DF13-4P-1.25DSA Equivalent & Substitute Parts

Part Overview

The DF13-4P-1.25DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This 4-position connector operates at 1.25mm pitch with a 1A current rating and 150V voltage rating. The original part (DF13-4P-1.25DSA(76)) is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability.

Substiute Parts

DF13-4P-1.25DSA(76)

Hirose Electric Co LtdIn Stock: 829DF13-4P-1.25DSA(76) Datasheet

Current PartRFQ

DF13-4P-1.25DSA(55)

Hirose Electric Co LtdIn Stock: 1018DF13-4P-1.25DSA(55) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF13-4P-1.25DSA is determined by strict alignment of the following critical parameters:

• Connector type, contact type, and mating pitch (0.049" / 1.25mm)
• Position count (4) and row configuration (1 row)
• Mounting method (through hole) and termination type (solder)
• Electrical ratings: 1A current and 150V voltage minimum
• Operating temperature range (-35°C ~ 85°C)
• Flammability compliance (UL94 V-0)
• RoHS compliance status

The DF13-4P-1.25DSA(55) meets all substitution criteria as an active product variant within the same DF13 series, maintaining identical mechanical and electrical specifications while differing only in contact finish material on the post (tin vs. gold) and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The DF13-4P-1.25DSA(55) is the direct active substitute for the obsolete DF13-4P-1.25DSA(76). Both components maintain identical mechanical dimensions, electrical ratings, and compliance certifications. The primary distinction is product status: the (55) variant is currently in active production, ensuring supply chain continuity and long-term availability.

The contact finish difference on the post (tin vs. gold) does not affect functional compatibility in standard applications. Both finishes provide adequate corrosion resistance and solderability for through-hole assembly processes. The (55) variant's active status and higher inventory availability (982 pcs vs. 752 pcs) make it the preferred selection for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Are DF13-4P-1.25DSA(76) and DF13-4P-1.25DSA(55) mechanically interchangeable?

A: Yes. Both components share identical pitch (1.25mm), position count (4), mounting type (through hole), and physical dimensions including contact length (0.091"), insulation height (0.169"), and shrouding configuration.

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

A: The mating contact finish remains gold in both variants, ensuring consistent mating performance. The post contact finish difference (gold vs. tin) affects solderability characteristics during assembly but does not impact electrical performance or mechanical fit in standard PCB applications.

Q: Why is the (55) variant recommended over the (76)?

A: The DF13-4P-1.25DSA(55) is classified as active product status, indicating current manufacturing and availability. The (76) variant is obsolete, presenting supply chain risk. Both meet identical electrical and mechanical specifications.

Q: Are there any compliance or certification differences?

A: No. Both variants maintain UL94 V-0 flammability rating, RoHS compliance, and identical ECCN/HTSUS classifications.

Q: Can the DF13-4P-1.25DSA(55) be used in existing designs specified for the (76)?

A: Yes. The (55) variant is a direct functional equivalent with no design modifications required. PCB footprints, mating connector specifications, and electrical parameters remain unchanged.