Amphenol ICC 66429-079 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66429-079 is a through-hole, right-angle rectangular connector header with 34 positions at 2.54mm pitch, designed for board-to-cable/wire applications. The part features shrouded 4-wall construction with latch lock/eject hooks and gold-plated circular contacts on phosphor bronze alloy. Currently listed as obsolete product status, equivalent and substitute parts are necessary to maintain design compatibility and ensure continued component availability for production and repair applications.

Substiute Parts

66429-079

Amphenol ICC (FCI)In Stock: 111366429-079 Datasheet

Current PartRFQ

66429-079LF

Amphenol ICC (FCI)In Stock: 94466429-079LF Datasheet

DirectRFQ

499141-8

TE Connectivity AMP ConnectorsIn Stock: 1013499141-8 Datasheet

MFR RecommendedRFQ

CWN-502-34-0021

CW IndustriesIn Stock: 1175CWN-502-34-0021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Amphenol ICC 66429-079 is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Header with male pins
• Position Count & Arrangement: 34 positions in 2-row configuration
• Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
• Mounting & Orientation: Through-hole, right-angle mounting
• Shrouding & Fastening: 4-wall shrouded construction with latch lock/eject hooks
• Termination Method: Solder termination
• Flammability Compliance: UL94 V-0 rating

Substitute parts must maintain these core electrical and mechanical parameters to ensure direct compatibility with existing PCB layouts and mating connectors. Variations in contact material, contact finish, insulation height, or operating temperature do not preclude substitution when all primary parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

66429-079LF (Amphenol ICC) is the direct equivalent substitute for the obsolete 66429-079. Both parts share identical electrical and mechanical specifications, with the primary distinction being active product status and RoHS compliance of the 66429-079LF variant. This part maintains the same insulation height, contact geometry, and material composition as the original.

499141-8 (TE Connectivity AMP-Latch) provides functional equivalence with notable design variations. The part features increased contact length (0.240" vs. 0.230"), reduced insulation height (0.315" vs. 0.681"), square contact geometry instead of circular, and brass contact material instead of phosphor bronze. Operating temperature range extends to -65°C ~ 105°C with specified current and voltage ratings. RoHS non-compliance status requires evaluation against application requirements.

CWN-502-34-0021 (CW Industries) offers functional equivalence with extended operating temperature range (-55°C ~ 125°C) and ROHS3 compliance. Contact length matches the TE part (0.240"), with intermediate insulation height (0.350"). Phosphor bronze contact material aligns with the original specification. Nickel post finish differs from the original design.

Selection between substitute parts depends on compliance requirements, operating environment specifications, and packaging constraints. All three substitute options maintain the core 34-position, 2.54mm pitch, right-angle header configuration required for PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can 66429-079LF directly replace the obsolete 66429-079?

A: Yes. The 66429-079LF maintains identical electrical and mechanical parameters as the original part. The primary differences are active product status and RoHS compliance certification. No design modifications are required for direct substitution.

Q: What are the key differences between the Amphenol and TE Connectivity options?

A: The TE Connectivity 499141-8 features square contacts versus circular, reduced insulation height (0.315" vs. 0.681"), brass contact material versus phosphor bronze, and extended operating temperature range (-65°C ~ 105°C). These variations do not affect mating compatibility with standard 2.54mm pitch receptacles but may impact mechanical fit in space-constrained applications.

Q: Is the CW Industries CWN-502-34-0021 suitable for high-temperature applications?

A: The CWN-502-34-0021 supports operating temperatures from -55°C to 125°C, providing extended high-temperature capability compared to the original specification. This part is suitable for applications requiring elevated temperature performance.

Q: What packaging options are available for these substitute parts?

A: The 66429-079LF is supplied in Tray packaging. The 499141-8 is supplied in Bulk packaging. The CWN-502-34-0021 packaging specification is not provided in the technical data.

Q: Are all substitute parts RoHS compliant?

A: The 66429-079LF is RoHS Compliant. The CWN-502-34-0021 is ROHS3 Compliant. The 499141-8 is RoHS non-compliant. Application requirements determine which compliance status is necessary.

Q: Do contact geometry differences affect connector mating?

A: Contact geometry variations (circular vs. square) do not affect mating compatibility with standard 2.54mm pitch receptacles. Mating is determined by pitch, position count, and row spacing, which remain constant across all substitute options.

Q: What is the significance of insulation height differences?

A: Insulation height variations affect mechanical clearance in PCB layouts and connector stacking configurations. The original 66429-079 and 66429-079LF feature 0.681" insulation height, while TE and CW Industries parts feature reduced heights (0.315" and 0.350" respectively). PCB design must accommodate the selected part's insulation height to prevent interference with adjacent components.