Molex 0349852121 Rectangular Connector Receptacle Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0349852121 is a 16-position rectangular connector receptacle housing from the MX150 34985 series. This component serves as the housing for female socket contacts in free-hanging inline applications requiring sealed connections. The part is Active status and ROHS3 compliant, making it suitable for current production environments. Equivalent and substitute parts are identified based on matching electrical and mechanical parameters within the MX150 34985 series, with variations limited to color and packaging configurations.

Key Parameters

Parameter	Value
Manufacturer	Molex
Series	MX150 34985
Category	Rectangular Connectors
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	16
Number of Rows	2
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Latch Holder
Features	Sealed
Insulation Material	Polyamide (PA), Nylon, Glass Filled; Syndiotatic Polystyrene (SPS)
Operating Temperature Range	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the Molex 0349852121 are identified within the MX150 34985 series based on matching the following critical parameters:

Connector Type: Receptacle
Contact Type: Female Socket
Number of Positions: 16
Number of Rows: 2
Mounting Type: Free Hanging (In-Line)
Contact Termination: Crimp
Fastening Type: Latch Holder
Features: Sealed
Insulation Material: Polyamide (PA), Nylon, Glass Filled; Syndiotatic Polystyrene (SPS)
Operating Temperature Range: -40°C ~ 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Variations among substitute parts are limited to color (Gray, Black, Yellow) and packaging format (Bulk, Tray). These variations do not affect electrical or mechanical compatibility within the same series and connector configuration.

Parameter Comparison

Part Number	Manufacturer	Color	Packaging	Connector Type	Positions	Rows	Mounting Type	Termination	Fastening	Operating Temp	RoHS Status	REACH Status	Inventory (Pcs)
0349852121	Molex	Gray	Bulk	Receptacle	16	2	Free Hanging (In-Line)	Crimp	Latch Holder	-40°C ~ 125°C	ROHS3 Compliant	REACH Unaffected	986
0349851601	Molex	Black	Tray	Receptacle	16	2	Free Hanging (In-Line)	Crimp	Latch Holder	-40°C ~ 125°C	ROHS3 Compliant	REACH Unaffected	1022
0349851605	Molex	Yellow	Bulk	Receptacle	16	2	Free Hanging (In-Line)	Crimp	Latch Holder	-40°C ~ 125°C	ROHS3 Compliant	REACH Unaffected	955
0349851841	Molex	Black	Bulk	Receptacle	16	2	Free Hanging (In-Line)	Crimp	Latch Holder	-40°C ~ 125°C	ROHS3 Compliant	REACH Unaffected	2643
0349852157	Molex	Gray	Bulk	Receptacle	16	2	Free Hanging (In-Line)	Crimp	Latch Holder	-40°C ~ 125°C	ROHS3 Compliant	REACH Affected	1249

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance. Selection among equivalent parts should be based on the following criteria:

Color Selection: The main part 0349852121 is Gray. Substitute parts 0349851605 (Yellow) and 0349851841 (Black) offer alternative colors for applications where color coding is required for circuit identification or assembly traceability. Part 0349851601 (Black, Tray packaging) provides the same color option with different packaging.

Packaging Consideration: The main part 0349852121 is supplied in Bulk packaging. Part 0349851601 is supplied in Tray packaging, which may be preferred for automated assembly processes or when component handling and organization are critical.

REACH Compliance: Part 0349852157 is REACH Affected, while all other parts including the main part 0349852121 are REACH Unaffected. For applications subject to REACH regulations, parts 0349852121, 0349851601, 0349851605, and 0349851841 are preferred.

Inventory Availability: Part 0349851841 (Black, Bulk) has the highest inventory level at 2643 pieces, followed by 0349852157 (Gray, Bulk) at 1249 pieces.

Frequently Asked Questions (FAQ)

Q: Can I substitute 0349851841 for 0349852121 in my assembly?

A: Yes. Both parts are 16-position receptacle housings in the MX150 34985 series with identical electrical and mechanical specifications. The difference is color (Black vs. Gray) and packaging (Bulk for both). Substitution is electrically and mechanically compatible.

Q: What is the difference between Bulk and Tray packaging?

A: Bulk packaging supplies components loose in a container, while Tray packaging organizes components in a structured tray format. Tray packaging is typically preferred for automated pick-and-place assembly systems. Part 0349851601 (Black, Tray) is the only substitute available in Tray format.

Q: Does color affect the electrical performance of the connector housing?

A: No. Color variations (Gray, Black, Yellow) are cosmetic only and do not affect electrical or mechanical performance. Color selection is typically driven by assembly documentation, circuit identification, or customer specifications.

Q: Why is part 0349852157 marked as REACH Affected while others are REACH Unaffected?

A: REACH Affected status indicates the part may contain substances of concern under REACH regulations. For applications in regions with REACH compliance requirements, use parts marked REACH Unaffected: 0349852121, 0349851601, 0349851605, or 0349851841.

Q: Are contacts included with these connector housings?

A: No. All parts in this group are housings only. Female socket contacts must be ordered separately and crimped into the housing.

Q: What is the operating temperature range for these parts?

A: All parts operate from -40°C to 125°C, making them suitable for industrial and automotive applications within this thermal envelope.

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