Molex 0026503071 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0026503071 is an active vertical rectangular connector header designed for through-hole mounting applications. This 7-position connector operates at 0.156" (3.96mm) pitch and features shrouded single-wall construction with friction lock fastening. The connector is manufactured from brass with tin plating and polyester insulation rated UL94 V-0. Due to supply chain considerations, manufacturing transitions, or application-specific requirements, equivalent substitute parts from TE Connectivity AMP Connectors are available within the MTA-156 series that maintain functional compatibility across the same pitch and position specifications.

Substiute Parts

0026503071

MolexIn Stock: 12060026503071 Datasheet

Current PartRFQ

640445-7

TE Connectivity AMP ConnectorsIn Stock: 1632640445-7 Datasheet

MFR RecommendedRFQ

644752-7

TE Connectivity AMP ConnectorsIn Stock: 1674644752-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0026503071 is determined by the following critical parameters that must remain constant:

• Pitch - Mating: 0.156" (3.96mm)
• Number of Positions: 7
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Friction Lock
• Shrouding: Shrouded - 1 Wall
• Contact Finish - Mating: Tin
• Contact Finish - Post: Tin
• Material Flammability Rating: UL94 V-0

The TE Connectivity AMP Connectors MTA-156 series parts 640445-7 and 644752-7 satisfy all critical substitution parameters. Both parts maintain identical pitch, position count, row configuration, mounting method, and electrical interface characteristics. Variations in contact length and insulation height represent design differences within acceptable mechanical envelope tolerances for board-to-cable/wire applications. Both substitute parts carry active product status, ROHS3 compliance, and UL94 V-0 flammability rating.

Parameter Comparison

Engineering Selection Recommendations

Both TE Connectivity substitute parts maintain active product status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original Molex 0026503071. The MTA-156 series connectors carry UL94 V-0 flammability certification matching the original specification.

Selection between TE Connectivity 640445-7 and 644752-7 depends on post-length requirements for specific PCB stack-up configurations. The 640445-7 features a 0.125" (3.18mm) post length, while the 644752-7 provides a 0.175" (4.45mm) post length. Both accommodate standard through-hole solder termination processes. The TE Connectivity parts specify operating temperature range of -55°C to 105°C and 600VAC voltage rating, providing defined electrical performance parameters for applications requiring these specifications.

Frequently Asked Questions (FAQ)

Q: Can TE Connectivity 640445-7 and 644752-7 be used interchangeably with Molex 0026503071?

A: Both TE Connectivity parts are functionally equivalent substitutes for the Molex 0026503071 within the critical parameters of pitch, position count, contact type, mounting method, and fastening mechanism. Selection between the two TE Connectivity options depends on post-length requirements for your specific PCB design.

Q: What is the primary difference between TE Connectivity 640445-7 and 644752-7?

A: The primary difference is contact post length. The 640445-7 has a 0.125" (3.18mm) post length, while the 644752-7 has a 0.175" (4.45mm) post length. Both maintain identical mating contact length of 0.400" (10.16mm) and overall insulation height of 0.425" (10.80mm).

Q: Are there mechanical envelope differences between the Molex and TE Connectivity parts?

A: Yes. The Molex 0026503071 specifies an insulation height of 0.500" (12.70mm), while both TE Connectivity substitutes specify 0.425" (10.80mm). The TE Connectivity parts also feature reduced overall contact length. These differences are within acceptable mechanical tolerances for board-to-cable/wire connector applications but require verification against your specific PCB layout and mating connector specifications.

Q: Do all three parts carry the same compliance certifications?

A: All three parts are ROHS3 compliant, carry UL94 V-0 flammability rating, and maintain MSL 1 (Unlimited) moisture sensitivity level. The TE Connectivity parts provide specified operating temperature range (-55°C to 105°C) and voltage rating (600VAC), while the Molex part does not specify these parameters in the provided data.

Q: What contact material differences exist between these parts?

A: The Molex 0026503071 uses brass contacts, while both TE Connectivity substitutes use copper alloy contacts. Both are tin-plated on mating and post surfaces. Copper alloy contacts provide equivalent electrical performance for standard applications.

Q: Are there insulation material differences?

A: Yes. The Molex 0026503071 uses polyester insulation (black), while both TE Connectivity parts use thermoplastic glass-filled insulation (natural color). Both materials meet UL94 V-0 flammability requirements.