Molex 0393550004 Terminal Block Header – Equivalent & Substitute Parts

Part Overview

The Molex 0393550004 is a 4-position terminal block header with male pins, shrouded design, and 4.6mm pitch in a 90° right-angle through-hole configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The part operates at 10A (UL) and 300V, suitable for industrial control and power distribution applications requiring reliable solder termination.

Substiute Parts

0393550004

MolexIn Stock: 10140393550004 Datasheet

Current PartRFQ

284512-4

TE Connectivity AMP ConnectorsIn Stock: 5574284512-4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0393550004 is determined by the following critical parameters:

• Position Count & Pitch: Substitute must have 4 positions at 0.138" (4.60mm) pitch
• Connector Type & Orientation: Must be a header with male pins, shrouded design, and 90° right-angle configuration
• Termination Method: Solder termination required for PCB integration
• Mounting Style: Through-hole mounting mandatory
• Electrical Ratings: Current rating ≥10A (UL) and voltage rating ≥300V (UL)
• Compliance: RoHS3 compliance required

The TE Connectivity AMP Connectors part number 284512-4 meets all substitution criteria. It maintains identical position count, pitch, connector type, orientation, termination method, and mounting style. Electrical ratings (11A UL current, 300V UL voltage) meet or exceed the original specification. Both parts carry RoHS3 compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 284512-4 is a direct functional equivalent to the obsolete Molex 0393550004. Both components maintain identical electrical and mechanical specifications across all critical parameters. The substitute part carries active product status, ensuring long-term availability and supply chain continuity. Both parts are RoHS3 compliant and carry identical export classification (EAR99), supporting regulatory compliance requirements.

The TE Connectivity part demonstrates superior current capacity (11A versus 10A) while maintaining all other specifications, providing additional design margin without requiring circuit modification. Housing material differs (PA66 nylon 6/6 versus PA46 nylon 4/6) and operating temperature range is narrower (−40°C to 110°C versus 140°C maximum), which must be evaluated against specific application requirements. Contact material composition also differs (phosphor bronze versus brass), though both materials are suitable for tin-plated solder termination.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 284512-4 be used as a direct replacement for the Molex 0393550004 in existing designs?

A: Yes. Both components share identical position count, pitch, connector type, orientation, termination method, and mounting style. Electrical ratings are compatible. Physical dimensions show minor variations in contact tail length (0.134" versus 0.136") and insulation height (0.287" versus 0.280"), which fall within typical PCB design tolerances for through-hole terminal blocks.

Q: What are the key differences between these two parts?

A: Primary differences include housing material (PA66 versus PA46), operating temperature range (−40°C to 110°C versus 140°C maximum), contact material (phosphor bronze versus brass), and current rating (11A versus 10A). The substitute part offers higher current capacity and active product status, offsetting the narrower temperature range for most industrial applications.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both parts carry RoHS3 compliance, identical MSL rating (1 – Unlimited), and matching export classification (EAR99). Substitution does not introduce regulatory or compliance barriers.

Q: What should be verified before implementing this substitute in production?

A: Confirm that the operating temperature range of −40°C to 110°C (TE Connectivity part) is acceptable for the application. Verify PCB layout tolerances accommodate minor dimensional variations. Validate solder reflow profiles are compatible with both tin-plated contact finishes.