Phoenix Contact 1859645 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1859645 is a 15-position terminal block header with male pins, shrouded on four sides, featuring 0.200" (5.08mm) pitch vertical through-hole mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The part operates at 12A current (IEC/UL) and 320V (IEC) / 300V (UL) voltage ratings, with press-fit termination and UL94 V-0 flammability compliance.

Substiute Parts

1859645

Phoenix ContactIn Stock: 7801859645 Datasheet

Current PartRFQ

1755862

Phoenix ContactIn Stock: 8471755862 Datasheet

SimilarRFQ

1827906

Phoenix ContactIn Stock: 10141827906 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1859645 is determined by the following critical parameters:

• Electrical Compatibility: Current rating (12A minimum), voltage rating (320V IEC minimum), and contact mating finish (tin)
• Mechanical Compatibility: 15 positions, 0.200" (5.08mm) pitch, vertical orientation, through-hole mounting, shrouded (4 side) design, and matching insulation height (0.472")
• Regulatory Compliance: UL94 V-0 flammability rating and RoHS compliance status

The two identified substitute parts meet these core substitution criteria with the following considerations:

Phoenix Contact 1755862 maintains identical electrical and mechanical specifications with solder termination (versus press-fit) and higher IEC voltage rating (630V). Housing material differs (Polyamide/Nylon versus PBT).

Phoenix Contact 1827906 maintains identical electrical and mechanical specifications with solder termination and lower IEC voltage rating (250V). Housing material differs (Liquid Crystal Polymer versus PBT), and contact tail length is shorter (0.102" versus 0.154").

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products from Phoenix Contact, providing continuity for applications currently using the obsolete 1859645.

Phoenix Contact 1755862 is suitable for applications where solder termination is acceptable and higher voltage margin (630V IEC) is beneficial. The Polyamide housing material maintains UL94 V-0 compliance and ROHS3 certification. This part is recommended when PCB assembly processes support wave or reflow soldering.

Phoenix Contact 1827906 is suitable for applications where solder termination is acceptable and the lower IEC voltage rating (250V) meets system requirements. The Liquid Crystal Polymer housing provides enhanced thermal and mechanical properties while maintaining UL94 V-0 compliance. The shorter contact tail length (0.102" versus 0.154") requires verification against PCB pad layout and through-hole depth specifications.

Both substitutes maintain the critical 15-position, 5.08mm pitch, vertical shrouded configuration and 12A current rating. The primary design consideration is termination method transition from press-fit to solder, which impacts assembly process and PCB design.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1755862 directly replace 1859645 in existing designs?

A: Electrical and mechanical compatibility is maintained. The primary difference is termination method (solder versus press-fit) and housing material (Polyamide versus PBT). PCB assembly process must support solder termination. The higher IEC voltage rating (630V) provides additional margin.

Q: What is the impact of the shorter contact tail length on Phoenix Contact 1827906?

A: The contact tail length is 0.102" (2.60mm) compared to 0.154" (3.90mm) on the main part. This affects through-hole depth and solder joint formation. PCB design must accommodate the shorter tail length to ensure adequate solder coverage and mechanical support.

Q: Are both substitute parts RoHS compliant?

A: Yes. Phoenix Contact 1755862 carries ROHS3 certification. Phoenix Contact 1827906 carries RoHS compliance. Both meet current regulatory requirements.

Q: What is the difference in housing material between the three parts?

A: The main part (1859645) uses Polybutylene Terephthalate (PBT). Substitute 1755862 uses Polyamide (PA/Nylon). Substitute 1827906 uses Liquid Crystal Polymer (LCP). All three materials maintain UL94 V-0 flammability rating. Material selection affects thermal performance, mechanical rigidity, and chemical resistance.

Q: Can I use Phoenix Contact 1827906 in applications requiring 320V IEC operation?

A: No. Phoenix Contact 1827906 has a maximum IEC voltage rating of 250V, which is below the 320V requirement of the original 1859645. This part is suitable only for applications operating at 250V IEC or below.

Q: What assembly process changes are required when switching from 1859645 to either substitute?

A: The main part uses press-fit termination, while both substitutes use solder termination. This requires transition from press-fit assembly equipment to wave or reflow soldering processes. PCB pad design and through-hole specifications must be updated accordingly.