2 electrically and mechanically interchangeable?

A: Yes. Both connectors are 26-position SCSI receptacles with identical pin configurations, panel mount installation, IDC termination, and outer shroud contact design. They are functionally equivalent for SCSI signal transmission and mechanical installation.

Q: What is the difference between the contact finish specifications?

A: The 749611-1 specifies a contact finish thickness of 30.0µin (0.76µm), while the 1-749611-2 specifies flash plating. Flash plating is a thin electroplated layer applied to the base contact material. The functional difference depends on application-specific requirements for contact durability and wear resistance.

Q: Why does the 1-749611-2 have RoHS compliant status while the 749611-1 does not?

A: RoHS compliance status reflects the manufacturing process and material composition at the time of production. The 1-749611-2 was manufactured to meet RoHS directives, while the 749611-1 predates or was produced outside RoHS compliance requirements. Both parts are functionally identical in electrical and mechanical performance.

Q: What does the packaging difference mean?

A: The 749611-1 is supplied in standard packaging, while the 1-749611-2 is supplied in bulk packaging. Bulk packaging typically involves larger quantities per container with reduced individual packaging materials. This affects storage, handling, and inventory management but does not impact connector performance.

Q: Can I use the 1-749611-2 as a direct replacement for the 749611-1 in existing equipment?

A: Yes. The 1-749611-2 provides direct functional replacement for the 749611-1. The connector will install identically, mate with the same plug connectors, and transmit SCSI signals without modification. Selection should account for RoHS compliance requirements and contact finish specifications relevant to your application.

Q: Are both parts still in production?

A: Both the 749611-1 and 1-749611-2 are classified as obsolete products. However, both parts maintain current inventory availability through TE Connectivity AMP Connectors distribution channels.