Amphenol ICC 55508-328LF Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-328LF is a 28-position receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount board-to-board applications. This connector features gold-plated mating contacts, push-pull fastening, and operates across -55°C to 125°C. The part is currently active in production with 996 units in stock. Equivalent and substitute parts may be required due to supply chain considerations, design revisions, or specific application requirements that align with alternative connector architectures within the same electrical and mechanical parameter space.

Substiute Parts

55508-328LF

Amphenol ICC (FCI)In Stock: 105255508-328LF Datasheet

Current PartRFQ

CLT-114-02-G-D

Samtec Inc.In Stock: 774CLT-114-02-G-D Datasheet

MFR RecommendedRFQ

CLT-114-02-L-D

Samtec Inc.In Stock: 831CLT-114-02-L-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 55508-328LF is determined by strict alignment with the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Row Configuration: 28 positions arranged in 2 rows
• Pitch Specification: 0.079" (2.00mm) mating pitch with 0.079" row spacing
• Mounting & Termination: Surface mount with solder termination
• Fastening Mechanism: Push-pull fastening type
• Electrical Performance: Minimum 2A current rating and 200V voltage rating
• Environmental Compliance: UL94 V-0 flammability rating, operating range -55°C to 125°C
• Regulatory Status: RoHS compliance and MSL 1 rating

Substitute parts must maintain these core parameters to ensure mechanical and electrical interchangeability. Variations in contact finish thickness, insulation material, or post-contact specifications do not preclude substitution when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

CLT-114-02-G-D (Samtec Inc.): This part matches the 55508-328LF across all critical substitution parameters including 28-position configuration, 0.079" pitch, surface mount solder termination, and push-pull fastening. Both parts maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity. The CLT-114-02-G-D provides higher current capacity (4.1A per contact versus 2A) and uses Liquid Crystal Polymer insulation. However, this part is discontinued at DiGi Electronics, limiting long-term availability for new designs.

CLT-114-02-L-D (Samtec Inc.): This part maintains compatibility across pitch, row configuration, mounting type, termination, and fastening mechanism. It shares identical operating temperature range, flammability rating, and moisture sensitivity classification. The CLT-114-02-L-D differs in position count (48 positions versus 28), making it suitable only for applications where the additional contact positions can be accommodated or left unloaded. This part is currently active in production with 753 units in stock, providing superior long-term supply chain stability compared to the discontinued CLT-114-02-G-D.

Frequently Asked Questions (FAQ)

Q: Can CLT-114-02-G-D directly replace the 55508-328LF in existing designs?

A: Yes, the CLT-114-02-G-D maintains identical position count (28), pitch (0.079"), row configuration (2 rows), mounting type (surface mount), termination (solder), and fastening mechanism (push-pull). All critical mechanical and electrical parameters align. However, verify that the design does not depend on specific insulation material properties, as the CLT-114-02-G-D uses Liquid Crystal Polymer instead of plastic.

Q: Is CLT-114-02-L-D compatible with designs specified for the 55508-328LF?

A: The CLT-114-02-L-D shares all core substitution parameters except position count. It provides 48 positions instead of 28. Compatibility depends on whether the PCB layout and connector housing can accommodate the additional positions. If the design uses only 28 of the 48 available positions, mechanical and electrical compatibility is maintained. Verify footprint dimensions and mating interface specifications before implementation.

Q: What are the key differences in contact finish specifications?

A: The 55508-328LF features 15.0µin (0.38µm) gold plating on mating contacts, while both Samtec alternatives provide 10.0µin (0.25µm). Both specifications meet gold plating requirements for signal integrity and corrosion resistance across the operating temperature range. The thicker plating on the Amphenol part may provide extended contact life in high-cycle mating applications.

Q: Are there compliance or certification differences between these parts?

A: The 55508-328LF is RoHS Compliant, while the Samtec alternatives are ROHS3 Compliant. Both classifications meet current regulatory requirements. All three parts maintain UL94 V-0 flammability rating, MSL 1 moisture sensitivity, and operate across -55°C to 125°C. REACH status is unaffected for all parts.

Q: What is the impact of insulation material differences?

A: The 55508-328LF uses plastic insulation, while CLT-114-02-G-D and CLT-114-02-L-D use Liquid Crystal Polymer (LCP). LCP provides superior dimensional stability, lower moisture absorption, and enhanced mechanical properties at elevated temperatures. Both materials meet UL94 V-0 requirements. Material selection should be verified against specific application environmental conditions and mechanical stress requirements.

Q: How do current ratings affect substitution decisions?

A: The 55508-328LF is rated for 2A, while both Samtec alternatives support 4.1A per contact. For applications operating at or near the 2A specification limit, the higher-rated Samtec parts provide additional design margin. Verify that PCB trace sizing and power distribution design accommodate the selected connector's current rating.