TE Connectivity 2029029-4 Rectangular Connector Housing Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2029029-4 is a 4-position rectangular connector receptacle housing from the VAL-U-LOK series. This component is a black polyamide housing designed for crimp-terminated female socket contacts with a 0.165" (4.20mm) pitch configuration. The part is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent rectangular connector housings share identical electrical and mechanical parameters, including connector type, contact configuration, pitch spacing, mounting method, and operating temperature range. Alternative sources provide equivalent functionality for applications requiring the same interface specifications.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	4
Pitch	0.165" (4.20mm)
Number of Rows	2
Row Spacing	0.165" (4.20mm)
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Latch Lock
Operating Temperature	-40°C ~ 105°C
Insulation Material	Polyamide (PA), Nylon
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for rectangular connector housings is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Connector type (Receptacle)
Contact type (Female Socket)
Number of positions (4)
Pitch spacing (0.165" / 4.20mm)
Row configuration (2 rows at 0.165" spacing)
Mounting method (Free Hanging In-Line)
Contact termination (Crimp)
Fastening mechanism (Latch Lock)
Operating temperature range (-40°C ~ 105°C)

All identified substitute parts match these core electrical and mechanical parameters. Variations in housing color (Black vs. Natural) and insulation material composition (PA vs. PA66, with or without glass fill) do not affect functional interchangeability within the specified parameter set. Series designation differences (VAL-U-LOK vs. Mini-Fit Jr 5557) reflect manufacturer-specific product lines but do not alter the connector interface specifications.

Parameter Comparison

Parameter	2029029-4 (TE)	794954-4 (TE)	0039012040 (Molex)	0039013042 (Molex)	0039013045 (Molex)
Manufacturer	TE Connectivity	TE Connectivity	Molex	Molex	Molex
Series	VAL-U-LOK	VAL-U-LOK	Mini-Fit Jr 5557	Mini-Fit Jr 5557	Mini-Fit Jr 5557
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	4	4	4	4	4
Pitch	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)
Number of Rows	2	2	2	2	2
Row Spacing	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)	0.165" (4.20mm)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp	Crimp	Crimp	Crimp
Fastening Type	Latch Lock	Latch Lock	Latch Lock	Latch Lock	Latch Lock
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	Not Specified
Color	Black	Natural	Natural	Natural	Black
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6, Glass Filled
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Selection (Color Match): The Molex 0039013045 provides direct color equivalence to the TE Connectivity 2029029-4, both featuring black housing. This part maintains full RoHS3 compliance and unlimited moisture sensitivity rating. All electrical and mechanical parameters align with the original specification.

Alternative Selection (TE Connectivity Series): The TE Connectivity 794954-4 remains within the VAL-U-LOK series family and provides complete parametric equivalence. The natural color housing represents the only functional difference. This part carries RoHS compliance certification and identical operating specifications.

Secondary Selections (Molex Series): The Molex 0039012040 and 0039013042 both provide parametric equivalence within the Mini-Fit Jr 5557 series. Both parts feature natural housing color and PA66 insulation material. These components maintain ROHS3 compliance and unlimited moisture sensitivity rating. The 0039013042 represents a lower-inventory alternative to 0039012040 with identical specifications.

Compliance Considerations: All substitute parts maintain Active product status. RoHS compliance is confirmed across all options. Moisture sensitivity level remains constant at MSL 1 (Unlimited) for all parts, eliminating handling and storage restrictions.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0039013045 directly replace the TE Connectivity 2029029-4?

A: Yes. The Molex 0039013045 matches all critical electrical and mechanical parameters: 4-position receptacle, female socket contacts, 0.165" pitch, 2-row configuration, crimp termination, latch lock fastening, and -40°C to 105°C operating range. Both parts feature black housing and unlimited moisture sensitivity rating.

Q: What is the difference between the TE Connectivity 794954-4 and 2029029-4?

A: The parts are parametrically equivalent. The primary difference is housing color: 2029029-4 is black, while 794954-4 is natural. Both belong to the VAL-U-LOK series and share identical electrical specifications, operating temperature range, and compliance certifications.

Q: Why do the Molex parts use PA66 insulation instead of PA?

A: Insulation material composition does not affect functional interchangeability within the specified parameter set. Both PA and PA66 polyamide materials meet the electrical and mechanical requirements for this connector housing application. PA66 is a common alternative formulation in rectangular connector manufacturing.

Q: Are there inventory considerations when selecting a substitute?

A: Inventory levels vary by part number. The Molex 0039012040 maintains the highest inventory (252,982 pcs), while the Molex 0039013042 has lower availability (30,904 pcs). The TE Connectivity 794954-4 provides 2,400 pcs. Selection should account for supply chain requirements and lead time constraints.

Q: Does operating temperature specification affect substitution eligibility?

A: The Molex 0039013045 does not specify an operating temperature range in the provided data. However, all other substitute parts confirm the -40°C to 105°C range matching the original 2029029-4. This parameter alignment ensures thermal performance equivalence for the specified operating environment.

Q: Can these housings be used interchangeably in the same connector assembly?

A: Yes. All substitute parts maintain identical pitch spacing (0.165"), row configuration (2 rows), mounting method (free hanging in-line), and contact termination (crimp). Housing color and insulation material variations do not affect mechanical fit or electrical interface compatibility.

Q: What compliance certifications apply to all substitute parts?

A: All parts maintain RoHS compliance (ROHS3 for most, RoHS for 794954-4). Moisture sensitivity level is MSL 1 (Unlimited) across all options, eliminating special handling requirements. All parts carry Active product status.

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