Phoenix Contact 1963557 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1963557 is a 4-position terminal block header with male pins, featuring a 2.50mm pitch and vertical through-hole mounting. This component is part of the MICRO-COMBICON MCV series and is designed for applications requiring reliable board-to-wire connections with shrouded protection on all four sides. The part maintains Active product status with 932 units in current inventory. Alternative components may be required due to supply constraints, design revisions, or application-specific requirements for different pitch spacing or connector specifications.

Substiute Parts

1963557

Phoenix ContactIn Stock: 9511963557 Datasheet

Current PartRFQ

3-644892-4

TE Connectivity AMP ConnectorsIn Stock: 96763-644892-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 1963557 is evaluated based on the following critical parameters:

Electrical Compatibility:

• Number of positions (4 required)
• Current and voltage ratings (minimum 4A at 125V UL / 160V IEC)
• Contact material and finish (tin-plated for corrosion resistance)

Mechanical Compatibility:

• Pitch spacing (2.50mm primary criterion; 2.54mm represents a minor deviation within tolerance for many applications)
• Vertical through-hole mounting configuration
• Shrouded design (4-wall protection)
• Solder termination method
• Contact tail length and insulation height (within acceptable PCB layout margins)

Regulatory & Environmental:

• UL94 V-0 flammability rating
• RoHS compliance status
• Operating temperature range compatibility

The substitute part TE Connectivity AMP Connectors 3-644892-4 meets the functional requirements with the following consideration: the pitch spacing differs by 0.002" (0.04mm), which represents a minor mechanical deviation. This substitute maintains electrical performance, shrouded protection, through-hole mounting, and equivalent regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Phoenix Contact 1963557): Use the original Phoenix Contact 1963557 when PCB layout is fixed to 2.50mm pitch spacing and ROHS3 compliance is explicitly required. This part is actively manufactured with substantial inventory availability.

Substitute Selection (TE Connectivity 3-644892-4): The TE Connectivity 3-644892-4 serves as a functional equivalent when:

• PCB layout can accommodate 2.54mm pitch spacing (0.002" deviation)
• Higher voltage rating (250VAC) is acceptable for the application
• RoHS compliance (without ROHS3 specification) meets regulatory requirements
• Polyester insulation material is compatible with operating environment

Both parts maintain UL94 V-0 flammability certification, active product status, and equivalent electrical performance at 4A minimum current rating. The TE Connectivity part offers higher voltage headroom and is available in larger inventory quantities (9609 units).

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 3-644892-4 be used as a direct drop-in replacement for the Phoenix Contact 1963557?

A: The TE Connectivity part is functionally equivalent but requires PCB layout verification. The pitch difference of 0.002" (0.04mm) is minor but must be confirmed against your board design. Contact tail length and insulation height differences are negligible for most applications.

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

A: The 2.54mm pitch (0.100") is a standard spacing in many connector families. The 2.50mm pitch (0.098") is slightly tighter. If your PCB footprint is designed for 2.50mm, the 2.54mm substitute will not align properly without layout modification. Verify your PCB design before substitution.

Q: Are there electrical performance differences between these parts?

A: Both parts support 4A current rating and exceed 125V minimum voltage requirements. The TE Connectivity part is rated for 250VAC, providing additional voltage margin. Contact material (tin-plated copper alloy) and electrical performance are equivalent.

Q: Does the insulation material difference affect compatibility?

A: Both materials meet UL94 V-0 flammability requirements. Phoenix Contact uses polyamide (nylon), while TE Connectivity uses polyester. Material selection depends on operating temperature, chemical exposure, and mechanical stress requirements. Both are suitable for general industrial applications.

Q: What is the inventory status for each part?

A: Phoenix Contact 1963557 has 932 units in stock. TE Connectivity 3-644892-4 has 9609 units available. The TE Connectivity part offers significantly higher availability.

Q: Are both parts RoHS compliant?

A: Yes. Phoenix Contact 1963557 is ROHS3 Compliant. TE Connectivity 3-644892-4 is RoHS Compliant. Both meet RoHS requirements; ROHS3 represents a more recent compliance standard revision.

Q: What is the Moisture Sensitivity Level (MSL) difference?

A: Phoenix Contact 1963557 is MSL 3 (168 hours). TE Connectivity 3-644892-4 is MSL 1 (Unlimited). MSL 1 indicates lower moisture sensitivity and more relaxed storage/handling requirements, which is advantageous for supply chain management.