Equivalent & Substitute Parts for 55510-050

Part Overview

The Amphenol ICC 55510-050 is a 50-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 substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	50
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
Style	Board to Board

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters:

Connector type: Receptacle
Contact type: Female socket
Number of positions: 50
Pitch: 0.079" (2.00mm)
Number of rows: 2
Row spacing: 0.079" (2.00mm)
Mounting type: Surface mount
Termination: Solder
Fastening type: Push-pull
Contact finish (mating): Gold
Operating temperature range: -55°C minimum and 125°C maximum
Insulation color: Black
Insulation height: 0.177" (4.50mm)

Substitute parts are grouped into three categories based on manufacturer and series:

Category 1: Amphenol ICC Direct Variants – Same manufacturer, Minitek® 2.00mm series, with RoHS compliance upgrade and active product status.

Category 2: Molex Milli-Grid 87381 Series – Alternative manufacturer, equivalent mechanical and electrical specifications, active status with pick-and-place features.

Category 3: Samtec MMS and TLE Series – Alternative manufacturers offering enhanced current ratings and additional features while maintaining core substitution parameters.

Parameter Comparison

Parameter	55510-050	55510-050LF	0873815063	0873815074	MMS-125-02-L-DV-A-TR	TLE-125-01-G-DV-K-TR
Manufacturer	Amphenol ICC	Amphenol ICC	Molex	Molex	Samtec Inc.	Samtec Inc.
Series	Minitek® 2.00mm	Minitek® 2.00mm	Milli-Grid 87381	Milli-Grid 87381	MMS	TLE
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Pass Through
Number of Positions	50	50	50	50	50	50
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
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	2A	2A	1.9A	1.9A	3.9A per Contact	3.2A per Contact
Voltage Rating	200V	200V	125V	125V	—	—
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)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	—	Tube	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement with Amphenol ICC: The 55510-050LF is the primary direct substitute. It maintains identical mechanical and electrical specifications while upgrading to RoHS compliance and active product status. This part is suitable for applications requiring continuity with the original Minitek® 2.00mm series ecosystem.

For Alternative Manufacturer Solutions: Molex 0873815063 and 0873815074 provide equivalent board-to-board connectivity with active product status and ROHS3 compliance. These parts operate at reduced maximum temperature (105°C versus 125°C) and lower voltage rating (125V versus 200V). Selection depends on application thermal and voltage requirements.

For Enhanced Performance Requirements: Samtec MMS-125-02-L-DV-A-TR and TLE-125-01-G-DV-K-TR offer higher current ratings (3.9A and 3.2A per contact respectively) compared to the original 2A specification. The TLE series provides pass-through connector functionality with gold post finish. Both maintain the full -55°C to 125°C operating range and ROHS3 compliance.

Compliance Considerations: All active substitute parts meet ROHS3 compliance, addressing the non-compliant status of the obsolete 55510-050. Selection should align with application regulatory requirements and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can 55510-050LF directly replace 55510-050 in existing designs? A: Yes. The 55510-050LF maintains identical mechanical and electrical specifications while providing RoHS compliance and active product status. No design changes are required.

Q: What are the key differences between Amphenol ICC and Molex substitutes? A: Amphenol ICC 55510-050LF preserves the original operating temperature range (-55°C to 125°C) and voltage rating (200V). Molex 0873815063 and 0873815074 reduce maximum operating temperature to 105°C and voltage rating to 125V. Verify application requirements before selection.

Q: Why do Samtec parts show higher current ratings? A: Samtec MMS and TLE series are rated at 3.9A and 3.2A per contact respectively, compared to 2A for the original part. These ratings reflect the connector design and contact material specifications provided in the component data. Applications requiring higher current capacity may benefit from these alternatives.

Q: What is the difference between MMS-125-02-L-DV-A-TR and TLE-125-01-G-DV-K-TR? A: MMS-125-02-L-DV-A-TR is a standard receptacle with tin post finish. TLE-125-01-G-DV-K-TR is a pass-through receptacle with gold post finish, enabling signal routing through the connector. Both maintain 50-position, 2.00mm pitch configuration and full temperature range.

Q: Are packaging differences significant for substitution? A: Packaging format (tube, tape & reel) affects supply chain handling and assembly automation compatibility. Electrical and mechanical substitution remains valid across packaging variants. Verify packaging compatibility with manufacturing processes.

Q: Do all substitutes maintain the same insulation material? A: Amphenol ICC and Molex parts use plastic insulation. Samtec MMS and TLE series use Liquid Crystal Polymer (LCP) insulation. Both materials meet the specified insulation height and color requirements. LCP offers enhanced dimensional stability and thermal performance.

Q: What is the significance of "Number of Positions Loaded"? A: MMS-125-02-L-DV-29 and MMS-125-02-L-DV-A-39 are loaded with 49 positions, while all other parts are fully loaded with 50 positions. Verify application requirements for position count before selection.

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