DF57-4P-1.2V(21) Equivalent & Substitute Parts

Part Overview

The DF57-4P-1.2V(21) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for surface mount applications with 4 positions at 1.20mm pitch. This component features male blade contacts, solder termination, and swing lock fastening, suitable for board-to-cable/wire connections. The part is currently listed as obsolete, making identification of compatible substitutes essential for ongoing design support and production continuity.

Substiute Parts

DF57-4P-1.2V(21)

Hirose Electric Co LtdIn Stock: 3469DF57-4P-1.2V(21) Datasheet

Current PartRFQ

DF57H-4P-1.2V(21)

Hirose Electric Co., Ltd.In Stock: 3371DF57H-4P-1.2V(21) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DF57-4P-1.2V(21) is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Header with male blade contacts
• Position Count & Pitch: 4 positions at 0.047" (1.20mm) mating pitch
• Mounting & Termination: Surface mount with solder termination
• Fastening Mechanism: Swing lock fastening type
• Physical Dimensions: Insulation height of 0.055" (1.40mm)
• Material Specifications: Brass contacts with tin finish; Liquid Crystal Polymer insulation
• Environmental Ratings: Operating temperature range -35°C ~ 85°C; UL94 V-0 flammability rating
• Moisture Sensitivity: MSL 1 (Unlimited)

The substitute part DF57H-4P-1.2V(21) meets all these criteria while offering active product status and enhanced compliance documentation.

Parameter Comparison

Engineering Selection Recommendations

The DF57H-4P-1.2V(21) is the direct functional equivalent for the obsolete DF57-4P-1.2V(21). Both parts share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the DF57H-4P-1.2V(21) maintains active production status with documented RoHS3 compliance and REACH unaffected status, providing assurance of continued availability and regulatory alignment. For new designs or production continuity, the DF57H-4P-1.2V(21) is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can DF57H-4P-1.2V(21) be used as a direct replacement for DF57-4P-1.2V(21)?

A: Yes. Both parts are functionally equivalent across all electrical and mechanical parameters, including connector type, position count, pitch, contact configuration, mounting method, termination type, and environmental ratings. The DF57H variant is the active production equivalent.

Q: What is the difference between the DF57 and DF57H series?

A: The DF57H series represents the current production line for this connector family. The DF57-4P-1.2V(21) is obsolete, while DF57H-4P-1.2V(21) is actively manufactured. Both maintain identical specifications for the 4-position 1.20mm pitch header configuration.

Q: Are there packaging differences between these parts?

A: The DF57-4P-1.2V(21) packaging is not specified in available documentation. The DF57H-4P-1.2V(21) is supplied in Cut Tape (CT) packaging. Verify packaging requirements for your assembly process.

Q: Does the DF57H-4P-1.2V(21) meet current compliance standards?

A: Yes. The DF57H-4P-1.2V(21) is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most markets.

Q: Are the contact finish specifications identical?

A: Yes. Both parts feature tin-plated brass contacts with identical finish specifications on mating and post surfaces, ensuring equivalent electrical performance and solderability.