TE Connectivity AMP Connectors 749721-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 749721-3 is a 28 Position D-Type Receptacle connector featuring female sockets with vertical solder termination. This connector is part of the AMPLIMITE .050 III series and is designed for through-hole mounting applications requiring shielded signal transmission. The part maintains Active product status and is currently in stock with 903 pieces available.

Substitute parts are identified to address specific application requirements including regulatory compliance, inventory availability, and manufacturing continuity. The primary substitute maintains identical electrical and mechanical specifications while offering enhanced compliance certifications.

Substiute Parts

749721-3

TE Connectivity AMP ConnectorsIn Stock: 993749721-3 Datasheet

Current PartRFQ

5749721-3

TE Connectivity AMP ConnectorsIn Stock: 13395749721-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 749721-3 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part 5749721-3 qualifies as a direct equivalent based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Connector type: Receptacle, Female Sockets
• Number of positions: 28
• Number of rows: 2
• Current rating: 1A
• Voltage rating: 30V
• Operating temperature range: -55°C ~ 105°C
• Contact material: Phosphor Bronze
• Contact finish: Gold

Mechanical Parameters (Must Match Exactly):

• Connector style: D-Type
• Shell size and connector layout: 0.050 Pitch x 0.100 Row to Row
• Mounting type: Through Hole
• Termination method: Solder
• Shell material and finish: Steel, Nickel Plated
• Flange feature: Housing/Shell (2-56); Latchblocks
• Features: Shielded
• Dielectric material: Thermoplastic
• Material flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)
• Packaging: Tube

The substitute part 5749721-3 maintains complete parameter equivalence with the main part 749721-3 across all specified electrical and mechanical characteristics, confirming direct substitutability.

Parameter Comparison

Engineering Selection Recommendations

Both the main part 749721-3 and substitute part 5749721-3 are Active products manufactured by TE Connectivity AMP Connectors and maintain complete electrical and mechanical equivalence across all specified parameters.

Compliance Considerations:

The primary distinction between these parts is regulatory compliance status. The substitute part 5749721-3 carries ROHS3 Compliant certification, whereas the main part 749721-3 is RoHS non-compliant. Applications subject to RoHS3 regulatory requirements must utilize part 5749721-3.

The main part 749721-3 is designated as REACH Affected, while the substitute part 5749721-3 carries Vendor Undefined REACH status. Applications requiring specific REACH compliance documentation should clarify vendor status with the supplier.

Inventory Availability:

The substitute part 5749721-3 maintains higher inventory availability at 1236 pieces compared to 903 pieces for the main part 749721-3. Both parts are packaged in tubes and carry identical electrical ratings, mechanical specifications, and environmental operating parameters.

Selection Basis:

Selection between these parts should be determined by regulatory compliance requirements applicable to the end application. Where RoHS3 compliance is mandated, part 5749721-3 is the appropriate selection. Where RoHS compliance is not required, either part satisfies the electrical and mechanical requirements identically.

Frequently Asked Questions (FAQ)

Q: Are parts 749721-3 and 5749721-3 electrically interchangeable?

A: Yes. Both parts are 28 Position D-Type Receptacle connectors with identical electrical specifications: 1A current rating, 30V voltage rating, operating temperature range of -55°C to 105°C, and gold-plated phosphor bronze contacts. They are electrically interchangeable.

Q: Are parts 749721-3 and 5749721-3 mechanically interchangeable?

A: Yes. Both parts share identical mechanical specifications including D-Type connector style, 0.050 Pitch x 0.100 Row to Row shell size, through-hole mounting, solder termination, steel nickel-plated shell, shielded design, and identical flange features with latchblocks. They are mechanically interchangeable.

Q: What is the primary difference between these two parts?

A: The primary difference is regulatory compliance status. Part 5749721-3 is ROHS3 Compliant, while part 749721-3 is RoHS non-compliant. Both parts maintain identical electrical and mechanical specifications.

Q: Which part should I select for RoHS3 regulated applications?

A: Part 5749721-3 must be selected for applications subject to RoHS3 regulatory requirements. This part carries ROHS3 Compliant certification.

Q: Are both parts available in the same packaging?

A: Yes. Both parts are packaged in tubes, maintaining identical packaging specifications.

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

A: Both parts operate across the temperature range of -55°C to 105°C, supporting applications in extreme thermal environments.

Q: Do both parts support shielded signal transmission?

A: Yes. Both parts feature shielded design, providing electromagnetic interference protection for signal transmission.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Can these connectors be used in applications requiring UL94 V-0 flammability rating?

A: Yes. Both parts meet UL94 V-0 material flammability rating, suitable for applications with flammability requirements.

Q: What contact material is used in these connectors?

A: Both parts utilize phosphor bronze contacts with gold plating, providing reliable electrical contact and corrosion resistance.