Amphenol ICC 55510-144 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55510-144 is a 44-position receptacle connector in the Minitek® 2.00mm series, designed for board-to-board applications with surface mount termination. This connector features gold-plated mating contacts, push-pull fastening, and operates across the industrial temperature range of -55°C to 125°C. The part is classified as obsolete, making equivalent substitutes from active manufacturers necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
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
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Current Rating	2A
Voltage Rating	200V
Insulation Material	Plastic
Contact Material	Phosphor Bronze
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the Amphenol ICC 55510-144 is based on strict electrical and mechanical compatibility criteria. All substitute parts must maintain the following core parameters:

44-position receptacle configuration with 2 rows
0.079" (2.00mm) mating pitch and row spacing
Surface mount solder termination
Push-pull fastening mechanism
Gold-plated mating contacts
Operating temperature range of -55°C to 125°C
Female socket contact type
Phosphor bronze contact material

The Samtec MMS series connectors meet these requirements and are classified as active products. Substitutes are grouped by two primary variants: full 44-position loaded connectors (MMS-122-02-F-DV variants) and 43-position loaded connectors (MMS-122-02-L-DV variants). Packaging options include tube and tape & reel configurations, with optional features such as pick-and-place compatibility and board lock mechanisms.

Parameter Comparison

Parameter	55510-144 (Main)	MMS-122-02-F-DV	MMS-122-02-F-DV-K-TR	MMS-122-02-F-DV-LC	MMS-122-02-F-DV-P-TR	MMS-122-02-F-DV-TR	MMS-122-02-L-DV-11	MMS-122-02-L-DV-20	MMS-122-02-L-DV-21	MMS-122-02-L-DV-23	MMS-122-02-L-DV-25
Manufacturer	Amphenol ICC	Samtec Inc.	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	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	44	44	44	44	44	44	44	44	44	44	44
Positions Loaded	All (44)	All (44)	All (44)	All (44)	All (44)	All (44)	43	43	43	43	43
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	30.0µin (0.76µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
Insulation Height	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)
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
Current Rating	2A	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact
Insulation Material	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)	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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	Not specified	Not specified	Not specified
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)

Engineering Selection Recommendations

The Samtec MMS-122 series provides direct functional equivalence to the obsolete Amphenol ICC 55510-144. All listed substitutes maintain mechanical and electrical compatibility through identical mating pitch, row configuration, contact geometry, and operating temperature specifications.

For new designs and production applications, the MMS-122-02-F-DV variants with full 44-position loading provide direct replacement capability. These parts are classified as active products with ROHS3 compliance, addressing regulatory requirements that the original part does not meet.

The MMS-122-02-L-DV variants with 43-position loading are suitable only for applications where one position remains unused. These parts are also active products and offer the same electrical and mechanical performance within their specified configuration.

Packaging selection depends on assembly requirements: tube packaging for manual or low-volume assembly, and tape & reel for automated pick-and-place operations. The MMS-122-02-F-DV-LC variant includes board lock features for enhanced mechanical retention. The MMS-122-02-F-DV-K-TR and MMS-122-02-F-DV-P-TR variants include pick-and-place compatibility for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can MMS-122 series connectors directly replace the Amphenol ICC 55510-144?

A: Yes. The Samtec MMS-122 series maintains identical mating pitch (0.079" / 2.00mm), row spacing, contact configuration, and operating temperature range. All electrical and mechanical parameters required for board-to-board connectivity are equivalent.

Q: What is the difference between MMS-122-02-F-DV and MMS-122-02-L-DV variants?

A: The MMS-122-02-F-DV variants have all 44 positions loaded with contacts. The MMS-122-02-L-DV variants have 43 positions loaded, with one position remaining empty. Selection depends on whether your application requires all 44 contact positions or can operate with 43 active positions.

Q: Does packaging affect electrical or mechanical performance?

A: No. Tube and tape & reel packaging options provide the same connector performance. Packaging selection is based on assembly process requirements: tube for manual assembly and tape & reel for automated pick-and-place operations.

Q: What is the significance of the board lock feature in MMS-122-02-F-DV-LC?

A: The board lock feature provides enhanced mechanical retention between mating connectors. This is an optional feature and does not affect electrical performance. Selection depends on application requirements for mechanical stability.

Q: Are the Samtec MMS-122 connectors RoHS compliant?

A: Most MMS-122-02-F-DV variants are ROHS3 compliant. The original Amphenol ICC 55510-144 is RoHS non-compliant. Samtec substitutes address regulatory compliance requirements for new designs.

Q: What is the current rating difference between the original part and substitutes?

A: The Amphenol ICC 55510-144 is rated at 2A, while Samtec MMS-122 variants are rated at 3.9A per contact. The higher current rating of substitutes provides additional design margin and does not affect compatibility.

Q: How do contact finish thicknesses compare?

A: The original part specifies 30.0µin (0.76µm) gold plating. MMS-122-02-F-DV variants specify 3.00µin (0.076µm), and MMS-122-02-L-DV variants specify 10.0µin (0.25µm). All thicknesses provide adequate gold plating for reliable mating contact performance.

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