Equivalent & Substitute Parts for 55508-344

Part Overview

The Amphenol ICC 55508-344 is a 44-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board surface mount applications. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing production and maintenance requirements. The connector features gold-plated mating contacts, push-pull fastening, and operates across the industrial temperature range of -55°C to 125°C.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	44
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Current Rating	2A
Voltage Rating	200V
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution of the 55508-344 is determined by strict equivalence across the following critical parameters: connector type (receptacle), number of positions (44), mating pitch (0.079" / 2.00mm), number of rows (2), row spacing (0.079" / 2.00mm), mounting type (surface mount), fastening type (push-pull), contact finish (gold), operating temperature range (-55°C to 125°C), and material flammability rating (UL94 V-0).

The primary direct substitute is the 55508-344LF from Amphenol ICC, which maintains identical mechanical and electrical specifications while offering active product status and RoHS compliance. The Samtec CLT series connectors (CLT-122-02-F-D and variants) provide functional equivalence with enhanced current rating capability (4.1A per contact versus 2A) and alternative insulation material (liquid crystal polymer versus plastic), available in multiple configurations including bottom entry and pick-and-place variants.

Parameter Comparison

Parameter	55508-344	55508-344LF	CLT-122-02-F-D	CLT-122-02-F-D-A	CLT-122-02-F-D-BE	CLT-122-02-F-D-BE-A	CLT-122-02-F-D-BE-A-K	CLT-122-02-F-D-BE-A-K-TR	CLT-122-02-F-D-BE-A-P-TR	CLT-122-02-F-D-BE-A-TR
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Receptacle, Bottom Entry
Number of Positions	44	44	44	44	44	44	44	44	44	44
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)
Number of Rows	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fastening Type	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
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)
Insulation Color	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)
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
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
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
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)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 55508-344LF represents the direct replacement for the obsolete 55508-344, maintaining identical mechanical and electrical specifications while providing active product status and RoHS compliance. This part is recommended for applications requiring minimal design modification and maximum compatibility with existing mating connectors.

The Samtec CLT-122 series provides functionally equivalent alternatives with enhanced electrical performance (4.1A per contact rating) and active product status. Selection among CLT variants depends on specific application requirements:

CLT-122-02-F-D serves as the base equivalent for standard top-entry applications. CLT-122-02-F-D-A adds board guide features for improved mechanical alignment. CLT-122-02-F-D-BE and CLT-122-02-F-D-BE-A provide bottom-entry configurations for applications requiring alternative PCB routing. CLT-122-02-F-D-BE-A-K and CLT-122-02-F-D-BE-A-K-TR include pick-and-place features for automated assembly. CLT-122-02-F-D-BE-A-P-TR and CLT-122-02-F-D-BE-A-TR offer tape and reel packaging for high-volume production.

All substitute parts maintain UL94 V-0 flammability rating and -55°C to 125°C operating temperature range. The Samtec CLT series uses liquid crystal polymer insulation material versus plastic in the Amphenol parts, with reduced mating contact finish thickness (3.00µin versus 15.0µin) and slightly lower insulation height (0.083" versus 0.091").

Frequently Asked Questions (FAQ)

Q: Can the 55508-344LF be used as a direct replacement for the 55508-344?

A: Yes. The 55508-344LF maintains identical mechanical and electrical specifications including 44 positions, 0.079" (2.00mm) pitch, 2-row configuration, surface mount termination, push-pull fastening, and gold mating contact finish. The primary differences are active product status and RoHS compliance.

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

A: Both maintain identical connector type, position count, pitch, row spacing, mounting type, and fastening type. Samtec CLT connectors provide higher current rating (4.1A per contact versus 2A), use liquid crystal polymer insulation instead of plastic, and feature reduced mating contact finish thickness (3.00µin versus 15.0µin). Samtec parts are available in multiple configurations including bottom-entry and pick-and-place variants.

Q: Does insulation height difference affect compatibility?

A: The Samtec CLT series has 0.083" (2.10mm) insulation height compared to 0.091" (2.30mm) for Amphenol parts. This 0.008" difference may affect PCB layout and mating connector clearance. Verify mating connector specifications and available board space before selection.

Q: What packaging options are available for high-volume production?

A: The 55508-344LF is available in tube packaging. Samtec CLT variants offer multiple packaging options: standard tube (CLT-122-02-F-D through CLT-122-02-F-D-BE-A), tape and reel (CLT-122-02-F-D-BE-A-K-TR, CLT-122-02-F-D-BE-A-P-TR), and unspecified packaging (CLT-122-02-F-D-BE-A-K, CLT-122-02-F-D-BE-A-TR).

Q: Are all substitute parts RoHS compliant?

A: The 55508-344LF is RoHS compliant. All Samtec CLT variants are ROHS3 compliant. The original 55508-344 is RoHS non-compliant.

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

A: Bottom-entry connectors (CLT-122-02-F-D-BE variants) route mating contacts from the bottom of the connector body, enabling alternative PCB routing compared to standard top-entry designs (CLT-122-02-F-D variants). Mechanical compatibility with mating connectors must be verified for each configuration.

Q: Do pick-and-place variants affect electrical performance?

A: No. Pick-and-place features (indicated by -K or -P designators) are mechanical enhancements for automated assembly and do not alter electrical specifications or current rating.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message