Phoenix Contact 1900028 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1900028 is a 20-position terminal block header with male pins, shrouded design, and 0.197" (5.00mm) pitch in 90° right-angle through-hole configuration. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and new design implementations. The part operates at IEC ratings of 12A/400V and UL ratings of 15A/300V, with press-fit termination and green polybutylene terephthalate (PBT) housing.

Substiute Parts

1900028

Phoenix ContactIn Stock: 8381900028 Datasheet

Current PartRFQ

1757640

Phoenix ContactIn Stock: 7471757640 Datasheet

SimilarRFQ

1836528

Phoenix ContactIn Stock: 9191836528 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1900028 is determined by the following critical parameters:

Core Compatibility Parameters:

• Number of positions: 20
• Pitch: 0.197" (5.00mm)
• Header orientation: 90°, Right Angle
• Mounting type: Through Hole
• Type: Header, Male Pins, Shrouded (4 Side)
• Electrical ratings: Minimum IEC 12A/400V and UL 15A/300V
• Material flammability: UL94 V-0
• RoHS compliance

Allowable Variations:

• Termination style (Press-Fit vs. Solder)
• Housing material (PBT, Polyamide, Liquid Crystal Polymer)
• Contact tail length
• Insulation height (within tolerance)
• Color
• Series designation

The substitute parts 1757640 and 1836528 meet these criteria with documented variations in termination method, housing material, and physical dimensions while maintaining electrical performance and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

1757640 (COMBICON MSTBA Series): This substitute maintains active product status and identical electrical specifications (12A/400V IEC, 15A/300V UL). The primary difference is termination style conversion from press-fit to solder. Housing material changes from PBT to polyamide (PA/Nylon), and contact tail length reduces from 0.165" to 0.138". This part is suitable for applications where solder termination is acceptable and PCB layout accommodates the shorter contact tail. RoHS compliance and UL94 V-0 flammability rating are maintained.

1836528 (COMBICON CCA Series): This substitute offers active product status with enhanced UL current rating (16A vs. 15A) and defined operating temperature range (-40°C to 100°C). IEC voltage rating is 320V (versus 400V on the main part). Termination converts to solder with significantly shorter contact tail (0.079" vs. 0.165"). Housing material is liquid crystal polymer (LCP) with black color. This part is suitable for applications requiring extended temperature operation and where the reduced IEC voltage rating is acceptable. RoHS compliance and UL94 V-0 flammability rating are maintained.

Both substitutes maintain the 20-position, 5.00mm pitch, 90° right-angle through-hole configuration and are manufactured by Phoenix Contact with full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can 1757640 or 1836528 directly replace 1900028 in existing designs?

A: Direct replacement requires PCB layout verification. Both substitutes maintain identical pitch (5.00mm), position count (20), and orientation (90° right-angle). However, contact tail lengths differ: 1757640 has 0.138" tail versus 1900028's 0.165", and 1836528 has 0.079" tail. PCB hole depth and component spacing must accommodate these variations. Termination method changes from press-fit to solder, requiring process adjustment.

Q: What is the difference between press-fit and solder termination?

A: The 1900028 uses press-fit termination, where contacts are mechanically inserted into plated through-holes. Substitutes 1757640 and 1836528 use solder termination, where contacts are soldered to PCB pads. This requires different PCB pad design, hole sizing, and assembly process. Press-fit allows non-destructive rework; solder termination requires desoldering for component removal.

Q: Are the electrical ratings equivalent?

A: Core ratings are equivalent for most applications. IEC ratings: 1900028 and 1757640 both support 12A/400V; 1836528 supports 12A/320V. UL ratings: 1900028 and 1757640 both support 15A/300V; 1836528 supports 16A/300V. Applications operating at IEC 400V or above require 1900028 or 1757640. Applications requiring IEC 320V or below can use any substitute.

Q: What housing material differences exist?

A: 1900028 uses polybutylene terephthalate (PBT); 1757640 uses polyamide (PA/Nylon); 1836528 uses liquid crystal polymer (LCP). All materials meet UL94 V-0 flammability requirements. Material selection affects thermal performance, chemical resistance, and mechanical properties. LCP (1836528) offers superior thermal stability with defined operating range (-40°C to 100°C).

Q: Why is 1900028 obsolete?

A: Product obsolescence indicates Phoenix Contact has discontinued manufacturing. Substitutes 1757640 and 1836528 are active products with ongoing availability. For new designs, active substitutes are recommended. For legacy system maintenance, existing inventory of 1900028 (806 pcs available) or substitute stock (1757640: 720 pcs; 1836528: 900 pcs) should be evaluated based on design requirements.

Q: Are all parts RoHS compliant?

A: Yes. All three parts (1900028, 1757640, 1836528) are RoHS compliant with UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level, meeting regulatory requirements for industrial and commercial applications.