Phoenix Contact 1915903 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1915903 is a 19-position terminal block header with male pins, shrouded on four sides, designed for 0.200" (5.08mm) pitch vertical through-hole mounting. This component is part of the COMBICON EMSTBVA series and carries an obsolete product status. Due to its obsolescence, identifying equivalent substitute parts from the active product lines is essential for ongoing system maintenance, repairs, and new designs requiring compatible alternatives.

Substiute Parts

1915903

Phoenix ContactIn Stock: 11351915903 Datasheet

Current PartRFQ

1755901

Phoenix ContactIn Stock: 9851755901 Datasheet

SimilarRFQ

1827948

Phoenix ContactIn Stock: 10901827948 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1915903 terminal block header is determined by the following critical parameters:

Core Compatibility Parameters:

• Number of positions: 19
• Pitch: 0.200" (5.08mm)
• Header orientation: Vertical
• Type: Male pins, shrouded (4 side)
• Mounting type: Through hole
• Current rating (IEC): 12A
• Voltage rating (IEC): minimum 320V
• Insulation height: 0.472" (12.00mm)
• Contact tail length: 0.154" (3.90mm)

The substitute parts identified (1755901 and 1827948) maintain the same positional count, pitch, orientation, shrouding configuration, and mounting method. Both substitutes support the required 12A current rating and meet or exceed the voltage specifications. Variations in termination style (solder vs. press-fit), housing material composition, and product status are secondary considerations that do not prevent functional equivalence in applications where the core electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Part 1755901 (COMBICON MSTBVA Series): This substitute is the primary equivalent for the 1915903. It maintains identical positional configuration, pitch, orientation, and mechanical envelope. The IEC voltage rating of 630V exceeds the original 320V specification, providing enhanced margin. The transition from press-fit to solder termination requires PCB design adjustment but does not compromise electrical performance. Active product status and ROHS3 compliance ensure long-term availability and regulatory alignment. Housing material change from PBT to polyamide does not affect functional compatibility within the specified electrical parameters.

Part 1827948 (COMBICON CCVA Series): This substitute maintains core positional and pitch specifications with identical insulation height. The contact tail length is reduced to 0.102" (2.60mm) compared to the original 0.154" (3.90mm), requiring PCB hole depth verification. The IEC voltage rating of 250V is lower than the original 320V specification and should be evaluated against application requirements. Active product status and RoHS compliance support procurement continuity. Housing material composition in liquid crystal polymer provides alternative material properties. This part is suitable for applications where the reduced contact tail length and lower voltage rating are acceptable.

Frequently Asked Questions (FAQ)

Q: Can part 1755901 be used as a direct replacement for 1915903?

A: Part 1755901 is functionally equivalent in terms of position count, pitch, orientation, and electrical current rating. The primary difference is termination style: 1755901 uses solder termination while 1915903 uses press-fit. This requires PCB design modification but does not prevent electrical or mechanical compatibility. The higher voltage rating (630V IEC vs. 320V IEC) provides additional safety margin.

Q: What is the impact of changing from press-fit to solder termination?

A: Press-fit termination (1915903) requires precision-drilled PCB holes and insertion tooling. Solder termination (1755901, 1827948) requires standard through-hole PCB design with solder reflow processing. The change affects manufacturing process but not electrical performance or connector functionality.

Q: Is part 1827948 suitable for all applications requiring 1915903?

A: Part 1827948 maintains positional and pitch compatibility but has a shorter contact tail length (0.102" vs. 0.154"). Applications must accommodate this dimensional change. The IEC voltage rating of 250V is lower than the original 320V and should be evaluated against circuit requirements. If voltage and contact tail length are acceptable, 1827948 provides an active alternative.

Q: What are the compliance differences between the substitutes?

A: Part 1755901 carries ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Part 1827948 carries RoHS compliance with unlimited MSL. The original 1915903 does not specify RoHS status. Both substitutes meet UL94 V-0 flammability requirements matching the original part.

Q: How do housing material differences affect performance?

A: The original 1915903 uses polybutylene terephthalate (PBT). Substitute 1755901 uses polyamide (PA/nylon), and 1827948 uses liquid crystal polymer (LCP). All three materials meet UL94 V-0 flammability ratings. Material selection affects mechanical properties and environmental resistance but does not impact electrical performance within the specified voltage and current parameters.

Q: Are there inventory considerations for these substitutes?

A: Part 1915903 (obsolete) has 1118 pieces in stock. Part 1755901 (active) has 877 pieces available. Part 1827948 (active) has 1046 pieces available. Active product status for both substitutes ensures ongoing procurement capability beyond current inventory levels.