Equivalent & Substitute Parts for Molex 0940304921

Part Overview

The Molex 0940304921 is a 0.110" (2.79mm) Quick Connect Female crimp connector designed for 16-24 AWG wire gauges in non-insulated applications. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across tab dimensions, termination method, and electrical contact specifications while accommodating the wire gauge range requirements of the original design.

Key Parameters

Parameter	Value
Manufacturer Part Number	0940304921
Manufacturer	Molex
Category	Terminals
Tab Width	0.110" (2.79mm)
Tab Thickness	0.020" (0.51mm)
Wire Gauge Range	16-24 AWG
Termination Type	Crimp
Gender	Female
Insulation	Non-Insulated
Contact Material	Brass
Contact Finish	Tin
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0940304921 is determined by strict alignment of the following parameters:

Tab Width: 0.110" (2.79mm) — must match exactly for connector receptacle compatibility
Tab Thickness: 0.020" (0.51mm) — must match exactly for proper electrical contact and mechanical fit
Termination Method: Crimp — must remain consistent
Gender: Female — must remain consistent
Contact Material and Finish: Brass with Tin plating — must match for electrical performance
Insulation Type: Non-Insulated — must remain consistent
Wire Gauge Compatibility: The substitute must accommodate the wire gauge range of the application

Two substitute parts meet these criteria with documented compatibility:

TE Connectivity 1544545-3 — Supports 17-24 AWG (overlaps upper range of original 16-24 AWG specification)
TE Connectivity 42068-1 — Supports 18-22 AWG (overlaps mid-to-upper range of original specification)

Parameter Comparison

Parameter	Molex 0940304921	TE Connectivity 1544545-3	TE Connectivity 42068-1
Tab Width	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)
Tab Thickness	0.020" (0.51mm)	0.020" (0.51mm)	0.020" (0.51mm)
Tab Length	0.237" (6.02mm)	0.264" (6.70mm)	0.250" (6.35mm)
Overall Length	0.520" (13.21mm)	0.551" (14.00mm)	0.635" (16.13mm)
Wire Gauge Range	16-24 AWG	17-24 AWG	18-22 AWG
Termination	Crimp	Crimp	Crimp
Gender	Female	Female	Female
Contact Material	Brass	Brass	Brass
Contact Finish	Tin	Tin	Tin
Insulation	Non-Insulated	Non-Insulated	Non-Insulated
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

TE Connectivity 1544545-3 is the primary substitute for applications utilizing wire gauges within the 17-24 AWG range. This part maintains ROHS3 compliance and is currently in Active product status with documented inventory availability. The tab length and overall length dimensions show minor variation from the original specification but remain within the mechanical envelope of standard quick-connect receptacle designs.

TE Connectivity 42068-1 is suitable for applications constrained to the 18-22 AWG wire gauge range. This part carries RoHS compliance certification and maintains Active product status. The increased overall length (0.635" vs. 0.520") must be evaluated against available mounting space in the target application.

For applications requiring support of 16 AWG wire gauge, neither substitute provides full compatibility with the lower end of the original specification. In such cases, alternative component sourcing or design modification may be necessary.

Frequently Asked Questions (FAQ)

Q: Can TE Connectivity 1544545-3 replace Molex 0940304921 in all applications?

A: TE Connectivity 1544545-3 is compatible with applications using wire gauges 17-24 AWG. If the original design requires 16 AWG support, this substitute does not provide full backward compatibility. Tab width, thickness, and contact specifications are identical, ensuring mechanical and electrical compatibility within the supported wire gauge range.

Q: What is the impact of the longer tab length in the substitute parts?

A: TE Connectivity 1544545-3 has a tab length of 0.264" compared to the original 0.237", and TE Connectivity 42068-1 has 0.250". These variations affect the depth of insertion into the mating connector receptacle. Compatibility depends on the receptacle design specifications. Consult the mating connector documentation to confirm acceptable tab length tolerances.

Q: Are there wire gauge limitations when selecting a substitute?

A: Yes. TE Connectivity 1544545-3 supports 17-24 AWG, excluding 16 AWG from the original range. TE Connectivity 42068-1 supports only 18-22 AWG. Select the substitute based on the actual wire gauge requirements of your application. If 16 AWG is required, neither substitute is suitable.

Q: Do the substitute parts maintain the same RoHS compliance level?

A: TE Connectivity 1544545-3 is ROHS3 Compliant, matching the original part. TE Connectivity 42068-1 is RoHS Compliant. Both meet regulatory requirements for their respective product lines. Verify compliance requirements for your specific application and region.

Q: What packaging format is available for the substitute parts?

A: Both TE Connectivity substitutes are supplied in Cut Tape (CT) packaging, which differs from the original part's packaging specification. Confirm that Cut Tape format is compatible with your assembly and procurement processes.

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