Equivalent & Substitute Parts for A4B-2PA-2DSA(71)

Part Overview

The A4B-2PA-2DSA(71) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-board or cable applications. This connector features a 2-position, single-row configuration with 2.00mm pitch and is rated for 2A at 200V operation across a temperature range of -55°C to 85°C. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

A4B-2PA-2DSA(71)

Hirose Electric Co LtdIn Stock: 1206A4B-2PA-2DSA(71) Datasheet

Current PartRFQ

A4B-2PA-2DSA(51)

Hirose Electric Co LtdIn Stock: 922A4B-2PA-2DSA(51) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The A4B-2PA-2DSA(51) qualifies as a direct substitute based on the following critical parameters that determine functional compatibility:

• Identical manufacturer (Hirose Electric Co Ltd) and series (A4)
• Matching connector type (Header), contact type (Male Pin), and number of positions (2)
• Identical mating pitch (0.079" / 2.00mm)
• Identical mounting type (Through Hole) and termination method (Solder)
• Matching operating temperature range (-55°C ~ 85°C)
• Identical material flammability rating (UL94 V-0)
• Identical contact geometry and insulation specifications

The primary distinction is product status: A4B-2PA-2DSA(71) is obsolete, while A4B-2PA-2DSA(51) is active. Additionally, the substitute part carries RoHS Compliance certification and differs in current rating specification (1A versus 2A).

Parameter Comparison

Engineering Selection Recommendations

The A4B-2PA-2DSA(51) is the active equivalent for the obsolete A4B-2PA-2DSA(71). Both parts share identical mechanical and electrical specifications across all critical connector parameters, including pitch, contact geometry, mounting configuration, and operating temperature range.

The substitute part carries RoHS Compliance certification, which may be required for applications subject to environmental regulations. The current rating differs between the two parts (2A for the main part versus 1A for the substitute); applications requiring the full 2A capacity must evaluate whether the reduced rating of the substitute is acceptable for the intended circuit design.

Both parts are classified as Moisture Sensitivity Level 1 (Unlimited) and carry UL94 V-0 flammability ratings, indicating equivalent environmental performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can A4B-2PA-2DSA(51) be used as a direct replacement for A4B-2PA-2DSA(71)?

A: Yes, the parts are mechanically and electrically compatible across all connector interface parameters. Both feature identical 2-position, 2.00mm pitch headers with matching contact geometry, mounting type, and operating temperature specifications. The primary consideration is the current rating difference (1A versus 2A).

Q: What is the significance of the current rating difference between these parts?

A: The main part A4B-2PA-2DSA(71) is rated for 2A, while the substitute A4B-2PA-2DSA(51) is rated for 1A. Applications operating at currents exceeding 1A must verify that the substitute part's reduced rating is compatible with circuit requirements.

Q: Does the RoHS Compliance status of A4B-2PA-2DSA(51) affect compatibility?

A: RoHS Compliance is an environmental and regulatory attribute that does not affect electrical or mechanical compatibility. The substitute part's RoHS status may be advantageous for applications subject to environmental regulations or customer requirements.

Q: Are the contact finishes identical between these parts?

A: Both parts feature gold-plated mating contacts and tin-plated posts. Contact finish specifications are equivalent across both parts.

Q: What is the packaging difference between these parts?

A: A4B-2PA-2DSA(71) packaging is not specified in available data. A4B-2PA-2DSA(51) is supplied in bulk packaging. Packaging format does not affect connector performance or compatibility.