Phoenix Contact 1900031 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1900031 is a 21-position terminal block header with male pins, shrouded on four sides, featuring 0.197" (5.00mm) pitch and 90° right-angle orientation for through-hole mounting. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations.

The primary function of this terminal block header is to provide a standardized connection interface for 21 discrete signal or power lines in industrial control and automation applications. Substitution becomes necessary due to the obsolete product status, requiring engineers to select from active alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

1900031

Phoenix ContactIn Stock: 8951900031 Datasheet

Current PartRFQ

1757653

Phoenix ContactIn Stock: 9251757653 Datasheet

SimilarRFQ

1836531

Phoenix ContactIn Stock: 8991836531 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1900031 is determined by the following critical parameters:

• Position Count: Must be 21 positions
• Pitch Specification: Must be 0.197" (5.00mm)
• Header Orientation: Must be 90°, right-angle configuration
• Connector Type: Must be male pins with four-side shrouding
• Mounting Method: Must be through-hole
• Electrical Ratings: Current and voltage ratings must meet or exceed IEC 12A/400V and UL 15A/300V minimums
• Compliance: Must maintain RoHS compliance and UL94 V-0 flammability rating

The two identified substitute parts (1757653 and 1836531) satisfy these core substitution criteria while differing in secondary characteristics such as termination style, housing material, contact tail length, and color specification.

Parameter Comparison

Engineering Selection Recommendations

Phoenix Contact 1757653 is suitable for applications where the original press-fit termination style can be replaced with solder termination. This substitute maintains identical electrical ratings (IEC 12A/400V, UL 15A/300V), identical pitch and position count, and equivalent insulation height. The housing material change from PBT to polyamide (PA/nylon) and the reduced contact tail length (4.60mm versus 4.19mm) require PCB layout verification to ensure proper solder joint formation and mechanical clearance. Active product status and RoHS compliance make this substitute suitable for new designs and legacy system replacements.

Phoenix Contact 1836531 is suitable for applications where solder termination is required and the reduced contact tail length (2.00mm) is compatible with PCB design constraints. This substitute maintains the 21-position, 5.00mm pitch configuration and equivalent insulation height. The IEC voltage rating is reduced to 320V (from 400V), while UL current rating increases to 16A. The housing material (LCP) and black color differ from the original specification. Operating temperature specification (-40°C to 100°C) is provided for this substitute. Active product status and RoHS compliance support deployment in new designs and system upgrades.

Both substitutes are active products with current manufacturing availability, eliminating supply chain risk associated with the obsolete 1900031 part number.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1757653 be used as a direct replacement for 1900031 in existing PCB designs?

A: Mechanical compatibility requires verification. While both parts share identical pitch (5.00mm), position count (21), and insulation height (0.339"), the contact tail length differs (4.60mm versus 4.19mm). PCB hole depth and solder pad design must accommodate the shorter tail length of part 1757653. Termination style change from press-fit to solder also requires process modification.

Q: What is the primary difference between 1757653 and 1836531?

A: The primary differences are contact tail length (4.60mm versus 2.00mm), housing material (polyamide versus liquid crystal polymer), color (green versus black), and IEC voltage rating (400V versus 320V). Both use solder termination and maintain the core 21-position, 5.00mm pitch configuration. Selection depends on PCB design constraints and voltage requirements.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both Phoenix Contact 1757653 and 1836531 are RoHS compliant and maintain UL94 V-0 flammability rating, matching the compliance profile of the original 1900031 part.

Q: Does the housing material change affect electrical performance?

A: Housing material change does not affect the electrical ratings specified in the IEC and UL standards. Both polyamide (PA/nylon) and liquid crystal polymer (LCP) materials meet the UL94 V-0 flammability requirement. Material selection impacts mechanical durability, temperature stability, and chemical resistance, which are application-dependent considerations.

Q: Which substitute part should be selected for new designs?

A: Selection between 1757653 and 1836531 depends on specific design requirements. For applications requiring maximum IEC voltage rating (400V), select 1757653. For applications with space constraints requiring minimal contact tail length (2.00mm) and operating temperature specification (-40°C to 100°C), select 1836531. Both are active products suitable for new design implementation.