FX10B-120P/12-SV(21) Equivalent & Substitute Parts

Part Overview

The FX10B-120P/12-SV(21) is a 120-position rectangular connector header manufactured by Hirose Electric Co Ltd, part of the FunctionMax™ FX10 series. This surface mount connector features outer shroud contacts with gold plating and is designed for high-density interconnect applications requiring reliable signal and power distribution.

The FX10B-120P/12-SV(21) carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance and production requirements.

Substiute Parts

FX10B-120P/12-SV(21)

Hirose Electric Co LtdIn Stock: 888FX10B-120P/12-SV(21) Datasheet

Current PartRFQ

FX10B-120P/12-SV(91)

Hirose Electric Co LtdIn Stock: 672FX10B-120P/12-SV(91) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FX10B-120P/12-SV(21) is determined by strict equivalence across the following critical parameters:

• Connector Type & Series: Header, Outer Shroud Contacts within the FunctionMax™ FX10 series
• Position Count & Pitch: 120 positions at 0.020" (0.50mm) pitch
• Row Configuration: 2-row arrangement
• Mounting Technology: Surface Mount (SMD)
• Contact Specifications: Gold finish at 4.00µin (0.100µm) thickness
• Physical Dimensions: Height above board of 0.138" (3.50mm) and mated stacking height of 4mm
• Functional Features: Ground Plate and Solder Retention

The substitute part FX10B-120P/12-SV(91) maintains identical electrical and mechanical specifications across all these parameters, differing only in packaging format and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The FX10B-120P/12-SV(91) is the direct functional equivalent to the FX10B-120P/12-SV(21). Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and footprint compatibility.

Product Status Consideration: The FX10B-120P/12-SV(21) is classified as obsolete, while the FX10B-120P/12-SV(91) maintains active product status. For new designs and ongoing production, the FX10B-120P/12-SV(91) is the appropriate selection to ensure long-term supply availability and manufacturer support.

Compliance Consideration: The FX10B-120P/12-SV(91) is RoHS compliant, whereas the FX10B-120P/12-SV(21) is RoHS non-compliant. Applications subject to RoHS regulations or requiring compliance documentation must use the FX10B-120P/12-SV(91).

Packaging Consideration: The FX10B-120P/12-SV(91) is supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount assembly operations. The original part number does not specify alternative packaging formats.

Frequently Asked Questions (FAQ)

Q: Are the FX10B-120P/12-SV(21) and FX10B-120P/12-SV(91) electrically interchangeable?

A: Yes. Both parts are identical in electrical specifications, including contact finish, contact finish thickness, and all signal-carrying characteristics. They are direct electrical equivalents.

Q: Are the FX10B-120P/12-SV(21) and FX10B-120P/12-SV(91) mechanically interchangeable?

A: Yes. Both parts share identical mechanical specifications: 120 positions, 0.020" (0.50mm) pitch, 2-row configuration, surface mount mounting type, and identical height dimensions (0.138" above board, 4mm mated stacking height). They are footprint-compatible and require no PCB redesign.

Q: Why does the FX10B-120P/12-SV(21) show as obsolete?

A: The FX10B-120P/12-SV(21) is classified as obsolete by the manufacturer. The FX10B-120P/12-SV(91) represents the current active equivalent, ensuring access to ongoing manufacturer support and supply chain continuity.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (obsolete vs. active), RoHS compliance status (non-compliant vs. compliant), and packaging format (standard vs. Tape & Reel). All electrical and mechanical specifications are identical.

Q: Can I use the FX10B-120P/12-SV(91) in place of the FX10B-120P/12-SV(21) in existing designs?

A: Yes. The FX10B-120P/12-SV(91) is a direct substitute with no design modifications required. It is recommended for both legacy system maintenance and new production runs.

Q: Does the Tape & Reel packaging of the FX10B-120P/12-SV(91) affect compatibility?

A: No. Tape & Reel packaging is a supply format used for automated assembly operations. It does not affect the component's electrical or mechanical performance. The connector itself is identical regardless of packaging format.

Q: Are there any compliance considerations when switching from FX10B-120P/12-SV(21) to FX10B-120P/12-SV(91)?

A: The FX10B-120P/12-SV(91) is RoHS compliant, while the FX10B-120P/12-SV(21) is not. If your application or market requires RoHS compliance, the FX10B-120P/12-SV(91) is the required choice.