Amphenol ICC 55510-048 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55510-048 is a 48-position receptacle connector in 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 classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives from both Amphenol ICC and Samtec Inc. provide direct functional replacement with enhanced compliance and availability.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	48
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
Insulation Color	Black
Insulation Height	0.177" (4.50mm)
Operating Temperature	-55°C ~ 125°C
Current Rating	2A
Voltage Rating	200V
Contact Material	Phosphor Bronze
Insulation Material	Plastic
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: connector type (receptacle), contact type (female socket), number of positions (48), mating pitch (0.079" / 2.00mm), number of rows (2), row spacing (0.079" / 2.00mm), mounting type (surface mount), termination method (solder), fastening type (push-pull), contact finish (gold), insulation color (black), insulation height (0.177" / 4.50mm), and operating temperature range (-55°C to 125°C).

The 55510-048LF from Amphenol ICC is a direct equivalent with identical electrical and mechanical specifications, differing only in contact finish post material (tin versus tin-lead) and RoHS compliance status. This part maintains full compatibility with the original design.

Samtec Inc. MMS series connectors (MMS-124-02-F-DV, MMS-124-02-F-DV-A, MMS-124-02-L-DV-A, and variants) meet all core substitution criteria. These parts share identical pitch, position count, row configuration, mounting method, and operating temperature range. Differences exist in insulation material (liquid crystal polymer versus plastic), contact finish thickness specifications, and available features (board guide, pick and place capability). Current rating per contact is higher in Samtec parts (3.9A versus 2A), providing enhanced electrical capacity within the same voltage specification.

Parameter Comparison

Parameter	55510-048	55510-048LF	MMS-124-02-F-DV	MMS-124-02-F-DV-A	MMS-124-02-L-DV-A	MMS-124-02-L-DV-A-K-TR
Manufacturer	Amphenol ICC	Amphenol ICC	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Number of Positions	48	48	48	48	48	48
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)
Number of Rows	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold
Insulation Color	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)
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
Current Rating	2A	2A	3.9A per Contact	3.9A per Contact	3.9A per Contact	3.9A per Contact
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Plastic	Plastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 55510-048, the 55510-048LF from Amphenol ICC provides identical form, fit, and function with the advantage of active product status and RoHS compliance. This part is the preferred choice for designs where component sourcing from a single manufacturer is required.

For applications where cross-manufacturer substitution is acceptable, Samtec Inc. MMS-124 series connectors offer functional equivalence with enhanced electrical performance (3.9A per contact versus 2A) and ROHS3 compliance. The MMS-124-02-L-DV-A-K-TR variant is optimized for automated assembly with pick-and-place capability and tape & reel packaging. The MMS-124-02-F-DV variant provides standard tube packaging for manual assembly workflows.

All substitute parts maintain compatibility with the original 55510-048 across critical mechanical and electrical parameters. Selection between Amphenol ICC and Samtec alternatives depends on supply chain preferences, packaging requirements, and assembly methodology.

Frequently Asked Questions (FAQ)

Q: Can MMS-124 series connectors from Samtec directly replace the 55510-048?

A: Yes. Both connector families share identical pitch (0.079" / 2.00mm), position count (48), row configuration (2 rows), mounting method (surface mount), and operating temperature range (-55°C to 125°C). Mechanical and electrical compatibility is established across these core parameters.

Q: What is the difference between 55510-048 and 55510-048LF?

A: The 55510-048LF is the active production equivalent of the obsolete 55510-048. Both parts are identical in form, fit, and function. The primary differences are product status (active versus obsolete), RoHS compliance (compliant versus non-compliant), and contact finish post material (tin versus tin-lead).

Q: Why do Samtec MMS-124 connectors have higher current ratings (3.9A per contact)?

A: Current rating differences reflect design specifications for each connector family. The higher rating in Samtec parts does not affect substitution eligibility, as the original 55510-048 specification of 2A per contact remains within the Samtec part capability.

Q: What packaging options are available for substitute parts?

A: Amphenol ICC 55510-048LF is supplied in tube packaging. Samtec MMS-124 variants are available in tube packaging (standard) or tape & reel (TR) packaging for automated assembly. Selection depends on assembly process requirements.

Q: Are there differences in insulation material between the original and substitute parts?

A: Yes. The 55510-048 and 55510-048LF use plastic insulation, while Samtec MMS-124 series uses liquid crystal polymer (LCP). Both materials meet the same operating temperature range and moisture sensitivity specifications. LCP provides enhanced dimensional stability and chemical resistance.

Q: Which substitute part is recommended for new designs?

A: For new designs, either the Amphenol ICC 55510-048LF or Samtec MMS-124-02-L-DV-A-K-TR are recommended. The Amphenol part maintains design continuity with the original connector family. The Samtec part offers enhanced electrical performance and optimized packaging for high-volume automated assembly.

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