TE Connectivity 640623-8 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 640623-8 is an 8-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 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 becomes increasingly difficult. Identifying equivalent and substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this connector type.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	8
Pitch	0.100" (2.54mm)
Number of Rows	1
Contact Type	Female Socket
Cable Termination	IDC
Wire Gauge	28 AWG
Mounting Type	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp
Series	MTA-100

Substitute Part Grouping Explanation

Substitution of rectangular connectors is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Connector type (Receptacle)
Number of positions (8)
Pitch spacing (0.100" / 2.54mm)
Number of rows (1)
Contact type (Female Socket)
Cable termination method (IDC)
Wire gauge compatibility (28 AWG)
Mounting configuration (Free Hanging, Right Angle)
Fastening mechanism (Locking Ramp)
Series designation (MTA-100)

The substitute part 3-640623-8 maintains identical electrical and mechanical specifications across all critical parameters. The primary differences are contact finish composition (tin versus tin-lead) and product status (active versus obsolete).

Parameter Comparison

Parameter	640623-8 (Main Part)	3-640623-8 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Receptacle	Receptacle
Number of Positions	8	8
Contact Type	Female Socket	Female Socket
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp	Locking Ramp
Cable Termination	IDC	IDC
Wire Type	Discrete or Ribbon Cable	Discrete or Ribbon Cable
Wire Gauge	28 AWG	28 AWG
Features	Feed Through	Feed Through
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Green	Green
Base Product Number	640623	640623
Product Status	Obsolete	Active
Contact Finish	Tin-Lead	Tin
RoHS Status	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.8000	8536.69.8000

Engineering Selection Recommendations

For New Designs and Procurement:

The substitute part 3-640623-8 is the appropriate selection for new applications and ongoing procurement. This part maintains active product status with TE Connectivity, ensuring continued availability and supply chain stability. The part is RoHS compliant, meeting current regulatory requirements for electronic components in most jurisdictions.

For Legacy System Maintenance:

The original 640623-8 remains functionally equivalent for existing installations where tin-lead contact finish is specified or required. However, due to obsolete status, sourcing becomes progressively more difficult. The 3-640623-8 substitute provides identical mechanical and electrical performance with the advantage of active production status.

Contact Finish Consideration:

The primary technical difference between the two parts is the contact finish composition. The 640623-8 features tin-lead plating, while the 3-640623-8 features tin plating. Both maintain identical contact finish thickness (80.0µin / 2.03µm) and are suitable for IDC termination with 28 AWG cable.

Frequently Asked Questions (FAQ)

Q: Are the 640623-8 and 3-640623-8 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including pitch (0.100"), number of positions (8), mounting type (Free Hanging, Right Angle), and fastening mechanism (Locking Ramp). They are direct mechanical substitutes.

Q: Are the 640623-8 and 3-640623-8 electrically interchangeable?

A: Yes. Both connectors feature identical electrical specifications including contact type (Female Socket), wire gauge compatibility (28 AWG), cable termination method (IDC), and contact finish thickness (80.0µin). They are direct electrical substitutes.

Q: What is the significance of the contact finish difference between tin-lead and tin?

A: Both contact finishes are suitable for IDC termination and maintain equivalent contact finish thickness. The tin finish in the 3-640623-8 provides RoHS compliance, while the tin-lead finish in the 640623-8 is non-compliant. Selection depends on regulatory requirements for the application.

Q: Why is the 640623-8 classified as obsolete?

A: Obsolete status indicates that TE Connectivity has discontinued active production of this part. The 3-640623-8 represents the active production equivalent within the MTA-100 series.

Q: Can the 3-640623-8 be used as a direct replacement in existing assemblies designed for the 640623-8?

A: Yes. The 3-640623-8 is a direct substitute with identical mechanical and electrical specifications. No design modifications are required for substitution.

Q: What is the packaging difference between these parts?

A: The 640623-8 packaging specification is not provided in the technical data. The 3-640623-8 is supplied in bulk packaging.

Q: Are both parts suitable for discrete and ribbon cable termination?

A: Yes. Both connectors support discrete or ribbon cable termination via IDC method at 28 AWG wire gauge.

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

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

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