Phoenix Contact 1940431 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1940431 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) and 400V (IEC), with solder termination and UL94 V-0 flammability rating.

Substiute Parts

1940431

Phoenix ContactIn Stock: 7251940431 Datasheet

Current PartRFQ

1955989

Phoenix ContactIn Stock: 9831955989 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1940431 is determined by the following critical parameters:

• Electrical Compatibility: Current rating (IEC/UL), voltage rating (IEC/UL), and contact configuration must support equivalent or superior performance
• Mechanical Compatibility: Number of positions (4), pitch (0.200"/5.08mm), header orientation (vertical), and mounting type (through hole) must match exactly
• Connector Type: Male pins with shrouded (4-side) design required
• Termination: Solder termination mandatory
• Compliance: RoHS compliance and UL94 V-0 flammability rating required

The Phoenix Contact 1955989 qualifies as a substitute based on matching all critical mechanical and electrical parameters while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1955989 is the qualified substitute for the obsolete 1940431 based on the following engineering criteria:

Electrical Performance: Both parts meet IEC electrical specifications (12A, 400V). The 1955989 specifies 10A under UL standards versus 12A for the 1940431; however, both maintain 300V UL rating. Applications operating within 10A UL limits experience no performance degradation.

Mechanical Compatibility: Identical pitch (5.08mm), position count (4), orientation (vertical), and through-hole mounting ensure direct PCB footprint compatibility without layout modification.

Compliance Status: Both parts carry RoHS compliance and UL94 V-0 flammability certification, meeting regulatory requirements for equivalent applications.

Product Lifecycle: The 1955989 holds active product status with confirmed inventory availability (889 pcs), whereas the 1940431 is obsolete. Transition to the 1955989 ensures long-term supply chain continuity.

Housing Material Difference: The 1955989 uses Liquid Crystal Polymer (LCP) versus Polyamide (PA) in the 1940431. LCP provides superior thermal and chemical resistance, representing a material upgrade.

Frequently Asked Questions (FAQ)

Q: Can the 1955989 replace the 1940431 in existing designs?

A: Yes. Both parts share identical pitch (5.08mm), position configuration (4-position), orientation (vertical), and mounting type (through hole). PCB footprints are compatible without modification. Verify application current requirements do not exceed 10A under UL standards.

Q: What is the primary difference between these parts?

A: The 1955989 is the active successor with improved housing material (LCP), enhanced availability, and Tape & Reel packaging. The 1940431 is obsolete. Electrical and mechanical specifications remain equivalent for standard applications.

Q: Are there packaging considerations for procurement?

A: The 1940431 was supplied in standard packaging; the 1955989 is available in Tape & Reel (TR) format, which is standard for automated assembly processes and improves handling efficiency.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are RoHS compliant and carry UL94 V-0 flammability rating. Moisture sensitivity level is identical (MSL 1 - Unlimited) for both.

Q: What is the contact tail length difference?

A: The 1940431 has a contact tail length of 0.146" (3.70mm), while the 1955989 measures 0.102" (2.60mm). This difference is within standard manufacturing tolerances for through-hole solder termination and does not affect functional compatibility.