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

Part Overview

The A4B-2PA-2DS(71) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-board or cable applications. This 2-position connector operates at 2A current rating and 200V voltage rating with a 2.00mm pitch. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and component procurement.

Substiute Parts

A4B-2PA-2DS(71)

Hirose Electric Co LtdIn Stock: 1004A4B-2PA-2DS(71) Datasheet

Current PartRFQ

A4B-2PA-2DS(51)

Hirose Electric Co LtdIn Stock: 1153A4B-2PA-2DS(51) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A4B-2PA-2DS(71) is determined by strict alignment of the following critical parameters:

• Manufacturer: Hirose Electric Co Ltd
• Series: A4
• Connector Type: Header
• Contact Type: Male Pin
• Pitch - Mating: 0.079" (2.00mm)
• Number of Positions: 2
• Number of Rows: 1
• Mounting Type: Through Hole, Right Angle
• Termination: Kinked Pin, Solder
• Contact Material: Brass
• Insulation Material: Polyamide (PA), Nylon
• Operating Temperature Range: -55°C ~ 85°C
• Material Flammability Rating: UL94 V-0

The substitute part A4B-2PA-2DS(51) maintains all critical mechanical and electrical parameters required for functional equivalence within the A4 series connector family.

Parameter Comparison

Engineering Selection Recommendations

The A4B-2PA-2DS(51) serves as the active production equivalent to the obsolete A4B-2PA-2DS(71). Both parts share identical mechanical form factor, pitch, mounting configuration, and thermal operating range. The substitute part carries RoHS compliance certification, meeting current regulatory requirements for electronic component procurement.

Current rating differs between the two parts: the original A4B-2PA-2DS(71) is rated at 2A, while the substitute A4B-2PA-2DS(51) is rated at 1A. Voltage rating specification also differs: the original specifies 200V while the substitute specifies 200VAC. These electrical parameter differences must be evaluated against application requirements before substitution.

Selection of A4B-2PA-2DS(51) is appropriate for applications where the 1A current rating and 200VAC voltage specification meet or exceed system requirements. For applications requiring the full 2A current capacity of the original part, alternative solutions within the A4 series or other connector families must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can A4B-2PA-2DS(51) directly replace A4B-2PA-2DS(71) in existing designs?

A: Mechanical and thermal compatibility is confirmed. Electrical parameter differences (current rating and voltage specification) require application-level evaluation. If your circuit operates at or below 1A and 200VAC, direct substitution is feasible. Higher current requirements necessitate alternative component selection.

Q: What is the significance of the part number suffix difference between (71) and (51)?

A: The suffix designates packaging and specification variants within the A4B-2PA base product family. Both variants maintain identical connector geometry and electrical interface characteristics.

Q: Is RoHS compliance a requirement for substitution?

A: RoHS compliance is a regulatory and procurement consideration. The substitute part A4B-2PA-2DS(51) carries RoHS Compliant certification, meeting current environmental and regulatory standards for component sourcing.

Q: What inventory status should influence my selection?

A: The original A4B-2PA-2DS(71) is obsolete with 925 units in stock. The substitute A4B-2PA-2DS(51) is active production with 1097 units available. For long-term supply chain stability, the active production part is preferred.

Q: Are there mechanical dimension differences between these parts?

A: Contact length, insulation height, and overall form factor are identical between both parts. Through-hole mounting configuration and right-angle orientation are preserved.