TE Connectivity AMP Connectors 644629-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644629-2 is a rectangular connector header, right-angle configuration, designed for through-hole mounting in board-to-cable/wire applications. This connector features a 2-position, single-row layout with 0.156" (3.96mm) pitch spacing and is part of the MTA-156 series. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility while meeting current manufacturing and compliance standards.

Substiute Parts

644629-2

TE Connectivity AMP ConnectorsIn Stock: 636644629-2 Datasheet

Current PartRFQ

3-644633-2

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 644629-2 is based on strict electrical and mechanical parameter alignment within the MTA-156 connector series. The primary substitute, TE Connectivity AMP Connectors 3-644633-2, maintains full compatibility through the following critical parameters:

Electrical Compatibility:

• Identical pitch spacing: 0.156" (3.96mm)
• Identical voltage rating: 600VAC
• Identical operating temperature range: -55°C ~ 105°C
• Identical contact material: Copper Alloy
• Identical contact finish on mating surface: Gold at 30.0µin (0.76µm)

Mechanical Compatibility:

• Identical connector type: Header
• Identical mounting configuration: Through Hole, Right Angle
• Identical number of positions: 2
• Identical number of rows: 1
• Identical shrouding: Shrouded - 1 Wall
• Identical contact length - mating: 0.450" (11.43mm)
• Identical contact length - post: 0.125" (3.18mm)
• Identical insulation height: 0.300" (7.62mm)
• Identical insulation material: Thermoplastic, Glass Filled
• Identical termination method: Solder
• Identical fastening type: Friction Lock

Compliance Alignment:

• Both parts maintain UL94 V-0 flammability rating
• Both parts classified as MSL 1 (Unlimited)
• Both parts assigned ECCN EAR99
• Both parts share HTSUS code 8536.69.4040

The 3-644633-2 is the direct functional equivalent, with the primary distinction being active product status and enhanced availability.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 3-644633-2 is the direct substitute for the obsolete 644629-2 model. Selection of the 3-644633-2 is supported by the following engineering criteria:

Product Status Alignment: The 3-644633-2 maintains active product status, ensuring continued availability, manufacturing support, and compliance with current industry standards. The 644629-2 is classified as obsolete and subject to discontinuation of supply.

Compliance Certification: Both parts maintain identical UL94 V-0 flammability ratings and MSL 1 classification. The 3-644633-2 carries RoHS Compliant certification, meeting current environmental and hazardous substance restrictions. Both parts are assigned identical ECCN and HTSUS classifications, confirming regulatory alignment.

Electrical and Mechanical Equivalence: The 3-644633-2 provides complete functional equivalence across all critical electrical parameters (voltage rating, operating temperature, contact materials, and finishes) and mechanical parameters (pitch, mounting configuration, contact geometry, and termination method).

Minor Specification Variance: The 3-644633-2 incorporates a Board Guide feature and utilizes Tin contact finish on the post termination surface, compared to Tin-Lead in the original 644629-2. These variations do not affect electrical or mechanical compatibility and represent manufacturing improvements in the active product line.

For new designs and production transitions, the 3-644633-2 is the appropriate selection. Existing inventory of 644629-2 units may continue in service where supply permits, with transition planning to the active substitute.

Frequently Asked Questions (FAQ)

Q: Can the 3-644633-2 be used as a direct replacement for the 644629-2 in existing assemblies?

A: Yes. The 3-644633-2 maintains identical electrical and mechanical specifications across all critical parameters, including pitch spacing, voltage rating, operating temperature range, contact geometry, and mounting configuration. The connector is fully compatible with existing mating components and PCB layouts designed for the 644629-2.

Q: What is the difference between the Tin-Lead finish on the 644629-2 and the Tin finish on the 3-644633-2?

A: The contact finish on the post termination surface differs between the two parts. The 644629-2 uses Tin-Lead, while the 3-644633-2 uses Tin. Both finishes provide equivalent solderability and electrical performance. The Tin finish on the 3-644633-2 reflects current manufacturing standards and RoHS compliance requirements.

Q: Does the Board Guide feature on the 3-644633-2 affect compatibility?

A: No. The Board Guide feature is an enhancement that improves assembly alignment and does not affect electrical or mechanical compatibility with existing designs. The feature is additive and does not create interference with standard PCB layouts.

Q: Are there packaging differences between the 644629-2 and 3-644633-2?

A: The 644629-2 is supplied in standard packaging, while the 3-644633-2 is supplied in Bulk packaging. Both packaging formats contain identical connector components. Bulk packaging is standard for active product lines and does not affect component specifications or performance.

Q: What is the current availability status of each part?

A: The 644629-2 is classified as obsolete with 613 units in current inventory. The 3-644633-2 is an active product with 1087 units in current inventory. For new procurement and production planning, the 3-644633-2 is the recommended selection to ensure long-term supply continuity.

Q: Are both parts RoHS compliant?

A: The 644629-2 is ROHS3 Compliant. The 3-644633-2 is RoHS Compliant. Both parts meet current environmental and hazardous substance restriction requirements. The 3-644633-2 designation reflects current active product compliance status.

Q: Can the 3-644633-2 be used in applications rated for 600VAC?

A: Yes. The 3-644633-2 maintains the identical 600VAC voltage rating as the 644629-2 and is suitable for all applications within this voltage specification.

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

A: Both the 644629-2 and 3-644633-2 operate across the identical temperature range of -55°C to 105°C, ensuring compatibility across all thermal operating conditions.