DF1B-20DP-2.5DS Equivalent & Substitute Parts

Part Overview

The DF1B-20DP-2.5DS is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-cable/wire applications. This connector features 20 positions across 2 rows with 0.098" (2.50mm) pitch spacing and push-pull fastening. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

DF1B-20DP-2.5DS

Hirose Electric Co LtdIn Stock: 857DF1B-20DP-2.5DS Datasheet

Current PartRFQ

DF1BZ-20DP-2.5DS

Hirose Electric Co LtdIn Stock: 901DF1BZ-20DP-2.5DS Datasheet

DirectRFQ

DF1B-20DP-2.5DS(01)

Hirose Electric Co LtdIn Stock: 864DF1B-20DP-2.5DS(01) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF1B-20DP-2.5DS is determined by the following critical parameters:

• Connector Type: Header
• Number of Positions: 20
• Number of Rows: 2
• Pitch - Mating: 0.098" (2.50mm)
• Row Spacing - Mating: 0.098" (2.50mm)
• Mounting Type: Through Hole, Right Angle
• Shrouding: Shrouded - 4 Wall
• Contact Type: Male Pin
• Termination: Solder
• Fastening Type: Push-Pull
• Operating Temperature: -35°C ~ 85°C
• Material Flammability Rating: UL94 V-0
• Insulation Material: Polyamide (PA), Nylon

The identified substitute parts maintain these core electrical and mechanical parameters, ensuring mechanical and electrical compatibility in existing designs. Variations in contact finish, voltage rating, and product status are documented in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

Both DF1BZ-20DP-2.5DS and DF1B-20DP-2.5DS(01) are active product alternatives to the obsolete DF1B-20DP-2.5DS.

DF1B-20DP-2.5DS(01) is the manufacturer-recommended substitute. It maintains identical mechanical dimensions, contact geometry, and electrical specifications including the 250V voltage rating. The primary distinction is the gold contact finish on the mating surface, which provides enhanced corrosion resistance compared to the tin finish of the original part. This variant is RoHS Compliant and available in tray packaging.

DF1BZ-20DP-2.5DS is an alternative from the DF1B series with active product status. It maintains all mechanical and thermal specifications. The voltage rating is reduced to 150V, which represents a functional limitation for applications requiring the full 250V rating of the original part. This variant is ROHS3 Compliant and available in bulk packaging.

For new designs or ongoing production requiring the full electrical specifications of the original part, DF1B-20DP-2.5DS(01) is the appropriate selection. For applications with voltage requirements not exceeding 150V, DF1BZ-20DP-2.5DS provides an alternative with enhanced RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-20DP-2.5DS be used as a direct replacement for DF1B-20DP-2.5DS?

A: DF1BZ-20DP-2.5DS maintains mechanical and thermal compatibility. However, the voltage rating is 150V compared to 250V for the original part. Substitution is valid only for applications where the operating voltage does not exceed 150V.

Q: What is the difference between the contact finishes in DF1B-20DP-2.5DS(01)?

A: DF1B-20DP-2.5DS(01) features a gold contact finish on the mating surface (8.00µin / 0.203µm thickness) compared to the tin finish of the original part. Gold plating provides improved corrosion resistance and contact reliability in environments with higher humidity or corrosive exposure.

Q: Are there packaging differences between the substitute parts?

A: Yes. DF1BZ-20DP-2.5DS is supplied in bulk packaging, while DF1B-20DP-2.5DS(01) is supplied in tray packaging. Packaging selection should align with assembly process requirements and inventory management practices.

Q: What is the RoHS compliance status of each part?

A: The original DF1B-20DP-2.5DS is RoHS non-compliant. DF1BZ-20DP-2.5DS is ROHS3 Compliant. DF1B-20DP-2.5DS(01) is RoHS Compliant. For applications subject to RoHS regulations, either substitute part is acceptable.

Q: Are the mechanical dimensions identical across all three parts?

A: Yes. All three parts share identical mechanical specifications including pitch (0.098" / 2.50mm), row spacing (0.098" / 2.50mm), contact lengths, and insulation height (0.339" / 8.61mm). They are mechanically interchangeable in PCB layouts and mating connector designs.

Q: Which substitute should be selected for new production?

A: DF1B-20DP-2.5DS(01) is the manufacturer-recommended substitute and maintains all electrical specifications of the original part, including the 250V voltage rating. It is the appropriate choice for new designs unless specific application constraints favor DF1BZ-20DP-2.5DS.