TE Connectivity 747948-2 D-Sub Plug 25-Position IDC Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 747948-2 is a 25-position D-Sub plug connector with male pins, designed for IDC (Insulation Displacement Contact) and discrete wire termination. This connector belongs to the AMPLIMITE HDE-20 series and features a shielded, free-hanging configuration with cable-side male jackscrews. The part is classified as obsolete, making identification of active equivalent alternatives necessary for ongoing procurement and system maintenance. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Substiute Parts

747948-2

TE Connectivity AMP ConnectorsIn Stock: 1229747948-2 Datasheet

Current PartRFQ

1-747948-6

TE Connectivity AMP ConnectorsIn Stock: 12571-747948-6 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 747948-2 is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part 1-747948-6 maintains identical specifications in the following key areas:

Electrical Compatibility:

• 25-position configuration with 2-row layout
• Shell size 3 (DB, B) D-Sub format
• 250V voltage rating
• Operating temperature range of -55°C to 105°C
• Wire gauge compatibility: 22-26 AWG
• Phosphor bronze contact material with gold finish

Mechanical Compatibility:

• Free-hanging, in-line mounting configuration
• Cable-side male jackscrew flange (4-40)
• IDC and discrete wire termination support
• Steel, tin-plated shell construction
• Shielded design with backshell, cover, and grounding indents

Functional Equivalence:

• Both parts are D-Sub plug connectors with male pins
• Both support signal contact type
• Both include mounting screws and protective features
• Both comply with UL94 V-0 flammability rating

The primary distinction between the main part and substitute is product status and compliance certification. The substitute part 1-747948-6 is active and RoHS compliant, whereas the main part 747948-2 is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1-747948-6

The TE Connectivity 1-747948-6 is the direct equivalent substitute for the 747948-2. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The substitute part maintains active product status, ensuring continued availability and manufacturer support. The main part 747948-2 is classified as obsolete, creating supply chain risk and limiting access to technical documentation and support resources.

Compliance Certification: The substitute part 1-747948-6 is RoHS compliant, meeting current regulatory requirements for electronic components in regulated markets. The main part 747948-2 is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives.

Electrical and Mechanical Equivalence: Both parts share identical specifications across all critical parameters: 25-position D-Sub configuration, shell size 3 (DB, B), free-hanging mounting, IDC and discrete wire termination, 250V voltage rating, -55°C to 105°C operating temperature range, and UL94 V-0 flammability compliance.

Contact Finish Specification: The substitute part specifies flash gold plating on contacts, compared to the main part's 30.0µin (0.76µm) specification. Both finishes provide equivalent electrical performance and corrosion resistance for the intended application.

Packaging Consideration: The substitute part is supplied in bulk packaging, whereas the main part packaging is unspecified. This distinction does not affect functional compatibility or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 1-747948-6 be used as a direct replacement for the 747948-2 in existing applications?

A: Yes. The 1-747948-6 is electrically and mechanically equivalent to the 747948-2 across all specified parameters. Both connectors support 25-position D-Sub configuration, identical voltage and temperature ratings, matching termination methods, and equivalent contact materials and finishes. The substitute part is suitable for direct replacement in applications currently using the 747948-2.

Q: What is the difference between the contact finish specifications of these two parts?

A: The main part 747948-2 specifies a contact finish thickness of 30.0µin (0.76µm), while the substitute part 1-747948-6 specifies flash gold plating. Both finishes provide gold contact surfaces for electrical conductivity and corrosion resistance. Flash plating is a thin, uniform coating applied to the contact surface and is functionally equivalent to the specified thickness for this connector type.

Q: Why is the 747948-2 listed as obsolete?

A: The 747948-2 is classified as obsolete by the manufacturer. The active equivalent, 1-747948-6, is the current production part in the AMPLIMITE HDE-20 series. For new designs and ongoing procurement, the 1-747948-6 is the recommended selection.

Q: Are there any compliance differences between these parts?

A: Yes. The substitute part 1-747948-6 is RoHS compliant, while the main part 747948-2 is RoHS non-compliant. Both parts comply with UL94 V-0 flammability requirements. If RoHS compliance is required for your application, the 1-747948-6 must be selected.

Q: Do these connectors support both IDC and discrete wire termination?

A: Yes. Both the 747948-2 and 1-747948-6 support IDC (Insulation Displacement Contact) and discrete wire termination methods. Wire gauge compatibility is 22-26 AWG for both parts.

Q: What is the operating temperature range for these connectors?

A: Both connectors operate across the temperature range of -55°C to 105°C. This range is suitable for industrial and commercial applications requiring extended thermal performance.

Q: Are these connectors shielded?

A: Yes. Both the 747948-2 and 1-747948-6 feature shielded designs with backshell, cover, and grounding indents. The steel, tin-plated shell construction provides electromagnetic shielding and mechanical protection.

Q: What is the voltage rating for these D-Sub connectors?

A: Both connectors are rated for 250V operation. This rating applies to the signal contacts and shell design.

Q: Does packaging type affect the electrical or mechanical performance of these connectors?

A: No. The main part 747948-2 has unspecified packaging, while the substitute 1-747948-6 is supplied in bulk packaging. Packaging type does not affect connector performance, electrical characteristics, or mechanical compatibility. Packaging is a logistics consideration only.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. These connectors can be stored and handled without special moisture control measures.