Amphenol ICC 55508-148LF Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-148LF is a 48-position rectangular 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 inventory with 751 pieces available.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives with enhanced electrical performance or different contact finish specifications.

Key Parameters

Parameter	Specification
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
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Contact Material	Phosphor Bronze
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Samtec Inc. CLT series connectors serve as direct substitutes for the Amphenol ICC 55508-148LF based on the following critical parameters:

Matching Core Specifications:

48-position receptacle configuration
0.079" (2.00mm) mating pitch
2-row layout with 0.079" (2.00mm) row spacing
Surface mount solder termination
Push-pull fastening mechanism
Gold-plated mating contacts
Operating temperature range -55°C to 125°C
UL94 V-0 flammability rating
Phosphor bronze contact material
MSL 1 (Unlimited) moisture sensitivity

Substitution Variables:

Contact finish thickness (mating and post)
Connector entry style (standard vs. bottom entry)
Insulation material (plastic vs. liquid crystal polymer)
Packaging format (tube vs. tape & reel)
Contact finish post material (tin vs. gold)
Additional features (board guide, pick and place capability)

All CLT series variants maintain electrical and mechanical compatibility with the 55508-148LF within the allowed parameter tolerances for this connector category.

Parameter Comparison

Parameter	55508-148LF (Amphenol ICC)	CLT-124-02-F-D (Samtec)	CLT-124-02-F-D-BE (Samtec)	CLT-124-02-F-D-BE-K-TR (Samtec)	CLT-124-02-G-D (Samtec)	CLT-124-02-G-D-BE (Samtec)	CLT-124-02-L-D (Samtec)	CLT-124-02-L-D-BE (Samtec)	CLT-124-02-L-D-BE-A (Samtec)	CLT-124-02-L-D-BE-A-P (Samtec)
Connector Type	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle, Bottom Entry	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry
Number of Positions	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)
Number of Rows	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	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
Contact Finish Thickness - Mating	30.0µin (0.76µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Insulation Height	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)
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
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
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	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)
Contact Finish - Post	Tin	Tin	Tin	Tin	Gold	Gold	Tin	Tin	Tin	Tin
Current Rating	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
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Tube	Tube	Tube	Tape & Reel (TR)	Not Specified	Tube	Not Specified	Tube	Tube	Tube
Product Status	Active	Active	Active	Active	Discontinued at DiGi Electronics	Active	Discontinued at DiGi Electronics	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status):

CLT-124-02-F-D and CLT-124-02-F-D-BE are the preferred substitutes. Both maintain full electrical and mechanical compatibility with the 55508-148LF. The CLT-124-02-F-D-BE variant includes bottom entry configuration, which accommodates alternative PCB layout requirements. CLT-124-02-F-D-BE-K-TR provides the same electrical specifications in tape & reel packaging for automated assembly processes.

Secondary Substitutes (Active Status):

CLT-124-02-G-D-BE, CLT-124-02-L-D-BE, CLT-124-02-L-D-BE-A, and CLT-124-02-L-D-BE-A-P are active alternatives with bottom entry configuration. These variants differ in contact finish thickness and post material specifications. CLT-124-02-L-D-BE-A includes board guide features, and CLT-124-02-L-D-BE-A-P adds pick and place capability for high-volume manufacturing.

Discontinued Variants:

CLT-124-02-G-D and CLT-124-02-L-D are discontinued at DiGi Electronics and should not be selected for new designs requiring long-term availability.

Compliance Considerations:

All Samtec CLT series substitutes maintain ROHS3 compliance and MSL 1 rating. The 55508-148LF carries RoHS Compliant status. Both compliance frameworks are acceptable for equivalent substitution in industrial and medical applications.

Frequently Asked Questions (FAQ)

Q: Can CLT series connectors directly replace the 55508-148LF in existing designs?

A: Yes, CLT series connectors are direct mechanical and electrical substitutes. The 48-position configuration, 0.079" (2.00mm) pitch, surface mount termination, and push-pull fastening are identical. PCB footprints are compatible for standard and bottom entry variants.

Q: What is the difference between standard and bottom entry CLT connectors?

A: Standard CLT connectors (CLT-124-02-F-D, CLT-124-02-G-D, CLT-124-02-L-D) mount with contacts facing upward. Bottom entry variants (CLT-124-02-F-D-BE, CLT-124-02-G-D-BE, CLT-124-02-L-D-BE) position contacts for entry from the board underside. Bottom entry configuration accommodates different PCB routing and assembly sequences.

Q: How do contact finish specifications affect substitution?

A: The 55508-148LF specifies 30.0µin (0.76µm) gold mating finish with tin post finish. CLT variants offer 3.00µin (0.076µm) or 10.0µin (0.25µm) gold mating finishes with either tin or gold post finishes. All finishes maintain electrical contact integrity and are interchangeable within the allowed parameter range for this connector category.

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

A: CLT-124-02-F-D-BE-K-TR is supplied in tape & reel (TR) format with pick and place capability, suitable for automated assembly. Standard tube packaging is available for CLT-124-02-F-D, CLT-124-02-F-D-BE, CLT-124-02-G-D-BE, CLT-124-02-L-D-BE, CLT-124-02-L-D-BE-A, and CLT-124-02-L-D-BE-A-P variants.

Q: Are there current rating differences between the 55508-148LF and CLT substitutes?

A: The 55508-148LF is rated at 2A total connector current. CLT series connectors are rated at 4.1A per individual contact, providing higher current capacity. This difference does not prevent substitution; CLT variants are suitable for applications requiring the original 2A specification and for designs requiring higher current handling.

Q: Which CLT variant should be selected for new designs?

A: For new designs requiring active product status and standard configuration, CLT-124-02-F-D is recommended. For bottom entry requirements, CLT-124-02-F-D-BE is the primary choice. For automated assembly with tape & reel packaging, CLT-124-02-F-D-BE-K-TR is specified. CLT-124-02-L-D-BE-A-P includes board guide and pick and place features for high-volume manufacturing environments.

Q: What is the insulation material difference between the 55508-148LF and CLT connectors?

A: The 55508-148LF uses plastic insulation material. CLT series connectors use liquid crystal polymer (LCP) insulation, which provides enhanced thermal and chemical resistance. Both materials meet UL94 V-0 flammability requirements and are suitable for industrial and medical applications.

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