Molex 0438603003 Modular Connector Jack – Equivalent & Substitute Parts

Part Overview

The Molex 0438603003 is a modular jack connector designed for 6-position 4-conductor (6p4c) applications, commonly used in RJ11 and RJ14 configurations. This connector features a 90° right-angle orientation with through-hole solder termination and board lock functionality. The part is classified as obsolete, making identification of active equivalent components essential for ongoing design support and procurement.

Substiute Parts

0438603003

MolexIn Stock: 10710438603003 Datasheet

Current PartRFQ

0438600003

MolexIn Stock: 403670438600003 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0438600003 qualifies as a direct substitute for the 0438603003 based on the following critical parameters:

Matching Parameters:

• Connector type: Jack
• Contact configuration: 6p4c (RJ11, RJ14)
• Orientation: 90° right-angle
• Mounting: Through hole
• Termination: Solder
• Shielding: Unshielded
• Contact material: Phosphor bronze
• Contact finish: Gold (50.0µin / 1.27µm)
• Housing material: Polyamide (PA), Nylon
• Operating temperature: -40°C ~ 85°C
• RoHS compliance: ROHS3 Compliant

Functional Equivalence: The 0438600003 maintains identical electrical and mechanical specifications to the 0438603003. The primary distinction is product status: the substitute is active and in production, whereas the original part is obsolete. Both parts share the same base product number (043860) and series designation (43860), confirming their functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0438600003 is the recommended substitute for the obsolete 0438603003. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The substitute part is currently in active production with substantial inventory availability (40,344 units), ensuring reliable procurement and supply chain continuity.

Both parts satisfy ROHS3 compliance requirements and operate within the same temperature range (-40°C ~ 85°C). The housing material of the substitute includes glass-filled polyamide, which provides enhanced mechanical durability while maintaining full functional compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Are the 0438603003 and 0438600003 electrically identical? A: Yes. Both connectors use identical contact materials (phosphor bronze), contact finish specifications (gold, 50.0µin / 1.27µm), and support the same 6p4c (RJ11, RJ14) configuration. Electrical performance is equivalent.

Q: What is the difference between these two parts? A: The primary difference is product status. The 0438603003 is obsolete, while the 0438600003 is active and in production. The substitute also features glass-filled polyamide housing, providing improved mechanical properties. All other specifications remain identical.

Q: Can I use the 0438600003 as a direct replacement in existing designs? A: Yes. The 0438600003 is a direct mechanical and electrical substitute. No design modifications are required. Both parts share identical mounting, termination, and connector specifications.

Q: Are both parts RoHS compliant? A: Yes. Both the 0438603003 and 0438600003 are ROHS3 compliant.

Q: What is the operating temperature range for these connectors? A: Both parts operate within the range of -40°C to 85°C.

Q: Does the glass-filled housing of the substitute affect compatibility? A: No. The glass-filled polyamide housing of the 0438600003 provides enhanced mechanical durability while maintaining full compatibility with the original design specifications and mounting requirements.