DF1EC-4P-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1EC-4P-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This shrouded 4-position connector operates at 2.5mm pitch and is rated for 3A current with an operating temperature range of -35°C to 85°C. The main part number DF1EC-4P-2.5DSA(01) is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	4
Pitch - Mating	0.098" (2.50mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Termination	Solder
Current Rating	3A
Operating Temperature	-35°C ~ 85°C
Contact Finish - Mating	Gold
Insulation Material	Polyamide (PA), Nylon
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the DF1EC-4P-2.5DSA is determined by strict equivalence across the following critical parameters:

Connector type (Header)
Contact type (Male Pin)
Number of positions (4)
Mating pitch (2.5mm)
Mounting method (Through Hole)
Shrouding configuration (Shrouded - 4 Wall)
Termination method (Solder)
Current rating (3A)
Operating temperature range (-35°C ~ 85°C)
Contact finish (Gold)
Insulation material (Polyamide/Nylon)
Flammability rating (UL94 V-0)

The substitute part DF1EC-4P-2.5DSA(36) maintains identical electrical and mechanical specifications across all these parameters, differing only in packaging format and product status.

Parameter Comparison

Parameter	DF1EC-4P-2.5DSA(01)	DF1EC-4P-2.5DSA(36)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	DF1E	DF1E
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	4	4
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)
Number of Rows	1	1
Style	Board to Cable/Wire	Board to Cable/Wire
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Latch Holder	Latch Holder
Contact Length - Mating	0.177" (4.50mm)	0.177" (4.50mm)
Contact Length - Post	0.142" (3.60mm)	0.142" (3.60mm)
Insulation Height	0.425" (10.80mm)	0.425" (10.80mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	8.00µin (0.203µm)	8.00µin (0.203µm)
Contact Material	Brass	Brass
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Natural	Natural
Current Rating (Amps)	3A	3A
Mated Stacking Heights	14.3mm, 15.8mm, 19.8mm	14.3mm, 15.8mm, 19.8mm
Base Product Number	DF1EC	DF1EC
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040
Product Status	Obsolete	Active
Packaging	-	Bulk
RoHS Status	Not specified	RoHS Compliant

Engineering Selection Recommendations

The DF1EC-4P-2.5DSA(36) is the direct functional equivalent of DF1EC-4P-2.5DSA(01). Both parts share identical electrical and mechanical specifications, including connector type, contact configuration, pitch, current rating, operating temperature range, and material certifications.

The primary distinction is product status: DF1EC-4P-2.5DSA(01) is obsolete, while DF1EC-4P-2.5DSA(36) is active and currently in production. The substitute part is supplied in bulk packaging and carries RoHS compliance certification, providing additional regulatory alignment for modern manufacturing environments.

For new designs or production requiring this connector type, DF1EC-4P-2.5DSA(36) is the appropriate selection. For legacy system repairs or maintenance requiring exact part matching, DF1EC-4P-2.5DSA(36) provides full functional compatibility.

Frequently Asked Questions (FAQ)

Q: Are DF1EC-4P-2.5DSA(01) and DF1EC-4P-2.5DSA(36) electrically interchangeable?

A: Yes. Both parts are identical in electrical specifications, including 3A current rating, gold-plated contacts, brass material, and operating temperature range of -35°C to 85°C.

Q: Are these parts mechanically interchangeable?

A: Yes. Both parts have identical mechanical dimensions, including 2.5mm mating pitch, 4-position configuration, through-hole mounting, shrouded 4-wall design, and solder termination. Mated stacking heights are identical at 14.3mm, 15.8mm, and 19.8mm.

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

A: The primary differences are packaging format (bulk for the substitute) and product status (obsolete versus active). The substitute part also carries RoHS compliance certification.

Q: Can DF1EC-4P-2.5DSA(36) be used as a direct replacement in existing designs?

A: Yes. The substitute part maintains full compatibility with designs originally specified for DF1EC-4P-2.5DSA(01) across all electrical, mechanical, and environmental parameters.

Q: Are there any compliance or certification differences?

A: Both parts meet UL94 V-0 flammability requirements and carry MSL 1 (Unlimited) moisture sensitivity rating. The substitute part includes RoHS compliance certification, which may be required for certain applications or markets.

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