TE Connectivity 749111-4 D-Type Connector: Equivalent & Substitute Parts

Part Overview

The TE Connectivity 749111-4 is a 50-position D-Type plug connector with male pins, designed for IDC ribbon cable termination. This connector is part of 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.

Substiute Parts

749111-4

TE Connectivity AMP ConnectorsIn Stock: 1022749111-4 Datasheet

Current PartRFQ

5749111-4

TE Connectivity AMP ConnectorsIn Stock: 14295749111-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 749111-4 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for connector style, position count, row configuration, pitch geometry, termination method, current and voltage ratings, operating temperature range, shell construction, contact materials, and shielding characteristics.

The TE Connectivity 5749111-4 qualifies as a direct substitute based on complete parameter alignment across all critical dimensions. Both parts share the same AMPLIMITE .050 III series designation, identical 50-position D-Type plug configuration with male pins, matching 0.050 pitch and 0.100 row-to-row spacing, and equivalent electrical performance specifications including 1A current rating and 30V voltage rating. The termination method, mounting configuration, shell material finish, contact materials, and operating temperature range are identical between both parts.

The primary distinction between the main part and substitute is product status and regulatory compliance. The 749111-4 is obsolete and RoHS non-compliant, while the 5749111-4 is active and ROHS3 compliant, making it the appropriate selection for new designs and ongoing procurement requirements.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 5749111-4 is the appropriate selection for all applications currently using or requiring the 749111-4 connector. The substitute part maintains complete electrical and mechanical equivalence while offering the advantage of active product status and ROHS3 compliance.

For new designs and procurement activities, the 5749111-4 should be specified. The obsolete status of the 749111-4 creates supply chain risk and limits availability to existing inventory. The 5749111-4 provides continuity of supply through an active product line with established manufacturing and distribution channels.

Regulatory compliance considerations favor the 5749111-4 for applications subject to RoHS requirements or environmental regulations. The ROHS3 compliance status of the substitute part aligns with current regulatory frameworks in electronics manufacturing and procurement.

Frequently Asked Questions (FAQ)

Q: Can the 5749111-4 be used as a direct replacement for the 749111-4 in existing assemblies?

A: Yes. The 5749111-4 is electrically and mechanically equivalent to the 749111-4 across all specified parameters. Both connectors share identical pin configurations, electrical ratings, termination methods, and physical dimensions. Direct substitution is supported without circuit or assembly modifications.

Q: What is the primary reason to transition from the 749111-4 to the 5749111-4?

A: The 749111-4 is classified as obsolete, creating supply chain constraints and limiting future availability. The 5749111-4 is an active product with established manufacturing and distribution. Additionally, the 5749111-4 is ROHS3 compliant, whereas the 749111-4 is RoHS non-compliant, making the substitute part suitable for applications subject to environmental regulations.

Q: Are there packaging differences between the 749111-4 and 5749111-4?

A: The 749111-4 is supplied without specified packaging, while the 5749111-4 is packaged in tubes. This packaging difference does not affect electrical or mechanical performance and does not impact substitution compatibility.

Q: What are the key electrical parameters that remain constant between these two connectors?

A: Both connectors maintain identical current rating (1A), voltage rating (30V), operating temperature range (-55°C to 105°C), and contact materials (phosphor bronze with gold plating). These parameters ensure equivalent electrical performance in all applications.

Q: Are the connector dimensions and pitch specifications identical?

A: Yes. Both the 749111-4 and 5749111-4 maintain identical shell size and connector layout specifications of 0.050 pitch with 0.100 row-to-row spacing. The 50-position, 2-row D-Type configuration is identical, ensuring mechanical compatibility with existing mating connectors and cable assemblies.

Q: What is the significance of the shielded feature in both connectors?

A: Both connectors incorporate shielding, which provides electromagnetic interference protection. This feature is maintained in the substitute part, ensuring equivalent performance in applications requiring EMI mitigation.

Q: Can the 5749111-4 be used in applications with temperature extremes?

A: Yes. The 5749111-4 maintains the same operating temperature range as the 749111-4, spanning -55°C to 105°C. This range supports operation across industrial, commercial, and military temperature environments.