Molex 0395166504 Terminal Block Header – Equivalent & Substitute Parts

Part Overview

The Molex 0395166504 is a 4-position terminal block header with male pins, shrouded design, and 0.150" (3.81mm) pitch configured for 90° right-angle through-hole mounting. This component is part of the Eurostyle ESE 39516 series and is rated for 8A at 300V (UL). The part is active in production with 1020 units currently in stock.

Substitute parts are necessary when the original Molex component is unavailable, when alternative housing materials or contact finishes are required for specific application environments, or when design revisions call for compatible alternatives from established manufacturers.

Substiute Parts

0395166504

MolexIn Stock: 11290395166504 Datasheet

Current PartRFQ

1722176

Phoenix ContactIn Stock: 10541722176 Datasheet

MFR RecommendedRFQ

1817631

Phoenix ContactIn Stock: 8171817631 Datasheet

MFR RecommendedRFQ

1817822

Phoenix ContactIn Stock: 8641817822 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following critical parameters:

• Electrical Compatibility: Current rating (8A minimum), voltage rating (300V minimum per UL standard)
• Mechanical Compatibility: 4-position configuration, 0.150" (3.81mm) pitch, 90° right-angle orientation, through-hole solder termination, shrouded male pin design
• Environmental Compliance: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1 rating
• Physical Interface: Mating flange feature, compatible contact tail length and insulation height within tolerance

The three substitute parts listed (Phoenix Contact 1722176, 1817631, and 1817822) meet these core electrical and mechanical requirements. Variations in housing material (Liquid Crystal Polymer vs. Polybutylene Terephthalate vs. Polyamide), contact finish (Tin vs. Gold), and secondary features (Locking Ramp) do not affect functional substitution when the primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

All three Phoenix Contact alternatives are active production components with ROHS3 compliance and UL94 V-0 flammability certification, meeting the regulatory and environmental requirements of the original Molex part.

Phoenix Contact 1722176 maintains exact pitch (0.150" / 3.81mm) and electrical ratings. The Liquid Crystal Polymer housing provides enhanced thermal stability compared to standard polyamide. Contact finish is tin rather than gold; this is functionally equivalent for solder termination applications.

Phoenix Contact 1817631 operates at the same electrical ratings but uses a 0.138" (4.60mm) pitch. This part is suitable only for applications where the 4.60mm pitch is the design requirement or where mechanical compatibility with existing mating connectors is confirmed. The Polybutylene Terephthalate housing and locking ramp feature provide additional mechanical retention.

Phoenix Contact 1817822 matches the original 0.150" (3.81mm) pitch and electrical specifications. Polybutylene Terephthalate housing and locking ramp features provide enhanced mechanical stability. This part is the closest functional equivalent to the Molex 0395166504 for direct substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1817631 replace the Molex 0395166504 directly?

A: No. The 1817631 operates at a different pitch (0.138" / 4.60mm versus 0.150" / 3.81mm). Direct substitution requires confirmation that the mating connector and PCB layout accommodate the 4.60mm pitch. This part is suitable only when the design specifically calls for 4.60mm pitch spacing.

Q: What is the difference between tin and gold contact finishes?

A: Both finishes are suitable for solder termination. Gold provides superior corrosion resistance in high-humidity or corrosive environments. Tin is standard for general industrial applications. The choice depends on application environment and cost considerations.

Q: Are the Phoenix Contact alternatives compatible with existing Molex mating connectors?

A: Compatibility depends on the specific mating connector model. Parts with matching pitch (0.150" / 3.81mm) and shrouded male pin configuration are mechanically compatible with standard Molex Eurostyle connectors. Verify mating connector specifications before final selection.

Q: What does the locking ramp feature provide?

A: The locking ramp on Phoenix Contact 1817631 and 1817822 provides positive mechanical retention during mating, preventing accidental disconnection. This feature is optional and does not affect electrical performance.

Q: Are all substitute parts available in the same packaging?

A: Yes. All parts listed are supplied in bulk packaging. Current inventory levels are: Molex 0395166504 (1020 pcs), Phoenix Contact 1722176 (1008 pcs), Phoenix Contact 1817631 (736 pcs), and Phoenix Contact 1817822 (844 pcs).