FX12B-40P-0.4SV(21) Equivalent & Substitute Parts

Part Overview

The FX12B-40P-0.4SV(21) is a 40-position rectangular connector plug manufactured by Hirose Electric Co Ltd. This part is classified as obsolete and is no longer in active production. Due to its obsolete status, locating original inventory becomes increasingly difficult. The FX12B-40P-0.4SV serves as the direct equivalent and active substitute for this discontinued model, maintaining identical electrical and mechanical specifications while offering current availability and production support.

Substiute Parts

FX12B-40P-0.4SV(21)

Hirose Electric Co LtdIn Stock: 1126FX12B-40P-0.4SV(21) Datasheet

Current PartRFQ

FX12B-40P-0.4SV

Hirose Electric Co LtdIn Stock: 2116FX12B-40P-0.4SV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The FX12B-40P-0.4SV is classified as a direct equivalent substitute based on the following critical parameters:

• Base Product Number Match: Both parts share the FX12B base designation
• Position Count: Identical 40-position configuration
• Pitch Specification: Matching 0.016" (0.40mm) pitch
• Row Configuration: Both feature 2-row arrangement
• Mounting Technology: Surface mount compatibility maintained
• Contact Material: Gold finish specification preserved
• Connector Type: Plug with center strip contacts

The substitution is valid because the FX12B-40P-0.4SV maintains all critical electrical and mechanical parameters that define the connector's form, fit, and function within the FX12 series.

Parameter Comparison

Engineering Selection Recommendations

The FX12B-40P-0.4SV is the appropriate selection for applications currently specified with the FX12B-40P-0.4SV(21). The active product status ensures ongoing manufacturing support, current inventory availability, and compliance with ROHS3 standards. The identical electrical and mechanical parameters guarantee direct compatibility in existing designs without modification to PCB layouts, mating connectors, or assembly processes.

For new designs or redesigns, the FX12B-40P-0.4SV should be specified to ensure long-term component availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can FX12B-40P-0.4SV directly replace FX12B-40P-0.4SV(21) without PCB modification?

A: Yes. Both parts maintain identical pitch (0.016"), position count (40), row configuration (2), and mounting type (surface mount). No PCB layout changes are required.

Q: What is the difference between FX12B-40P-0.4SV(21) and FX12B-40P-0.4SV?

A: The primary difference is product status. FX12B-40P-0.4SV(21) is obsolete, while FX12B-40P-0.4SV is active production. All electrical and mechanical specifications are identical.

Q: Is FX12B-40P-0.4SV ROHS3 compliant?

A: Yes. The active FX12B-40P-0.4SV is ROHS3 compliant, whereas the obsolete variant does not specify compliance status.

Q: What is the moisture sensitivity level for FX12B-40P-0.4SV?

A: MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there packaging differences between these parts?

A: The active FX12B-40P-0.4SV is supplied in Tape & Reel (TR) packaging. Original packaging specifications for the obsolete variant are not provided.