Molex 0945120101 Quick Connect Female Crimp Connector 0.250" 18-24 AWG

Part Overview

The Molex 0945120101 is a 0.250" (6.35mm) quick connect female crimp connector designed for 18-24 AWG wire gauges. This non-insulated brass terminal with tin finish is classified as obsolete, making equivalent and substitute parts necessary for ongoing procurement and system maintenance. The part operates as a free-hanging in-line connector suitable for applications requiring reliable quick-disconnect functionality in electrical assemblies.

Key Parameters

Parameter	Value
Manufacturer Part Number	0945120101
Manufacturer	Molex
Category	Terminals
Tab Width	0.250" (6.35mm)
Tab Thickness	0.032" (0.81mm)
Wire Gauge	18-24 AWG
Termination Type	Crimp
Gender	Female
Insulation	Non-Insulated
Contact Material	Brass
Contact Finish	Tin
Mounting Type	Free Hanging (In-Line)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0945120101 is determined by the following critical parameters:

Primary Compatibility Criteria:

Tab width: 0.250" (6.35mm) — must match exactly for mechanical fit
Tab thickness: 0.032" (0.81mm) — must match for proper contact engagement
Gender: Female — functional requirement
Termination: Crimp — assembly method compatibility
Contact material: Brass with tin finish — electrical and corrosion performance
Mounting type: Free Hanging (In-Line) — installation configuration
Insulation: Non-Insulated — terminal design class

Wire Gauge Compatibility: The original part accepts 18-24 AWG wire. Substitute parts with wire gauge ranges that encompass or overlap this specification (18-22 AWG, 17-22 AWG, or 12-22 AWG) are functionally compatible for applications using 18-22 AWG wire, which represents the common overlap range.

Dimensional Tolerance: Tab length and overall length variations within typical manufacturing tolerances do not preclude substitution, provided all other parameters align.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and moisture sensitivity equivalence.

Parameter Comparison

Part Number	Manufacturer	Tab Width	Tab Thickness	Wire Gauge	Tab Length	Overall Length	Contact Material	Contact Finish	RoHS Status	Product Status
0945120101	Molex	0.250" (6.35mm)	0.032" (0.81mm)	18-24 AWG	0.303" (7.70mm)	0.839" (21.30mm)	Brass	Tin	ROHS3 Compliant	Obsolete
175020-1	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.307" (7.80mm)	0.835" (21.20mm)	Brass	Tin	ROHS3 Compliant	Active
2238173-3	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	12-22 AWG	0.305" (7.75mm)	0.839" (21.30mm)	Brass	Tin	ROHS3 Compliant	Active
280095-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.303" (7.70mm)	0.748" (19.00mm)	Brass	Tin	ROHS3 Compliant	Active
41772	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.300" (7.62mm)	0.790" (20.06mm)	Brass	Tin	ROHS3 Compliant	Active
41772-1	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.300" (7.62mm)	0.750" (19.05mm)	Brass	Tin	ROHS3 Compliant	Active
42743-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.305" (7.75mm)	0.755" (19.18mm)	Brass	Tin	RoHS Compliant	Active
444334-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.303" (7.70mm)	0.673" (17.10mm)	Brass	Tin	ROHS3 Compliant	Active
60878-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.300" (7.62mm)	0.790" (20.07mm)	Brass	Tin	Not applicable	Active
63609-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	18-22 AWG	0.305" (7.75mm)	Not specified	Brass	Tin	RoHS Compliant	Active
735212-2	TE Connectivity AMP	0.250" (6.35mm)	0.032" (0.81mm)	17-22 AWG	0.303" (7.70mm)	0.669" (16.99mm)	Brass	Tin	ROHS3 Compliant	Active

Engineering Selection Recommendations

All listed substitute parts are manufactured by TE Connectivity AMP Connectors and maintain active product status, ensuring ongoing availability and supply chain stability. The following selection criteria apply:

Primary Substitutes (Highest Compatibility): TE Connectivity 175020-1, 280095-2, 41772, 41772-1, 42743-2, 444334-2, and 63609-2 are direct functional equivalents. These parts share identical tab width, thickness, and contact specifications with wire gauge ranges of 18-22 AWG, which encompasses the primary operating range of the original Molex part.

Extended Range Substitutes: TE Connectivity 2238173-3 accepts 12-22 AWG wire, providing broader gauge compatibility while maintaining all critical mechanical and electrical parameters. This part is suitable for applications requiring flexibility in wire gauge selection.

TE Connectivity 735212-2 operates across 17-22 AWG, offering compatibility with the original specification while supporting slightly finer wire gauges.

Compliance Considerations: All substitute parts maintain ROHS3 compliance or equivalent RoHS certification, ensuring regulatory alignment. MSL 1 rating is consistent across all active substitutes, indicating unlimited moisture sensitivity protection.

Packaging Availability: Substitute parts are available in Cut Tape (CT) packaging for standard procurement, with TE Connectivity 60878-2 available in Bulk packaging for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can TE Connectivity 175020-1 directly replace the Molex 0945120101? A: Yes. The 175020-1 matches all critical parameters: 0.250" tab width, 0.032" thickness, brass with tin finish, and 18-22 AWG wire gauge compatibility. The 0.002" difference in tab length (0.307" vs. 0.303") and 0.004" difference in overall length (0.835" vs. 0.839") are within acceptable manufacturing tolerances and do not affect functional performance.

Q: What is the difference between the various TE Connectivity Faston series substitutes? A: The Faston series substitutes (41772, 41772-1, 42743-2, 444334-2, 60878-2, 63609-2) share identical electrical and mechanical specifications but differ in overall length. These variations accommodate different connector housing depths and assembly configurations. Selection depends on the specific connector cavity or housing design in your application.

Q: Is TE Connectivity 2238173-3 suitable for applications using 18-24 AWG wire? A: The 2238173-3 supports 12-22 AWG wire, which covers the 18-22 AWG overlap with the original part. Applications requiring 23-24 AWG wire should use substitutes with explicit 18-24 AWG or 18-22 AWG ratings to ensure proper crimp contact engagement.

Q: Does the Fastin-Faston series (280095-2, 735212-2) differ functionally from the Faston series? A: Both series maintain identical tab width, thickness, and contact materials. The Fastin-Faston designation indicates a hybrid design combining features of both connector families. Functional compatibility is equivalent for the specified wire gauge ranges.

Q: What packaging options are available for high-volume procurement? A: Most substitutes are supplied in Cut Tape (CT) packaging. TE Connectivity 60878-2 is available in Bulk packaging for applications requiring large quantities without individual tape packaging.

Q: Are there compliance differences between substitute parts? A: All substitute parts maintain ROHS3 compliance or equivalent RoHS certification. TE Connectivity 60878-2 lists RoHS status as "Not applicable," which may indicate a legacy or special-order configuration. For new designs, ROHS3-compliant substitutes (175020-1, 2238173-3, 280095-2, 41772, 41772-1, 444334-2, 735212-2) are recommended.

Q: Can I use TE Connectivity 735212-2 if my application specifies 18-24 AWG? A: The 735212-2 supports 17-22 AWG wire. Applications using 23-24 AWG wire should select substitutes with explicit 18-24 AWG or 18-22 AWG ratings to maintain proper contact pressure and electrical performance.

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