TE Connectivity 647123-3 Rectangular Connector Header – Equivalent & Substitute Parts

Part Overview

The TE Connectivity 647123-3 is a shrouded rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 3-position, single-row header operates within the MTA-156 series and features a 0.156" (3.96mm) pitch with friction lock fastening. The part is classified as Active product status and is suitable for general purpose and industrial applications requiring reliable solder termination and electrical connectivity across a -55°C to 105°C operating temperature range.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across connector geometry, contact configuration, termination method, and environmental ratings. Substitution becomes necessary when the primary part number reaches end-of-life status, inventory constraints occur, or packaging requirements differ between procurement scenarios.

Substiute Parts

647123-3

TE Connectivity AMP ConnectorsIn Stock: 1124647123-3 Datasheet

Current PartRFQ

2-647123-3

TE Connectivity AMP ConnectorsIn Stock: 73122-647123-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for rectangular connector headers is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• Pitch - Mating: 0.156" (3.96mm)
• Number of Positions: 3
• Number of Rows: 1
• Voltage Rating: 600VAC
• Contact Type: Male Pin

Mechanical Compatibility Parameters:

• Connector Type: Header
• Mounting Type: Through Hole
• Termination: Solder
• Shrouding: Shrouded - 4 Wall
• Fastening Type: Friction Lock

Environmental & Compliance Parameters:

• Operating Temperature Range: -55°C ~ 105°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 2-647123-3 maintains all critical electrical, mechanical, and environmental parameters. The primary difference is packaging configuration (Bulk versus standard packaging) and contact finish specification (Tin versus Tin-Lead on mating and post surfaces). These variations do not affect functional compatibility or performance in equivalent applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 647123-3 and 2-647123-3 are Active product status components manufactured by TE Connectivity within the MTA-156 series. Selection between these parts is based on the following engineering criteria:

Compliance & Certification Equivalence: Both parts maintain identical RoHS3 compliance, UL94 V-0 flammability rating, and Moisture Sensitivity Level 1 classification. Both are classified as EAR99 export control items and share the same HTSUS tariff code. No compliance advantage exists between the two options.

Contact Finish Specification: The 647123-3 features Tin-Lead contact finish on both mating and post surfaces. The 2-647123-3 features Tin contact finish on both surfaces. Both maintain 150.0µin (3.81µm) thickness specification. Tin contact finish is functionally equivalent to Tin-Lead finish for applications within the specified operating temperature range and voltage rating.

Packaging & Inventory Considerations: The 647123-3 is supplied in standard packaging with 1030 pieces in stock. The 2-647123-3 is supplied in Bulk packaging with 7250 pieces in stock. Selection depends on procurement volume requirements and supply chain availability.

Application Suitability: Both parts are suitable for general purpose and industrial applications requiring board-to-cable/wire connectivity with through-hole solder termination. No functional performance difference exists between the two options for equivalent circuit designs.

Frequently Asked Questions (FAQ)

Q: Can 2-647123-3 be used as a direct replacement for 647123-3 in existing designs?

A: Yes. The 2-647123-3 maintains identical electrical, mechanical, and environmental specifications. The primary differences are packaging format (Bulk versus standard) and contact finish material (Tin versus Tin-Lead). Both finishes meet the same performance requirements for the specified operating temperature range and voltage rating.

Q: What is the difference between Tin and Tin-Lead contact finishes in this connector series?

A: Both finishes provide equivalent electrical conductivity and corrosion resistance within the -55°C to 105°C operating range. Tin-Lead finish (647123-3) and Tin finish (2-647123-3) both maintain 150.0µin thickness and are functionally interchangeable for this application category.

Q: Are there any compatibility issues when mixing 647123-3 and 2-647123-3 in the same assembly?

A: No compatibility issues exist. Both parts share identical mating pitch (0.156"), contact geometry, shrouding configuration, and fastening mechanism. They can be used interchangeably within the same circuit board or cable assembly.

Q: Does packaging format affect the electrical or mechanical performance of these connectors?

A: No. Packaging format (standard versus Bulk) affects only procurement and handling procedures. Electrical performance, mechanical fit, and environmental ratings remain identical regardless of packaging configuration.

Q: What inventory advantage does 2-647123-3 provide over 647123-3?

A: The 2-647123-3 has 7250 pieces in stock compared to 1030 pieces for 647123-3. This higher inventory level may provide supply chain advantages for large-volume procurement requirements.

Q: Are both parts RoHS3 compliant?

A: Yes. Both 647123-3 and 2-647123-3 are ROHS3 Compliant and suitable for applications requiring lead-free or restricted substance compliance.

Q: What is the current rating for these connectors?

A: Current rating varies by wire gauge. Both parts maintain identical current handling specifications based on the wire gauge used in the mating cable or wire assembly.

Q: Can these connectors be used in applications exceeding 600VAC?

A: No. Both parts are rated for 600VAC maximum. Applications requiring higher voltage ratings require alternative connector designs outside this product series.