Molex 0399390010 Terminal Block Plug Equivalent & Substitute Parts

Part Overview

The Molex 0399390010 is a 29-position terminal block plug featuring a barrier strip configuration with 0.300" (7.62mm) pitch and 90° through-hole mounting. This component is classified as Obsolete by the manufacturer, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. The part employs screw termination with gold-plated beryllium copper contacts housed in polyamide (PA66) material, suitable for industrial control and power distribution applications.

Substiute Parts

0399390010

MolexIn Stock: 8790399390010 Datasheet

Current PartRFQ

0915471

Phoenix ContactIn Stock: 9170915471 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part identified in the manufacturer's documentation is Phoenix Contact 0915471. However, a critical incompatibility exists between the main part and this substitute.

Substitution Logic Assessment:

The Molex 0399390010 is a terminal block plug designed for screw-based wire termination in fixed industrial applications. The Phoenix Contact 0915471 is a circuit breaker with thermal-magnetic protection and lever actuation, representing a fundamentally different product category and functional purpose.

Key Differentiating Parameters:

• Product Category: Terminal Block (Molex) vs. Circuit Breaker (Phoenix Contact)
• Termination Method: Screw termination vs. DIN rail mounting with breaker functionality
• Functional Purpose: Static connection distribution vs. active overcurrent protection
• Mounting Architecture: Through-hole PCB mounting vs. DIN rail mounting
• Position Count: 29-position barrier strip vs. single-pole breaker

Conclusion: The Phoenix Contact 0915471 cannot serve as a functional equivalent for the Molex 0399390010 based on the provided specifications. These components address different circuit requirements and cannot be interchanged.

Parameter Comparison

Engineering Selection Recommendations

For Molex 0399390010 Replacement:

The Phoenix Contact 0915471 listed as a substitute does not meet the functional requirements of the Molex 0399390010. Selection of replacement components for the obsolete Molex terminal block plug must prioritize:

1. Functional Equivalence: Identify 29-position barrier strip terminal blocks with 0.300" (7.62mm) pitch and screw termination from active manufacturers
2. Compliance Alignment: Ensure replacement components maintain ROHS3 compliance and EAR99 ECCN classification
3. Mounting Compatibility: Confirm through-hole mounting capability for PCB integration
4. Contact Specifications: Verify gold-plated beryllium copper contacts or equivalent contact material specifications
5. Mechanical Interface: Validate M3 screw compatibility and mating flange design

Regulatory Status: Both the main part and the listed substitute maintain EAR99 classification and appropriate RoHS compliance levels, indicating no regulatory barriers to component selection within these compliance frameworks.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 0915471 replace the Molex 0399390010 in my application?

A: No. The Phoenix Contact 0915471 is a circuit breaker designed for overcurrent protection on DIN rail systems. The Molex 0399390010 is a terminal block plug for wire distribution. These components serve different functions and cannot be interchanged.

Q: Why is the Molex 0399390010 listed as obsolete?

A: Manufacturer obsolescence indicates the part is no longer in active production. Existing inventory may be available through authorized distributors, but long-term availability cannot be guaranteed. New designs should incorporate active-status alternatives.

Q: What specifications must a substitute terminal block plug match?

A: A functional substitute must provide 29 positions, 0.300" (7.62mm) pitch, screw termination, through-hole mounting, and gold-plated beryllium copper contacts in a polyamide housing. The component must maintain ROHS3 compliance.

Q: Are there compliance concerns with using the obsolete Molex part?

A: The Molex 0399390010 maintains ROHS3 compliance and EAR99 ECCN classification. Compliance status is not a barrier to continued use of existing inventory. However, obsolescence may affect future availability and technical support.

Q: What is the significance of the M3 screw size specification?

A: The M3 screw size defines the mechanical interface for wire termination. Replacement components must use identical or functionally equivalent screw specifications to ensure proper wire clamping force and electrical contact integrity.

Q: Does the 90° wire entry orientation affect substitution?

A: Yes. The 90° through-hole configuration is a critical mechanical parameter. Substitute components must provide identical wire entry orientation to maintain PCB layout compatibility and installation procedures.