DF1-4P-2.5DS(05) Equivalent & Substitute Parts

Part Overview

The DF1-4P-2.5DS(05) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-cable/wire applications. This 4-position connector operates at 250V with a 3A current rating and features a 0.098" (2.50mm) pitch. The part is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for existing applications.

Substiute Parts

DF1-4P-2.5DS(05)

Hirose Electric Co LtdIn Stock: 3988DF1-4P-2.5DS(05) Datasheet

Current PartRFQ

DF1B-4P-2.5DSA(01)

Hirose Electric Co LtdIn Stock: 992DF1B-4P-2.5DSA(01) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF1-4P-2.5DS(05) is determined by the following critical parameters:

• Connector Type & Series: Must be a header connector from the Hirose DF1 family
• Number of Positions: Must accommodate 4 positions
• Pitch - Mating: Must maintain 0.098" (2.50mm) pitch for mechanical compatibility
• Voltage & Current Ratings: Must meet or exceed 250V and 3A specifications
• Mounting Interface: Must support through-hole termination with solder connection
• Compliance: Must maintain ROHS3 compliance and UL94 V-0 flammability rating

The substitute part DF1B-4P-2.5DSA(01) qualifies as an equivalent based on these parameters. While it differs in mounting orientation (vertical vs. right-angle) and contact finish specifications, it maintains electrical compatibility through identical pitch, position count, voltage rating, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The DF1B-4P-2.5DSA(01) is an active product from Hirose Electric Co Ltd and represents a viable substitute for the discontinued DF1-4P-2.5DS(05). Both parts maintain identical electrical specifications (250V, 4-position, 2.50mm pitch) and comply with ROHS3 and UL94 V-0 standards.

The primary design consideration is the mounting orientation difference: the main part features right-angle mounting, while the substitute provides vertical mounting. This distinction requires PCB layout evaluation to determine compatibility with existing designs. The substitute offers an extended operating temperature range (-35°C vs. -30°C minimum), providing additional thermal margin in low-temperature applications.

Both parts utilize identical contact materials and mating lengths, ensuring electrical performance parity. The substitute's active product status provides supply chain continuity and long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can DF1B-4P-2.5DSA(01) directly replace DF1-4P-2.5DS(05) without PCB modification?

A: Direct replacement depends on PCB layout. The main difference is mounting orientation: DF1-4P-2.5DS(05) mounts at right angles to the board, while DF1B-4P-2.5DSA(01) mounts vertically. If the PCB footprint accommodates vertical mounting, substitution is feasible. Otherwise, PCB redesign is required.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both parts maintain 250V voltage rating, 4-position configuration, 0.098" (2.50mm) pitch, and identical contact materials and mating lengths. Electrical performance is equivalent.

Q: What is the significance of the contact finish difference?

A: The main part uses tin finish (39.4µin/1.00µm), while the substitute uses gold finish (8.00µin/0.203µm). Gold provides superior corrosion resistance and contact reliability in demanding environments. This represents an upgrade in contact durability.

Q: Does the substitute offer better compliance coverage?

A: Both parts are ROHS3 compliant and UL94 V-0 rated. The substitute's active product status ensures continued compliance certification and regulatory support, whereas the main part's Last Time Buy status indicates production discontinuation.

Q: What is the impact of the operating temperature range difference?

A: The substitute extends the minimum operating temperature to -35°C compared to -30°C for the main part. This provides additional thermal margin for applications operating in cold environments. The maximum temperature remains 85°C for both.