Amphenol ICC 55508-306 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-306 is a 6-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 spacing, gold-plated mating contacts, and a push-pull fastening mechanism rated for 2A at 200V. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility (pitch, position count, current/voltage ratings) and mechanical compatibility (surface mount termination, board-to-board style, push-pull fastening).

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Number of Positions	6
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
Current Rating	2A
Voltage Rating	200V
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Mandatory Compatibility Parameters:

Connector Type: Receptacle (female socket)
Number of Positions: 6
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 Range: -55°C ~ 125°C
Material Flammability Rating: UL94 V-0

Allowable Variations:

Contact Finish Thickness - Mating: 3.00µin (0.076µm) is acceptable as a lower specification than the original 15.0µin (0.38µm)
Insulation Height: 0.083" (2.10mm) is acceptable as a lower specification than the original 0.091" (2.30mm)
Insulation Material: Liquid Crystal Polymer (LCP) is acceptable as an alternative to Plastic
Current Rating: 4.1A per Contact exceeds the original 2A requirement
Contact Finish - Post: Tin is acceptable as an alternative to Tin-Lead
Packaging: Bulk or Tape & Reel (TR) are both acceptable
Connector Style Variants: Standard receptacle and bottom entry receptacle variants are both acceptable

All Samtec CLT-103-02-F-D series parts meet these criteria and are qualified substitutes.

Parameter Comparison

Parameter	55508-306	55508-306LF	CLT-103-02-F-D	CLT-103-02-F-D-A	CLT-103-02-F-D-A-TR	CLT-103-02-F-D-BE	CLT-103-02-F-D-BE-A	CLT-103-02-F-D-BE-A-TR	CLT-103-02-F-D-BE-TR	CLT-103-02-F-D-TR	CLT-103-02-FM-D
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	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	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle
Number of Positions	6	6	6	6	6	6	6	6	6	6	6
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
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
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)
RoHS Status	RoHS non-compliant	RoHS 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

Primary Substitute - Direct Amphenol Replacement: 55508-306LF is the direct Amphenol ICC equivalent with active product status. This part maintains identical electrical and mechanical specifications to the original 55508-306 while offering RoHS compliance and Tube packaging. Selection of this part eliminates cross-manufacturer qualification requirements.

Secondary Substitutes - Samtec CLT-103 Series: The Samtec CLT-103-02-F-D series provides full electrical and mechanical compatibility with enhanced specifications. All CLT-103 variants are ROHS3 compliant and feature active product status. Current rating is increased to 4.1A per contact, exceeding the original 2A specification. Insulation material is upgraded to Liquid Crystal Polymer (LCP), providing superior thermal and chemical resistance compared to standard plastic.

Packaging Variants:

Bulk packaging: CLT-103-02-F-D, CLT-103-02-F-D-BE, CLT-103-02-FM-D
Tape & Reel (TR) packaging: CLT-103-02-F-D-A-TR, CLT-103-02-F-D-BE-A-TR, CLT-103-02-F-D-BE-TR, CLT-103-02-F-D-TR

Connector Style Variants:

Standard receptacle: CLT-103-02-F-D, CLT-103-02-F-D-A, CLT-103-02-F-D-A-TR, CLT-103-02-F-D-TR, CLT-103-02-FM-D
Bottom entry receptacle: CLT-103-02-F-D-BE, CLT-103-02-F-D-BE-A, CLT-103-02-F-D-BE-A-TR, CLT-103-02-F-D-BE-TR

Bottom entry variants are selected when PCB layout requires connector insertion from the board underside. Standard receptacle variants are selected for conventional top-side insertion applications.

Compliance Considerations: The original 55508-306 is RoHS non-compliant. All substitute parts (55508-306LF and CLT-103 series) are RoHS compliant, meeting current regulatory requirements for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: Can CLT-103-02-F-D series parts directly replace 55508-306 in existing designs? A: Yes. All CLT-103-02-F-D variants maintain the critical electrical and mechanical parameters: 6-position, 0.079" (2.00mm) pitch, surface mount solder termination, push-pull fastening, and gold-plated mating contacts. The connectors are mechanically and electrically interchangeable at the board level.

Q: What is the difference between standard and bottom entry CLT-103 variants? A: Standard receptacle variants (CLT-103-02-F-D, CLT-103-02-F-D-A, CLT-103-02-F-D-TR) accept mating connectors from the top of the PCB. Bottom entry variants (CLT-103-02-F-D-BE, CLT-103-02-F-D-BE-A, CLT-103-02-F-D-BE-TR) accept mating connectors from the bottom of the PCB. Selection depends on PCB layout and available space.

Q: What packaging options are available for CLT-103 substitutes? A: Bulk packaging is available for manual assembly and prototyping. Tape & Reel (TR) packaging is available for automated pick-and-place assembly. TR variants include board guide features on specified models.

Q: Does the reduced contact finish thickness on CLT-103 parts affect reliability? A: No. The CLT-103 series specifies 3.00µin (0.076µm) gold plating on mating contacts, which is within industry standards for gold-plated connectors. This thickness is sufficient for the specified 2A current rating and provides equivalent contact resistance and wear characteristics.

Q: Are CLT-103-02-FM-D parts compatible with standard CLT-103-02-F-D designs? A: CLT-103-02-FM-D is a variant with modified contact geometry. Compatibility must be verified against the mating connector specification. Consult connector documentation or contact the manufacturer for specific mating requirements.

Q: What is the advantage of LCP insulation material in CLT-103 parts? A: Liquid Crystal Polymer (LCP) provides superior thermal stability, chemical resistance, and dimensional stability compared to standard plastic insulation. LCP maintains mechanical properties across the full operating temperature range (-55°C to 125°C) and resists moisture absorption, making it suitable for industrial and medical applications.

Q: Can 55508-306LF be used as a direct replacement for 55508-306? A: Yes. 55508-306LF is the active production equivalent from Amphenol ICC with identical specifications. The primary difference is RoHS compliance and Tube packaging. This part is recommended for applications requiring Amphenol ICC sourcing or when cross-manufacturer qualification is not feasible.

Q: Which substitute part has the highest current rating? A: All CLT-103 series parts are rated for 4.1A per contact, exceeding the original 55508-306 specification of 2A. This provides design margin for applications with variable or peak current demands.

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