Phoenix Contact 1937541 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1937541 is a 7-position terminal block header with male pins, shrouded on 4 sides, featuring 90° right-angle through-hole mounting and 4.6mm pitch. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates at 8A per position (IEC) and 250V (IEC), with UL ratings of 8A at 300V. Substitutes must maintain electrical performance, mechanical compatibility, and mounting characteristics while accommodating modern product availability.

Substiute Parts

1937541

Phoenix ContactIn Stock: 8621937541 Datasheet

Current PartRFQ

1788602

Phoenix ContactIn Stock: 10771788602 Datasheet

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1776134-7

TE Connectivity AMP ConnectorsIn Stock: 9711776134-7 Datasheet

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OQ0712510000G

Amphenol AnytekIn Stock: 813OQ0712510000G Datasheet

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OSTOQ071251

On-Shore TechnologyIn Stock: 737OSTOQ071251 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

• Electrical Compatibility: Current and voltage ratings must meet or exceed the original specification (8A IEC minimum, 250V IEC minimum)
• Mechanical Compatibility: 7 positions, 4.6mm pitch, 90° right-angle orientation, and through-hole mounting are non-negotiable
• Connector Type: Male pins with 4-side shrouding required
• Termination: Solder termination for PCB integration
• Regulatory Compliance: RoHS compliance and UL94 V-0 flammability rating

All four substitute parts meet these core criteria. Variations in housing material, contact tail length, insulation height, and manufacturer-specific features do not affect functional substitutability within the defined electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

1788602 (Phoenix Contact) — Recommended as primary substitute. Active product status ensures long-term availability. Identical electrical ratings (8A IEC, 250V IEC) and mechanical footprint. Housing material differs (Liquid Crystal Polymer vs. Polyamide), but both meet UL94 V-0 requirements. Lower moisture sensitivity (MSL 1 vs. MSL 3) provides improved reliability in humid environments.

1776134-7 (TE Connectivity AMP Connectors) — Acceptable substitute with enhanced current capacity (11A UL). Active product status and established supply chain. Contact tail length and insulation height match original specification. Operating temperature range (-40°C to 110°C) supports broader application scope. Polyamide housing with brass contacts provides robust performance.

OQ0712510000G (Amphenol Anytek) — Viable substitute with 10A UL current rating. Active product status and ROHS3 compliance. Green housing color differs from original black. Extended operating temperature range (-40°C to 115°C). Thermoplastic resin housing with copper alloy contacts. Insulation height variation (0.276" vs. 0.285") is within acceptable tolerance for standard PCB layouts.

OSTOQ071251 (On-Shore Technology) — Acceptable substitute with active product status and ROHS3 compliance. Brass contacts and thermoplastic housing. Operating temperature range (-30°C to 105°C) is narrower than alternatives. Insulation height specification (0.138") differs significantly from original; verify PCB clearance before selection. Current rating not specified; confirm application requirements before use.

Frequently Asked Questions (FAQ)

Q: Can I use these substitutes interchangeably with the original 1937541?

A: Yes, all four substitute parts maintain the same 7-position, 4.6mm pitch, 90° right-angle configuration with solder termination and through-hole mounting. Electrical ratings meet or exceed the original specification. Physical dimensions vary slightly in contact tail length and insulation height; verify PCB layout compatibility before assembly.

Q: What is the difference between the Phoenix Contact 1937541 and 1788602?

A: Both are Phoenix Contact COMBICON MC series with identical electrical performance (8A IEC, 250V IEC). The 1788602 is active production, while 1937541 is obsolete. Housing material differs (LCP vs. Polyamide), and the 1788602 has improved moisture sensitivity (MSL 1). Contact tail length is shorter on the 1788602 (0.102" vs. 0.134"), which may affect PCB hole alignment; verify footprint compatibility.

Q: Are all substitutes RoHS compliant?

A: Yes. The 1937541, 1788602, 1776134-7, and OQ0712510000G are all RoHS compliant. The 1788602, OQ0712510000G, and OSTOQ071251 carry ROHS3 certification, indicating compliance with the latest regulatory requirements.

Q: Which substitute has the highest current rating?

A: The TE Connectivity 1776134-7 offers the highest UL current rating at 11A, compared to 8A for the original and 1788602. The Amphenol Anytek OQ0712510000G provides 10A. This additional capacity provides design margin for applications approaching the original 8A limit.

Q: Does housing material affect electrical performance?

A: No. All housing materials (Polyamide, Liquid Crystal Polymer, Thermoplastic Resin) meet UL94 V-0 flammability requirements and maintain equivalent electrical isolation and voltage withstand characteristics. Material selection impacts mechanical durability, moisture resistance, and temperature stability rather than core electrical function.

Q: What should I verify before switching to a substitute?

A: Confirm PCB footprint compatibility, particularly contact tail length (0.102" to 0.138" range) and insulation height (0.138" to 0.285" range). Verify operating temperature requirements against the substitute's rated range. Confirm current and voltage requirements are met. For OSTOQ071251, verify current rating suitability since it is not specified in available documentation.