Amphenol ICC 55508-348 48-Position 0.079" Minitek® 2.00mm Rectangular Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-348 is a 48-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board surface mount applications. This connector features a 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility while meeting current compliance requirements.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	48
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Current Rating	2A
Voltage Rating	200V
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: connector type (receptacle), number of positions (48), mating pitch (0.079"/2.00mm), row configuration (2 rows with 0.079" spacing), mounting method (surface mount), fastening mechanism (push-pull), contact finish (gold), operating temperature range (-55°C to 125°C), and flammability rating (UL94 V-0).

The primary substitute is the Amphenol ICC 55508-348LF, which differs only in post contact finish (tin instead of tin-lead) and compliance status (RoHS compliant versus non-compliant). This part maintains full electrical and mechanical compatibility.

Secondary substitutes from Samtec Inc. (CLT series) meet all core electrical and mechanical parameters but introduce design variations in insulation material (liquid crystal polymer versus plastic), insulation height (0.083" versus 0.091"), and contact finish thickness (3.00µin versus 15.0µin). These variations remain within acceptable tolerances for board-to-board interconnection applications. Samtec CLT variants offer higher current ratings (4.1A per contact) and enhanced features such as board guides and pick-and-place compatibility.

Parameter Comparison

Parameter	55508-348	55508-348LF	CLT-124-02-F-D	CLT-124-02-F-D-A	CLT-124-02-F-D-BE	CLT-124-02-F-D-BE-A	CLT-124-02-F-D-BE-A-K	CLT-124-02-F-D-BE-A-K-TR	CLT-124-02-F-D-BE-A-P	CLT-124-02-F-D-BE-A-P-TR	CLT-124-02-F-D-BE-K-TR
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry
Number of Positions	48	48	48	48	48	48	48	48	48	48	48
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	2A	2A	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact	4.1A per Contact
Voltage Rating	200V	200V	—	—	—	—	—	—	—	—	—
Insulation Material	Plastic	Plastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Insulation Height	0.091" (2.30mm)	0.091" (2.30mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)	0.083" (2.10mm)
Contact Finish Thickness - Mating	15.0µin (0.38µm)	15.0µin (0.38µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the obsolete 55508-348, the Amphenol ICC 55508-348LF is the primary choice. This part maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. The only material difference is post contact finish (tin versus tin-lead), which does not affect mating interface performance.

For applications requiring enhanced current capacity or advanced manufacturing features, Samtec CLT-124 series receptacles provide full compatibility across all critical parameters. The CLT series offers higher current ratings (4.1A per contact versus 2A) and is available in multiple configurations: standard (CLT-124-02-F-D), with board guide (CLT-124-02-F-D-A), bottom entry (CLT-124-02-F-D-BE), and with pick-and-place features (CLT-124-02-F-D-BE-A-K, CLT-124-02-F-D-BE-A-P). All CLT variants carry ROHS3 compliance and active product status.

Packaging considerations: Amphenol ICC 55508-348LF is supplied in tube packaging. Samtec CLT variants are available in tube or tape & reel formats. The tape & reel options (CLT-124-02-F-D-BE-A-K-TR, CLT-124-02-F-D-BE-A-P-TR, CLT-124-02-F-D-BE-K-TR) are suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 55508-348LF be used as a direct drop-in replacement for the obsolete 55508-348?

A: Yes. The 55508-348LF maintains identical connector type, position count, pitch, row configuration, mounting method, fastening mechanism, and operating temperature range. The post contact finish difference (tin versus tin-lead) does not affect electrical or mechanical compatibility at the mating interface.

Q: What are the key differences between Amphenol ICC and Samtec CLT series substitutes?

A: Both maintain identical mating pitch (0.079"/2.00mm), position count (48), and push-pull fastening. Samtec CLT series uses liquid crystal polymer insulation versus plastic, resulting in 0.008" lower insulation height (0.083" versus 0.091"). CLT series contacts feature thinner gold plating (3.00µin versus 15.0µin) but deliver higher current capacity (4.1A per contact versus 2A). All CLT variants are active products with ROHS3 compliance.

Q: Are bottom entry CLT variants mechanically compatible with standard top entry designs?

A: Bottom entry variants (CLT-124-02-F-D-BE series) differ in connector orientation but maintain identical mating pitch, position count, and electrical specifications. Mechanical compatibility depends on PCB layout and mating connector orientation. Verify board-level clearances and connector approach direction before selection.

Q: What packaging options are available for high-volume production?

A: Samtec CLT-124-02-F-D-BE-A-K-TR, CLT-124-02-F-D-BE-A-P-TR, and CLT-124-02-F-D-BE-K-TR are supplied in tape & reel format suitable for automated pick-and-place assembly. Amphenol ICC 55508-348LF and non-tape & reel CLT variants are supplied in tube packaging for manual or semi-automated processes.

Q: Do all substitutes meet the same compliance requirements?

A: The 55508-348 is RoHS non-compliant. The 55508-348LF is RoHS compliant. All Samtec CLT variants are ROHS3 compliant. All parts carry UL94 V-0 flammability rating and operate across -55°C to 125°C. Verify specific compliance requirements for your application before final selection.

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