Amphenol ICC 55508-346 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55508-346 is a 46-position receptacle connector from the Minitek® 2.00mm series, designed for surface mount board-to-board 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 the core electrical and mechanical specifications while offering improved compliance status and expanded feature options.

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 to 125°C
Material Flammability Rating	UL94 V-0
Current Rating	2A (main part); 4.1A per contact (substitutes)
Voltage Rating	200V (main part)
Insulation Material	Plastic (main part); Liquid Crystal Polymer - LCP (substitutes)
Contact Material	Phosphor Bronze
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: connector type (receptacle), number of positions (46), mating pitch (0.079" / 2.00mm), row configuration (2 rows at 0.079" spacing), mounting method (surface mount), termination type (solder), fastening mechanism (push-pull), mating contact finish (gold), operating temperature range (-55°C to 125°C), and flammability rating (UL94 V-0).

All substitute parts listed maintain these critical parameters. Variations exist in contact finish thickness, insulation material composition, connector entry style (standard vs. bottom entry), packaging format, and integrated features (board guide, pick and place capability). These variations do not affect functional interchangeability for board-to-board mating applications.

The Amphenol ICC 55508-346LF represents a direct variant with improved RoHS compliance. Samtec CLT series parts provide cross-manufacturer alternatives with enhanced current ratings and material specifications while preserving all core mechanical and electrical compatibility requirements.

Parameter Comparison

Parameter	55508-346	55508-346LF	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	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 to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 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
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	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)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The 55508-346 is obsolete and no longer in active production. The 55508-346LF provides the direct replacement from Amphenol ICC with identical mechanical and electrical specifications while achieving RoHS compliance. This variant is the preferred choice for applications requiring continuity within the Amphenol ICC product line.

Samtec CLT series receptacles (CLT-123-02-F-D and variants) represent active cross-manufacturer alternatives. All CLT variants maintain full mechanical and electrical compatibility with the original 55508-346 specification. CLT parts offer ROHS3 compliance and higher current ratings (4.1A per contact vs. 2A), providing enhanced performance margins for power distribution applications.

Selection between standard and bottom-entry CLT configurations depends on PCB layout requirements. Standard CLT-123-02-F-D suits conventional board-to-board stacking. Bottom-entry variants (CLT-123-02-F-D-BE and derivatives) accommodate space-constrained designs where vertical clearance is limited.

Packaging format selection follows manufacturing process requirements: tube packaging for manual assembly, tape and reel (TR) for automated pick-and-place operations. CLT-123-02-F-D-BE-A-P-TR and CLT-123-02-F-D-K-TR include integrated pick-and-place features for high-volume production environments.

All substitute parts carry identical REACH unaffected status and MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with standard storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can CLT-123 series connectors directly replace the 55508-346 in existing designs?

A: Yes. All CLT-123 variants maintain the core mechanical and electrical specifications: 46 positions, 0.079" (2.00mm) pitch, 2-row configuration, surface mount termination, and push-pull fastening. PCB footprints are compatible. The reduced insulation height (0.083" vs. 0.091") and lower contact finish thickness (3.00µin vs. 15.0µin) do not affect functional interchangeability for board-to-board mating.

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

A: Standard CLT-123-02-F-D receptacles accept mating connectors from above the PCB surface. Bottom-entry variants (CLT-123-02-F-D-BE series) orient the mating interface toward the board underside, enabling compact stacking in space-constrained applications. Both configurations maintain identical electrical performance and 46-position capacity.

Q: Which CLT variant should be selected for automated assembly?

A: CLT-123-02-F-D-BE-A-P-TR and CLT-123-02-F-D-K-TR include pick-and-place features and tape-and-reel packaging, optimizing throughput in high-volume production. The "-TR" suffix indicates tape and reel format; the "-P" or "-K" designations specify pick-and-place compatibility.

Q: Does the reduced gold plating thickness on CLT parts affect reliability?

A: No. The 3.00µin (0.076µm) gold finish on CLT parts meets industry standards for mating contact durability and corrosion resistance. The thicker 15.0µin (0.38µm) finish on the original 55508-346 provides equivalent long-term performance; the thinner CLT specification is sufficient for the specified operating environment and mating cycle requirements.

Q: Are there compliance differences between 55508-346LF and CLT series substitutes?

A: The 55508-346LF achieves RoHS compliance; CLT series parts achieve ROHS3 compliance, representing a more stringent standard. Both meet REACH unaffected status. For applications subject to RoHS or ROHS3 mandates, CLT series parts provide enhanced regulatory alignment.

Q: What is the current rating difference, and does it matter for my application?

A: The original 55508-346 is rated 2A; CLT substitutes are rated 4.1A per contact. Higher current ratings provide design margin for power distribution applications. If your design operates below 2A per contact, both specifications are functionally equivalent. For applications approaching or exceeding 2A, CLT parts offer improved performance headroom.

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