Molex 0399810404 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Molex 0399810404 is a 4-position terminal block header with male pins, partial shroud, and 5.08mm pitch designed for vertical through-hole mounting. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The substitute part 0399800404 provides functional continuity with improved availability from the same manufacturer series.

Substiute Parts

0399810404

MolexIn Stock: 6800399810404 Datasheet

Current PartRFQ

0399800404

MolexIn Stock: 927920399800404 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0399800404 qualifies as a direct substitute for the 0399810404 based on the following matching parameters:

• 4-position configuration with identical pitch spacing (5.08mm)
• Vertical through-hole mounting orientation
• Solder termination style
• Identical electrical ratings: 10 A (UL), 300 V (UL)
• Matching operating temperature range (140°C maximum)
• Identical mechanical configuration: male pins with partial shroud
• Same contact material (brass) and housing material (polyamide/nylon)
• Identical contact tail length (0.150") and insulation height (0.700")

The primary distinction between these parts is the contact mating finish and product status. The substitute part represents the active production equivalent within the Eurostyle terminal block series.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0399800404 is the recommended substitute for the obsolete 0399810404. Both components maintain identical electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications. The substitute part is currently in active production status with significantly higher inventory availability (92,704 units versus 666 units).

The contact mating finish difference (gold versus tin) does not affect electrical performance within the specified operating parameters. Both finishes provide adequate corrosion resistance and conductivity for the 10 A / 300 V application envelope. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the 0399800404 be used as a direct replacement for the 0399810404 in existing designs?

A: Yes. The substitute part maintains identical position count, pitch spacing, mounting orientation, electrical ratings, and mechanical dimensions. No circuit redesign or PCB modification is required.

Q: What is the significance of the contact mating finish difference?

A: The 0399810404 features gold plating while the 0399800404 uses tin plating. Both finishes provide adequate contact resistance and corrosion protection within the specified 10 A / 300 V operating range. The choice between gold and tin does not affect functional compatibility for this application category.

Q: Why is the 0399810404 classified as obsolete?

A: The 0399810404 has been superseded by the 0399800404 within the Molex Eurostyle terminal block series. The substitute part represents the current production equivalent and is recommended for all new designs and ongoing procurement.

Q: Are there any packaging differences between these parts?

A: The 0399810404 is listed with unspecified packaging, while the 0399800404 is supplied in bulk packaging. Both parts are identical in form, fit, and function. Packaging format does not affect component performance or compatibility.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the 0399810404 and 0399800404 are ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory requirements for electronic component manufacturing and distribution.