TE Connectivity 644511-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644511-3 is a 3-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 22 AWG discrete or ribbon cable. This connector features tin-lead contact finish, a closed-end design, and a locking ramp fastening mechanism. The part is currently active in production with 709 units in stock. Substitute parts are identified to address specific application requirements, including RoHS compliance needs and packaging format preferences.

Key Parameters

Parameter	Value
Connector Type	Rectangular Receptacle
Number of Positions	3
Pitch	0.100" (2.54mm)
Number of Rows	1
Contact Type	Female Socket
Cable Termination Method	IDC
Wire Gauge	22 AWG
Wire Type	Discrete or Ribbon Cable
Mounting Type	Free Hanging (In-Line), Right Angle
Fastening Type	Locking Ramp
Features	Closed End
Series	MTA-100

Substitute Part Grouping Explanation

The substitute part 4-644511-3 is functionally equivalent to the main part 644511-3 based on the following critical parameters that determine substitution compatibility:

Electrical and Mechanical Equivalence Criteria:

Identical connector type, position count, and pitch (0.100")
Identical contact type (female socket) and termination method (IDC)
Identical wire gauge (22 AWG) and wire type support (discrete or ribbon cable)
Identical mounting configuration (free hanging in-line, right angle)
Identical fastening mechanism (locking ramp)
Identical closed-end feature and color (red)
Identical contact finish thickness (80.0µin / 2.03µm)

Differentiation Factors:

Contact finish composition: tin-lead (644511-3) versus tin (4-644511-3)
RoHS compliance status: non-compliant (644511-3) versus ROHS3 compliant (4-644511-3)
Packaging format: standard (644511-3) versus cut tape (4-644511-3)
Inventory availability: 709 units (644511-3) versus 13,804 units (4-644511-3)

Parameter Comparison

Parameter	644511-3 (Main Part)	4-644511-3 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	MTA-100	MTA-100
Connector Type	Rectangular Receptacle	Rectangular Receptacle
Number of Positions	3	3
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	22 AWG	22 AWG
Features	Closed End	Closed End
Contact Finish	Tin-Lead	Tin
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)
Color	Red	Red
Product Status	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.69.8000	8536.69.8000
Packaging	Standard	Cut Tape (CT)
Inventory	709 Pcs	13,804 Pcs

Engineering Selection Recommendations

Selection Based on Regulatory Compliance:

The 644511-3 (tin-lead contact finish) is suitable for applications where RoHS compliance is not required or where legacy systems mandate tin-lead specifications. This part maintains active product status and is available in standard packaging.

The 4-644511-3 (tin contact finish) is the appropriate selection for applications requiring ROHS3 compliance. Both parts share identical electrical and mechanical specifications, connector geometry, and termination characteristics. The substitute part offers significantly higher inventory availability (13,804 units versus 709 units) and is supplied in cut tape packaging format.

Selection Based on Packaging Requirements:

Applications requiring cut tape packaging should specify 4-644511-3. Standard packaging applications may utilize either part based on compliance requirements.

Selection Based on Availability:

The 4-644511-3 substitute provides substantially greater stock availability, supporting higher-volume production requirements and reducing lead time risk.

Frequently Asked Questions (FAQ)

Q: Are the 644511-3 and 4-644511-3 mechanically interchangeable?

A: Yes. Both parts are identical in connector type, position count, pitch, contact configuration, mounting style, and fastening mechanism. They are mechanically interchangeable in all applications.

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

A: The contact finish composition differs between the two parts. The 644511-3 uses tin-lead, while the 4-644511-3 uses tin. Both maintain identical contact finish thickness (80.0µin / 2.03µm) and electrical performance characteristics. The primary distinction is regulatory compliance status.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS regulations, the 4-644511-3 (ROHS3 compliant) is the appropriate selection. For legacy systems or applications without RoHS requirements, either part is functionally suitable.

Q: Does the packaging format affect connector performance?

A: No. The cut tape (CT) packaging of the 4-644511-3 does not affect electrical or mechanical performance. Packaging format is a supply chain and handling consideration only.

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

A: Yes. Both the 644511-3 and 4-644511-3 support discrete or ribbon cable termination via IDC at 22 AWG wire gauge.

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

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

Q: Are there any electrical performance differences between the substitute parts?

A: No. Both parts are electrically equivalent. They share identical contact type, termination method, wire gauge support, and electrical specifications.

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