Amphenol ICC 55508-340 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-340 is a 40-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, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility while offering active product status and improved compliance certifications.

Key Parameters

Parameter	55508-340
Connector Type	Receptacle
Number of Positions	40
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
Voltage Rating	200V
Insulation Material	Plastic
Contact Material	Phosphor Bronze
RoHS Status	Non-compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: connector type (receptacle), number of positions (40), mating pitch (0.079"/2.00mm), row configuration (2 rows with 0.079" spacing), mounting method (surface mount), termination type (solder), 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 55508-340LF, which maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. Secondary substitutes from Samtec Inc. (CLT series) meet all core mechanical and electrical parameters but introduce variations in insulation material (liquid crystal polymer vs. plastic), contact finish thickness, and current rating per contact. These Samtec alternatives are qualified substitutes where mechanical envelope and electrical performance align with application requirements.

Parameter Comparison

Parameter	55508-340	55508-340LF	CLT-120-02-F-D	CLT-120-02-F-D-A	CLT-120-02-F-D-A-P	CLT-120-02-F-D-A-P-TR	CLT-120-02-F-D-A-TR	CLT-120-02-F-D-BE	CLT-120-02-F-D-BE-A	CLT-120-02-F-D-BE-A-K	CLT-120-02-F-D-BE-A-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.
Number of Positions	40	40	40	40	40	40	40	40	40	40	40
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	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)
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
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
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)
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
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
Connector Type Detail	Standard Receptacle	Standard Receptacle	Standard Receptacle	Standard Receptacle	Standard Receptacle	Standard Receptacle	Standard Receptacle	Bottom Entry Receptacle	Bottom Entry Receptacle	Bottom Entry Receptacle	Bottom Entry Receptacle

Engineering Selection Recommendations

The Amphenol ICC 55508-340LF is the direct functional equivalent, maintaining identical electrical and mechanical specifications while transitioning from obsolete to active product status. This part offers RoHS compliance and improved supply chain availability, making it the primary selection for new designs or direct replacement in existing applications.

Samtec CLT series receptacles (CLT-120-02-F-D through CLT-120-02-F-D-BE-A-K-TR) are qualified substitutes where mechanical envelope compatibility is confirmed. These parts maintain all critical parameters: 40-position configuration, 0.079" (2.00mm) pitch, 2-row layout, surface mount solder termination, push-pull fastening, gold mating contacts, and -55°C to 125°C operating range. All CLT variants carry active product status and ROHS3 compliance.

Differences between Amphenol and Samtec options include insulation material (plastic vs. liquid crystal polymer), contact finish thickness (15.0µin vs. 3.00µin), and current rating per contact (2A vs. 4.1A). The CLT series offers higher current capacity and improved thermal stability through LCP insulation. Bottom entry variants (CLT-120-02-F-D-BE series) accommodate alternative PCB routing requirements while maintaining electrical compatibility.

Packaging variants (tube, tape & reel, pick and place features) are available across the CLT line to support manufacturing process requirements. Selection between standard and bottom entry configurations depends on PCB layout constraints and mating connector orientation.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 55508-340LF directly replace the obsolete 55508-340?

A: Yes. The 55508-340LF maintains identical electrical and mechanical specifications, including 40-position configuration, 0.079" (2.00mm) pitch, 2-row spacing, surface mount solder termination, push-pull fastening, gold mating contacts, and -55°C to 125°C operating temperature. The primary differences are active product status and RoHS compliance.

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

A: Both maintain identical core mechanical and electrical parameters. Samtec CLT parts feature liquid crystal polymer insulation versus plastic, reduced contact finish thickness (3.00µin vs. 15.0µin), and higher current rating per contact (4.1A vs. 2A). All CLT variants are active products with ROHS3 compliance.

Q: Are Samtec CLT-120-02-F-D-BE bottom entry variants mechanically compatible?

A: Bottom entry variants maintain all electrical specifications and mating pitch requirements. Compatibility depends on PCB layout and connector orientation requirements. Confirm mechanical envelope fit with your specific application before selection.

Q: What packaging options are available for the CLT series?

A: Samtec offers tube packaging, tape & reel (TR), and pick and place (K) variants. CLT-120-02-F-D-A-P-TR combines tape & reel with pick and place features. Select packaging based on manufacturing process requirements and volume.

Q: Does the reduced contact finish thickness on CLT parts affect reliability?

A: Contact finish thickness differences (15.0µin vs. 3.00µin) are within design specifications for both product lines. Both maintain gold mating contact finish and are rated for identical operating conditions. Selection should be based on application requirements and supply availability.

Q: Are all substitute parts RoHS compliant?

A: The original 55508-340 is RoHS non-compliant. The 55508-340LF is RoHS compliant. All Samtec CLT variants carry ROHS3 compliance certification.

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