Phoenix Contact 1937295 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1937295 is an 8-position terminal block header with male pins, shrouded on four sides, featuring 0.200" (5.08mm) pitch and 90° right-angle orientation for 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 IEC ratings of 12A current and 400V voltage, with UL ratings of 15A at 300V, and is constructed from polyamide (PA) nylon housing with tin-plated contacts.

Substiute Parts

1937295

Phoenix ContactIn Stock: 10981937295 Datasheet

Current PartRFQ

1955099

Phoenix ContactIn Stock: 8421955099 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1937295 is determined by strict equivalence across the following critical parameters:

• Electrical Compatibility: IEC current rating of 12A minimum, IEC voltage rating of 400V minimum
• Mechanical Compatibility: 8 positions, 0.200" (5.08mm) pitch, 90° right-angle orientation, through-hole solder termination
• Physical Form Factor: Header type with male pins and four-side shrouding
• Regulatory Compliance: RoHS compliance and UL94 V-0 flammability rating

The substitute part Phoenix Contact 1955099 meets all critical substitution criteria. While it belongs to the COMBICON CCA series (versus the original MSTBA series) and uses Liquid Crystal Polymer (LCP) housing instead of polyamide, it maintains electrical equivalence and regulatory compliance. The UL current rating differs (10A versus 15A), but the IEC rating of 12A per position matches the original specification. Physical dimensions show minor variations in contact tail length and insulation height, which do not affect functional compatibility in standard through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1955099 is the primary substitute for the obsolete 1937295. Selection of this substitute is supported by the following engineering factors:

Product Status: The 1955099 maintains active product status, ensuring ongoing availability and manufacturer support, whereas the 1937295 is obsolete.

Electrical Equivalence: Both parts meet IEC electrical specifications at 12A and 400V. The UL current rating difference (10A versus 15A) reflects different certification standards but does not affect IEC-compliant applications.

Regulatory Compliance: Both parts carry RoHS compliance certification and UL94 V-0 flammability rating, meeting standard industrial safety requirements.

Housing Material Difference: The substitute uses Liquid Crystal Polymer (LCP) instead of polyamide nylon. LCP provides superior thermal stability and dimensional consistency, making it suitable for applications requiring enhanced environmental performance.

Physical Compatibility: Minor dimensional variations in contact tail length (0.102" versus 0.114") and insulation height (0.339" versus 0.350") are within acceptable tolerances for standard through-hole PCB applications and do not compromise mechanical fit or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 1955099 be used as a direct replacement for the 1937295 in existing designs?

A: Yes. Both parts share identical electrical ratings (IEC 12A/400V), pitch (5.08mm), orientation (90° right angle), and mounting method (through-hole solder). The housing material change from polyamide to LCP and minor dimensional variations do not affect functional compatibility in standard applications.

Q: What is the significance of the housing material change from polyamide to LCP?

A: Liquid Crystal Polymer offers improved thermal stability, lower moisture absorption, and better dimensional consistency compared to polyamide nylon. This change represents a material upgrade that enhances long-term reliability, particularly in environments with temperature fluctuations or elevated humidity.

Q: Why does the UL current rating differ between the two parts?

A: The UL rating difference (15A versus 10A) reflects different certification test conditions and standards applied by the manufacturer. The IEC rating of 12A per position is equivalent on both parts and is the primary specification for IEC-compliant applications.

Q: Are there packaging differences between these parts?

A: Yes. The 1937295 is supplied in standard packaging, while the 1955099 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and does not affect the component itself.

Q: What are the physical dimension differences, and do they matter?

A: Contact tail length differs by 0.012" (0.30mm) and insulation height by 0.011" (0.28mm). These minor variations are within standard PCB design tolerances and do not affect fit, function, or electrical performance in through-hole applications.

Q: Is the 1955099 RoHS compliant?

A: Yes. Both the original 1937295 and substitute 1955099 are RoHS compliant and carry UL94 V-0 flammability certification.