Phoenix Contact 1724556 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1724556 is a 3-position terminal block header with male pins, shrouded on 4 sides, designed for 0.200" (5.08mm) pitch vertical through-hole mounting. This component operates at 12A IEC current and 200V IEC voltage ratings. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications.

Substiute Parts

1724556

Phoenix ContactIn Stock: 10231724556 Datasheet

Current PartRFQ

1746842

Phoenix ContactIn Stock: 9661746842 Datasheet

SimilarRFQ

1955866

Phoenix ContactIn Stock: 11251955866 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1724556 is determined by the following critical parameters:

• Mechanical Compatibility: 3 positions, 0.200" (5.08mm) pitch, vertical orientation, through-hole mounting, shrouded (4 side) design
• Electrical Performance: 12A current capacity (IEC standard), voltage rating of 200V minimum (IEC standard)
• Physical Dimensions: Contact tail length of 0.154" (3.90mm), insulation height of 0.472" (12.00mm)
• Termination Interface: Male pins with press-fit or solder termination

The identified substitute parts maintain these core mechanical and electrical parameters while offering active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Phoenix Contact 1746842 is suitable for applications where solder termination is acceptable and higher voltage tolerance (400V IEC) is beneficial. This part maintains identical mechanical dimensions and current capacity while offering active product status and ROHS3 compliance.

Phoenix Contact 1955866 provides an alternative with solder termination and equivalent electrical performance (400V IEC, 12A per position). The reduced contact tail length (0.102" versus 0.154") requires verification of PCB hole depth compatibility. This part is active and ROHS3 compliant with LCP housing material.

Both substitute parts exceed the original 200V IEC voltage specification, providing design margin for applications operating at or near the original voltage rating. Selection between 1746842 and 1955866 depends on termination method preference and physical space constraints related to contact tail length.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1746842 or 1955866 directly replace the 1724556 in existing designs?

A: Both parts maintain the critical mechanical parameters (3 positions, 5.08mm pitch, vertical through-hole, shrouded design) and electrical ratings (12A, 200V minimum). The primary difference is termination style: the original uses press-fit, while substitutes use solder. PCB design must accommodate solder termination. For 1955866, verify that the reduced contact tail length (0.102" versus 0.154") is compatible with your PCB hole depth.

Q: What is the significance of the voltage rating increase from 200V to 400V?

A: Both substitute parts are rated for 400V IEC, which exceeds the original 200V IEC specification. This provides additional design margin and allows use in higher-voltage applications without component change. Existing 200V designs remain fully compatible.

Q: Are there compliance differences between the three parts?

A: The original 1724556 is obsolete with no specified RoHS or MSL ratings. Both substitutes (1746842 and 1955866) are active products with ROHS3 compliance and MSL 1 (Unlimited) ratings, indicating improved environmental and regulatory compliance for new designs.

Q: How does the contact tail length difference affect part selection?

A: The 1746842 maintains the original 0.154" (3.90mm) contact tail length. The 1955866 has a shorter 0.102" (2.60mm) tail. This difference affects PCB hole depth requirements and solder joint formation. Verify your PCB design accommodates the selected contact tail length before implementation.

Q: What housing material differences exist between substitutes?

A: The 1746842 uses Polybutylene Terephthalate (PBT) housing. The 1955866 uses Liquid Crystal Polymer (LCP) housing. Both materials are suitable for the specified electrical and thermal environments. Material selection may depend on specific application requirements for chemical resistance or thermal performance.