ELFH18280 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The ELFH18280 is an 18-position terminal block header manufactured by Amphenol PCD, designed for vertical through-hole mounting with 5.08mm pitch spacing. This shrouded 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 with 941 units in current inventory. Substitute parts are identified to address supply chain continuity, packaging preferences, or regional availability requirements while maintaining functional compatibility within specified electrical and mechanical tolerances.

Substiute Parts

ELFH18280

Amphenol PCDIn Stock: 1010ELFH18280 Datasheet

Current PartRFQ

1755668

Phoenix ContactIn Stock: 10411755668 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELFH18280 is determined by the following critical parameters:

• Position Count: Must equal 18 positions
• Pitch Tolerance: 0.197" to 0.200" (5.00mm to 5.08mm) — minor pitch variation acceptable within standard PCB layout tolerances
• Orientation: Vertical mounting only
• Connector Type: Male pins with 4-side shrouding required
• Mounting: Through-hole solder termination
• Voltage Rating: Minimum 300V UL
• Current Rating: Minimum 12A (UL or IEC)
• Flammability: UL94 V-0 minimum
• RoHS Compliance: Required

The Phoenix Contact 1755668 meets these criteria with a pitch of 0.197" (5.00mm), which falls within acceptable tolerance for standard 5.08mm pitch applications. Both parts share identical position count, shrouded male pin configuration, vertical orientation, and through-hole solder termination. Voltage and current ratings remain compatible for the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the ELFH18280 and 1755668 are active production parts with full RoHS compliance and UL94 V-0 flammability certification. The ELFH18280 provides 15A UL current capacity, while the 1755668 is rated at 12A UL. Selection between these parts should be based on:

• Current Requirement: If circuit design requires 15A UL rating, the ELFH18280 is the appropriate choice. If 12A UL capacity is sufficient, either part is acceptable.
• Pitch Tolerance: The 0.003" (0.08mm) pitch difference between 5.08mm and 5.00mm is within standard PCB manufacturing tolerances for 0.200" pitch headers. Verify PCB footprint design accommodates both pitch specifications.
• Packaging: ELFH18280 is supplied in trays; 1755668 is supplied in bulk. Procurement and handling procedures may differ accordingly.
• Voltage Margin: Both parts meet 300V UL requirement. The 1755668 additionally meets 400V IEC specification, providing additional voltage margin for IEC-compliant applications.
• Inventory: ELFH18280 has 941 units in stock; 1755668 has 953 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1755668 be used as a direct replacement for the ELFH18280?

A: Yes, within the specified electrical and mechanical parameters. Both parts are 18-position vertical shrouded male pin headers with 5.08mm nominal pitch spacing, solder termination, and UL94 V-0 flammability rating. The 0.003" pitch tolerance difference is acceptable for standard PCB layouts. Verify that your circuit design current requirement does not exceed 12A UL, the rating of the 1755668.

Q: What is the pitch tolerance difference between these parts?

A: The ELFH18280 has a 0.200" (5.08mm) pitch, while the 1755668 has a 0.197" (5.00mm) pitch. This 0.003" difference is within standard manufacturing tolerances for terminal block headers and does not affect PCB footprint compatibility for typical industrial applications.

Q: Are there any compliance or certification differences?

A: Both parts are RoHS compliant and carry UL94 V-0 flammability certification. The 1755668 additionally meets ROHS3 compliance and IEC voltage/current specifications (400V IEC, 12A IEC), while the ELFH18280 is specified to UL standards only (300V UL, 15A UL).

Q: What is the current rating difference, and does it matter?

A: The ELFH18280 is rated at 15A UL; the 1755668 is rated at 12A UL. If your application requires current capacity above 12A, use the ELFH18280. If your design operates at or below 12A, either part is suitable.

Q: Do packaging differences affect part selection?

A: The ELFH18280 is supplied in trays; the 1755668 is supplied in bulk. This affects procurement quantity, storage, and handling procedures but does not impact electrical or mechanical compatibility. Select based on your supply chain and assembly process requirements.

Q: Are the mechanical dimensions compatible?

A: Yes. Contact tail length differs by 0.001" (0.04mm), and insulation height differs by 0.003" (0.07mm). These variations are within standard manufacturing tolerances and do not affect PCB assembly or connector mating.