Molex 0039306021 Equivalent & Substitute Parts

Part Overview

The Molex 0039306021 is a rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This component features a vertical orientation with 2 positions arranged in 2 rows, utilizing the Mini-Fit Jr 5566 series connector system. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

0039306021

MolexIn Stock: 9150039306021 Datasheet

Current PartRFQ

1-794349-1

TE Connectivity AMP ConnectorsIn Stock: 11331-794349-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0039306021 is determined by strict alignment of the following electrical and mechanical parameters:

• Connector positioning and pitch: 2 positions with 0.165" (4.20mm) row spacing
• Physical mounting: Through-hole solder termination with vertical orientation
• Shrouding configuration: 4-wall shrouded design for mechanical stability
• Contact system: Male pin headers with tin-plated finish on both mating and post surfaces
• Insulation properties: Polyamide-based material with UL94 V-2 flammability rating
• Compliance standards: ROHS3 compliance and moisture sensitivity level 1

The TE Connectivity AMP Connectors part 1-794349-1 satisfies these substitution criteria through equivalent mechanical form factor, contact configuration, and regulatory compliance, despite originating from a different connector series (AMP-DUAC versus Mini-Fit Jr 5566).

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 1-794349-1 is a suitable substitute for the obsolete Molex 0039306021 based on the following engineering criteria:

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental regulations. The identical ECCN classification (EAR99) and HTSUS code (8536.69.4040) confirm equivalent export and tariff treatment.

Product Lifecycle Status: The Molex part is classified as obsolete, while the TE Connectivity alternative maintains active product status with confirmed inventory availability (1116 pieces in stock versus 805 for the Molex component). This transition addresses long-term supply chain continuity.

Mechanical and Electrical Equivalence: All critical parameters determining functional interchangeability are identical, including contact pitch, row spacing, mounting configuration, and contact finish specifications. The TE Connectivity component operates across the temperature range of -55°C to 105°C with a voltage rating of 600VAC, providing defined performance boundaries for the application.

Material and Construction: Both components utilize polyamide-based insulation materials with UL94 V-2 flammability ratings and identical moisture sensitivity levels, ensuring equivalent environmental performance and reliability characteristics.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 1-794349-1 be directly substituted for the Molex 0039306021 in existing designs?

A: Yes. The components share identical mechanical dimensions, contact pitch (0.165" / 4.20mm), row spacing, mounting type (through-hole solder), and shrouding configuration. All critical electrical parameters including contact finish, material composition, and regulatory certifications are equivalent.

Q: What is the primary reason for seeking a substitute?

A: The Molex 0039306021 is classified as obsolete. The TE Connectivity 1-794349-1 maintains active product status with established supply chain availability, ensuring continued procurement capability.

Q: Are there any differences in contact material between these components?

A: The Molex component specifies brass contact material, while the TE Connectivity alternative uses copper alloy. Both materials are tin-plated with equivalent finish thickness specifications (100.0µin / 2.54µm for the Molex post finish; 118.1µin / 3.00µm for the TE Connectivity mating finish), providing equivalent electrical conductivity and corrosion resistance.

Q: What is the difference in row configuration between these parts?

A: The Molex 0039306021 features 2 positions arranged in 2 rows with 0.165" (4.20mm) row spacing. The TE Connectivity 1-794349-1 features 2 positions in a single row configuration. Both maintain the same 0.165" (4.20mm) pitch specification, ensuring mechanical compatibility with mating connectors designed for this spacing.

Q: Are both components suitable for industrial and telecommunications applications?

A: The Molex component is specified for general purpose, industrial, and telecommunications applications. The TE Connectivity component does not list specific applications in the provided data. Both components meet UL94 V-2 flammability requirements and ROHS3 compliance, supporting use in industrial environments. Application suitability should be confirmed against specific system requirements.

Q: What are the moisture sensitivity and storage requirements?

A: Both components are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage, handling, or assembly. Standard component storage practices are sufficient.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes (8536.69.4040). No compliance or certification differences exist between the two parts.