Amphenol ICC 55508-146 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-146 is a 46-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board surface mount applications. This connector features 0.079" (2.00mm) pitch, gold-plated mating contacts, and operates across -55°C to 125°C. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts maintain core electrical and mechanical compatibility while offering active product status and improved compliance profiles.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Number of Positions	46
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
Current Rating	2A (main part); 4.1A per contact (substitutes)
Voltage Rating	200V (main part)
Contact Material	Phosphor Bronze
Insulation Material	Plastic (main part); Liquid Crystal Polymer (substitutes)
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of core electrical and mechanical parameters: connector type (receptacle), position count (46), mating pitch (0.079"/2.00mm), row configuration (2 rows at 0.079" spacing), mounting method (surface mount solder), fastening mechanism (push-pull), contact material (phosphor bronze), operating temperature range (-55°C to 125°C), and flammability rating (UL94 V-0).

The Amphenol ICC 55508-146LF serves as a direct manufacturer upgrade within the same product family, differing only in post contact finish (tin versus tin-lead) and RoHS compliance status.

Samtec CLT series connectors (CLT-123-02-F-D and variants) provide cross-manufacturer substitution with identical core mechanical and electrical parameters. These parts maintain the same pitch, position count, row spacing, and operating temperature range. Variations within the CLT series address specific application requirements through connector entry style (standard versus bottom entry), packaging format (tube, tape & reel), and assembly features (board guide, pick and place capability).

Parameter Comparison

Parameter	55508-146	55508-146LF	CLT-123-02-F-D	CLT-123-02-F-D-A	CLT-123-02-F-D-BE	CLT-123-02-F-D-BE-A	CLT-123-02-F-D-BE-A-P	CLT-123-02-F-D-BE-A-P-TR	CLT-123-02-F-D-BE-K-TR	CLT-123-02-F-D-K-TR	CLT-123-02-FM-D
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle
Number of Positions	46	46	46	46	46	46	46	46	46	46	46
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
Termination	Solder	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	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	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)
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
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)
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
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
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)
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

The 55508-146LF represents the primary direct substitute, maintaining Amphenol ICC manufacturing continuity while achieving RoHS compliance. This part is recommended for applications requiring minimal design changes and established supplier relationships.

Samtec CLT-123-02-F-D and CLT-123-02-FM-D provide cross-manufacturer alternatives with active product status and ROHS3 compliance. These connectors deliver higher current capacity (4.1A per contact versus 2A) and employ liquid crystal polymer insulation, offering improved dimensional stability and thermal performance.

For applications requiring bottom entry connector geometry, CLT-123-02-F-D-BE and its variants (CLT-123-02-F-D-BE-A, CLT-123-02-F-D-BE-A-P, CLT-123-02-F-D-BE-A-P-TR, CLT-123-02-F-D-BE-K-TR) provide mechanical alternatives while maintaining electrical compatibility. The board guide feature (indicated by -A suffix) enhances assembly accuracy. Pick and place capability (-P suffix) supports automated manufacturing. Tape & reel packaging (-TR suffix) optimizes high-volume production workflows.

Selection between standard and bottom entry variants depends on PCB layout requirements and connector approach direction. All CLT series substitutes maintain identical electrical performance and operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can CLT-123-02-F-D replace 55508-146 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.079"/2.00mm), position count (46), row configuration (2 rows at 0.079" spacing), operating temperature range (-55°C to 125°C), and push-pull fastening mechanism. The CLT series delivers higher current capacity (4.1A per contact) and improved compliance status. Verify PCB footprint compatibility, as insulation height differs slightly (0.083" versus 0.091").

Q: What is the difference between CLT-123-02-F-D and CLT-123-02-F-D-BE?

A: The -BE designation indicates bottom entry connector geometry, where mating contacts approach from the board bottom rather than the top. Electrical and mechanical specifications remain identical. Selection depends on PCB layout and connector accessibility requirements.

Q: Why do CLT variants include -A, -P, and -TR suffixes?

A: These suffixes denote assembly and packaging options. The -A suffix indicates board guide feature for improved alignment. The -P suffix denotes pick and place capability for automated assembly. The -TR suffix specifies tape & reel packaging format for high-volume production. These features do not affect electrical compatibility.

Q: Is 55508-146LF compatible with 55508-146?

A: Yes. Both are Amphenol ICC Minitek® 2.00mm receptacles with identical core specifications. The primary difference is post contact finish (tin versus tin-lead) and RoHS compliance status. The LF variant is recommended for new designs.

Q: What packaging options are available for CLT-123-02-F-D variants?

A: Samtec CLT series connectors are supplied in tube packaging (standard), tape & reel format (-TR suffix), or unspecified packaging. Tape & reel packaging is optimized for automated pick and place assembly and high-volume production runs.

Q: Are all substitute parts rated for the same voltage and current?

A: Amphenol ICC 55508-146 and 55508-146LF are rated at 200V and 2A. Samtec CLT series connectors are rated at 4.1A per contact with no specified voltage rating in the provided data. Verify voltage requirements for your application before substitution.

Q: What is the moisture sensitivity level for these connectors?

A: All parts listed maintain MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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