Phoenix Contact 1937473 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1937473 is a 9-position terminal block header with male pins, shrouded on 4 sides, designed for vertical through-hole mounting with 4.6mm pitch. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates at 8A per position (IEC) and 320V (IEC), providing reliable electrical connectivity in industrial applications.

Substiute Parts

1937473

Phoenix ContactIn Stock: 9601937473 Datasheet

Current PartRFQ

OSTOQ091550

On Shore Technology Inc.In Stock: 1124OSTOQ091550 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1937473 is determined by the following critical parameters:

• Position Count & Pitch: 9 positions at 0.138" (4.60mm) spacing
• Shrouding Configuration: 4-side shrouded design
• Orientation: Vertical mounting
• Electrical Ratings: Minimum 300V UL rating and 8A current capacity per position
• Termination Compatibility: Solder termination capability
• Flammability Compliance: UL94 V-0 material rating
• RoHS Compliance: Compliant status required

The On Shore Technology Inc. OSTOQ091550 qualifies as a functional substitute based on matching position count, pitch, shrouding, orientation, voltage rating, flammability rating, and RoHS compliance. The primary distinction lies in mounting methodology: the original part uses through-hole mounting, while the substitute employs solder mounting, requiring PCB design adaptation.

Parameter Comparison

Engineering Selection Recommendations

The On Shore Technology OSTOQ091550 serves as the primary functional equivalent for the obsolete Phoenix Contact 1937473. Selection between these components should be based on the following engineering criteria:

Phoenix Contact 1937473: Suitable only for legacy system maintenance where through-hole mounting is already established and component inventory exists. Obsolete status limits availability for new procurement.

On Shore Technology OSTOQ091550: Recommended for new designs and ongoing production support. Active product status ensures supply chain continuity. ROHS3 compliance exceeds the original RoHS requirement. The solder mounting methodology requires PCB redesign but provides improved mechanical stability and reduced assembly complexity compared through-hole alternatives. Operating temperature range of -30°C to 105°C accommodates standard industrial applications.

Both components meet the electrical and safety requirements specified for 9-position, 4.6mm pitch terminal block header applications with 300V UL rating and UL94 V-0 flammability compliance.

Frequently Asked Questions (FAQ)

Q: Can the OSTOQ091550 directly replace the Phoenix Contact 1937473 without PCB modification?

A: No. The primary difference is mounting methodology. The original part uses through-hole mounting with solder termination, while the substitute uses direct solder mounting. PCB footprint redesign is required to accommodate the different mounting approach.

Q: Are the electrical ratings equivalent between these components?

A: Yes. Both components meet 300V UL voltage rating and support 8A current capacity per position. The tin contact mating finish and UL94 V-0 flammability rating are identical.

Q: What is the significance of the pitch specification?

A: The 0.138" (4.60mm) pitch determines mechanical and electrical spacing between positions. Both components maintain this specification, ensuring compatibility with mating connectors and wire gauges designed for this pitch standard.

Q: Does the OSTOQ091550 provide better compliance than the original part?

A: Yes. The OSTOQ091550 carries ROHS3 compliance, which supersedes the original RoHS Compliant designation. Both components are RoHS-compliant, but ROHS3 represents current regulatory alignment.

Q: Is the 4-side shrouding configuration maintained in the substitute?

A: Yes. Both components feature 4-side shrouded design, providing equivalent EMI shielding and mechanical protection.

Q: What inventory considerations apply to these components?

A: The Phoenix Contact 1937473 is obsolete with limited remaining stock. The On Shore Technology OSTOQ091550 is active production with established supply chain availability, making it the preferred choice for ongoing system support and new implementations.