TE Connectivity AMP Connectors 3-644633-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-644633-2 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features a 2-position configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable and board-to-board interconnections in general purpose and industrial applications. The part is currently active in production with 1,087 pieces in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component selection from multiple manufacturers.

Substiute Parts

3-644633-2

TE Connectivity AMP ConnectorsIn Stock: 10973-644633-2 Datasheet

Current PartRFQ

0026605020

MolexIn Stock: 1663130026605020 Datasheet

SimilarRFQ

0026645020

MolexIn Stock: 267550026645020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 3-644633-2 are identified based on strict equivalence of critical electrical and mechanical parameters. The substitution logic is based on the following key parameters that must match or be compatible:

Critical Matching Parameters:

• Pitch - Mating: 0.156" (3.96mm)
• Number of Positions: 2
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Shrouding: Shrouded - 1 Wall
• Contact Length - Mating: 0.450" (11.43mm)
• Contact Shape: Square
• Fastening Type: Friction Lock
• Material Flammability Rating: UL94 V-0

The Molex 0026605020 and Molex 0026645020 satisfy these critical parameters and are therefore classified as equivalent substitute parts. Both parts maintain the same mating pitch, position count, mounting configuration, and electrical safety ratings required for direct substitution in applications designed for the TE Connectivity 3-644633-2.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0026605020 and Molex 0026645020 connectors are functionally equivalent to the TE Connectivity 3-644633-2 based on critical electrical and mechanical parameters. Both substitute parts maintain active product status and comply with RoHS3 requirements, exceeding the RoHS compliance of the primary part. All three connectors carry UL94 V-0 flammability ratings and MSL 1 moisture sensitivity classifications, indicating equivalent environmental performance.

The primary differences between the TE Connectivity 3-644633-2 and the Molex substitutes are:

Contact Length - Post: The TE Connectivity part features a 0.125" (3.18mm) post length, while both Molex substitutes provide 0.156" (3.96mm) post length. This difference affects board-level clearance and may require PCB layout verification.

Insulation Height: The TE Connectivity part has 0.300" (7.62mm) insulation height compared to 0.394" (10.00mm) for both Molex parts. This dimensional variance impacts connector profile and mating interface geometry.

Contact Finish - Mating: The TE Connectivity part specifies gold mating contact finish, while both Molex substitutes use tin finish. Contact finish selection affects corrosion resistance and electrical performance in specific environmental conditions.

Insulation Material: The TE Connectivity part uses thermoplastic glass-filled insulation, while Molex 0026605020 uses polyester glass-filled insulation and Molex 0026645020 uses polyester insulation. Material composition affects thermal and mechanical properties.

Selection between these parts should be based on specific application requirements regarding post length, insulation height, contact finish performance, and insulation material compatibility. All three parts are suitable for general purpose and industrial applications with equivalent electrical safety performance.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0026605020 or 0026645020 be used as direct replacements for the TE Connectivity 3-644633-2?

A: Both Molex parts are functionally equivalent based on critical mating parameters including pitch, position count, mounting type, and electrical safety ratings. However, dimensional differences in post length and insulation height require PCB layout verification before implementation. Contact finish differences (gold versus tin) may affect performance in specific corrosive environments.

Q: What is the significance of the different contact post lengths?

A: The TE Connectivity 3-644633-2 has a 0.125" (3.18mm) post length, while both Molex substitutes have 0.156" (3.96mm) post length. This affects the depth of solder joint penetration on the PCB and requires verification that board-level clearances and solder pad designs accommodate the longer post geometry.

Q: How do the insulation height differences impact connector selection?

A: The TE Connectivity part has 0.300" (7.62mm) insulation height compared to 0.394" (10.00mm) for the Molex parts. This affects the overall connector profile, mating interface geometry, and board-level space requirements. Applications with tight vertical clearance constraints must account for this dimensional variance.

Q: Are there compliance differences between the three parts?

A: All three parts comply with UL94 V-0 flammability requirements and carry MSL 1 moisture sensitivity ratings. The TE Connectivity part is RoHS Compliant, while both Molex parts are ROHS3 Compliant. ROHS3 represents an updated compliance standard that exceeds the original RoHS requirements.

Q: What is the difference between gold and tin contact finishes?

A: The TE Connectivity 3-644633-2 uses gold mating contact finish with 30.0µin (0.76µm) thickness, while both Molex substitutes use tin finish with 60.0µin (1.52µm) thickness. Gold provides superior corrosion resistance in harsh environments, while tin offers cost efficiency for general purpose applications. Contact finish selection depends on environmental exposure and electrical performance requirements.

Q: Do all three parts support the same voltage and temperature ratings?

A: The TE Connectivity 3-644633-2 specifies 600VAC voltage rating and -55°C to 105°C operating temperature range. The Molex substitutes do not provide specified voltage and operating temperature ratings in the available documentation. Applications requiring confirmed voltage and temperature specifications should reference detailed manufacturer datasheets.

Q: What are the inventory availability differences?

A: The TE Connectivity 3-644633-2 has 1,087 pieces in stock. The Molex 0026605020 has significantly higher availability with 166,225 pieces in stock, while the Molex 0026645020 has 26,700 pieces available. Inventory levels may influence sourcing decisions for high-volume production requirements.

Q: Are there differences in insulation material composition?

A: The TE Connectivity 3-644633-2 uses thermoplastic glass-filled insulation. The Molex 0026605020 uses polyester glass-filled insulation, and the Molex 0026645020 uses polyester insulation. Material composition affects thermal stability, mechanical properties, and chemical resistance. Application-specific environmental conditions should guide material selection.