DF1-2P-2.5DSA(05) Equivalent & Substitute Parts

Part Overview

The DF1-2P-2.5DSA(05) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This vertical 2-position connector operates at 2.5mm pitch and is rated for 3A at 250V. The part carries Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components ensures design continuity and supply chain reliability for applications currently utilizing this connector.

Substiute Parts

DF1-2P-2.5DSA(05)

Hirose Electric Co LtdIn Stock: 1243DF1-2P-2.5DSA(05) Datasheet

Current PartRFQ

DF1B-2P-2.5DSA(01)

Hirose Electric Co., Ltd.In Stock: 1390DF1B-2P-2.5DSA(01) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF1-2P-2.5DSA(05) is determined by the following critical parameters:

• Connector Type & Contact Configuration: Must be a header with male pin contacts
• Position Count & Pitch: Must maintain 2 positions at 0.098" (2.50mm) mating pitch
• Mounting & Termination: Must support through-hole solder termination
• Electrical Ratings: Must meet or exceed 250V voltage rating and 3A current capacity
• Physical Compatibility: Contact length, insulation height, and overall dimensions must accommodate existing PCB footprints and mating connectors
• Compliance: Must maintain RoHS3 and REACH compliance status

The DF1B-2P-2.5DSA(01) qualifies as a direct substitute based on these parameters, with documented differences in shrouding design, fastening mechanism, and contact finish specifications.

Parameter Comparison

Engineering Selection Recommendations

The DF1B-2P-2.5DSA(01) is the qualified substitute for the DF1-2P-2.5DSA(05). Selection between these parts is determined by product lifecycle and supply availability:

DF1-2P-2.5DSA(05): Last Time Buy status indicates this part is no longer in active production. Existing inventory of 1197 pieces is available for immediate use in current designs or legacy system support.

DF1B-2P-2.5DSA(01): Active product status with 1280 pieces in stock. This part is recommended for new designs and ongoing production requirements. The DF1B series offers enhanced shrouding (4-wall design versus 1-wall), improved fastening (push-pull versus friction lock), and extended temperature range (-35°C minimum versus -30°C). Gold contact finish provides superior corrosion resistance compared to tin finish.

Both parts maintain identical electrical ratings (250V, 2-position, 2.5mm pitch), through-hole solder termination, and full RoHS3/REACH compliance. Physical differences in insulation height (0.295" versus 0.374") and contact post length (0.118" versus 0.142") require PCB footprint verification before substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can DF1B-2P-2.5DSA(01) directly replace DF1-2P-2.5DSA(05) in existing PCB designs?

A: Electrical compatibility is confirmed. Physical compatibility requires verification. The DF1B variant has greater insulation height (0.374" versus 0.295") and longer contact posts (0.142" versus 0.118"). Existing PCB footprints must accommodate these dimensional differences. Mating connector compatibility should be confirmed with the cable/wire connector specifications.

Q: What are the key differences between these two parts?

A: Primary differences include shrouding design (1-wall versus 4-wall), fastening mechanism (friction lock versus push-pull), contact finish (tin versus gold), and operating temperature range (-30°C to -35°C minimum). Electrical ratings and pitch specifications are identical.

Q: Why is the DF1-2P-2.5DSA(05) marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued active production. Existing inventory remains available for purchase, but no future production runs are planned. The DF1B series represents the active product line replacement.

Q: Are both parts RoHS3 and REACH compliant?

A: Yes. Both DF1-2P-2.5DSA(05) and DF1B-2P-2.5DSA(01) are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the contact finish difference (tin versus gold)?

A: Gold finish provides enhanced corrosion resistance and improved contact reliability in high-humidity or corrosive environments. Tin finish is suitable for standard industrial applications. Selection depends on application environment and reliability requirements.

Q: Do these connectors require any special handling or storage?

A: Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control measures are required during storage or handling.