55510-004 Equivalent & Substitute Parts

Part Overview

The 55510-004 is a 4-position receptacle connector manufactured by Amphenol ICC (FCI) from the Minitek® 2.00mm series. This surface mount board-to-board connector features gold-plated mating contacts, a 0.079" (2.00mm) pitch, and operates across -55°C to 125°C with a 2A current rating at 200V. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

55510-004

Amphenol ICC (FCI)In Stock: 97855510-004 Datasheet

Current PartRFQ

55510-004LF

Amphenol ICC (FCI)In Stock: 91355510-004LF Datasheet

DirectRFQ

A3-4DA-2SV(71)

Hirose Electric Co LtdIn Stock: 2549A3-4DA-2SV(71) Datasheet

MFR RecommendedRFQ

A3A-4DA-2SV(71)

Hirose Electric Co LtdIn Stock: 1109A3A-4DA-2SV(71) Datasheet

MFR RecommendedRFQ

MMS-102-02-H-DV-TR

Samtec Inc.In Stock: 1067MMS-102-02-H-DV-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 55510-004 is determined by the following critical parameters:

• Connector type (Receptacle)
• Number of positions (4)
• Pitch and row spacing (0.079" / 2.00mm)
• Mounting type (Surface Mount)
• Termination method (Solder)
• Fastening type (Push-Pull)
• Contact finish at mating interface (Gold)
• Flammability rating (UL94 V-0)

All identified substitutes meet these core electrical and mechanical requirements. Variations in secondary parameters such as insulation material, contact finish thickness, and operating temperature ranges are noted but do not preclude functional equivalence within the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

55510-004LF is the primary direct substitute. Manufactured by the same supplier (Amphenol ICC / FCI) within the identical Minitek® 2.00mm series, this part maintains full electrical and mechanical compatibility with the obsolete 55510-004. The primary distinction is product status: 55510-004LF is active and RoHS compliant, whereas the original is obsolete and non-compliant. Contact finish specifications are identical. This substitute is recommended for designs requiring minimal qualification effort.

A3-4DA-2SV(71) and A3A-4DA-2SV(71) are manufacturer-recommended alternatives from Hirose Electric Co Ltd. Both maintain the core 4-position, 2.00mm pitch, surface mount, push-pull architecture. The A3A variant includes a board guide feature. These parts operate within a reduced temperature range (-55°C to 85°C versus -55°C to 125°C) and carry a lower current rating (1A versus 2A). Both are RoHS compliant and active products. Selection of these alternatives requires verification that application thermal and current requirements do not exceed their specifications.

MMS-102-02-H-DV-TR from Samtec Inc. provides the highest current capacity (3.9A per contact) and thickest gold plating (30.0µin). This part maintains full mechanical and electrical compatibility at the connector interface level. Material flammability rating is not specified. This option is suitable for applications requiring enhanced current handling or contact durability.

Frequently Asked Questions (FAQ)

Q: Can 55510-004LF be used as a direct replacement for 55510-004?

A: Yes. Both parts share identical electrical and mechanical specifications within the Minitek® 2.00mm series. The primary difference is product status and RoHS compliance. 55510-004LF is the recommended substitute for new designs and production continuity.

Q: What are the key differences between Amphenol and Hirose alternatives?

A: The Hirose A3 series (A3-4DA-2SV(71) and A3A-4DA-2SV(71)) operate at a reduced maximum temperature of 85°C and carry a lower current rating of 1A. The A3A includes a board guide feature. Both are RoHS compliant and active. Selection depends on whether your application requires the full -55°C to 125°C range and 2A current capacity of the original.

Q: Is the Samtec MMS-102-02-H-DV-TR compatible with existing PCB layouts?

A: The MMS-102-02-H-DV-TR maintains the same 0.079" (2.00mm) pitch, 2-row configuration, and surface mount footprint. However, insulation height differs slightly (0.177" versus 0.165" for Hirose parts). Verify PCB layout clearances and mating connector compatibility before implementation.

Q: What is the significance of contact finish thickness variations?

A: Contact finish thickness affects durability and wear resistance. The original 55510-004 and its direct substitute 55510-004LF specify 1.97µin (0.050µm). Hirose alternatives provide 8.00µin (0.203µm), and Samtec provides 30.0µin (0.76µm). Thicker plating extends contact life in high-cycle mating applications but does not affect electrical performance in standard use.

Q: Are all substitutes RoHS compliant?

A: 55510-004LF, A3-4DA-2SV(71), A3A-4DA-2SV(71), and MMS-102-02-H-DV-TR are all RoHS compliant (RoHS3 or RoHS Compliant status). The original 55510-004 is RoHS non-compliant.

Q: Which substitute should I select for new designs?

A: For designs requiring the full operating temperature range (-55°C to 125°C) and 2A current rating, select 55510-004LF. For applications with reduced thermal or current requirements, Hirose A3 series parts offer active product status and RoHS compliance. For high-cycle mating applications, the Samtec MMS-102-02-H-DV-TR provides enhanced contact durability.