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TE Connectivity 644461-2 Rectangular Connector Equivalent & Substitute Parts
Part Overview
The TE Connectivity 644461-2 is a 2-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 18 AWG discrete or ribbon cable. This connector features a closed end design with polarizing key and tin-lead contact finish.
The 644461-2 is classified as obsolete. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this connector type is specified or functionally required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle |
| Number of Positions | 2 |
| Pitch | 0.156" (3.96mm) |
| Number of Rows | 1 |
| Contact Type | Female Socket |
| Cable Termination | IDC |
| Wire Gauge | 18 AWG |
| Wire Type | Discrete or Ribbon Cable |
| Mounting Type | Free Hanging (In-Line) |
| Features | Closed End, Polarizing Key |
| Series | MTA-156 |
Substitute Part Grouping Explanation
Substitution of the 644461-2 is determined by strict equivalence across the following critical parameters:
- Connector Type & Contact Configuration: Receptacle with female socket contacts
- Position Count & Pitch: 2 positions at 0.156" (3.96mm) pitch
- Termination Method: IDC cable termination
- Wire Gauge Compatibility: 18 AWG
- Mechanical Interface: Free hanging in-line mounting with closed end and polarizing key
- Series Compatibility: MTA-156 series
The substitute part 3-644461-2 maintains identical electrical and mechanical specifications across all these parameters, ensuring direct functional equivalence.
Parameter Comparison
| Parameter | 644461-2 (Main Part) | 3-644461-2 (Substitute) |
|---|---|---|
| Manufacturer | TE Connectivity AMP Connectors | TE Connectivity AMP Connectors |
| Series | MTA-156 | MTA-156 |
| Connector Type | Receptacle | Receptacle |
| Contact Type | Female Socket | Female Socket |
| Number of Positions | 2 | 2 |
| Pitch | 0.156" (3.96mm) | 0.156" (3.96mm) |
| Number of Rows | 1 | 1 |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Cable Termination | IDC | IDC |
| Wire Type | Discrete or Ribbon Cable | Discrete or Ribbon Cable |
| Wire Gauge | 18 AWG | 18 AWG |
| Features | Closed End, Polarizing Key | Closed End, Polarizing Key |
| Contact Finish | Tin-Lead | Tin |
| Contact Finish Thickness | 80.0µin (2.03µm) | 80.0µin (2.03µm) |
| Color | Orange | Orange |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.69.8000 | 8536.69.8000 |
Engineering Selection Recommendations
Primary Substitute: 3-644461-2
The 3-644461-2 is the direct substitute for the obsolete 644461-2. Both parts share identical electrical and mechanical specifications, including connector type, position count, pitch, termination method, wire gauge, and mounting configuration.
Compliance Advantage: The 3-644461-2 is RoHS compliant and carries active product status, making it the preferred selection for new designs and ongoing production requirements. The main part 644461-2 is RoHS non-compliant and obsolete.
Contact Finish Difference: The 644461-2 features tin-lead contact finish, while the 3-644461-2 features tin contact finish. Both maintain identical contact finish thickness of 80.0µin (2.03µm), ensuring equivalent electrical performance and contact reliability.
Availability: The 3-644461-2 is available in bulk packaging with higher inventory levels (1077 pcs), supporting both prototype and production-volume requirements.
Frequently Asked Questions (FAQ)
Q: Can the 3-644461-2 directly replace the 644461-2 in existing applications?
A: Yes. The 3-644461-2 maintains identical electrical and mechanical specifications across all critical parameters: 2-position receptacle configuration, 0.156" pitch, IDC termination, 18 AWG wire gauge, free hanging in-line mounting, and closed end with polarizing key design. Direct substitution is supported.
Q: What is the difference between tin-lead and tin contact finishes?
A: The 644461-2 uses tin-lead contact finish, while the 3-644461-2 uses tin contact finish. Both finishes are applied at identical thickness (80.0µin / 2.03µm). The tin finish in the 3-644461-2 reflects RoHS compliance requirements. Contact electrical performance and reliability are equivalent.
Q: Why is the 644461-2 listed as obsolete?
A: The 644461-2 is obsolete due to its RoHS non-compliant tin-lead contact finish. The 3-644461-2 represents the current active product offering with RoHS compliance and identical functional specifications.
Q: Are there packaging differences between these parts?
A: The 644461-2 packaging is not specified in available documentation. The 3-644461-2 is supplied in bulk packaging. Both parts are identical in form, fit, and function.
Q: What is the MSL rating for these connectors?
A: Both the 644461-2 and 3-644461-2 carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity limitations for storage or handling.
Q: Can these connectors be used with both discrete and ribbon cable?
A: Yes. Both the 644461-2 and 3-644461-2 support discrete or ribbon cable termination via IDC method at 18 AWG wire gauge.
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