Molex 0395121518 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Molex 0395121518 is an 18-position terminal block header featuring male pins with 4-side shrouding, designed for 0.150" (3.81mm) pitch right-angle through-hole mounting. This component is part of the Eurostyle ESE 39512 series and is currently in active production status. The part is specified for applications requiring 8A current capacity at 300V UL rating with operating temperatures from -40°C to 105°C. Identifying equivalent substitute parts becomes necessary when managing supply chain continuity, optimizing inventory across multiple suppliers, or addressing component availability constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

0395121518

MolexIn Stock: 6840395121518 Datasheet

Current PartRFQ

1841297

Phoenix ContactIn Stock: 11221841297 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0395121518 is determined by strict equivalence across the following critical parameters:

• Position Count & Pitch: Both main and substitute parts must have 18 positions at 0.150" (3.81mm) pitch to ensure PCB footprint compatibility
• Connector Type & Orientation: Right-angle, male-pin, shrouded (4-side) header configuration is mandatory for mechanical fit and electrical continuity
• Electrical Ratings: Minimum 8A current capacity and 300V voltage rating (UL) are required for circuit protection equivalence
• Termination & Mounting: Solder termination with through-hole mounting ensures assembly process compatibility
• Compliance Standards: ROHS3 compliance and UL94 V-0 flammability rating maintain regulatory and safety requirements

The Phoenix Contact 1841297 meets all substitution criteria across these parameters, establishing it as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0395121518 and Phoenix Contact 1841297 are active production components with full ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on:

Molex 0395121518: Primary choice when gold contact mating finish is specified for enhanced corrosion resistance or when black housing color is required for visual identification in the assembly.

Phoenix Contact 1841297: Suitable alternative when tin contact finish meets application requirements and green housing color is acceptable. This part offers equivalent electrical performance and mechanical compatibility with identical pitch, position count, and current/voltage ratings.

Both parts carry MSL 1 (Unlimited) moisture sensitivity classification, indicating no special storage or handling requirements. The minor dimensional variations in contact tail length (0.138" vs. 0.134") and insulation height (0.270" vs. 0.285") are within acceptable tolerances for through-hole PCB assembly processes and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1841297 be used as a direct replacement for the Molex 0395121518 on existing PCBs?

A: Yes. Both parts share identical pitch (0.150"), position count (18), mounting type (through-hole), and electrical ratings (8A, 300V UL). The minor differences in contact tail length and insulation height do not affect PCB footprint compatibility or assembly feasibility.

Q: What is the significance of the contact mating finish difference (gold vs. tin)?

A: Gold plating provides superior corrosion resistance and is preferred in high-reliability or harsh environment applications. Tin plating is suitable for standard industrial applications with adequate environmental protection. Both finishes meet the electrical requirements of this component category.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, carry UL94 V-0 flammability ratings, and have identical MSL 1 (Unlimited) moisture sensitivity classifications. Both are suitable for equivalent regulatory and safety requirements.

Q: Does the housing material difference (PA66 vs. PBT) affect performance?

A: Both polyamide (PA66) and polybutylene terephthalate (PBT) are engineering thermoplastics with comparable mechanical and thermal properties suitable for this application. The choice between them does not impact electrical performance or operating temperature range (-40°C to 105°C).

Q: What should be considered when switching between these parts in production?

A: Verify that the green housing color of the Phoenix Contact part does not conflict with assembly documentation or visual identification requirements. Confirm that tin contact finish meets your application's environmental and reliability specifications. Both parts use identical solder termination processes and through-hole mounting, requiring no assembly procedure changes.