Phoenix Contact 1859519 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1859519 is a 2-position terminal block header with male pins, shrouded design, and 0.200" (5.08mm) pitch for vertical through-hole mounting. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The part operates at 12A (IEC) / 12A (UL) and 320V (IEC) / 300V (UL), with press-fit termination and polybutylene terephthalate (PBT) housing.

Substiute Parts

1859519

Phoenix ContactIn Stock: 8801859519 Datasheet

Current PartRFQ

1755736

Phoenix ContactIn Stock: 295021755736 Datasheet

SimilarRFQ

1955853

Phoenix ContactIn Stock: 24091955853 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1859519 is determined by the following critical parameters:

• Electrical Compatibility: Current rating (IEC/UL), voltage rating (IEC/UL), and contact mating finish must support the same or higher electrical specifications
• Mechanical Compatibility: Number of positions (2), pitch (0.200"/5.08mm), header orientation (vertical), mounting type (through hole), and insulation height (0.472"/12.00mm) must remain identical
• Termination Compatibility: Termination style may differ (press-fit vs. solder) provided the component maintains the same electrical and mechanical interface
• Housing Material: Material composition and flammability rating (UL94 V-0) must meet or exceed the original specification
• Compliance: RoHS status and regulatory certifications must be current or equivalent

The two substitute parts identified (1755736 and 1955853) maintain core mechanical and electrical compatibility while offering active product status and alternative termination methods.

Parameter Comparison

Engineering Selection Recommendations

Phoenix Contact 1755736 is the primary substitute for the 1859519. This part maintains identical mechanical dimensions (2 positions, 0.200" pitch, vertical orientation, through-hole mounting) and electrical ratings (12A IEC/UL, 300V UL). The 1755736 offers higher IEC voltage rating (630V vs. 320V), providing enhanced margin for voltage-sensitive applications. The transition from press-fit to solder termination requires PCB design modification but is a standard industry practice. The part is active in production with ROHS3 compliance and polyamide housing material. Inventory availability (29,447 pcs) supports production continuity.

Phoenix Contact 1955853 is a secondary substitute suitable for applications where the lower UL current rating (10A vs. 12A) and reduced contact tail length (0.102" vs. 0.154") are acceptable. This part offers the highest IEC voltage rating (400V) and uses liquid crystal polymer housing. The 1955853 is active in production with ROHS3 compliance. The shorter contact tail length may require PCB layout verification to ensure proper solder joint formation and mechanical clearance.

Both substitutes maintain the shrouded 4-side design, tin contact mating finish, UL94 V-0 flammability rating, and MSL 1 moisture sensitivity level of the original part.

Frequently Asked Questions (FAQ)

Q: Can the 1755736 directly replace the 1859519 without PCB modification?

A: No. The 1859519 uses press-fit termination while the 1755736 uses solder termination. PCB design changes are required, including through-hole pad sizing and solder mask adjustments to accommodate solder-based assembly.

Q: What is the voltage difference between the 1859519 and 1755736?

A: The 1859519 is rated at 320V (IEC) and 300V (UL). The 1755736 is rated at 630V (IEC) and 300V (UL). Both meet the 300V UL requirement; the 1755736 provides additional IEC voltage margin.

Q: Why does the 1955853 have a shorter contact tail length?

A: The 1955853 contact tail length is 0.102" (2.60mm) compared to 0.154" (3.90mm) for the 1859519. This difference requires PCB layout verification to ensure adequate solder joint formation and mechanical support.

Q: Are all three parts RoHS compliant?

A: The 1859519 is RoHS Compliant. Both substitutes (1755736 and 1955853) are ROHS3 Compliant, which represents current regulatory compliance.

Q: What is the difference in housing material between the substitutes?

A: The 1755736 uses polyamide (PA) nylon housing. The 1955853 uses liquid crystal polymer (LCP) housing. Both maintain UL94 V-0 flammability rating. Material selection may affect thermal performance and mechanical rigidity in specific applications.

Q: Can the 1955853 be used in applications requiring 12A current?

A: The 1955853 is rated at 12A (IEC) per position but only 10A (UL). Applications requiring 12A UL rating should use the 1755736 instead.

Q: What is the inventory status of these substitute parts?

A: The 1859519 (obsolete) has 831 pcs in stock. The 1755736 (active) has 29,447 pcs available. The 1955853 (active) has 2,368 pcs available.