ELFH20250 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The ELFH20250 is a 20-position terminal block header manufactured by Amphenol PCD, designed for vertical through-hole mounting with 5.08mm pitch spacing. This shrouded (4-side) male pin header operates at 300V UL and 15A UL current rating, suitable for industrial control and power distribution applications. The part is active in production and RoHS compliant, making it a standard component for PCB-to-wire interconnection in control systems.

Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and mounting characteristics. Substitutes must maintain compatibility with the 20-position, 5.08mm pitch vertical through-hole configuration while meeting or exceeding the voltage and current ratings of the original design.

Substiute Parts

ELFH20250

Amphenol PCDIn Stock: 840ELFH20250 Datasheet

Current PartRFQ

1755684

Phoenix ContactIn Stock: 7161755684 Datasheet

SimilarRFQ

1755914

Phoenix ContactIn Stock: 11811755914 Datasheet

SimilarRFQ

1758199

Phoenix ContactIn Stock: 10191758199 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Position Count & Pitch: All substitutes maintain 20 positions with either 5.00mm (0.197") or 5.08mm (0.200") pitch. The 5.00mm pitch variant (1755684) represents a near-equivalent alternative with minimal dimensional deviation.
• Mounting Configuration: All substitutes are vertical through-hole solder-terminated headers, maintaining PCB compatibility.
• Electrical Ratings: Substitutes must support minimum 300V and 12A (UL) ratings. The ELFH20250 operates at 15A UL; substitutes rated at 12A UL represent functional equivalents for applications within the 12A operating envelope.
• Shrouding Type: Two substitutes (1755914, 1758199) maintain 4-side shrouding; one substitute (1758199) features 2-side shrouding, affecting mechanical fit and EMI shielding characteristics.
• Compliance: All substitutes are RoHS3 compliant and UL94 V-0 rated, meeting industrial safety standards.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred Substitutes):

Part 1755914 (Phoenix Contact COMBICON MSTBVA) is the primary direct equivalent. It matches the ELFH20250 in pitch (5.08mm), shrouding (4-side), and UL voltage rating (300V). The 12A UL current rating is lower than the original 15A specification; this substitute is suitable for applications operating at or below 12A. Both parts maintain UL94 V-0 flammability compliance and tin-plated contacts.

Near-Equivalent with Pitch Variation:

Part 1755684 (Phoenix Contact COMBICON MSTBVA) provides a functional alternative with 5.00mm pitch spacing, representing a 0.08mm deviation from the original 5.08mm specification. This part maintains 4-side shrouding, 300V UL rating, and UL94 V-0 compliance. The pitch variation requires PCB layout verification to confirm mechanical compatibility with existing connector footprints.

Substitute with Reduced Shrouding:

Part 1758199 (Phoenix Contact COMBICON MSTBV) matches the 5.08mm pitch and electrical ratings but features 2-side shrouding instead of 4-side. This configuration reduces EMI shielding effectiveness and mechanical support compared to the original design. This substitute is applicable only when 2-side shrouding meets application requirements.

All Phoenix Contact substitutes are ROHS3 compliant and carry REACH Unaffected status, meeting current regulatory requirements for industrial applications.

Frequently Asked Questions (FAQ)

Q: Can 1755684 (5.00mm pitch) be used as a direct replacement for ELFH20250 (5.08mm pitch)?

A: Part 1755684 is mechanically compatible only if the PCB footprint accommodates the 0.08mm pitch reduction. The connector will physically mate with standard 5.08mm pitch receptacles, but the reduced spacing may affect contact alignment and insertion force. PCB layout verification is required before implementation.

Q: What is the impact of the 12A current rating on Phoenix Contact substitutes compared to the 15A ELFH20250?

A: The ELFH20250 is rated for 15A UL current; Phoenix Contact substitutes are rated for 12A UL. Substitutes are suitable for applications operating at or below 12A. Applications requiring sustained currents above 12A must use the original ELFH20250 or equivalent 15A-rated alternatives.

Q: How does 2-side shrouding (1758199) differ from 4-side shrouding (ELFH20250)?

A: The ELFH20250 features 4-side shrouding, providing full mechanical support and EMI shielding on all sides. Part 1758199 provides 2-side shrouding, reducing mechanical support and EMI shielding effectiveness. The 2-side configuration is suitable only for applications where full shrouding is not required.

Q: Are all substitutes RoHS compliant?

A: Yes. The ELFH20250 is RoHS Compliant; all Phoenix Contact substitutes (1755914, 1755684, 1758199) are ROHS3 Compliant, meeting current RoHS Directive requirements.

Q: What is the housing material difference between ELFH20250 and Phoenix Contact substitutes?

A: The ELFH20250 uses Polybutylene Terephthalate (PBT) housing. Phoenix Contact substitutes use Polyamide (PA) Nylon housing. Both materials are UL94 V-0 rated and suitable for industrial applications; material selection may affect thermal performance and chemical resistance in specific environments.

Q: Can substitutes be used interchangeably in existing designs?

A: Substitutes are interchangeable only when electrical ratings (voltage, current), pitch spacing, and shrouding configuration match application requirements. Verify PCB footprint compatibility, current envelope, and mechanical fit before implementation. The 5.00mm pitch variant (1755684) requires footprint verification.