55510-344LF Equivalent & Substitute Parts

Part Overview

The 55510-344LF is a 44-position receptacle connector manufactured by Amphenol ICC (FCI) in the Minitek® 2.00mm series. This surface mount board-to-board connector features gold-plated mating contacts, push-pull fastening, and is rated for 2A at 200V. The part is active and RoHS compliant, designed for general purpose, industrial, and medical applications. Equivalent parts are identified when connector architecture, electrical ratings, and mechanical interfaces align within specified tolerances, enabling direct substitution in compatible designs.

Substiute Parts

55510-344LF

Amphenol ICC (FCI)In Stock: 107555510-344LF Datasheet

Current PartRFQ

150244-2020-RB

3MIn Stock: 1510150244-2020-RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 150244-2020-RB (3M, 1502 series) qualifies as a substitute based on the following alignment of critical parameters:

• 44-position receptacle configuration with identical contact count
• 0.079" (2.00mm) mating pitch and row spacing
• 2-row board-to-board connector architecture
• Surface mount solder termination
• Push-pull fastening mechanism
• Gold-plated mating contacts
• Square contact geometry
• UL94 V-0 flammability rating
• RoHS compliance
• MSL 1 (Unlimited) moisture sensitivity

Substitution is valid where the electrical and mechanical interface requirements of the application fall within the overlapping specifications of both parts.

Parameter Comparison

Engineering Selection Recommendations

Both parts are active products with RoHS compliance and UL94 V-0 flammability certification. The 55510-344LF supports higher current capacity (2A versus 1A) and extended upper operating temperature (125°C versus 105°C). The 150244-2020-RB provides higher voltage rating (500VDC versus 200V) and thicker gold plating on mating contacts (30.0µin versus 15.0µin). Selection between these parts depends on application current and temperature requirements. The 55510-344LF is suitable for applications requiring 2A current capacity and operation to 125°C. The 150244-2020-RB is suitable for applications with lower current demands (≤1A) and higher voltage environments (up to 500VDC).

Frequently Asked Questions (FAQ)

Q: Can the 150244-2020-RB replace the 55510-344LF in all applications?

A: Substitution is valid only where application current requirements do not exceed 1A and maximum operating temperature does not exceed 105°C. Applications requiring 2A current or operation above 105°C require the 55510-344LF.

Q: What are the mechanical compatibility considerations?

A: Both connectors share identical mating pitch (0.079"), row spacing (0.079"), and 44-position configuration. Insulation height differs by 0.006" (0.15mm), which may affect board layout clearance in constrained designs.

Q: Are there differences in contact plating that affect performance?

A: The 150244-2020-RB features thicker gold plating (30.0µin versus 15.0µin), providing enhanced wear resistance in high-cycle mating applications. Both meet gold plating specifications for their respective current and voltage ratings.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity classification. Both are active products from their respective manufacturers.

Q: What is the difference in contact material?

A: The 55510-344LF uses phosphor bronze contacts; the 150244-2020-RB uses copper alloy contacts. Both materials are suitable for the specified electrical and mechanical requirements of their respective ratings.