TE Connectivity 1-643819-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-643819-1 is an 11-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features a tin-lead contact finish, closed-end design, and polarizing key for secure mating. The part is currently active in production with 947 pieces in stock.

Substitute parts are identified when equivalent electrical and mechanical specifications are maintained across connector type, position count, pitch, termination method, wire gauge, and mounting configuration. Alternative part numbers may offer different contact finishes, packaging formats, or compliance certifications while preserving core functional compatibility.

Substiute Parts

1-643819-1

TE Connectivity AMP ConnectorsIn Stock: 10071-643819-1 Datasheet

Current PartRFQ

4-643819-1

TE Connectivity AMP ConnectorsIn Stock: 68674-643819-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 1-643819-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle)
• Number of positions (11)
• Pitch specification (0.156" / 3.96mm)
• Contact type (Female Socket)
• Cable termination method (IDC)
• Wire gauge (22 AWG)
• Mounting type (Free Hanging In-Line)
• Fastening type (Locking Ramp)
• Series designation (MTA-156)
• Features (Closed End, Polarizing Key)

Variable Parameters Permitting Substitution:

• Contact finish material (Tin-Lead vs. Tin)
• Contact finish thickness (when within specification range)
• Packaging format (Bulk vs. standard)
• RoHS compliance status
• REACH compliance status

The substitute part 4-643819-1 maintains all mandatory parameters while differing only in contact finish composition and compliance certifications, making it functionally equivalent for applications where these variations are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Part 1-643819-1 (Tin-Lead Contact Finish):

• Suitable for applications where tin-lead contact finish is specified or required
• RoHS non-compliant; appropriate for legacy systems or applications exempt from RoHS requirements
• REACH affected; compliance verification required for specific end-use applications
• Lower current inventory availability (947 units)

Part 4-643819-1 (Tin Contact Finish):

• RoHS compliant; suitable for applications subject to RoHS directive requirements
• Tin contact finish provides equivalent electrical performance with improved environmental compliance
• Higher inventory availability (6776 units) supports production scheduling and supply chain continuity
• REACH status vendor-undefined; clarification recommended for applications with strict REACH compliance requirements
• Identical electrical and mechanical specifications ensure direct functional substitution

Selection between these parts should be based on regulatory compliance requirements, end-use application standards, and supply chain availability. Both parts maintain identical connector functionality, pitch, position count, and termination characteristics.

Frequently Asked Questions (FAQ)

Q: Can 4-643819-1 be used as a direct replacement for 1-643819-1?

A: Yes, 4-643819-1 is functionally equivalent to 1-643819-1 for all electrical and mechanical applications. Both connectors share identical specifications for position count (11), pitch (0.156"), contact type (female socket), termination method (IDC), wire gauge (22 AWG), and mounting configuration. The primary difference is the contact finish material: 1-643819-1 uses tin-lead while 4-643819-1 uses tin. Selection depends on regulatory compliance requirements and application specifications.

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

A: Both finishes are applied at 80.0µin (2.03µm) thickness and provide equivalent electrical conductivity and contact performance. Tin-lead finish is used in legacy applications and systems not subject to RoHS restrictions. Tin finish is RoHS compliant and is required for applications subject to RoHS directive compliance. The choice between them is determined by regulatory requirements and application standards, not by electrical performance.

Q: Are these connectors compatible with ribbon cable?

A: Yes, both 1-643819-1 and 4-643819-1 support discrete or ribbon cable termination via IDC (Insulation Displacement Contact) method. The 22 AWG wire gauge specification applies to both cable types.

Q: What does the polarizing key feature provide?

A: The polarizing key is a mechanical feature that ensures correct mating orientation between the receptacle connector and its corresponding plug connector. This prevents incorrect insertion and protects against potential circuit damage or malfunction due to reversed polarity.

Q: Why is inventory availability different between these parts?

A: 4-643819-1 has significantly higher inventory (6776 units) compared to 1-643819-1 (947 units). This difference reflects market demand patterns and the shift toward RoHS-compliant components in modern applications. Higher availability of 4-643819-1 may support faster delivery and production scheduling.

Q: What does Moisture Sensitivity Level 1 mean?

A: MSL 1 (Unlimited) indicates that these connectors have unlimited shelf life and require no special moisture control during storage, handling, or transportation. No baking or desiccant packaging is required prior to assembly.

Q: Are both parts suitable for my application?

A: Compatibility depends on your specific regulatory and compliance requirements. If your application or end market requires RoHS compliance, use 4-643819-1. If your application permits or requires tin-lead contact finish, use 1-643819-1. Both parts are electrically and mechanically identical, so the selection criterion is compliance-based rather than performance-based.