Amphenol ICC 55510-040 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55510-040 is a 40-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 a 2-row configuration with push-pull fastening. 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 third-party manufacturers provide functional equivalence with improved availability and compliance status.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	40
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
Insulation Material	Plastic
Contact Material	Phosphor Bronze
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 55510-040 is determined by strict equivalence across the following critical parameters: connector type (receptacle), number of positions (40), 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 ~ 125°C), and insulation color (black). All substitute parts listed maintain these core electrical and mechanical specifications.

The substitute parts are grouped into two categories:

Direct Amphenol ICC Equivalent: 55510-040LF represents the active production equivalent with identical specifications to the obsolete 55510-040, differing only in contact finish post material (tin instead of tin-lead) and RoHS compliance status.

Samtec MMS Series Alternatives: The MMS-120 series from Samtec Inc. provides functional equivalence with enhanced specifications. These parts maintain all critical mating parameters while offering higher current ratings (3.9A per contact versus 2A), improved insulation material (Liquid Crystal Polymer instead of plastic), and active product status with ROHS3 compliance. Variants within the MMS series differ in packaging format, fastening features (board lock options), and pick-and-place compatibility.

Parameter Comparison

Parameter	55510-040	55510-040LF	MMS-120-02-F-DV	MMS-120-02-F-DV-A-P	MMS-120-02-F-DV-K-TR	MMS-120-02-F-DV-LC	MMS-120-02-F-DV-LC-K-TR	MMS-120-02-F-DV-LC-M	MMS-120-02-F-DV-LC-P	MMS-120-02-F-DV-LC-P-TR	MMS-120-02-F-DV-LC-TR
Manufacturer	Amphenol ICC	Amphenol ICC	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
Number of Positions	40	40	40	40	40	40	40	40	40	40	40
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
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	1.97µin (0.050µm)	1.97µin (0.050µm)	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	0.177" (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	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
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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant	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

For Direct Replacement: The 55510-040LF is the primary equivalent for the obsolete 55510-040. Both parts maintain identical mechanical and electrical specifications with matching pitch, position count, and operating temperature range. The 55510-040LF offers improved availability as an active product with RoHS compliance, making it the preferred choice for new designs and production continuity.

For Enhanced Performance Applications: The Samtec MMS-120 series provides functional equivalence with superior specifications. These connectors deliver higher current capacity (3.9A per contact versus 2A), improved insulation material (Liquid Crystal Polymer), and active product status with ROHS3 compliance. The MMS series is suitable for applications requiring higher current density or enhanced environmental performance.

Packaging and Feature Selection: Within the Samtec MMS-120 family, part selection depends on manufacturing requirements. Standard tube packaging is available in MMS-120-02-F-DV and MMS-120-02-F-DV-LC-M. Tape & Reel packaging for automated assembly is available in MMS-120-02-F-DV-K-TR and MMS-120-02-F-DV-LC-K-TR. Board lock features are available in MMS-120-02-F-DV-LC and variants with the "-LC" suffix. Pick-and-place compatibility is indicated by the "-A-P" or "-K-TR" suffixes.

Frequently Asked Questions (FAQ)

Q: Can the 55510-040LF be used as a direct drop-in replacement for the 55510-040?

A: Yes. The 55510-040LF maintains identical mating pitch (0.079" / 2.00mm), position count (40), row configuration (2 rows), mounting type (surface mount), and fastening mechanism (push-pull). Both parts are mechanically and electrically compatible. The primary difference is RoHS compliance status and contact finish post material, which do not affect functional compatibility.

Q: What are the key differences between Amphenol ICC 55510-040LF and Samtec MMS-120-02-F-DV?

A: Both connectors share identical mating specifications: 40 positions, 0.079" pitch, 2-row configuration, surface mount, and push-pull fastening. The MMS-120-02-F-DV offers higher current rating (3.9A per contact versus 2A), improved insulation material (Liquid Crystal Polymer versus plastic), and thicker gold plating on mating contacts (3.00µin versus 1.97µin). Both maintain the same operating temperature range (-55°C ~ 125°C) and moisture sensitivity level (MSL 1).

Q: Which Samtec MMS variant should I select for automated pick-and-place assembly?

A: Select MMS-120-02-F-DV-K-TR or MMS-120-02-F-DV-LC-K-TR for tape & reel packaging with pick-and-place compatibility. The "-K-TR" suffix indicates tape & reel format with pick-and-place features. For board lock functionality combined with pick-and-place capability, use MMS-120-02-F-DV-LC-K-TR.

Q: Are all substitute parts rated for the same voltage and current as the original 55510-040?

A: All substitute parts maintain the same operating temperature range (-55°C ~ 125°C) and moisture sensitivity level (MSL 1). The 55510-040LF matches the original 2A current rating and 200V voltage rating. The Samtec MMS-120 series provides higher current capacity (3.9A per contact) but does not specify voltage rating in the provided data. Verify voltage requirements for your specific application.

Q: What is the difference between MMS-120-02-F-DV-LC and MMS-120-02-F-DV-LC-K-TR?

A: Both variants feature board lock functionality (indicated by the "-LC" suffix) and identical electrical specifications. The primary difference is packaging: MMS-120-02-F-DV-LC uses standard tube packaging, while MMS-120-02-F-DV-LC-K-TR uses tape & reel format with pick-and-place compatibility (indicated by "-K-TR"). Select based on your assembly process requirements.

Q: Is the Samtec MMS-120 series suitable for medical applications?

A: The original 55510-040 lists medical applications in its specification. The Samtec MMS-120 series does not specify applications in the provided data. Verify application suitability and any additional certifications required for medical use before selecting MMS-120 variants.

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