TE Connectivity 641537-3 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 641537-3 is a 3-position rectangular receptacle connector from the MTA-100 series, designed for IDC (Insulation Displacement Contact) termination with 28 AWG wire. This connector features tin-plated female socket contacts, a closed-end design, and supports both discrete and ribbon cable configurations.

The 641537-3 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this connector specification.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line), Right Angle
Cable Termination	IDC
Wire Gauge	28 AWG
Contact Finish	Tin
Contact Finish Thickness	80.0µin (2.03µm)
Features	Closed End
Series	MTA-100

Substitute Part Grouping Explanation

Substitution of the 641537-3 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for connector type, contact configuration, position count, pitch, mounting orientation, termination method, wire gauge compatibility, and contact finish properties.

The following parameters establish substitution validity:

Connector Type: Receptacle
Contact Type: Female Socket
Number of Positions: 3
Pitch: 0.100" (2.54mm)
Mounting Type: Free Hanging (In-Line), Right Angle
Cable Termination: IDC
Wire Gauge: 28 AWG
Contact Finish: Tin
Contact Finish Thickness: 80.0µin (2.03µm)
Series: MTA-100

Parameter Comparison

Parameter	641537-3 (Main Part)	3-641537-3 (Substitute)	Match Status
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Identical
Category	Rectangular Connectors	Rectangular Connectors	Identical
Series	MTA-100	MTA-100	Identical
Connector Type	Receptacle	Receptacle	Identical
Contact Type	Female Socket	Female Socket	Identical
Number of Positions	3	3	Identical
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Identical
Number of Rows	1	1	Identical
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle	Identical
Fastening Type	Locking Ramp	Locking Ramp	Identical
Cable Termination	IDC	IDC	Identical
Wire Type	Discrete or Ribbon Cable	Discrete or Ribbon Cable	Identical
Wire Gauge	28 AWG	28 AWG	Identical
Features	Closed End	Closed End	Identical
Contact Finish	Tin	Tin	Identical
Contact Finish Thickness	80.0µin (2.03µm)	80.0µin (2.03µm)	Identical
Color	Green	Green	Identical
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute is Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
ECCN	EAR99	EAR99	Identical
HTSUS	8536.69.8000	8536.69.8000	Identical

Engineering Selection Recommendations

The 3-641537-3 is a direct functional equivalent to the 641537-3 across all electrical and mechanical parameters. Both parts are manufactured by TE Connectivity and belong to the MTA-100 series with identical connector specifications.

The 3-641537-3 offers the following advantages:

Active product status ensures ongoing availability and manufacturing support
ROHS3 compliance satisfies current environmental and regulatory requirements
Higher inventory availability (3832 pieces in stock versus 705 pieces for the main part)
Bulk packaging option for production and assembly operations

The 3-641537-3 is suitable for direct substitution in all applications where the 641537-3 was originally specified, with no modifications to circuit design, assembly procedures, or mating connector requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3-641537-3 be used as a direct replacement for the 641537-3?

A: Yes. The 3-641537-3 is electrically and mechanically equivalent to the 641537-3. All connector specifications, including position count, pitch, contact type, termination method, and wire gauge compatibility, are identical.

Q: What is the difference between the 641537-3 and 3-641537-3?

A: The primary differences are product status and regulatory compliance. The 641537-3 is obsolete and RoHS non-compliant, while the 3-641537-3 is an active product with ROHS3 compliance. The packaging differs (bulk for the substitute), and inventory levels vary. All functional specifications remain identical.

Q: Are there any compatibility concerns when substituting the 3-641537-3 for the 641537-3?

A: No compatibility concerns exist. Both connectors are MTA-100 series receptacles with identical mechanical and electrical properties. Mating connectors, cable termination procedures, and mounting configurations remain unchanged.

Q: Does the ROHS3 compliance of the 3-641537-3 affect its performance?

A: No. ROHS3 compliance indicates adherence to environmental and hazardous substance restrictions. This compliance status does not alter the electrical performance or mechanical function of the connector.

Q: What wire gauges are compatible with both the 641537-3 and 3-641537-3?

A: Both connectors support 28 AWG wire for IDC termination. Both also support discrete or ribbon cable configurations.

Q: Is the contact finish identical between the two parts?

A: Yes. Both parts feature tin-plated contacts with a finish thickness of 80.0µin (2.03µm).

Q: What is the pitch specification for these connectors?

A: Both connectors have a pitch of 0.100" (2.54mm), which is the standard spacing for MTA-100 series rectangular connectors.

Q: Can these connectors be used in both in-line and right-angle mounting configurations?

A: Yes. Both the 641537-3 and 3-641537-3 support free-hanging mounting in both in-line and right-angle orientations.

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