Phoenix Contact 1705704 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1705704 is a 3-position terminal block header with male pins, shrouded on 4 sides, designed for vertical through-hole mounting with 0.200" (5.08mm) pitch spacing. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system maintenance and new design implementations. The press-fit termination style and 12A IEC current rating make this part suitable for industrial control and power distribution applications requiring reliable electrical connections.

Substiute Parts

1705704

Phoenix ContactIn Stock: 8871705704 Datasheet

Current PartRFQ

1719859

Phoenix ContactIn Stock: 7381719859 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1705704 is determined by strict alignment of the following critical parameters:

• Position Count & Pitch: Both main and substitute parts must maintain 3 positions with 0.200" (5.08mm) pitch to ensure mechanical and electrical compatibility with mating connectors and PCB layouts.
• Connector Type & Shrouding: Header configuration with male pins and 4-side shrouding must be preserved to maintain form factor and safety characteristics.
• Mounting & Orientation: Vertical through-hole mounting is required for direct replacement in existing designs.
• Electrical Ratings: Current and voltage ratings must meet or exceed the original specifications (12A IEC minimum, 200V IEC minimum).
• Contact Geometry: Contact tail length (0.154") and insulation height (0.472") must remain consistent for PCB hole compatibility.

The substitute part 1705704 differs primarily in termination style (solder vs. press-fit) and product status (active vs. obsolete), while maintaining all critical mechanical and electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1719859 serves as a direct functional substitute for the obsolete 1705704 model. Both components share identical mechanical dimensions, position count, pitch spacing, and electrical current ratings. The substitute part offers the following advantages:

• Active Product Status: The 1719859 is currently in active production, ensuring long-term availability and supply chain stability compared to the obsolete 1705704.
• Enhanced Voltage Rating: The substitute provides 250V IEC rating versus 200V IEC on the original, offering improved margin for applications operating near maximum voltage specifications.
• RoHS Compliance: The 1719859 is certified RoHS compliant, meeting environmental and regulatory requirements for modern manufacturing and end-market applications.
• Improved Moisture Handling: MSL rating of 1 (Unlimited) on the substitute indicates superior moisture resistance compared to the original specification.

The primary design consideration is the termination method change from press-fit to solder. This requires PCB assembly process modification but does not affect electrical or mechanical compatibility with mating connectors or system performance.

Frequently Asked Questions (FAQ)

Q: Can the 1719859 be used as a direct replacement for the 1705704 in existing designs?

A: Yes, the 1719859 maintains identical mechanical dimensions, position spacing, and electrical ratings. The primary difference is termination method (solder vs. press-fit), which requires PCB assembly process adjustment but does not affect form factor or connector compatibility.

Q: What is the impact of changing from press-fit to solder termination?

A: Press-fit termination uses mechanical insertion force, while solder termination requires reflow or wave soldering during PCB assembly. Both methods provide equivalent electrical connection reliability. The choice depends on your manufacturing process capabilities and equipment.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts maintain 12A IEC current rating and tin contact mating finish. The 1719859 provides higher voltage margin (250V vs. 200V IEC), which is beneficial for applications operating at elevated voltages.

Q: Does the substitute part meet modern compliance standards?

A: Yes. The 1719859 is RoHS compliant and carries MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards. The original 1705704 does not specify these certifications.

Q: Will the 1719859 work with existing mating connectors designed for the 1705704?

A: Yes. Both parts maintain identical 0.200" (5.08mm) pitch, 3-position configuration, and male pin shrouded header design, ensuring full compatibility with existing mating connectors and receptacles.

Q: What inventory status should I consider when selecting between these parts?

A: The 1705704 is obsolete with 839 pieces in stock. The 1719859 is active production with 635 pieces available. For new designs or long-term production, the 1719859 is the recommended choice due to ongoing availability.