TE Connectivity AMP Connectors 2-175778-3 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 2-175778-3 is a 3-position rectangular connector receptacle housing with 2.00mm pitch, designed for free-hanging in-line mounting applications. This component belongs to the CT series and features crimp-type female socket contacts with polyamide insulation material. The part is RoHS compliant and rated for operating temperatures between -30°C and 105°C. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component selection, inventory management, or design flexibility across compatible connector families.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch	0.079" (2.00mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 2-175778-3 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

Connector type (Receptacle)
Contact type (Female Socket)
Number of positions (3)
Pitch specification (0.079" / 2.00mm)
Number of rows (1)
Mounting type (Free Hanging In-Line)
Contact termination method (Crimp)
RoHS compliance status
Moisture sensitivity level (MSL 1)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in color, insulation material composition, operating temperature ranges, and manufacturer series do not prevent functional substitution when these primary parameters align. The substitute parts listed—440129-3, 6-440129-3, and 69305-003LF—satisfy all mandatory compatibility criteria for direct replacement applications.

Parameter Comparison

Parameter	2-175778-3 (Main)	440129-3	6-440129-3	69305-003LF
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Amphenol ICC (FCI)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	3	3	3	3
Pitch	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	1	1	1	1
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp	Crimp	Crimp
Color	Blue	Natural	Black	Black
Insulation Material	Polyamide (PA66), Nylon 6/6	Thermoplastic	Thermoplastic	Polyamide (PA66), Nylon 6/6, Glass Filled
Operating Temperature Range	-30°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 85°C	-40°C ~ 105°C
Series	CT	High Performance Interconnect (HPI)	High Performance Interconnect (HPI)	Minitek® MezzSelect™, Basics+
Product Status	Active	Active	Active	Active
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

2-175778-3 (TE Connectivity CT Series) Select this part for applications requiring the CT series connector family with blue housing color and polyamide insulation. The part is active and RoHS compliant with an operating temperature range of -30°C to 105°C. This specification provides the widest low-temperature rating among the substitute options.

440129-3 (TE Connectivity HPI Series, Natural) This substitute is suitable for applications compatible with the High Performance Interconnect series. The natural color housing and thermoplastic insulation material provide an alternative to the main part. Operating temperature range is -25°C to 105°C. This part offers the highest inventory availability among TE Connectivity options.

6-440129-3 (TE Connectivity HPI Series, Black) This substitute is applicable for designs requiring black housing color within the HPI series. The thermoplastic insulation and -25°C to 85°C operating temperature range define its operational envelope. This part is suitable for applications not requiring extended low-temperature performance below -25°C or high-temperature operation above 85°C.

69305-003LF (Amphenol ICC Minitek® MezzSelect™ Series) This substitute from an alternative manufacturer provides glass-filled polyamide insulation and the widest operating temperature range (-40°C to 105°C). The part is RoHS compliant and REACH unaffected. Selection of this part introduces a different connector series and manufacturer, requiring verification of mechanical and electrical compatibility with existing mating components.

All substitute parts maintain active product status and full RoHS compliance, ensuring regulatory alignment with current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: What determines whether a rectangular connector housing can substitute for the 2-175778-3?

A: Substitution is determined by matching the following parameters: 3-position receptacle configuration, female socket contact type, 2.00mm pitch spacing, single-row layout, free-hanging in-line mounting, crimp termination method, RoHS compliance, and MSL 1 rating. All listed substitute parts meet these criteria.

Q: Can I use 6-440129-3 in applications requiring operation below -25°C?

A: No. The 6-440129-3 is rated for -25°C to 85°C operating temperature. For applications requiring operation at -30°C, use the 2-175778-3 (-30°C to 105°C) or 69305-003LF (-40°C to 105°C).

Q: Are there differences in mating compatibility between the main part and substitutes?

A: All substitute parts share identical pitch (2.00mm), position count (3), and mounting type (free-hanging in-line). Mating compatibility depends on the connector plug or header design. Verify that mating components are designed for the specific series: CT, HPI, or Minitek® MezzSelect™.

Q: What is the significance of insulation material differences?

A: The main part uses polyamide (PA66) nylon 6/6, while 440129-3 and 6-440129-3 use thermoplastic, and 69305-003LF uses glass-filled polyamide. These materials affect mechanical strength, temperature performance, and chemical resistance. Selection depends on application environmental requirements.

Q: Does color variation affect electrical performance?

A: No. Color (blue, natural, or black) is a visual identifier and does not affect electrical or mechanical function. Color selection is based on application requirements, assembly identification, or design standards.

Q: Why does 69305-003LF have a different HTSUS code than the main part?

A: HTSUS codes are tariff classifications assigned by manufacturers and may differ based on product categorization, even when parts are functionally equivalent. This does not affect technical substitution eligibility.

Q: Can I mix substitute parts from different manufacturers in the same assembly?

A: Yes, provided all parts meet the core substitution criteria and are compatible with the mating connector design. However, verify that the specific connector series (CT, HPI, or Minitek®) is compatible with your mating components.

Q: What does MSL 1 (Unlimited) mean for these parts?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning these parts have unlimited shelf life under normal storage conditions and do not require special moisture-controlled packaging or baking procedures prior to assembly.

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