A3-28DA-2SV(71) Equivalent & Substitute Parts

Part Overview

The A3-28DA-2SV(71) is a 28-position receptacle connector manufactured by Hirose Electric Co Ltd, designed for board-to-board or cable applications with surface mount termination. This connector features a 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The product is active and in stock with 690 units available. Alternative models may be required due to inventory constraints, specific application requirements, or design revisions that necessitate compatible connector options.

Substiute Parts

A3-28DA-2SV(71)

Hirose Electric Co LtdIn Stock: 798A3-28DA-2SV(71) Datasheet

Current PartRFQ

SMM-114-02-S-D-K-TR

Samtec Inc.In Stock: 1322SMM-114-02-S-D-K-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3-28DA-2SV(71) is determined by strict alignment with the following critical parameters:

• Connector Type & Position Count: Must be a 28-position receptacle
• Pitch & Row Configuration: Mating pitch of 0.079" (2.00mm) with 2-row layout and 0.079" row spacing
• Mounting & Termination: Surface mount with solder termination
• Fastening Mechanism: Push-pull fastening type
• Contact Finish: Gold-plated mating contacts
• Electrical Performance: Voltage and current ratings must meet or exceed application requirements
• Compliance: RoHS3 compliance required

The SMM-114-02-S-D-K-TR from Samtec Inc. meets these core substitution criteria across all mechanical and electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the A3-28DA-2SV(71) and SMM-114-02-S-D-K-TR are active products with ROHS3 compliance and UL94 V-0 flammability ratings. The Samtec SMM-114-02-S-D-K-TR substitute provides enhanced electrical performance with higher voltage (350VAC vs. 200VAC) and current (3.2A per contact vs. 1A) ratings, along with an extended operating temperature range (-55°C ~ 125°C vs. -55°C ~ 85°C). Both connectors maintain identical mechanical compatibility with 28 positions, 0.079" pitch, 2-row configuration, and push-pull fastening. Selection between these parts should be based on specific application voltage and current requirements, operating temperature conditions, and inventory availability. The Samtec part offers greater design margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the SMM-114-02-S-D-K-TR be used as a direct replacement for the A3-28DA-2SV(71)?

A: Yes, the SMM-114-02-S-D-K-TR is mechanically and electrically compatible as a substitute. Both connectors share identical pitch (0.079"), position count (28), row configuration (2 rows), mounting type (surface mount), termination method (solder), and fastening mechanism (push-pull). The Samtec part meets or exceeds all electrical specifications of the Hirose connector.

Q: What are the key differences between these two connectors?

A: The primary differences are: (1) Contact finish thickness - the Samtec part has thicker gold plating (30.0µin vs. 8.00µin); (2) Electrical ratings - Samtec provides higher voltage (350VAC vs. 200VAC) and current (3.2A vs. 1A) capacity; (3) Operating temperature range - Samtec extends to 125°C vs. 85°C maximum; (4) Insulation material - Hirose uses PPS while Samtec uses LCP; (5) Packaging - Hirose ships in tubes while Samtec uses tape and reel format.

Q: Are both connectors RoHS compliant?

A: Yes, both the A3-28DA-2SV(71) and SMM-114-02-S-D-K-TR are ROHS3 compliant with UL94 V-0 flammability ratings and MSL 1 (unlimited) moisture sensitivity levels.

Q: What packaging formats are available?

A: The A3-28DA-2SV(71) is supplied in tube packaging, while the SMM-114-02-S-D-K-TR is supplied in tape and reel (TR) format. Tape and reel packaging is optimized for automated assembly processes.

Q: Which connector should I select for high-temperature applications?

A: The SMM-114-02-S-D-K-TR supports operating temperatures up to 125°C, compared to 85°C for the A3-28DA-2SV(71). For applications exceeding 85°C, the Samtec connector is the appropriate choice.