Amphenol ICC 55510-020 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 55510-020 is a 20-position receptacle connector from the Minitek® 2.00mm series, designed for surface mount board-to-board applications. This connector features a 0.079" (2.00mm) pitch, gold-plated mating contacts, 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

55510-020

Amphenol ICC (FCI)In Stock: 122455510-020 Datasheet

Current PartRFQ

55510-020LF

Amphenol ICC (FCI)In Stock: 86155510-020LF Datasheet

DirectRFQ

A3-20DA-2SV(71)

Hirose Electric Co LtdIn Stock: 5302A3-20DA-2SV(71) Datasheet

MFR RecommendedRFQ

A3A-20DA-2SV(71)

Hirose Electric Co LtdIn Stock: 8339A3A-20DA-2SV(71) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 55510-020 is determined by the following critical parameters: 20-position count, 0.079" (2.00mm) mating pitch, 2-row configuration, surface mount termination, female socket contact type, gold mating contact finish, push-pull fastening, and compatibility within the specified voltage and current ratings.

The substitute parts are grouped into two categories:

Direct Manufacturer Equivalent (Same Series): The 55510-020LF is an Amphenol ICC part from the same Minitek® 2.00mm series with identical mechanical and electrical specifications. The primary difference is RoHS compliance status and contact finish on the post (Tin vs. Tin-Lead).

Cross-Manufacturer Alternatives (Hirose Electric): The A3-20DA-2SV(71) and A3A-20DA-2SV(71) are Hirose Electric receptacles from the A3 series that match the core substitution criteria: 20 positions, 0.079" (2.00mm) pitch, 2-row layout, surface mount, female socket contacts, gold mating finish, and push-pull fastening. These parts operate at reduced current (1A vs. 2A) and temperature range (-55°C ~ 85°C vs. -55°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Series): The 55510-020LF is the primary substitute for the obsolete 55510-020. Both parts maintain identical mechanical dimensions, electrical ratings (2A at 200V), and operating temperature range (-55°C ~ 125°C). The 55510-020LF is active in production and RoHS compliant, making it suitable for new designs and legacy system support.

For Cross-Manufacturer Substitution: The Hirose Electric A3 series parts (A3-20DA-2SV(71) and A3A-20DA-2SV(71)) provide functional equivalence with the following constraints: reduced current rating (1A vs. 2A) and reduced maximum operating temperature (85°C vs. 125°C). These parts are appropriate only for applications where the lower electrical and thermal specifications are acceptable. The A3A-20DA-2SV(71) includes a board guide feature not present in the A3-20DA-2SV(71).

All substitute parts maintain the critical parameters: 20-position count, 0.079" (2.00mm) pitch, 2-row configuration, surface mount termination, female socket contacts, gold mating finish, and push-pull fastening. All parts carry UL94 V-0 flammability rating and MSL 1 moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can the 55510-020LF directly replace the 55510-020 in existing designs?

A: Yes. The 55510-020LF is mechanically and electrically identical to the 55510-020, with the same 2A current rating, 200V voltage rating, and -55°C ~ 125°C operating temperature. The primary difference is RoHS compliance status. Both parts are from the Amphenol ICC Minitek® 2.00mm series and share identical mating pitch (0.079"), position count (20), and row configuration (2).

Q: What are the limitations of using Hirose A3 series substitutes?

A: The A3-20DA-2SV(71) and A3A-20DA-2SV(71) have reduced electrical and thermal specifications compared to the 55510-020. Current rating is 1A (vs. 2A) and maximum operating temperature is 85°C (vs. 125°C). These parts are suitable only for applications where these reduced ratings do not exceed system requirements. Mechanical compatibility (pitch, position count, row spacing, fastening type) is maintained.

Q: Are there physical dimension differences between the Amphenol and Hirose substitutes?

A: Minor differences exist. The Amphenol 55510-020 and 55510-020LF have an insulation height of 0.177" (4.50mm), while the Hirose A3 series parts measure 0.165" (4.20mm). The Hirose parts use Polyphenylene Sulfide (PPS) insulation material versus plastic in the Amphenol parts. These differences may affect PCB layout and mating stack height calculations.

Q: What is the difference between A3-20DA-2SV(71) and A3A-20DA-2SV(71)?

A: Both parts are electrically and mechanically equivalent with identical ratings and specifications. The A3A-20DA-2SV(71) includes a board guide feature, while the A3-20DA-2SV(71) does not. The board guide provides additional mechanical stability during mating. Both parts are available in higher inventory quantities.

Q: Are all substitute parts RoHS compliant?

A: The 55510-020 is RoHS non-compliant. The 55510-020LF is RoHS compliant. Both Hirose A3 series parts (A3-20DA-2SV(71) and A3A-20DA-2SV(71)) are ROHS3 compliant. For applications requiring RoHS compliance, the 55510-020LF or Hirose alternatives are required.

Q: What is the mating contact finish thickness difference between parts?

A: The Amphenol parts (55510-020 and 55510-020LF) have a gold mating contact finish thickness of 1.97µin (0.050µm). The Hirose A3 series parts have a thicker gold finish of 8.00µin (0.203µm). Thicker gold plating provides enhanced durability and corrosion resistance in high-cycle mating applications.