Amphenol ICC 55508-104 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-104 is a 4-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 a push-pull fastening mechanism rated for 2A at 200V. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives from both Amphenol ICC and cross-manufacturer sources are available with compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	4
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Contact Type	Female Socket
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
Insulation Material	Plastic
Contact Material	Phosphor Bronze

Substitute Part Grouping Explanation

Substitution for the 55508-104 is based on strict equivalence across the following critical parameters:

Connector type: Receptacle with female socket contacts
Position count and arrangement: 4 positions in 2 rows
Mating pitch and row spacing: 0.079" (2.00mm)
Mounting method: Surface mount with solder termination
Fastening mechanism: Push-pull
Mating contact finish: Gold plating
Operating temperature range: -55°C ~ 125°C
Flammability rating: UL94 V-0
Current and voltage ratings: 2A minimum, 200V minimum

Substitute parts are grouped into two categories:

Category 1: Direct Amphenol ICC Equivalent The 55508-104LF is the active production equivalent from Amphenol ICC, differing only in RoHS compliance status and contact post finish (tin instead of tin-lead).

Category 2: Cross-Manufacturer Alternatives (Samtec CLT Series) Samtec CLT-102 series receptacles meet all critical electrical and mechanical parameters. These parts are available in multiple configurations: standard top-entry, bottom-entry variants, and packaging options (bulk or tape & reel). The CLT series uses liquid crystal polymer (LCP) insulation instead of plastic and provides higher current rating per contact (4.1A vs. 2A), offering enhanced performance margins.

Parameter Comparison

Parameter	55508-104 (Main)	55508-104LF	CLT-102-02-F-D	CLT-102-02-F-D-BE	CLT-102-02-F-D-BE-TR	CLT-102-02-F-D-TR	CLT-102-02-FM-D	CLT-102-02-FM-D-BE	CLT-102-02-FM-D-BE-TR	CLT-102-02-FM-D-TR	CLT-102-02-G-D
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec	Samtec
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle	Receptacle
Number of Positions	4	4	4	4	4	4	4	4	4	4	4
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
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
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 (30.0µin)	Gold (30.0µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (3.00µin)	Gold (10.0µin)
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
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
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

Engineering Selection Recommendations

For Direct Replacement (Same Manufacturer): The 55508-104LF is the active production equivalent from Amphenol ICC. This part maintains identical electrical and mechanical specifications while offering RoHS compliance. The transition from tin-lead to tin contact post finish does not affect mating performance. This option is recommended for applications requiring continuity with the original Amphenol ICC Minitek® 2.00mm series.

For Cross-Manufacturer Substitution (Samtec CLT Series): The Samtec CLT-102 series provides full functional equivalence with enhanced performance characteristics. All CLT variants meet the critical parameters: 4-position, 2.00mm pitch, surface mount, push-pull fastening, and gold-plated mating contacts. The CLT series offers:

Higher current rating (4.1A per contact vs. 2A) providing additional design margin
Liquid crystal polymer insulation offering superior dimensional stability
Multiple entry configurations (standard top-entry and bottom-entry variants)
Packaging flexibility (bulk or tape & reel options)
Active production status with ROHS3 compliance

Packaging Considerations:

Standard top-entry: CLT-102-02-F-D (bulk), CLT-102-02-F-D-TR (tape & reel)
Bottom-entry: CLT-102-02-F-D-BE (bulk), CLT-102-02-F-D-BE-TR (tape & reel)
Mated configuration: CLT-102-02-FM-D (bulk), CLT-102-02-FM-D-TR (tape & reel)
Mated bottom-entry: CLT-102-02-FM-D-BE (bulk), CLT-102-02-FM-D-BE-TR (tape & reel)
Dual-row variant: CLT-102-02-G-D (bulk)

Frequently Asked Questions (FAQ)

Q: Can the 55508-104LF be used as a direct drop-in replacement for the 55508-104? A: Yes. The 55508-104LF is electrically and mechanically equivalent. The primary differences are RoHS compliance and contact post finish (tin vs. tin-lead), neither of which affects mating performance or board-level compatibility.

Q: What are the key differences between Amphenol ICC and Samtec CLT alternatives? A: Both meet the critical substitution parameters: 4-position, 2.00mm pitch, surface mount, push-pull fastening, and gold mating contacts. The Samtec CLT series provides higher current rating (4.1A vs. 2A per contact) and uses liquid crystal polymer insulation instead of plastic. Both are active production parts with current compliance certifications.

Q: Does the insulation material change (plastic to LCP) affect compatibility? A: No. Liquid crystal polymer insulation in the CLT series maintains the same electrical properties, operating temperature range (-55°C ~ 125°C), and flammability rating (UL94 V-0) as the plastic insulation in the original part. LCP provides enhanced dimensional stability and mechanical properties.

Q: What is the difference between standard and bottom-entry CLT variants? A: Standard top-entry variants (CLT-102-02-F-D) have contacts accessible from the top of the connector. Bottom-entry variants (CLT-102-02-F-D-BE) have contacts accessible from the bottom, accommodating different PCB layout requirements. Both are electrically and mechanically equivalent.

Q: Are tape & reel packaged parts (TR suffix) functionally different from bulk packaged parts? A: No. Tape & reel packaging is a supply format only. Parts packaged as CLT-102-02-F-D-TR are identical to CLT-102-02-F-D in bulk packaging. The TR designation indicates automated assembly compatibility and does not affect electrical or mechanical performance.

Q: What is the significance of the mated configuration variants (FM suffix)? A: Mated configuration parts (CLT-102-02-FM-D) come with contacts pre-installed in the housing. Standard variants (CLT-102-02-F-D) are supplied with empty housings. Both are functionally equivalent when fully assembled; the choice depends on assembly process requirements.

Q: Is the lower gold plating thickness on CLT parts (3.00µin vs. 30.0µin) a concern? A: No. Both plating thicknesses meet the functional requirements for gold mating contact finish. The CLT series uses 3.00µin plating, which is within industry standards for receptacle connectors. The CLT-102-02-G-D variant provides 10.0µin plating if additional thickness is required.

Q: Can I mix and match CLT variants in the same assembly? A: Yes, provided the critical parameters remain constant: 4-position, 2.00mm pitch, surface mount, push-pull fastening, and gold mating contacts. Mixing top-entry and bottom-entry variants or different packaging formats is acceptable from an electrical and mechanical standpoint; design layout determines the appropriate variant selection.

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