TE Connectivity 644540-7 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644540-7 is a 7-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, free hanging in-line or right angle mounting, and locking ramp fastening. The part is currently active in production with 1014 units in stock. Substitute parts are identified to address specific compliance requirements, packaging preferences, or inventory availability while maintaining functional equivalence within the MTA-100 connector family.

Substiute Parts

644540-7

TE Connectivity AMP ConnectorsIn Stock: 1068644540-7 Datasheet

Current PartRFQ

3-644540-7

TE Connectivity AMP ConnectorsIn Stock: 96733-644540-7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 3-644540-7 is functionally equivalent to the main part 644540-7 based on the following critical parameters that determine substitution validity:

Matching Parameters:

• Connector type (Receptacle)
• Number of positions (7)
• Pitch (0.100" / 2.54mm)
• Number of rows (1)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge (22 AWG)
• Wire type compatibility (Discrete or Ribbon Cable)
• Mounting type (Free Hanging In-Line, Right Angle)
• Fastening type (Locking Ramp)
• Contact finish thickness (80.0µin / 2.03µm)
• Series designation (MTA-100)
• Color (Red)

Differentiating Parameters:

• Contact finish material (Tin-Lead vs. Tin)
• RoHS compliance status (Non-compliant vs. Compliant)
• Packaging format (Standard vs. Bulk)
• Inventory availability

The substitution is valid because both parts maintain identical mechanical and electrical interface specifications within the MTA-100 connector family.

Parameter Comparison

Engineering Selection Recommendations

Part 644540-7 (Tin-Lead Contact Finish): Select this part for applications where RoHS non-compliance is acceptable or where legacy system compatibility with tin-lead finishes is required. This part is suitable for non-regulated markets or applications without RoHS mandates. Current inventory of 1014 units supports immediate availability.

Part 3-644540-7 (Tin Contact Finish): Select this part for applications requiring RoHS compliance. The tin contact finish meets environmental and regulatory standards applicable to EU markets and regulated industries. This part is the preferred choice for new designs and applications subject to RoHS directives. Higher inventory availability (9600 units) ensures supply continuity. Bulk packaging format supports high-volume production requirements.

Both parts maintain identical mechanical and electrical interface specifications, ensuring direct substitution within the MTA-100 connector family without design modification.

Frequently Asked Questions (FAQ)

Q: Can 3-644540-7 be used as a direct replacement for 644540-7?

A: Yes. Both parts are functionally equivalent within the MTA-100 connector series. They share identical mechanical dimensions, pitch, contact configuration, mounting type, and IDC termination method for 22 AWG cable. The primary difference is the contact finish material (tin-lead vs. tin) and RoHS compliance status.

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

A: The 644540-7 features a tin-lead contact finish, while the 3-644540-7 features a tin contact finish. Both finishes are applied at 80.0µin (2.03µm) thickness. The tin finish in 3-644540-7 complies with RoHS regulations, whereas the tin-lead finish in 644540-7 does not.

Q: Are there mechanical compatibility issues when substituting between these parts?

A: No. Both parts maintain identical mechanical specifications: 7-position, 0.100" pitch, single-row configuration, free hanging in-line or right angle mounting, and locking ramp fastening. They are mechanically interchangeable.

Q: Does the contact finish affect electrical performance?

A: Both contact finishes provide equivalent electrical performance at the specified contact finish thickness of 80.0µin (2.03µm). Selection should be based on compliance requirements and application standards rather than electrical performance differences.

Q: What packaging differences exist between these parts?

A: The 644540-7 is supplied in standard packaging, while the 3-644540-7 is supplied in bulk packaging. Bulk packaging is typically used for high-volume production environments.

Q: Which part should be selected for new designs?

A: For new designs, select 3-644540-7 due to its RoHS compliance status and higher inventory availability (9600 units vs. 1014 units). This part aligns with current regulatory requirements and ensures long-term supply availability.

Q: Are both parts suitable for IDC termination with 22 AWG cable?

A: Yes. Both parts support IDC termination with 22 AWG discrete or ribbon cable. The IDC termination method and wire gauge specifications are identical across both parts.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.