TE Connectivity 749621-4 D-Type Plug Connector: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 749621-4 is a 40-position D-Type plug connector with male pins, designed for IDC ribbon cable termination. This connector belongs to the AMPLIMITE .050 III series and features a shielded steel shell with tin-nickel plating and gold-plated contacts. The part is classified as obsolete, making identification of active equivalent components essential for procurement and system continuity. The substitute part 5749621-4 provides functional equivalence with active product status and improved compliance characteristics.

Substiute Parts

749621-4

TE Connectivity AMP ConnectorsIn Stock: 1180749621-4 Datasheet

Current PartRFQ

5749621-4

TE Connectivity AMP ConnectorsIn Stock: 61645749621-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 749621-4 with the active equivalent 5749621-4 is based on strict electrical and mechanical parameter equivalence. Both connectors maintain identical specifications across all critical functional parameters:

Electrical Parameters: Current rating (1A), voltage rating (30V), contact material (phosphor bronze), and contact finish (gold) are identical between the main part and substitute.

Mechanical Parameters: Connector style (D-Type), connector type (plug, male pins), position count (40), row configuration (2 rows), shell size and pitch (0.050 x 0.100), mounting type (free hanging in-line), shell material and finish (steel, tin-nickel plated), and dielectric material (thermoplastic) are fully matched.

Environmental Parameters: Operating temperature range (-55°C to 105°C), material flammability rating (UL94 V-0), and moisture sensitivity level (MSL 1) are equivalent.

Termination: Both parts utilize IDC ribbon cable termination, ensuring compatibility with existing cable assemblies and installation procedures.

The primary distinction between these parts is product status and compliance certification, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 5749621-4 serves as the direct active equivalent for the obsolete 749621-4. Selection of the substitute part is based on the following engineering criteria:

Product Status: The 749621-4 is classified as obsolete, creating supply chain risk and limiting procurement options. The 5749621-4 maintains active product status with confirmed inventory availability (6100 pieces), ensuring long-term sourcing capability.

Regulatory Compliance: The 5749621-4 is RoHS compliant and REACH unaffected, meeting current environmental and regulatory requirements. The main part carries RoHS non-compliant status with vendor-undefined REACH status, presenting compliance challenges for new designs and applications subject to regulatory restrictions.

Functional Equivalence: All electrical, mechanical, and environmental parameters are identical between the two parts. The 5749621-4 maintains the same connector geometry, pin configuration, termination method, and performance specifications as the 749621-4.

Certification and Standards: Both parts carry identical UL94 V-0 flammability ratings and equivalent moisture sensitivity levels, ensuring consistent performance in specified operating environments.

For applications currently using the 749621-4, direct substitution with the 5749621-4 is supported without modification to connector interfaces, cable assemblies, or system designs.

Frequently Asked Questions (FAQ)

Q: Can the 5749621-4 directly replace the 749621-4 in existing applications?

A: Yes. The 5749621-4 is electrically and mechanically equivalent to the 749621-4. All functional parameters, including pin count, pitch, termination type, current and voltage ratings, and operating temperature range are identical. Direct substitution is supported without design modification.

Q: What is the primary reason for substituting the 749621-4?

A: The 749621-4 is classified as obsolete, creating supply chain discontinuity. The 5749621-4 is an active product with confirmed inventory availability, ensuring reliable procurement for current and future applications.

Q: Are there compatibility concerns with existing ribbon cable assemblies?

A: No. Both the 749621-4 and 5749621-4 utilize identical IDC ribbon cable termination specifications. Existing cable assemblies designed for the 749621-4 are compatible with the 5749621-4 without modification.

Q: What are the compliance differences between these parts?

A: The 5749621-4 is RoHS compliant and REACH unaffected, while the 749621-4 is RoHS non-compliant with vendor-undefined REACH status. For applications subject to environmental regulations, the 5749621-4 is the appropriate selection.

Q: Do both parts have the same electrical performance specifications?

A: Yes. Current rating (1A), voltage rating (30V), contact material (phosphor bronze), contact finish (gold), and operating temperature range (-55°C to 105°C) are identical for both parts.

Q: What is the packaging difference between these parts?

A: The 749621-4 packaging is not specified in available documentation. The 5749621-4 is supplied in bulk packaging. Confirm packaging requirements with procurement specifications for your application.

Q: Are the shell materials and finishes identical?

A: Yes. Both parts feature steel shells with tin-nickel plating and gold-plated contacts. The shielded design and thermoplastic dielectric material are identical.

Q: Can the 5749621-4 be used in the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of -55°C to 105°C with UL94 V-0 flammability rating.