Phoenix Contact 1902783 Terminal Block Header – Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1902783 is a 6-position terminal block header with male pins, shrouded on four sides, featuring 0.200" (5.08mm) pitch and 90° right-angle through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations.

Terminal block headers of this configuration are used in industrial control systems, power distribution modules, and signal interconnection applications where reliable solder-terminated connections and mechanical shrouding are required.

Substiute Parts

1902783

Phoenix ContactIn Stock: 7601902783 Datasheet

Current PartRFQ

1954951

Phoenix ContactIn Stock: 10631954951 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for terminal block headers is determined by strict alignment of the following parameters:

• Electrical Compatibility: Voltage and current ratings must meet or exceed the original specification under both IEC and UL standards
• Mechanical Compatibility: Number of positions, pitch spacing, header orientation, and mounting type must be identical
• Termination Method: Solder termination is required; no alternative termination styles are acceptable
• Physical Dimensions: Contact tail length and insulation height must accommodate existing PCB layouts and mating connector geometries
• Regulatory Compliance: RoHS and flammability ratings must satisfy the original design requirements
• Housing Material: Material composition affects thermal performance and chemical resistance in specific environments

The Phoenix Contact 1954951 qualifies as a direct substitute based on matching electrical ratings, mechanical configuration, and regulatory compliance, despite differences in housing material and minor dimensional variations.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1954951 is the designated substitute for the obsolete 1902783 based on the following engineering criteria:

Electrical Equivalence: Both components meet IEC voltage and current specifications at 400 V and 12A. The 1954951 specifies 10A under UL standards compared to the original 15A; applications operating within 10A UL limits are fully compatible. Applications requiring the full 15A UL rating must evaluate alternative sources.

Mechanical Compatibility: Identical pitch (5.08mm), position count (6), orientation (90° right angle), and through-hole mounting ensure direct PCB layout compatibility. Minor dimensional differences in contact tail length (0.114" vs. 0.102") and insulation height (0.350" vs. 0.339") fall within typical connector tolerance ranges and do not affect mating interface performance.

Regulatory Compliance: Both components carry UL94 V-0 flammability certification and meet RoHS requirements. The 1954951 carries ROHS3 compliance, representing current regulatory alignment.

Material Consideration: The 1954951 uses Liquid Crystal Polymer (LCP) housing versus the original polyamide nylon. LCP provides superior thermal stability and chemical resistance in industrial environments, representing a material upgrade.

Availability: The 1954951 is active production status with 1052 units in stock, ensuring supply continuity for the obsolete 1902783.

Frequently Asked Questions (FAQ)

Q: Can the 1954951 directly replace the 1902783 in existing designs?

A: Yes, for applications operating within 10A UL current limits. The mechanical interface, electrical ratings under IEC standards, and regulatory compliance are equivalent. Designs requiring 15A UL performance must evaluate alternative sources.

Q: What is the significance of the housing material change from polyamide to LCP?

A: Liquid Crystal Polymer offers improved thermal performance and chemical resistance compared to polyamide nylon. This represents a material enhancement suitable for demanding industrial environments. No functional incompatibility exists.

Q: Are the dimensional differences in contact tail length and insulation height significant?

A: The differences (0.012" in tail length, 0.011" in insulation height) are within standard connector tolerance ranges. These variations do not affect PCB mounting or mating connector interface performance.

Q: What compliance certifications apply to both components?

A: Both components carry UL94 V-0 flammability certification, indicating suitability for high-reliability applications. The 1954951 carries current ROHS3 compliance, while the 1902783 carries RoHS compliance. Both meet environmental regulatory requirements.

Q: Is the 1954951 suitable for new designs?

A: Yes. The 1954951 is active production status and represents the current Phoenix Contact equivalent in the COMBICON terminal block family. It is appropriate for both replacement and new design applications.