DF1B-18P-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-18P-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting with 18 positions at 2.5mm pitch. This connector features a shrouded 4-wall design with push-pull fastening and solder termination for board-to-cable/wire applications. The part is currently listed as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

DF1B-18P-2.5DSA

Hirose Electric Co LtdIn Stock: 1150DF1B-18P-2.5DSA Datasheet

Current PartRFQ

DF1BZ-18P-2.5DSA

Hirose Electric Co LtdIn Stock: 1109DF1BZ-18P-2.5DSA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF1B-18P-2.5DSA is determined by strict equivalence across the following critical parameters:

• Connector type (Header)
• Number of positions (18)
• Mating pitch (0.098" / 2.50mm)
• Contact type (Male Pin)
• Mounting method (Through Hole)
• Shrouding configuration (Shrouded - 4 Wall)
• Fastening mechanism (Push-Pull)
• Voltage rating (250V)
• Operating temperature range (-35°C ~ 85°C)
• Insulation material (Polyamide/Nylon)
• Contact material (Brass)

The DF1BZ-18P-2.5DSA qualifies as a direct substitute based on complete alignment with all critical electrical and mechanical parameters. The primary distinction is product status: the substitute part is active and RoHS compliant, whereas the original part is obsolete and RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

The DF1BZ-18P-2.5DSA is the direct equivalent for the obsolete DF1B-18P-2.5DSA. Selection of the substitute part is based on the following factors:

• The substitute maintains complete electrical and mechanical compatibility with the original part across all critical parameters.
• The substitute part is currently active in production, ensuring reliable availability for new designs and field replacements.
• The substitute part is RoHS compliant, meeting current regulatory requirements for electronic components in most jurisdictions.
• Both parts share identical contact geometry, pitch, voltage rating, and operating temperature specifications, ensuring drop-in compatibility in existing PCB designs.

For applications requiring the original obsolete part number, the DF1BZ-18P-2.5DSA provides full functional equivalence without design modification.

Frequently Asked Questions (FAQ)

Q: Can the DF1BZ-18P-2.5DSA be used as a direct replacement for the DF1B-18P-2.5DSA?

A: Yes. The DF1BZ-18P-2.5DSA is a direct substitute. Both parts share identical connector type, position count, mating pitch, contact configuration, mounting method, shrouding, fastening type, voltage rating, and operating temperature range. No PCB or assembly modifications are required.

Q: What is the primary difference between these two parts?

A: The DF1B-18P-2.5DSA is obsolete and RoHS non-compliant. The DF1BZ-18P-2.5DSA is an active production part that is RoHS compliant. All electrical and mechanical specifications are identical.

Q: Are the contact dimensions identical between the two parts?

A: Yes. Both parts have identical contact length specifications: 0.177" (4.50mm) mating length, 0.142" (3.60mm) post length, and 0.417" (10.60mm) overall contact length. Insulation height is 0.374" (9.50mm) for both parts.

Q: Does the packaging differ between these parts?

A: The original part has unspecified packaging, while the substitute is supplied in bulk packaging. This does not affect electrical or mechanical compatibility.

Q: Are both parts rated for the same voltage and temperature range?

A: Yes. Both parts are rated for 250V and operate across the temperature range of -35°C to 85°C. Both carry UL94 V-0 flammability rating.