FX8C-120S-SV5(21) Equivalent & Substitute Parts

Part Overview

The FX8C-120S-SV5(21) is a 120-position rectangular connector receptacle manufactured by Hirose Electric Co Ltd, featuring center strip contacts with surface mount gold plating. This connector is part of the FunctionMax™ FX8C series and is designed for high-density interconnect applications requiring board-guided surface mount assembly.

The FX8C-120S-SV5(21) carries an obsolete product status. Locating equivalent or substitute components is necessary to support legacy system maintenance, repair, and continued production of equipment utilizing this connector specification.

Substiute Parts

FX8C-120S-SV5(21)

Hirose Electric Co LtdIn Stock: 813FX8C-120S-SV5(21) Datasheet

Current PartRFQ

FX8C-120S-SV5(91)

Hirose Electric Co LtdIn Stock: 2668FX8C-120S-SV5(91) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FX8C-120S-SV5(21) is determined by strict equivalence across the following critical parameters:

• Connector Type & Configuration: Receptacle with center strip contacts
• Position Count & Pitch: 120 positions at 0.024" (0.60mm) pitch
• Row Configuration: 2-row arrangement
• Mounting Technology: Surface mount with board guide
• Contact Material & Finish: Gold plating
• Physical Dimensions: Height above board of 0.352" (8.95mm) and compatible mated stacking heights (10mm, 11mm, 12mm, 14mm, 16mm)
• Manufacturer: Hirose Electric Co Ltd FunctionMax™ FX8C series

The FX8C-120S-SV5(91) meets all these criteria and qualifies as a direct substitute based on identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The FX8C-120S-SV5(91) is the direct functional equivalent to the obsolete FX8C-120S-SV5(21). Both components share identical electrical and mechanical specifications, ensuring pin-for-pin and footprint compatibility.

Product Status Consideration: The FX8C-120S-SV5(91) carries active product status with current manufacturing availability (2592 units in stock), whereas the FX8C-120S-SV5(21) is obsolete. Selection of the active part number ensures long-term supply chain continuity.

Compliance Difference: The FX8C-120S-SV5(91) is ROHS3 compliant, while the FX8C-120S-SV5(21) is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the FX8C-120S-SV5(91).

Packaging: The FX8C-120S-SV5(91) is supplied in tube packaging, differing from the unspecified packaging of the obsolete variant. Tube packaging is standard for surface mount connectors and presents no compatibility issues for assembly operations.

Frequently Asked Questions (FAQ)

Q: Are the FX8C-120S-SV5(21) and FX8C-120S-SV5(91) electrically interchangeable?

A: Yes. Both connectors feature identical position counts (120), pitch (0.024"), row configuration (2), contact finish (gold), and mounting specifications. They are electrically and mechanically equivalent.

Q: What is the difference between the (21) and (91) designations?

A: The suffix designations indicate packaging and compliance variants within the same base connector series. The (91) variant includes ROHS3 compliance and tube packaging, while the (21) variant is RoHS non-compliant with unspecified packaging.

Q: Can I use the FX8C-120S-SV5(91) as a direct replacement in existing designs?

A: Yes. The FX8C-120S-SV5(91) maintains identical footprint, pin assignment, and electrical characteristics. No design modifications are required for substitution.

Q: Why is the FX8C-120S-SV5(21) marked as obsolete?

A: Obsolescence typically reflects manufacturer discontinuation of a specific variant. The active FX8C-120S-SV5(91) variant remains in production and is the recommended selection for new and legacy applications.

Q: Are there any compliance implications when switching from FX8C-120S-SV5(21) to FX8C-120S-SV5(91)?

A: The FX8C-120S-SV5(91) is ROHS3 compliant, making it suitable for applications with RoHS regulatory requirements. The obsolete FX8C-120S-SV5(21) is RoHS non-compliant. Applications requiring RoHS compliance must use the (91) variant.