Molex 0444721052 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0444721052 is a shrouded vertical rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 10-position, 2-row connector with 0.165" (4.20mm) pitch features a locking ramp fastening mechanism and tin-plated copper alloy contacts. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing production and maintenance applications across automotive, industrial, medical, and telecommunications sectors.

Substiute Parts

0444721052

MolexIn Stock: 9520444721052 Datasheet

Current PartRFQ

0444721053

MolexIn Stock: 20010444721053 Datasheet

DirectRFQ

1-1586040-0

TE Connectivity AMP ConnectorsIn Stock: 9521-1586040-0 Datasheet

MFR RecommendedRFQ

1-1586492-0

TE Connectivity AMP ConnectorsIn Stock: 8181-1586492-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0444721052 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Header
• Contact type: Male Pin
• Number of positions: 10
• Number of rows: 2
• Pitch - mating: 0.165" (4.20mm)
• Row spacing - mating: 0.165" (4.20mm)
• Mounting type: Through Hole
• Termination: Solder
• Shrouding: Shrouded - 4 Wall
• Fastening type: Locking Ramp
• Insulation height: 0.504" (12.80mm)
• Contact length - post: 0.138" (4.60mm)
• Style: Board to Cable/Wire

Acceptable Variation Parameters:

• Contact material (Copper Alloy or Brass Alloy)
• Contact finish thickness (within industry tolerance ranges)
• Insulation material (Polyamide variants, Nylon)
• Material flammability rating (UL94 V-0 or V-2)
• Operating temperature range (when specified)
• Current and voltage ratings (when specified)

All identified substitute parts meet these criteria and maintain functional and mechanical compatibility with the original Molex 0444721052 connector header.

Parameter Comparison

Engineering Selection Recommendations

Molex 0444721053 is the direct manufacturer equivalent and primary substitute for the obsolete Molex 0444721052. Both connectors are from the Mini-Fit HCS 44472 series and share identical mechanical and electrical specifications. The 0444721053 is currently in active production status with higher inventory availability (1938 pcs vs. 928 pcs). The primary distinction is the material flammability rating upgrade from UL94 V-2 to UL94 V-0, which provides enhanced flame resistance. This part is recommended as the first-choice replacement for direct substitution in existing designs.

TE Connectivity 1-1586040-0 (VAL-U-LOK series) is an active cross-manufacturer substitute meeting all critical mechanical parameters. This connector features a brass alloy contact material with specified operating temperature range (-40°C ~ 105°C) and current rating (9A). The contact finish thickness is slightly reduced (80.0µin vs. 100.0µin), and the material flammability rating is UL94 V-0. This part is suitable for applications requiring defined thermal and electrical performance specifications.

TE Connectivity 1-1586492-0 (AMP-DUAC series) is an active cross-manufacturer substitute with extended operating temperature range (-55°C ~ 105°C) and gold-plated mating contacts. The gold finish (30.0µin) provides enhanced corrosion resistance compared to tin plating. The material flammability rating is UL94 V-2, matching the original part. This connector is appropriate for applications requiring superior temperature performance or enhanced contact reliability through gold plating.

All three substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0444721053 be used as a direct replacement for the 0444721052?

A: Yes. The 0444721053 is the direct manufacturer equivalent with identical mechanical and electrical specifications. The only difference is the improved material flammability rating (UL94 V-0 vs. V-2). Both connectors are from the same Mini-Fit HCS 44472 series and share the same 10-position, 2-row configuration with 0.165" (4.20mm) pitch.

Q: What are the key differences between the Molex and TE Connectivity substitutes?

A: The Molex 0444721053 is the closest equivalent. The TE Connectivity 1-1586040-0 offers defined operating temperature (-40°C ~ 105°C) and current rating (9A) with brass alloy contacts. The TE Connectivity 1-1586492-0 provides extended temperature range (-55°C ~ 105°C) and gold-plated contacts for enhanced corrosion resistance. All three maintain the same mechanical footprint and mating interface.

Q: Are there packaging differences between these parts?

A: The Molex 0444721052 and 0444721053 are available in tray packaging. The TE Connectivity 1-1586040-0 is supplied in tray packaging. The TE Connectivity 1-1586492-0 packaging is not specified in the available data. Confirm packaging requirements with your supplier before procurement.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. The Molex 0444721053 and TE Connectivity 1-1586040-0 are ROHS3 compliant. The TE Connectivity 1-1586492-0 is RoHS compliant. All parts meet current environmental and regulatory requirements for industrial applications.

Q: Which substitute is recommended for automotive applications?

A: All three substitutes are suitable for automotive applications. The Molex 0444721053 is recommended as the primary choice due to direct manufacturer equivalence and improved flammability rating. The TE Connectivity 1-1586492-0 is an alternative for applications requiring extended temperature performance (-55°C ~ 105°C).

Q: What is the significance of the contact finish differences?

A: The original Molex 0444721052 uses tin plating (100.0µin). The Molex 0444721053 maintains tin plating at the same thickness. The TE Connectivity 1-1586040-0 uses tin plating with slightly reduced thickness (80.0µin). The TE Connectivity 1-1586492-0 uses gold plating (30.0µin) on mating contacts, which provides superior corrosion resistance and is preferred for high-reliability applications.

Q: Are these connectors suitable for medical device applications?

A: Yes. The original Molex 0444721052 lists medical applications in its specification. All three substitute parts maintain compatibility with medical, industrial, and telecommunications applications through equivalent mechanical design and regulatory compliance.