Equivalent & Substitute Parts for Molex 0524840310

Part Overview

The Molex 0524840310 is a 3-position rectangular receptacle connector with IDC (Insulation Displacement Contact) termination, designed for 26-28 AWG discrete wire applications. This connector features a 0.079" (2.00mm) pitch and tin contact finish, operating as a free-hanging in-line component with detent lock fastening.

The 0524840310 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this connector type.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch	0.079" (2.00mm)
Number of Rows	1
Cable Termination	IDC
Wire Gauge	26-28 AWG
Contact Finish	Tin
Mounting Type	Free Hanging (In-Line)
Color	Natural
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the Molex 0524840310 are qualified based on the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count & Pitch: 3 positions at 0.079" (2.00mm) pitch
Termination Method: IDC cable termination for discrete wire
Wire Gauge Compatibility: Support for 26-28 AWG wire range
Contact Material & Finish: Tin-plated contacts
Mounting Configuration: Free-hanging in-line orientation
Regulatory Compliance: ROHS3 compliance and MSL rating

The identified substitutes maintain these core electrical and mechanical parameters, ensuring functional equivalence within the specified application envelope.

Parameter Comparison

Parameter	Molex 0524840310	JST 03KR-D6S-P	TE Connectivity 173977-3
Manufacturer	Molex	JST Sales America Inc.	TE Connectivity AMP Connectors
Connector Type	Receptacle	Socket	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket
Number of Positions	3	3	3
Pitch	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	1	1	1
Cable Termination	IDC	IDC	IDC
Wire Gauge	26-28 AWG	26 AWG	26-28 AWG
Contact Finish	Tin	Tin	Tin
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line)
Color	Natural	Natural	Natural
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

TE Connectivity 173977-3 is the primary substitute for the Molex 0524840310. Both components are receptacle connectors with identical pitch, position count, wire gauge range, and contact finish specifications. The TE Connectivity part maintains active product status with full ROHS3 compliance and unlimited MSL rating, ensuring long-term availability and regulatory alignment.

JST 03KR-D6S-P provides an alternative substitute with equivalent electrical characteristics. This part is classified as a socket connector and supports 26 AWG wire gauge (within the 26-28 AWG range of the original). The JST component offers mounting flexibility with both free-hanging in-line and right-angle options. Active product status and ROHS3 compliance are confirmed. Wire gauge support is limited to 26 AWG, which may require evaluation for applications requiring 28 AWG compatibility.

Both substitutes maintain the critical functional parameters: 3-position configuration, 2.00mm pitch, IDC termination, tin contact finish, and female socket contact type. Selection between these options depends on specific mounting requirements and wire gauge constraints within the application.

Frequently Asked Questions (FAQ)

Q: What makes the TE Connectivity 173977-3 and JST 03KR-D6S-P functionally equivalent to the Molex 0524840310?

A: All three connectors share the core specifications that determine substitutability: 3-position configuration, 0.079" (2.00mm) pitch, IDC cable termination, tin-plated female socket contacts, and support for 26 AWG wire gauge. These parameters ensure mechanical and electrical compatibility within the connector interface.

Q: Are there wire gauge differences between the substitutes?

A: The Molex 0524840310 and TE Connectivity 173977-3 both support 26-28 AWG wire gauge. The JST 03KR-D6S-P is specified for 26 AWG only. Applications requiring 28 AWG termination should prioritize the TE Connectivity part or verify JST compatibility with the specific wire gauge in use.

Q: What is the difference between "Receptacle" and "Socket" connector types in this comparison?

A: Both designations refer to female contact connectors designed to receive male pins. The terminology varies by manufacturer convention. Functionally, both the Molex receptacle and JST socket provide equivalent female contact interfaces for IDC wire termination.

Q: Can the JST 03KR-D6S-P be used in applications requiring in-line mounting only?

A: The JST 03KR-D6S-P supports both free-hanging in-line and right-angle mounting configurations. Applications requiring in-line mounting exclusively can utilize this part; the right-angle capability provides additional design flexibility without compromising in-line functionality.

Q: Are all three parts RoHS3 compliant?

A: Yes. The Molex 0524840310, TE Connectivity 173977-3, and JST 03KR-D6S-P are all ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level), meeting current regulatory requirements for electronic component applications.

Q: Why is the Molex 0524840310 classified as obsolete?

A: Obsolete status indicates the part is no longer in active production by the manufacturer. The identified substitutes from TE Connectivity and JST maintain active product status, ensuring ongoing availability and support for new designs or replacement requirements.

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