DF1B-4P-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-4P-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting with 4 positions at 2.5mm pitch. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design and procurement requirements. The connector features shrouded 4-wall construction with push-pull fastening and solder termination, suitable for board-to-cable/wire applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-4P-2.5DSA
Manufacturer	Hirose Electric Co Ltd
Series	DF1B
Connector Type	Header
Number of Positions	4
Pitch - Mating	0.098" (2.50mm)
Contact Type	Male Pin
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Termination	Solder
Operating Temperature	-35°C ~ 85°C
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
Insulation Material	Polyamide (PA), Nylon
Contact Material	Brass
Mated Stacking Heights	14mm

Substitute Part Grouping Explanation

Substitution eligibility for the DF1B-4P-2.5DSA is determined by the following critical parameters:

Connector type, number of positions, and pitch (0.098" / 2.50mm)
Mounting configuration (through-hole, solder termination)
Shrouding style (shrouded 4-wall) and fastening mechanism (push-pull)
Operating temperature range (-35°C ~ 85°C)
Voltage rating (250V)
Flammability rating (UL94 V-0)
Contact material (brass) and insulation material (polyamide/nylon)

The identified substitutes maintain these core parameters while differing in product status (active vs. obsolete) and contact finish specifications. Both substitute parts are from the same DF1B series and are manufactured by Hirose Electric Co Ltd.

Parameter Comparison

Parameter	DF1B-4P-2.5DSA (Main)	DF1BZ-4P-2.5DSA (Direct)	DF1B-4P-2.5DSA(01) (MFR Recommended)
Product Status	Obsolete	Active	Active
Number of Positions	4	4	4
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Contact Type	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Termination	Solder	Solder	Solder
Contact Finish - Mating	Tin	Tin	Gold
Contact Finish Thickness - Mating	Not specified	39.4µin (1.00µm)	8.00µin (0.203µm)
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C	-35°C ~ 85°C
Voltage Rating	250V	250V	250V
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Contact Material	Brass	Brass	Brass
Mated Stacking Heights	14mm	14mm	14mm
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both substitute parts are active products from Hirose Electric Co Ltd and maintain full mechanical and electrical compatibility with the obsolete DF1B-4P-2.5DSA.

DF1BZ-4P-2.5DSA is a direct functional equivalent with tin contact finish and ROHS3 compliance. This part is suitable for applications requiring RoHS compliance and standard tin plating specifications.

DF1B-4P-2.5DSA(01) is the manufacturer-recommended substitute, featuring gold contact finish with ROHS3 compliance. The gold plating provides enhanced contact reliability and corrosion resistance compared to tin finish. This variant is appropriate for applications requiring superior contact performance or extended service life.

Both substitutes are available in active inventory and carry identical mechanical dimensions, electrical ratings, and environmental specifications as the original part.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-4P-2.5DSA and DF1B-4P-2.5DSA(01) be used interchangeably with the original DF1B-4P-2.5DSA?

A: Both parts maintain identical mechanical and electrical parameters including pitch, number of positions, mounting type, shrouding, fastening mechanism, operating temperature, and voltage rating. The primary differences are product status (active vs. obsolete), RoHS compliance, and contact finish specifications. Mechanical and electrical interchangeability is confirmed.

Q: What is the difference between tin and gold contact finishes in these connectors?

A: The contact finish is applied to the mating surface of the male pins. Tin finish (DF1BZ-4P-2.5DSA) provides standard corrosion protection with a thickness of 1.00µm. Gold finish (DF1B-4P-2.5DSA(01)) offers enhanced contact reliability and corrosion resistance with a thickness of 0.203µm. Selection depends on application requirements for contact performance and environmental exposure.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both DF1BZ-4P-2.5DSA and DF1B-4P-2.5DSA(01) are ROHS3 compliant. The original DF1B-4P-2.5DSA is RoHS non-compliant. If RoHS compliance is a design requirement, either substitute part is acceptable.

Q: What is the packaging configuration for these parts?

A: Both substitute parts are supplied in bulk packaging. The original part packaging information was not specified in the technical data.

Q: Are there any differences in moisture sensitivity between these parts?

A: All three parts, including the original and both substitutes, carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message