TE Connectivity 5749925-3 D-Type Plug Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 5749925-3 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 0.050 pitch layout with 0.100 row-to-row spacing. The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

5749925-3

TE Connectivity AMP ConnectorsIn Stock: 9805749925-3 Datasheet

Current PartRFQ

5749621-5

TE Connectivity AMP ConnectorsIn Stock: 17775749621-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 5749925-3 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Plug with male pins
• Number of positions: 50
• Number of rows: 2
• Shell size and connector layout: 0.050 pitch x 0.100 row to row spacing
• Termination method: IDC ribbon cable
• Current rating: 1A
• Voltage rating: 30V
• Operating temperature range: -55°C to 105°C
• Contact material: Phosphor bronze
• Contact finish: Gold
• Dielectric material: Thermoplastic
• Material flammability rating: UL94 V-0

The substitute part TE Connectivity 5749621-5 maintains all mandatory matching parameters, ensuring functional and mechanical compatibility with applications originally designed for the 5749925-3. Differences in shell material finish, shielding features, and product status do not affect core electrical or mechanical substitution capability.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 5749621-5 serves as a direct functional substitute for the obsolete 5749925-3 based on electrical and mechanical parameter equivalence. Both connectors maintain identical core specifications across connector type, position count, pitch layout, termination method, current and voltage ratings, and operating temperature range.

The 5749621-5 offers the advantage of active product status, ensuring continued availability and supply chain reliability. This part is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and system upgrades.

The 5749621-5 incorporates shielding and tin-nickel plated steel shell construction, compared to the unspecified shell material of the 5749925-3. These design enhancements provide improved electromagnetic interference rejection and corrosion resistance without affecting mechanical or electrical compatibility.

For applications requiring exact physical appearance matching or specific terminating cover features of the original 5749925-3, the shielded design and color difference of the 5749621-5 should be evaluated within the context of the end-use application. The electrical and mechanical substitution capability remains valid across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the 5749621-5 be used as a direct replacement for the 5749925-3 in existing systems?

A: Yes. The 5749621-5 maintains electrical and mechanical equivalence across all critical parameters including connector type, position count, pitch layout, termination method, current rating, voltage rating, and operating temperature range. Both connectors are compatible with IDC ribbon cable termination and identical mating interfaces.

Q: What are the differences between these two connectors?

A: The primary differences are product status, shell construction, and features. The 5749925-3 is obsolete with unspecified shell material, while the 5749621-5 is active with steel tin-nickel plated shell construction and shielding. The 5749621-5 is ROHS3 compliant. These differences do not affect core electrical or mechanical substitution capability.

Q: Why is the 5749925-3 classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 5749621-5 provides continued access to equivalent connector functionality within the AMPLIMITE .050 III series.

Q: Are there packaging differences between these parts?

A: The 5749925-3 packaging is not specified in available documentation. The 5749621-5 is supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Does the shielding feature of the 5749621-5 affect compatibility?

A: No. Shielding is an enhancement feature that provides improved electromagnetic interference rejection. It does not prevent mechanical mating or electrical signal transmission with unshielded connector designs.

Q: What is the significance of ROHS3 compliance on the 5749621-5?

A: ROHS3 compliance indicates the 5749621-5 meets current environmental and regulatory requirements for restricted hazardous substances. This is relevant for new designs and systems subject to environmental regulations. The 5749925-3 lists RoHS status as not applicable due to its obsolete classification.

Q: Can these connectors be used interchangeably in ribbon cable applications?

A: Yes. Both connectors are specified for IDC ribbon cable termination with identical pitch and row spacing. They are mechanically and electrically interchangeable for ribbon cable applications.