Amphenol ICC 75915-403 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 75915-403 is a 3-position receptacle connector with 0.100" (2.54mm) pitch, designed for board-to-board applications using through-hole solder termination. This connector features tin-lead contact finish and is part of the Dubox™ series. The part is currently obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations.

Substiute Parts

75915-403

Amphenol ICC (FCI)In Stock: 89875915-403 Datasheet

Current PartRFQ

75915-403LF

Amphenol ICC (FCI)In Stock: 113475915-403LF Datasheet

DirectRFQ

929974-01-03

3MIn Stock: 969929974-01-03 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 75915-403 is determined by strict alignment with the following critical parameters:

• Connector Type & Position Count: Must be receptacle configuration with exactly 3 positions
• Pitch Specification: Mating pitch must be 0.100" (2.54mm) to ensure mechanical compatibility with mating headers
• Mounting & Termination: Through-hole solder termination is required for PCB integration
• Board-to-Board Style: Connector must support board-to-board interconnection
• Fastening Mechanism: Push-pull fastening type must be maintained
• Flammability Compliance: UL94 V-0 rating is mandatory for safety-critical applications

The identified substitutes meet these core requirements while differing in specific attributes such as contact finish composition, insulation material, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

75915-403LF (Direct Amphenol ICC Substitute)

The 75915-403LF is the primary substitute for the obsolete 75915-403. Both connectors are from the same manufacturer (Amphenol ICC) and Dubox™ series, ensuring mechanical and electrical compatibility. The 75915-403LF maintains identical pitch, position count, mounting type, and termination method. The primary difference is the contact finish composition: 75915-403LF uses tin finish instead of tin-lead. The 75915-403LF holds active product status and is RoHS compliant, making it suitable for new designs and legacy system support where lead-free compliance is required.

929974-01-03 (3M Manufacturer-Recommended Alternative)

The 929974-01-03 from 3M is a manufacturer-recommended alternative that meets all core substitution criteria. This connector maintains the same 3-position, 0.100" pitch, through-hole solder termination, and push-pull fastening. The 929974-01-03 is from a different manufacturer and series (929 series), introducing design variations including forked contact type, different insulation material (PCT vs. thermoplastic), and increased contact finish thickness. The 929974-01-03 provides specified electrical ratings (2A current, 1500V voltage) and operating temperature range (-40°C ~ 105°C), which are not documented for the original part. This connector is suitable for applications where cross-manufacturer compatibility and specified electrical performance are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 75915-403LF be used as a direct replacement for the 75915-403?

A: Yes. Both connectors share identical mechanical specifications including 3 positions, 0.100" (2.54mm) pitch, through-hole mounting, and push-pull fastening. The primary difference is contact finish (tin vs. tin-lead). The 75915-403LF is the recommended substitute for new designs and legacy support.

Q: What is the key difference between the 75915-403LF and 929974-01-03?

A: Both are functionally compatible substitutes meeting core pitch, position, and mounting requirements. The 75915-403LF maintains the same Dubox™ series design with phosphor bronze contacts and thermoplastic insulation. The 929974-01-03 uses a different series (929) with forked contacts, PCT insulation material, and specified electrical ratings. Selection depends on design constraints and cross-manufacturer compatibility requirements.

Q: Does the 929974-01-03 have different physical dimensions?

A: Minor dimensional variations exist. The 929974-01-03 has a slightly lower insulation height (0.325" vs. 0.335") and longer contact post length (0.125" vs. 0.114"). These differences may affect PCB layout and mating header compatibility. Verify mechanical fit before implementation.

Q: Is the 75915-403LF RoHS compliant?

A: Yes. The 75915-403LF is RoHS compliant, whereas the original 75915-403 is RoHS non-compliant. This makes the 75915-403LF suitable for applications with RoHS compliance requirements.

Q: What are the electrical specifications for these connectors?

A: The original 75915-403 and 75915-403LF do not have specified current or voltage ratings in the provided documentation. The 929974-01-03 is rated for 2A current and 1500V voltage with an operating temperature range of -40°C ~ 105°C. Verify electrical requirements against application specifications before selection.

Q: Can these connectors be used interchangeably in existing designs?

A: The 75915-403LF is mechanically and electrically interchangeable with the 75915-403 for board-to-board applications. The 929974-01-03 is compatible for the same application class but introduces minor dimensional and material variations. Physical fit verification is recommended for the 929974-01-03 due to contact post length and insulation height differences.