DF9B-31P-1V(20) Equivalent & Substitute Parts

Part Overview

The DF9B-31P-1V(20) is a 31-position connector header manufactured by Hirose Electric Co Ltd, designed for surface mount applications with center strip contacts and tin plating. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement planning. The substitute part maintains identical electrical and mechanical specifications while offering improved product status and compliance characteristics.

Substiute Parts

DF9B-31P-1V(20)

Hirose Electric Co LtdIn Stock: 931DF9B-31P-1V(20) Datasheet

Current PartRFQ

DF9B-31P-1V(32)

Hirose Electric Co LtdIn Stock: 3311DF9B-31P-1V(32) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF9B-31P-1V(20) with the DF9B-31P-1V(32) is based on strict equivalence of the following critical parameters:

• Number of positions: 31 (identical)
• Pitch: 0.039" (1.00mm) (identical)
• Number of rows: 2 (identical)
• Connector type: Header, Center Strip Contacts (identical)
• Mounting type: Surface Mount (identical)
• Contact finish: Tin (identical)
• Mated stacking height: 4.3mm (identical)
• Height above board: 0.130" (3.30mm) (identical)
• Features: Solder Retention (identical)
• Series: DF9 (identical)

The primary distinction between these parts is packaging format and product status. The DF9B-31P-1V(32) is supplied in Tape & Reel format and maintains Active product status, whereas the DF9B-31P-1V(20) is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The DF9B-31P-1V(32) is the direct functional equivalent for the obsolete DF9B-31P-1V(20). Selection of the substitute part is supported by:

• Identical electrical and mechanical specifications across all critical connector parameters
• Active product status ensuring continued availability and supply chain stability
• ROHS3 compliance, providing regulatory advantage over the non-compliant original part
• Tape & Reel packaging format suitable for automated assembly processes
• Specified contact finish thickness of 39.4µin (1.00µm), providing documented plating specification

Both parts share identical REACH and ECCN classifications, confirming regulatory equivalence for export and environmental compliance purposes.

Frequently Asked Questions (FAQ)

Q: Are the DF9B-31P-1V(20) and DF9B-31P-1V(32) electrically interchangeable?

A: Yes. Both parts are 31-position headers with identical pitch (1.00mm), row configuration, contact finish, and stacking heights. They are electrically and mechanically interchangeable at the connector interface level.

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

A: The DF9B-31P-1V(20) uses unspecified packaging, while the DF9B-31P-1V(32) is supplied in Tape & Reel format. Tape & Reel packaging is standard for high-volume surface mount assembly and enables automated component placement. This difference does not affect connector performance but impacts procurement and assembly workflow.

Q: Why is RoHS compliance important for this substitution?

A: The DF9B-31P-1V(32) is ROHS3 compliant, whereas the original part is non-compliant. ROHS3 compliance is required for products sold in the European Union and is increasingly mandated by OEMs globally. Selecting the compliant substitute ensures regulatory alignment for current and future applications.

Q: Can the DF9B-31P-1V(32) be used as a direct replacement in existing designs?

A: Yes. The substitute part maintains identical form factor, pin configuration, and electrical characteristics. No PCB redesign or connector interface modification is required. The part can be substituted directly in assembly processes.

Q: What does the contact finish thickness specification indicate?

A: The DF9B-31P-1V(32) specifies a tin plating thickness of 39.4µin (1.00µm). This documented specification ensures consistent contact resistance and corrosion resistance performance. The original part does not provide this specification detail.