TE Connectivity 644043-4 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644043-4 is a 4-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 26 AWG discrete or ribbon cable. This connector features gold-plated female socket contacts, a closed-end design, and a locking ramp fastening mechanism. The part is currently active in production with RoHS compliance certification. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging requirements differ.

Key Parameters

Parameter	Value
Connector Type	Rectangular Receptacle
Number of Positions	4
Pitch	0.100" (2.54mm)
Contact Type	Female Socket
Wire Gauge	26 AWG
Cable Termination Method	IDC
Contact Finish	Gold
Fastening Type	Locking Ramp
Series	MTA-100

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 644043-4 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part 3-644043-4 qualifies as a direct equivalent based on the following matching criteria:

Matching Parameters:

Identical connector type (rectangular receptacle)
Identical number of positions (4)
Identical pitch specification (0.100" / 2.54mm)
Identical contact type (female socket)
Identical wire gauge rating (26 AWG)
Identical cable termination method (IDC)
Identical contact finish material and thickness (gold, 30.0µin)
Identical fastening mechanism (locking ramp)
Identical series designation (MTA-100)
Identical color (blue)
Identical moisture sensitivity level (MSL 1)

The primary distinction between these parts is packaging configuration. The main part number 644043-4 is supplied in standard packaging, while the substitute 3-644043-4 is supplied in bulk packaging. Both parts maintain identical electrical performance and mechanical compatibility.

Parameter Comparison

Parameter	644043-4 (Main)	3-644043-4 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Rectangular Receptacle	Rectangular Receptacle
Number of Positions	4	4
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	26 AWG	26 AWG
Features	Closed End	Closed End
Contact Finish	Gold	Gold
Contact Finish Thickness	30.0µin (0.76µm)	30.0µin (0.76µm)
Color	Blue	Blue
Base Product Number	644043	644043
Product Status	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.69.8000	8536.69.8000
Packaging	Standard	Bulk

Engineering Selection Recommendations

Both the TE Connectivity 644043-4 and its substitute 3-644043-4 are active production parts with full regulatory compliance. The 644043-4 carries RoHS Compliant certification, while the 3-644043-4 carries ROHS3 Compliant certification, indicating enhanced compliance standards for the substitute part. Both parts maintain MSL 1 rating, indicating no moisture sensitivity restrictions during storage and handling.

Selection between these parts should be based on packaging requirements and supply chain availability. The standard packaging of 644043-4 is suitable for applications requiring individual unit handling or smaller quantity orders. The bulk packaging of 3-644043-4 is appropriate for high-volume manufacturing environments or applications requiring larger quantity procurement. Both parts are electrically and mechanically interchangeable within the MTA-100 series connector ecosystem.

Frequently Asked Questions (FAQ)

Q: Are the 644043-4 and 3-644043-4 electrically identical?

A: Yes. Both parts feature identical electrical specifications including 4-position configuration, 0.100" pitch, 26 AWG wire gauge rating, gold contact finish with 30.0µin thickness, and IDC termination method. They perform identically in circuit applications.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging configuration. The 644043-4 is supplied in standard packaging, while the 3-644043-4 is supplied in bulk packaging. All electrical and mechanical specifications remain identical.

Q: Can I substitute 3-644043-4 for 644043-4 in my assembly?

A: Yes. The 3-644043-4 is a direct substitute for 644043-4. Both parts are mechanically compatible and electrically equivalent within the MTA-100 series.

Q: What does the "3-" prefix in 3-644043-4 indicate?

A: The "3-" prefix designates the bulk packaging variant of the base product number 644043. The core connector specifications remain unchanged.

Q: Are there any compliance differences between these parts?

A: The 644043-4 carries RoHS Compliant certification, while the 3-644043-4 carries ROHS3 Compliant certification. ROHS3 represents an updated compliance standard. Both parts meet regulatory requirements for their respective designations.

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

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These connectors can be stored and handled without special moisture control measures.

Q: Can these connectors be used with both discrete and ribbon cable?

A: Yes. Both the 644043-4 and 3-644043-4 support discrete or ribbon cable termination via IDC method at 26 AWG wire gauge.

Q: What is the fastening mechanism for these connectors?

A: Both parts use a locking ramp fastening type, providing secure mechanical retention in mated connector pairs.

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