TE Connectivity AMP Connectors 647143-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 647143-3 is a rectangular connector header designed for through-hole mounting applications. This connector is a vertical 3-position header with 0.156" (3.96mm) pitch spacing, part of the MTA-156 series. The connector features shrouded 4-wall construction with male pin contacts, gold-plated mating surfaces, and tin-lead post finishes. It is rated for 600VAC operation across an operating temperature range of -55°C to 105°C.

The 647143-3 carries an obsolete product status, which necessitates identification of equivalent substitute components for ongoing design support and procurement requirements. Active alternatives with identical or superior electrical and mechanical specifications are available to ensure design continuity and supply chain reliability.

Substiute Parts

647143-3

TE Connectivity AMP ConnectorsIn Stock: 927647143-3 Datasheet

Current PartRFQ

2-647143-3

TE Connectivity AMP ConnectorsIn Stock: 10072-647143-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 647143-3 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Pitch spacing: 0.156" (3.96mm)
• Number of positions: 3
• Number of rows: 1
• Contact type: Male Pin
• Voltage rating: 600VAC
• Operating temperature range: -55°C ~ 105°C

Mechanical Compatibility Parameters:

• Connector type: Header
• Mounting type: Through Hole
• Shrouding configuration: Shrouded - 4 Wall
• Termination method: Solder
• Fastening type: Friction Lock
• Contact shape: Square
• Insulation material: Thermoplastic, Glass Filled
• Material flammability rating: UL94 V-0

Contact Specifications:

• Contact length - mating: 0.300" (7.62mm)
• Contact length - post: 0.125" (3.18mm)
• Overall contact length: 0.550" (13.97mm)
• Insulation height: 0.525" (13.34mm)
• Contact finish - mating: Gold
• Contact material: Copper Alloy

Substitute parts must maintain identical specifications across all listed parameters to ensure direct functional and mechanical interchangeability without design modification or board rework.

Parameter Comparison

Engineering Selection Recommendations

The 2-647143-3 is a direct functional equivalent to the obsolete 647143-3 with enhanced compliance characteristics. Both connectors maintain identical electrical and mechanical specifications across all critical parameters including pitch spacing, contact configuration, voltage rating, operating temperature range, and physical dimensions.

The 2-647143-3 offers two material improvements over the original part:

Contact Finish Upgrade: The substitute part features tin-plated post finishes compared to the tin-lead finish of the original. This change eliminates lead content while maintaining electrical performance and solderability characteristics.

Regulatory Compliance Upgrade: The 2-647143-3 is ROHS3 compliant, whereas the 647143-3 is RoHS non-compliant. This compliance status aligns with current regulatory requirements for electronic components in most jurisdictions.

Both parts share identical moisture sensitivity levels (MSL 1), flammability ratings (UL94 V-0), and export classifications (EAR99). The substitute part is currently in active production status with confirmed inventory availability, ensuring reliable supply chain access for new designs and production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2-647143-3 be used as a direct replacement for the 647143-3 without PCB modifications?

A: Yes. The 2-647143-3 maintains identical mechanical and electrical specifications across all critical parameters. No PCB layout changes, footprint modifications, or design alterations are required for substitution.

Q: What is the significance of the "2-" prefix in the part number 2-647143-3?

A: The "2-" prefix indicates a variant designation within the TE Connectivity AMP Connectors product line. Both 647143-3 and 2-647143-3 are part of the MTA-156 series and share the same base product number (647143). The variant designation reflects manufacturing or compliance updates while maintaining form, fit, and function equivalence.

Q: Are there differences in contact plating between these two parts?

A: The mating contact surfaces are identical on both parts, featuring gold plating at 15.0µin (0.38µm) thickness. The post finish differs: the original 647143-3 uses tin-lead plating, while the 2-647143-3 uses tin plating. Both finishes provide equivalent solderability and electrical performance.

Q: Does the RoHS3 compliance of the 2-647143-3 affect electrical performance compared to the non-compliant 647143-3?

A: No. RoHS3 compliance reflects material composition restrictions (elimination of lead and other restricted substances) and does not alter electrical characteristics, voltage ratings, current capacity, or operating temperature specifications. Both parts deliver identical electrical performance.

Q: What is the current availability status of these parts?

A: The 647143-3 is obsolete with 872 pieces in stock. The 2-647143-3 is in active production status with 900 pieces in stock. For new designs and ongoing production requirements, the 2-647143-3 is the recommended selection.

Q: Are the operating temperature ranges identical between these connectors?

A: Yes. Both the 647143-3 and 2-647143-3 operate across the identical temperature range of -55°C to 105°C. No thermal performance differences exist between the two parts.

Q: Can these connectors be used interchangeably in existing assemblies?

A: Yes. The 2-647143-3 is a direct mechanical and electrical equivalent to the 647143-3. Existing cable assemblies, mating connectors, and board-level interfaces designed for the 647143-3 are fully compatible with the 2-647143-3 without modification.