TE Connectivity 640435-6 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640435-6 is a 6-position rectangular receptacle connector from the MTA-156 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG discrete or ribbon cable. This connector features tin-lead contact finish and is classified as obsolete product status.

Due to its obsolete classification, locating original inventory may present supply chain challenges. An active equivalent substitute is available that maintains functional compatibility while offering improved compliance status and continued manufacturing support.

Key Parameters

Parameter	Value
Connector Type	Rectangular Receptacle
Number of Positions	6
Pitch	0.156" (3.96mm)
Cable Termination Method	IDC (Insulation Displacement Contact)
Wire Gauge	26 AWG
Contact Type	Female Socket
Mounting Type	Free Hanging (In-Line)
Number of Rows	1
Features	Closed End
Series	MTA-156

Substitute Part Grouping Explanation

Substitution eligibility for the 640435-6 is determined by the following critical parameters that must remain constant:

Connector Type & Series: Rectangular receptacle from MTA-156 series
Position Count: 6 positions
Pitch Specification: 0.156" (3.96mm)
Cable Termination: IDC method
Wire Gauge Compatibility: 26 AWG
Contact Configuration: Female socket, single row
Mounting Style: Free hanging in-line
Mechanical Features: Closed end design

The substitute part 3-640435-6 maintains all these critical parameters, ensuring mechanical and electrical compatibility. The primary difference is the contact finish specification (tin versus tin-lead) and product status transition from obsolete to active manufacturing.

Parameter Comparison

Parameter	640435-6 (Main Part)	3-640435-6 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-156	MTA-156
Connector Type	Rectangular Receptacle	Rectangular Receptacle
Number of Positions	6	6
Pitch	0.156" (3.96mm)	0.156" (3.96mm)
Contact Type	Female Socket	Female Socket
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	26 AWG	26 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Blue	Blue
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.69.8000	8536.69.8000

Engineering Selection Recommendations

For New Designs and Ongoing Production:

The substitute part 3-640435-6 is the appropriate selection for all new applications and ongoing production requirements. This part maintains identical mechanical and electrical specifications while offering active product status and ROHS3 compliance. The transition from tin-lead to tin contact finish does not affect functional compatibility within the MTA-156 series framework.

For Legacy System Maintenance:

The original 640435-6 remains functionally equivalent for existing installations where RoHS non-compliance is not a regulatory constraint. However, due to obsolete status, procurement may be limited to available inventory. The 3-640435-6 substitute provides a direct functional replacement with improved supply chain continuity.

Compliance Considerations:

The 3-640435-6 substitute achieves ROHS3 compliance, addressing regulatory requirements for new equipment designs and markets with RoHS mandates. Both parts maintain identical ECCN and HTSUS classifications, ensuring consistent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Are the 640435-6 and 3-640435-6 mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.156"), position count (6), mounting type (free hanging in-line), and closed-end design. They are mechanically interchangeable within MTA-156 series applications.

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

A: Both contact finishes are applied at identical thickness (80.0µin / 2.03µm) and provide equivalent electrical performance in IDC termination applications. The tin finish in the substitute part eliminates lead content, addressing RoHS compliance requirements.

Q: Can I use the 3-640435-6 in existing designs currently specified for 640435-6?

A: Yes. The substitute part maintains all critical electrical and mechanical parameters. Existing designs require no modification for this substitution.

Q: Why is the original 640435-6 classified as obsolete?

A: Obsolete status indicates TE Connectivity has discontinued active manufacturing. The 3-640435-6 represents the current active equivalent within the MTA-156 series.

Q: Are there packaging differences between these parts?

A: The 640435-6 is supplied without specified packaging designation, while the 3-640435-6 is supplied in bulk packaging. Both are identical in connector specification and performance.

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

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity constraints for storage, handling, or assembly processes.

Q: Do both parts support discrete and ribbon cable termination?

A: Yes. Both the 640435-6 and 3-640435-6 support IDC termination for discrete or ribbon cable at 26 AWG wire gauge.

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