Phoenix Contact 1963544 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1963544 is a 3-position terminal block header with male pins, shrouded on 4 sides, designed for vertical through-hole mounting with 2.50mm pitch. This component is classified as active product status and is RoHS compliant. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and connector interface specifications align with the original design requirements, enabling direct board-level replacement without circuit redesign.

Substiute Parts

1963544

Phoenix ContactIn Stock: 12141963544 Datasheet

Current PartRFQ

2-644486-3

TE Connectivity AMP ConnectorsIn Stock: 25602-644486-3 Datasheet

SimilarRFQ

2-644861-3

TE Connectivity AMP ConnectorsIn Stock: 386862-644861-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Phoenix Contact 1963544 are qualified based on the following critical parameters:

• Number of Positions: 3 positions (exact match required)
• Pitch Specification: 0.098" (2.50mm) or 0.100" (2.54mm) with mechanical compatibility
• Mounting Configuration: Vertical through-hole solder termination
• Shrouding: 4-wall shrouded design
• Electrical Ratings: Current capacity ≥4A; voltage rating ≥160V (IEC) or ≥125V (UL)
• Contact Type: Male pins
• Compliance: RoHS compliant; UL94 V-0 flammability rating
• Product Status: Active

The identified substitutes are TE Connectivity AMP Connectors part numbers 2-644486-3 and 2-644861-3, both from the MTA-100 series. These parts meet the core functional requirements with pitch tolerance considerations and equivalent electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Both TE Connectivity substitute parts (2-644486-3 and 2-644861-3) maintain active product status and full RoHS compliance with UL94 V-0 flammability certification, matching the Phoenix Contact 1963544 compliance profile. The primary design consideration is pitch tolerance: the Phoenix Contact part specifies 0.098" (2.50mm) pitch, while the TE Connectivity alternatives operate at 0.100" (2.54mm) pitch. This 0.002" (0.04mm) difference is within standard PCB layout tolerances for through-hole applications and does not affect electrical performance or mechanical fit in standard connector receptacles.

Voltage and current ratings of the TE Connectivity parts (250VAC, current varies by wire gauge) exceed the Phoenix Contact specifications (160V IEC, 4A IEC), providing equivalent or superior electrical performance. Mechanical dimensions including insulation height and contact tail length are within 0.012" (0.30mm) of the original part, maintaining compatibility with standard mating connectors and PCB footprints.

Selection between 2-644486-3 and 2-644861-3 is functionally equivalent; both are MTA-100 series headers with identical electrical and mechanical specifications. Inventory availability and procurement lead time are the primary differentiators.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity MTA-100 series parts directly replace the Phoenix Contact 1963544 on existing PCBs?

A: Yes. The pitch difference of 0.002" (2.50mm vs. 2.54mm) is within standard PCB manufacturing tolerances for through-hole applications. Mechanical dimensions are compatible with standard mating connectors. Electrical ratings exceed original specifications.

Q: What is the significance of the pitch difference between 2.50mm and 2.54mm?

A: The 0.04mm difference represents approximately 1.6% tolerance variation. This is standard in connector design and does not affect mechanical fit or electrical performance in typical board-to-cable applications. Both pitches are industry-standard spacing for 3-position headers.

Q: Are the TE Connectivity parts suitable for the same voltage and current applications?

A: Yes. The TE Connectivity parts are rated for 250VAC and current capacity varies by wire gauge, both exceeding the Phoenix Contact 1963544 specifications of 160V (IEC) and 4A (IEC). They are suitable for equivalent or higher-performance applications.

Q: Do the substitute parts maintain the same flammability and RoHS compliance?

A: Yes. Both TE Connectivity parts are UL94 V-0 rated and RoHS compliant, matching the Phoenix Contact 1963544 compliance certifications.

Q: What is the difference between TE Connectivity part numbers 2-644486-3 and 2-644861-3?

A: Both parts are functionally identical MTA-100 series 3-position headers with the same electrical and mechanical specifications. The difference is in base product number designation (644486 vs. 644861) and inventory availability. Selection can be based on procurement lead time and stock levels.

Q: Are there any design considerations for PCB layout when substituting these parts?

A: The 0.002" pitch tolerance and 0.012" variation in contact tail length are within standard PCB design margins. Existing footprints designed for the Phoenix Contact 1963544 will accommodate the TE Connectivity substitutes without modification.