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TE Connectivity 640426-3 Rectangular Connector Equivalent & Substitute Parts
Part Overview
The TE Connectivity 640426-3 is a 3-position rectangular receptacle connector from the MTA-156 series, designed for discrete wire termination using insulation displacement contact (IDC) technology. This connector features tin-plated female socket contacts rated for 18 AWG wire gauge and operates with a 0.156" pitch configuration.
The 640426-3 is classified as obsolete product status. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for systems utilizing this connector specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle |
| Contact Type | Female Socket |
| Number of Positions | 3 |
| Pitch | 0.156" (3.96mm) |
| Number of Rows | 1 |
| Cable Termination Method | IDC |
| Wire Gauge | 18 AWG |
| Contact Finish | Tin |
| Mounting Type | Free Hanging (In-Line) |
| Series | MTA-156 |
Substitute Part Grouping Explanation
Substitute parts for the 640426-3 are identified based on electrical and mechanical parameter equivalence within the MTA-156 series. The following parameters establish substitution validity:
- Connector Type & Contact Configuration: Receptacle with female socket contacts
- Position Count & Pitch: 3-position configuration at 0.156" (3.96mm) pitch
- Termination Technology: IDC cable termination for discrete wire
- Wire Gauge Compatibility: 18 AWG wire gauge rating
- Contact Material & Finish: Tin-plated contacts with 80.0µin (2.03µm) finish thickness
- Mounting & Fastening: Free hanging in-line mounting with locking ramp fastening
Parts meeting all these parameters are electrically and mechanically interchangeable with the original 640426-3 specification.
Parameter Comparison
| Parameter | 640426-3 (Main Part) | 3-640426-3 (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 | 3 | 3 |
| Pitch | 0.156" (3.96mm) | 0.156" (3.96mm) |
| Number of Rows | 1 | 1 |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Fastening Type | Locking Ramp | Locking Ramp |
| Cable Termination | IDC | IDC |
| Wire Type | Discrete | Discrete |
| Wire Gauge | 18 AWG | 18 AWG |
| Features | Closed End | Closed End |
| Contact Finish | Tin | Tin |
| Contact Finish Thickness | 80.0µin (2.03µm) | 80.0µin (2.03µm) |
| Color | Orange | Orange |
| Base Product Number | 640426 | 640426 |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.69.8000 | 8536.69.8000 |
Engineering Selection Recommendations
The 3-640426-3 is the direct substitute for the obsolete 640426-3 connector. Both parts share identical electrical and mechanical specifications within the MTA-156 series, ensuring full functional compatibility.
Product Status Consideration: The 640426-3 is classified as obsolete, while the 3-640426-3 maintains active product status with significantly higher inventory availability (10,544 pieces versus 1,085 pieces). Selection of the active substitute part ensures long-term supply chain reliability.
Compliance Status: The 3-640426-3 is ROHS3 compliant, whereas the original 640426-3 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the substitute part satisfies current environmental compliance standards. Both parts maintain identical moisture sensitivity level (MSL 1) and ECCN classification (EAR99).
Packaging Difference: The substitute part is supplied in bulk packaging, compared to the original part's unspecified packaging configuration. This packaging difference does not affect electrical or mechanical performance.
Frequently Asked Questions (FAQ)
Q: Are the 640426-3 and 3-640426-3 connectors electrically interchangeable?
A: Yes. Both connectors share identical electrical specifications including 3-position configuration, 0.156" pitch, 18 AWG wire gauge rating, tin contact finish, and IDC termination technology. They are direct electrical equivalents.
Q: What is the mechanical compatibility between these two parts?
A: The connectors are mechanically identical. Both feature free hanging in-line mounting, locking ramp fastening, closed-end design, and orange color. They mount and interface identically in applications designed for the MTA-156 series.
Q: Why is the 3-640426-3 recommended over the original 640426-3?
A: The 3-640426-3 is classified as active product status with substantially higher inventory availability. The original 640426-3 is obsolete. For new designs and ongoing production, the active substitute ensures supply continuity and regulatory compliance (ROHS3).
Q: Does the bulk packaging of the 3-640426-3 affect its performance?
A: No. Packaging configuration does not influence connector electrical or mechanical performance. Bulk packaging is a supply and logistics consideration only.
Q: Are both connectors suitable for 18 AWG discrete wire termination?
A: Yes. Both connectors are rated for 18 AWG wire gauge using IDC termination technology. Wire gauge compatibility is identical between the two parts.
Q: What is the moisture sensitivity level for these connectors?
A: Both the 640426-3 and 3-640426-3 are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
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