Phoenix Contact 1859535 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1859535 is a 4-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 suitable 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 green polybutylene terephthalate (PBT) housing.

Substiute Parts

1859535

Phoenix ContactIn Stock: 7281859535 Datasheet

Current PartRFQ

1755752

Phoenix ContactIn Stock: 666161755752 Datasheet

SimilarRFQ

1955879

Phoenix ContactIn Stock: 10921955879 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1859535 is determined by the following critical parameters:

• Position Count & Pitch: All substitute parts maintain 4 positions at 0.200" (5.08mm) pitch, ensuring mechanical and electrical compatibility with existing PCB layouts and mating connectors.
• Header Type & Orientation: All substitutes retain the male pin, shrouded (4-side) configuration in vertical orientation, preserving form factor and mounting compatibility.
• Mounting Type: All substitutes use through-hole mounting, maintaining compatibility with standard PCB assembly processes.
• Electrical Ratings: Substitutes meet or exceed the IEC and UL current and voltage specifications of the original part (12A minimum, 300V minimum UL voltage).
• Compliance & Certifications: All substitutes maintain UL94 V-0 flammability rating and ROHS3 compliance, ensuring regulatory equivalence.

The primary differentiators among substitutes are termination style (press-fit vs. solder), housing material composition, contact tail length, and product availability status.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts (1755752 and 1955879) are active products with full regulatory compliance, making them suitable replacements for the obsolete 1859535 in new designs and ongoing production.

Phoenix Contact 1755752 is the primary substitute candidate. It maintains identical mechanical dimensions (contact tail length 0.154", insulation height 0.472"), identical electrical ratings for UL compliance (12A, 300V), and exceeds IEC voltage specification (630V vs. 320V). The transition from press-fit to solder termination requires PCB design modification but is a standard industry practice. Housing material changes from PBT to polyamide (PA/nylon), which maintains UL94 V-0 flammability rating and ROHS3 compliance. Inventory availability is significantly higher (66,606 pcs vs. 655 pcs for the original part).

Phoenix Contact 1955879 is a secondary substitute option. It maintains identical mechanical dimensions and UL voltage compliance (300V) but operates at reduced UL current rating (10A vs. 12A). IEC voltage rating is 400V, exceeding the original 320V specification. Housing material is liquid crystal polymer (LCP), which maintains UL94 V-0 rating and ROHS3 compliance. Contact tail length is shorter (0.102" vs. 0.154"), requiring PCB footprint verification. Color is black rather than green. Inventory availability is lower (1,057 pcs).

Both substitutes maintain identical pitch (5.08mm), position count (4), header type (male pins, shrouded), and orientation (vertical through-hole), ensuring compatibility with existing mating connectors and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 1755752 be used as a direct replacement for the 1859535?

A: The 1755752 is mechanically and electrically compatible with the 1859535 for applications requiring 12A at 300V (UL) or 320V (IEC). The primary design change is termination style: the 1755752 uses solder termination instead of press-fit. PCB footprint and assembly process must be updated accordingly. All other parameters—pitch, position count, shrouded male pin configuration, and vertical orientation—are identical.

Q: What is the difference between press-fit and solder termination?

A: Press-fit termination uses mechanical insertion into plated through-holes without solder. Solder termination requires the component leads to be soldered to PCB pads. The 1755752 requires standard wave or reflow soldering processes, while the original 1859535 required press-fit insertion equipment. Solder termination is more widely supported in standard PCB assembly operations.

Q: Is the 1955879 suitable for applications requiring 12A current?

A: The 1955879 is rated for 10A (UL) and 12A per position (IEC). For applications strictly requiring 12A at UL compliance levels, the 1755752 is the appropriate substitute. The 1955879 is suitable for applications operating at 10A or below under UL standards.

Q: Does the shorter contact tail length of the 1955879 affect compatibility?

A: The 1955879 has a contact tail length of 0.102" (2.60mm) compared to 0.154" (3.90mm) for the original part and 1755752. This difference requires PCB footprint verification and may not be compatible with existing PCB designs. Mechanical compatibility must be confirmed before selection.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 1859535, 1755752, and 1955879 are all ROHS3 compliant with UL94 V-0 flammability rating, MSL 1 (unlimited moisture sensitivity), and REACH unaffected status.

Q: What is the inventory status of each part?

A: The 1859535 (obsolete) has 655 pcs available. The 1755752 (active) has 66,606 pcs available. The 1955879 (active) has 1,057 pcs available. For long-term supply chain planning, the 1755752 offers the highest inventory availability.