A3C-24DA-2DSC(71) Equivalent & Substitute Parts

Part Overview

The A3C-24DA-2DSC(71) is a 24-position rectangular receptacle connector manufactured by Hirose Electric Co Ltd, designed for board-to-board or cable applications. This connector features 0.079" (2.00mm) pitch, through-hole solder termination, and gold-plated mating contacts. The part is currently active in production with 1,153 units in stock. Alternative equivalent parts may be required due to supply constraints, design flexibility, or specific application requirements that align with the electrical and mechanical parameters of this connector category.

Substiute Parts

A3C-24DA-2DSC(71)

Hirose Electric Co LtdIn Stock: 1189A3C-24DA-2DSC(71) Datasheet

Current PartRFQ

NPPN122AFCN-RC

Sullins Connector SolutionsIn Stock: 1839NPPN122AFCN-RC Datasheet

MFR RecommendedRFQ

SMM-112-01-S-D

Samtec Inc.In Stock: 950SMM-112-01-S-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the A3C-24DA-2DSC(71) are qualified based on the following critical parameters that determine functional interchangeability:

Core Matching Criteria:

• Number of positions: 24
• Pitch - mating: 0.079" (2.00mm)
• Number of rows: 2
• Row spacing - mating: 0.079" (2.00mm)
• Mounting type: Through hole
• Termination: Solder
• Contact finish - mating: Gold
• Material flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)

Acceptable Variations:

• Connector type (receptacle vs. header) when mechanical footprint and pin configuration remain compatible
• Contact finish thickness variations within industry standards
• Insulation material composition (PBT, PA6T, LCP) when flammability rating is maintained
• Operating temperature range extensions that do not reduce the minimum specification
• Current rating increases that exceed the 1A baseline requirement
• Voltage rating increases that exceed the 200VAC baseline requirement

Parameter Comparison

Engineering Selection Recommendations

NPPN122AFCN-RC (Sullins Connector Solutions): This part qualifies as a substitute based on matching core electrical and mechanical parameters. The connector type differs (header vs. receptacle), which requires verification of mating compatibility in the specific application. Operating temperature range extends to 105°C, providing enhanced thermal performance. Product status is active with 1,794 units in stock. RoHS3 compliance and MSL 1 rating align with environmental and handling requirements.

SMM-112-01-S-D (Samtec Inc., Tiger Eye™ SMM Series): This part qualifies as a substitute with identical connector type (receptacle) and matching core parameters. Current rating of 3.2A per contact and voltage rating of 350VAC exceed the baseline requirements, providing design margin. Operating temperature range extends to 125°C. Product status is active with 853 units in stock. RoHS3 compliance and MSL 1 rating align with environmental and handling requirements. Contact material differs (beryllium copper vs. phosphor bronze) and insulation material is liquid crystal polymer (LCP) instead of PBT.

Frequently Asked Questions (FAQ)

Q: Can NPPN122AFCN-RC be used as a direct replacement for A3C-24DA-2DSC(71)?

A: NPPN122AFCN-RC matches all critical electrical and mechanical parameters including pitch, row count, row spacing, termination, and contact finish. However, it is a header connector type rather than a receptacle. Direct substitution requires confirmation that the mating connector in your application is compatible with a header configuration. Mechanical footprint and pin orientation must be verified.

Q: What are the key differences between SMM-112-01-S-D and the original A3C-24DA-2DSC(71)?

A: Both are receptacle connectors with identical pitch, row configuration, and termination. SMM-112-01-S-D provides higher current capacity (3.2A vs. 1A), higher voltage rating (350VAC vs. 200VAC), and extended operating temperature range (-55°C to 125°C vs. -55°C to 85°C). Contact material and insulation material differ, but both maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity level.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original A3C-24DA-2DSC(71) is RoHS Compliant. Both substitute parts (NPPN122AFCN-RC and SMM-112-01-S-D) are ROHS3 Compliant, which represents an updated compliance standard.

Q: What is the impact of different insulation materials on connector performance?

A: The original part uses polybutylene terephthalate (PBT). NPPN122AFCN-RC uses polyamide (PA6T/Nylon 6T), and SMM-112-01-S-D uses liquid crystal polymer (LCP). All three materials maintain UL94 V-0 flammability rating. Material selection affects thermal performance, mechanical properties, and chemical resistance. Application-specific requirements should determine material suitability.

Q: Can I use SMM-112-01-S-D in applications requiring exactly 1A current rating?

A: Yes. SMM-112-01-S-D is rated for 3.2A per contact, which exceeds the 1A requirement. The connector can be used in 1A applications without derating concerns. Higher current capacity provides design margin and does not create compatibility issues in lower-current applications.

Q: What packaging format is used for all three connectors?

A: All three connectors are supplied in tube packaging, maintaining consistency in handling, storage, and component management across the supply chain.