DF57B-2P-2.4V(21) Equivalent & Substitute Parts

Part Overview

The DF57B-2P-2.4V(21) is a surface mount rectangular connector header manufactured by Hirose Electric Co Ltd, designed for board-to-cable/wire applications with 2 positions at 0.094" (2.40mm) pitch. This connector features male blade contacts, solder termination, and swing lock fastening. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and component procurement.

Substiute Parts

DF57B-2P-2.4V(21)

Hirose Electric Co LtdIn Stock: 1183DF57B-2P-2.4V(21) Datasheet

Current PartRFQ

DF57H-2P-2.4V(21)

Hirose Electric Co LtdIn Stock: 876DF57H-2P-2.4V(21) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DF57H-2P-2.4V(21) qualifies as a direct substitute for the DF57B-2P-2.4V(21) based on the following critical parameters:

• Connector Type & Configuration: Both are 2-position header connectors with identical male blade contact type
• Pitch Specification: Both maintain 0.094" (2.40mm) mating pitch
• Mounting & Termination: Both are surface mount with solder termination and swing lock fastening
• Physical Dimensions: Insulation height of 0.055" (1.40mm) is identical
• Material Composition: Both use brass contacts and Liquid Crystal Polymer (LCP) insulation
• Environmental Ratings: Both operate across -35°C ~ 85°C temperature range with UL94 V-0 flammability rating
• Moisture Sensitivity: Both rated MSL 1 (Unlimited)

The primary distinction is product status: DF57H-2P-2.4V(21) is active production, while DF57B-2P-2.4V(21) is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The DF57H-2P-2.4V(21) is the appropriate substitute for the obsolete DF57B-2P-2.4V(21). Selection is based on:

• Product Continuity: DF57H-2P-2.4V(21) maintains active production status, ensuring long-term availability and supply chain stability
• Electrical & Mechanical Compatibility: All critical parameters—pitch, contact configuration, termination method, and fastening mechanism—are identical
• Environmental & Compliance Alignment: Both parts meet identical operating temperature ranges, flammability standards (UL94 V-0), and moisture sensitivity classifications
• RoHS Compliance: DF57H-2P-2.4V(21) is explicitly RoHS compliant, providing regulatory advantage for new designs and procurement cycles
• Packaging Flexibility: DF57H-2P-2.4V(21) is available in Tape & Reel format, supporting automated assembly processes

Frequently Asked Questions (FAQ)

Q: Can DF57H-2P-2.4V(21) be used as a direct replacement for DF57B-2P-2.4V(21)?

A: Yes. Both connectors share identical electrical and mechanical specifications including 2-position configuration, 0.094" (2.40mm) pitch, male blade contacts, surface mount solder termination, and swing lock fastening. Physical dimensions and material properties are equivalent.

Q: What is the primary difference between these two part numbers?

A: The DF57B-2P-2.4V(21) is obsolete, while DF57H-2P-2.4V(21) is in active production. Additionally, DF57H-2P-2.4V(21) is RoHS compliant and available in Tape & Reel packaging, whereas DF57B-2P-2.4V(21) was supplied in bulk packaging.

Q: Are there any compatibility concerns when substituting DF57H-2P-2.4V(21) for DF57B-2P-2.4V(21)?

A: No compatibility concerns exist. The connectors are mechanically and electrically interchangeable. PCB footprints, mating interfaces, and electrical performance remain unchanged.

Q: Does DF57H-2P-2.4V(21) meet the same environmental specifications?

A: Yes. Both parts operate across -35°C ~ 85°C, maintain UL94 V-0 flammability rating, and are rated MSL 1 (Unlimited moisture sensitivity level).

Q: What packaging options are available for DF57H-2P-2.4V(21)?

A: DF57H-2P-2.4V(21) is supplied in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. This differs from the bulk packaging of the obsolete DF57B variant.